Carrier Refrigerator MPW015 045 User Manual

AQUASNAP^®

30MPA,MPW015-045

Liquid Chillers with Scroll Compressors

and ComfortLink™ Controls

Controls, Start-Up, Operation,

Service, and Troubleshooting

SAFETY CONSIDERATIONS

CAUTION

Installing, starting up, and servicing this equipment can be

hazardous due to system pressures, electrical components, and

equipment location (elevated structures, mechanical rooms,

etc.). Only trained, qualified installers and service mechanics

should install, start up, and service this equipment.

When working on this equipment, observe precautions in

the literature, and on tags, stickers, and labels attached to the

equipment, and any other safety precautions that apply. Follow

all safety codes. Wear safety glasses and work gloves. Use

care in handling, rigging, and setting this equipment, and in

handling all electrical components.

This unit uses a microprocessor-based electronic control

system. Do not use jumpers or other tools to short out

components, or to bypass or otherwise depart from recom-

mended procedures. Any short-to-ground of the control

board or accompanying wiring may destroy the electronic

modules or electrical components.

CAUTION

To prevent potential damage to heat exchanger, always run

fluid through heat exchanger when adding or removing

refrigerant charge. Use appropriate brine solutions in cooler

fluid loop to prevent the freezing of brazed plate heat

exchanger when the equipment is exposed to temperatures

below 32 F (0° C). Proof of flow switch is factory installed

on all models. Do NOT remove power from this chiller dur-

ing winter shutdown periods without taking precaution to

remove all water from heat exchanger and optional

hydronic system. Failure to properly protect the system

from freezing may constitute abuse and may void warranty.

WARNING

Electrical shock can cause personal injury and death. Shut

off all power to this equipment during installation. There

may be more than one disconnect switch. Tag all discon-

nect locations to alert others not to restore power until work

is completed.

WARNING

DO NOT VENT refrigerant relief valves within a building.

Outlet from relief valves must be vented outdoors in

accordance with the latest edition of ANSI/ASHRAE

(American National Standards Institute/American Society

of Heating, Refrigerating and Air Conditioning Engineers)

15 (Safety Code for Mechanical Refrigeration). The

accumulation of refrigerant in an enclosed space can

displace oxygen and cause asphyxiation. Provide adequate

ventilation in enclosed or low overhead areas. Inhalation of

high concentrations of vapor is harmful and may cause

heart irregularities, unconsciousness or death. Misuse can

be fatal. Vapor is heavier than air and reduces the amount

of oxygen available for breathing. Product causes eye and

skin irritation. Decomposition products are hazardous.

CAUTION

Compressors require specific rotation. Monitor control

alarms during first compressor start up for reverse rotation

protection. Damage to unit may result.

CAUTION

Refrigerant charge must be removed slowly to prevent loss

of compressor oil that could result in compressor failure.

CAUTION

Puron^®refrigerant (R-410A) systems operate at higher

pressures than standard R-22 systems. Do not use R-22 ser-

vice equipment or components on Puron refrigerant equip-

ment. If service equipment is not rated for Puron

refrigerant, equipment damage or personal injury may

result.

WARNING

DO NOT attempt to unbraze factory joints when servicing

this equipment. Compressor oil is flammable and there is

no way to detect how much oil may be in any of the

refrigerant lines. Cut lines with a tubing cutter as required

when performing service. Use a pan to catch any oil that

may come out of the lines and as a gage for how much oil

to add to system. DO NOT re-use compressor oil. Damage

to equipment or personal injury may result.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53300053-01 Printed in U.S.A. Form 30MP-1T Pg 1 1-10 Replaces: New

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When a value is included as part of the path name, it will be

shown at the end of the path name after an equals sign. If the

value represents a configuration setting, an explanation will

be shown in parenthesis after the value. As an example,

ConfigurationOPT1MLV.S = 1 (Minimum Load Valve

Select).

Changing item values or testing outputs is accomplished in

the same manner. Locate and display the desired item. Press

so that the item value flashes. Use the arrow keys to

ENTER

change the value or state and press the

key to accept

ENTER

key to return to the next higher level of

it. Press the

ESCAPE

structure. Repeat the process as required for other items.

Pressing the

and

keys simultaneously

ENTER

ESCAPE

will scroll an expanded text description of the point name or

value across the display. The expanded description is shown in

the local display tables but will not be shown with the path

names in text.

Items in the Configuration and Service Test modes are pass-

word protected. The words ‘PASS’ and ‘WORD’ will alternate

on the display when required. The default password is 0111.

Press

and the 1111 password will be displayed. Press

ENTER

again and the first digit will begin to flash. Use the

The CCN (Carrier Comfort Network^®) point names are also

referenced in the local display tables for users configuring the

unit with CCN software instead of the local display. The CCN

tables are located in Appendix B of the manual.

ENTER

arrow keys to change the number and press

to accept

ENTER

the digit. Continue with the remaining digits of the password.

The password can only be changed through CCN operator in-

terface software such as ComfortWORKS^®, ComfortVIEW™

and Service Tool.

Basic Control Usage

SCROLLING MARQUEE DISPLAY — The scrolling mar-

quee display is the standard interface display to the ComfortLink

Control System for 30MP units. The display has up and down

See Tables 2-14 and Appendix A for further details.

ACCESSORY NAVIGATOR™ DISPLAY MODULE —

The Navigator module provides a mobile user interface to the

ComfortLink™ control system, which is only available as a

arrow keys, an

key, and an

key. These

ESCAPE

keys are used to navigate through the different levels of the

display structure. Press the key until the highest

ENTER

ESCAPE

field-installed accessory. The display has up and down arrow

operating level is displayed to move through the top 11 mode

levels indicated by LEDs (light emitting diodes) on the left side

of the display. See Fig. 1 and Tables 2-14.

keys, an

key, and an

key. These keys are

ESCAPE

used to navigate through the different levels of the display

structure. Press the key until ‘Select a Menu Item’

ENTER

ESCAPE

is displayed to move through the top 11 mode levels indicated

by LEDs on the left side of the display. See Fig. 2.

Once within a mode or sub-mode, pressing the

ENTER

keys simultaneously will put the scrolling

and

ESCAPE

marquee display into expanded text mode where the full mean-

ing of all sub-modes, items and their values can be displayed

Once within a Mode or sub-mode, a “>” indicates the cur-

rently selected item on the display screen. Pressing the

for the current selection. Press the

and

ESCAPE

ENTER

and

keys simultaneously will put the Nav-

ESCAPE

ENTER

keys to return the scrolling marquee display to its default menu

of rotating display items (those items in Run StatusVIEW).

In addition, the password will be disabled, requiring that it be

entered again before changes can be made to password protect-

igator module into expanded text mode where the full meaning

of all sub-modes, items and their values can be displayed. Press-

ing the

and

keys when the display says

ESCAPE

ENTER

‘Select Menu Item’ (Mode LED level) will return the Navigator

module to its default menu of rotating display items (those items

in Run StatusVIEW). In addition, the password will be dis-

abled, requiring that it be entered again before changes can be

ed items. Press the

text mode.

key to exit out of the expanded

ESCAPE

NOTE: When the Language Selection (Configuration

DISPLANG), variable is changed, all appropriate display

expansions will immediately change to the new language. No

power-off or control reset is required when reconfiguring

languages.

made to password protected items. Press the

exit out of the expanded text mode.

key to

ESCAPE

NOTE: When the Language Selection (Configuration

DISPLANG), variable is changed, all appropriate display

expansions will immediately change to the new language. No

power-off or control reset is required when reconfiguring

languages.

When a specific item is located, the item name alternates

with the value. Press the

key at a changeable item

ENTER

and the value will be displayed. Press

again and the

ENTER

value will begin to flash indicating that the value can be

changed. Use the up and down arrow keys to change the value,

When a specific item is located, the item name appears on the

left of the display, the value will appear near the middle of the

display and the units (if any) will appear on the far right of the

and confirm the value by pressing the

key.

ENTER

display. Press the

key at a changeable item and the val-

ENTER

ue will begin to flash. Use the up and down arrow keys to change

the value, and confirm the value by pressing the key.

ENTER

MODE

Run Status

Service Test

Temperature

Changing item values or testing outputs is accomplished in

the same manner. Locate and display the desired item. Press

Pressures

Setpoints

so that the item value flashes. Use the arrow keys to

ENTER

change the value or state and press the

Alarm Status

Inputs

key to accept

Outputs

ENTER

key to return to the next higher level of

Configuration

Time Clock

Operating Modes

Alarms

ESCAPE ENTER

it. Press the

ESCAPE

structure. Repeat the process as required for other items.

Items in the Configuration and Service Test modes are pass-

word protected. The words Enter Password will be displayed

when required, with 1111 also being displayed. The default

password is 1111. Use the arrow keys to change the number

Fig. 1 — Scrolling Marquee Display

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and press

to enter the digit. Continue with the re-

Configuration mode. Press

mode. The display will read:

> TEST OFF

to obtain access to this

ENTER

maining digits of the password. The password can only be

changed through CCN operator interface software such as

ComfortWORKS, ComfortVIEW and Service Tool.

METR OFF

LANG ENGLISH

Adjusting the Contrast — The contrast of the display can be

adjusted to suit ambient conditions. To adjust the contrast of

Pressing

will cause the “OFF” to flash. Use the up

ENTER

or down arrow keys to change “OFF” to “ON”. Pressing

will illuminate all LEDs and display all pixels in the

the Navigator module, press the

key until the dis-

ESCAPE

ENTER

play reads, “Select a menu item.” Using the arrow keys move

view screen. Pressing the up and down arrow keys simultane-

ously allows the user to adjust the display brightness. Use the

up or down arrow keys to adjust screen brightness. Press

to the Configuration mode. Press

this mode. The display will read:

to obtain access to

ENTER

> TEST OFF

METR OFF

LANG ENGLISH

to accept the change. The Navigator module will

ENTER

keep this setting as long as it is plugged in to the LEN bus.

Pressing

will cause the “OFF” to flash. Use the up

ENTER

or down arrow to change “OFF” to “ON”. Pressing

Comf

ENTER

will illuminate all LEDs and display all pixels in the view

screen. Pressing and simultaneously

Link

ESCAPE

ENTER

allows the user to adjust the display contrast. Use the up or

down arrows to adjust the contrast. The screen’s contrast will

MODE

Run

Alar

Status

tatus

Ser

vice

per

atur

ressures

Setpoints

Inputs

change with the adjustment. Press

to accept the

ENTER

Outputs

Configur

ation

Time Cloc

change. The Navigator module will keep this setting as long as

it is plugged in to the LEN bus.

ESC

Oper

ating Modes

Alar

ENTER

Adjusting the Backlight Brightness — The backlight of the

display can be adjusted to suit ambient conditions. The factory

default is set to the highest level. To adjust the backlight of the

Navigator module, press the

reads, “Select a menu item.” Using the arrow keys move to the

key until the display

ESCAPE

Fig. 2 — Accessory Navigator™ Display Module

Table 2 — Scrolling Marquee Display Menu Structure*

RUN

STATUS

SERVICE

TEST

SET

POINTS

TIME

CLOCK

OPERATING

MODES

MODE

TEMPERATURES PRESSURES

INPUTS OUTPUTS CONFIGURATION

ALARMS

Auto

View of

Run Status

(VIEW)

Service

Test Mode

(TEST)

Pressures

Cooling

Setpoints

(COOL)

General

Inputs

(GEN.I)

General

Outputs

(GEN.O)

Display

Configuration

(DISP)

Time of

Day

(TIME)

Unit Temperatures

Modes

(MODE)

Current

(CRNT)

Circuit A

(UNIT)

(PRC.A)

Unit Run

Hour and

Start

Head

Month,

Date, Day,

and Year

(DATE)

Outputs

and Pumps

(OUTS)

Temperatures

Circuit A

(CIR.A)

Circuit

Inputs

(CRCT)

Outputs

Circuit A

(CIR.A)

Unit

Configuration

(UNIT)

Reset

Alarms

(RCRN)

Pressure

Setpoint

(HEAD)

(RUN)

Circuit and

Compressor

Run Hours

(HOUR)

Brine

Freeze

Setpoint

(FRZ)

Daylight

Savings

Time

Ciruit A Comp

Test

(CMPA)

4-20mA

Inputs

(4-20)

Unit Options 1

Hardware

(OPT1)

Alarm

History

(HIST)

(DST)

Local

Holiday

Schedules

(HOL.L)

Compressor

Starts

(STRT)

Unit Options 2

Controls

(OPT2)

SUB-MODE

Preventive

Maintenance

(PM)

CCN Network

Configuration

(CCN)

Schedule

Number

(SCH.N)

Local

Occu-

Software

Version

(VERS)

Reset Cool Temp

(RSET)

pancy

Schedule

(SCH.L)

Set Point and

Ramp Load

(SLCT)

Schedule

Override

(OVR)

Service

Configuration

(SERV)

Broadcast

Configuration

(BCST)

LEGEND

For example, using the language selection item:

^{Language Selection (Configuration}DISPLANG)

Ckt — Circuit

*Throughout this text, the location of items in the menu structure will be

described in the following format:

^{Item Expansion (Mode Name}Sub-mode NameITEM)

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Table 3 — Run Status Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

DISPLAY SUB-ITEM DISPLAY SUB-ITEM DISPLAY

EXPANSION

SUB-MODE

VIEW

ITEM

EWT

LWT

COMMENT

ENTER

XXX.X F

ENTERING FLUID TEMP

LEAVING FLUID TEMP

ACTIVE SETPOINT

CONTROL POINT

XXX.X F

SETP XXX.X F

CTPT XXX.X F

LOD.F

STAT

XXX

LOAD/UNLOAD FACTOR

CONTROL MODE

0 = Service Test

1 = Off Local

2 = Off CCN

3 = Off Time

4 = Off Emrgcy

5 = On Local

6 = On CCN

7 = On Time

8 = Ht Enabled

9 = Pump Delay

OCC

YES/NO

OCCUPIED

OVERRIDE MODES IN EFFECT

PERCENT TOTAL CAPACITY

REQUESTED STAGE

CURRENT ALARMS & ALERTS

TIME OF DAY

MODE YES/NO

CAP

STGE

ALRM

TIME

XXX %

XXX

XX.XX

00.00-23.59

1 = January, 2 = February, etc.

01-31

MNTH

DATE

YEAR

MONTH OF YEAR

DAY OF MONTH

YEAR OF CENTURY

RUN

ENTER

HRS.U XXXX HRS

MACHINE OPERATING HOURS

MACHINE STARTS

STR.U

HR.P1

HR.P2

XXXX

XXXX.X

PUMP 1 RUN HOURS

PUMP 2 RUN HOURS

HOUR

STRT

ENTER

HR.A1 XXXX HRS

HR.A2 XXXX HRS

HR.A3 XXXX HRS

COMPRESSOR A1 RUN HOURS

COMPRESSOR A2 RUN HOURS

COMPRESSOR A3 RUN HOURS

COMPRESSOR A1 STARTS

COMPRESSOR A2 STARTS

COMPRESSOR A3 STARTS

STRAINER MAINTENANCE

STRAINER SRVC INTERVAL

STRAINER SRVC COUNTDOWN

ENTER

ST.A1

ST.A2

ST.A3

STRN

XXXX

ENTER

SI.ST

S.T.DN

S.T.MN

ST.DT

XXXX HRS

YES/NO

STRAINER MAINT. DONE

STRAINER MAINT. DATES

MM/DD/YY HH:MM

User Entry

ENTER

S.T.M0

S.T.M1

S.T.M2

S.T.M3

S.T.M4

MM/DD/YY HH:MM

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Table 3 — Run Status Mode and Sub-Mode Directory (cont)

KEYPAD

ENTRY

ITEM

DISPLAY SUB-ITEM DISPLAY SUB-ITEM DISPLAY

EXPANSION

SUB-MODE

VERS

ITEM

COMMENT

ENTER

AUX

CESR131333-xx-xx

CESR131279-xx-xx

CESR131174-xx-xx

CESR131171-xx-xx

CESR130227-xx-xx

xx-xx is Version number*

MBB

EMM

MARQ

NAVI

xx-xx is Version number*

*Press

ENTER

and

ESCAPE

simultaneously to obtain version number.

Table 4 — Service Test Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

TEST

ITEM

DISPLAY

COMMENT

EXPANSION

ON/OFF

SERVICE TEST MODE

To Enable Service Test Mode,

move Enable/Off/Remote

Contact switch to OFF. Change

TEST to ON. Move switch to

ENABLE.

ENTER

OUTS

OUTPUTS AND PUMPS

COOLER PUMP RELAY

CLR.P

CND.P

UL.TM

CC.H

ON/OFF

0 to 15

CONDENSER PUMP

COMP A1 UNLOAD TIME

CRANKCASE HEATER

ON/OFF

CW.VO

CW.VC

LL.SV

RMT.A

CONDENSER VALVE OPEN

CONDENSER VALVE CLOSE

LIQUID LINE SOLENOID

REMOTE ALARM RELAY

CMPA

CIRCUIT A COMPRESSOR TEST

COMPRESSOR A1 RELAY

ENTER

CC.A1

UL.TM

CC.A2

CC.A3

MLV

ON/OFF

0 to 15

COMP A1 UNLOAD TIME

COMPRESSOR A2 RELAY

COMPRESSOR A3 RELAY

MINIMUM LOAD VALVE RELAY

ON/OFF

Table 5 — Temperature Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

UNIT

ITEM

DISPLAY

COMMENT

EXPANSION

ENT AND LEAVE UNIT TEMPS

ENTER

CEWT

CLWT

CDET

CDLT

OAT

XXX.X F

COOLER ENTERING FLUID

COOLER LEAVING FLUID

CONDENSER ENTERING FLUID

CONDENSER LEAVING FLUID

OUTSIDE AIR TEMPERATURE

SPACE TEMPERATURE

SPT

DLWT

LEAD/LAG LEAVING FLUID

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Table 5 — Temperature Mode and Sub-Mode Directory (cont)

KEYPAD

ENTRY

ITEM

SUB-MODE

CIR.A

ITEM

DISPLAY

COMMENT

EXPANSION

TEMPERATURES CIRCUIT A

ENTER

SCT.A

SST.A

RGT.A

D.GAS

SH.A

XXX.X F

XXX.X ^F

SATURATED CONDENSING TMP

SATURATED SUCTION TEMP

COMPR RETURN GAS TEMP

DISCHARGE GAS TEMP

SUCTION SUPERHEAT TEMP

Table 6 — Pressure Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

PRC.A

ITEM

DISPLAY

COMMENT

EXPANSION

PRESSURES CIRCUIT A

ENTER

DP.A

SP.A

XXX.X PSIG

DISCHARGE PRESSURE

SUCTION PRESSURE

Table 7 — Set Points Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

COOL

ITEM

DISPLAY

COMMENT

EXPANSION

COOLING SETPOINTS

ENTER

CSP.1

CSP.2

CSP.3

XXX.X F

COOLING SETPOINT 1

COOLING SETPOINT 2

ICE SETPOINT

Default: 44 F

Default: 32 F

HEAD

FRZ

HEAD PRESSURE SETPOINTS

HEAD SETPOINT

ENTER

H.DP

XXX.X F

Default: 95 F

Default: 34 F

BRINE FREEZE SETPOINT

BRINE FREEZE POINT

BR.FZ

Table 8 — Inputs Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

GEN.I

ITEM

DISPLAY

COMMENT

EXPANSION

GENERAL INPUTS

ENTER

STST

FLOW

CD.FL

DLS1

DLS2

ICED

STRT/STOP

ON/OFF

START/STOP SWITCH

COOLER FLOW SWITCH

CONDENSER FLOW SWITCH

DEMAND LIMIT SWITCH 1

DEMAND LIMIT SWITCH 2

ICE DONE

OPEN/CLSE

ON/OFF

DUAL

ON/OFF

DUAL SETPOINT SWITCH

CRCT

4-20

CIRCUITS INPUTS

ENTER

FKA1

FKA2

FKA3

ON/OFF

COMPRESSOR A1 FEEDBACK

COMPRESSOR A2 FEEDBACK

COMPRESSOR A3 FEEDBACK

4-20 MA INPUTS

ENTER

DMND

RSET

CSP

XX.X MA

4-20 MA DEMAND SIGNAL

4-20 MA RESET SIGNAL

4-20 MA COOLING SETPOINT

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Table 9 — Outputs Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

GEN.O

ITEM

DISPLAY

COMMENT

EXPANSION

GENERAL OUTPUTS

ENTER

C.LWP

C.DWP

ALRM

ON/OFF

COOLER PUMP RELAY

CONDENSER PUMP

ALARM RELAY

CDWO

CDWC

CONDENSER VALVE OPEN

CONDENSER VALVE CLOSE

CIR.A

OUTPUTS CIRCUIT A

ENTER

CC.A1

D.SOL

CC.A2

CC.A3

CCH

ON/OFF

COMPRESSOR A1 RELAY

DIGITAL SCROLL SOLENOID

COMPRESSOR A2 RELAY

COMPRESSOR A3 RELAY

CRANKCASE HEATER RELAY

LIQUID LINE SOLENOID

LLSV

MLV.R

MINIMUM LOAD VALVE RELAY

Table 10 — Configuration Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

DISP

ITEM

DISPLAY

COMMENT

EXPANSION

DISPLAY CONFIGURATION

ENTER

TEST

ON/OFF

TEST DISPLAY LEDS

Off = English

On = Metric

METR

LANG

ON/OFF

METRIC DISPLAY

LANGUAGE SELECTION

Default: 0

0 = English

1 = Espanol

2 = Francais

3 = Portuguese

PAS.E

PASS

ENBL/DSBL

xxxx

PASSWORD ENABLE

SERVICE PASSWORD

UNIT CONFIGURATION

Default: Enable

Default: 1111

UNIT

ENTER

2=WaterCooled

3=Split System

TYPE

UNIT TYPE

SIZE

SZA.1

SZA.2

SZA.3

UNIT SIZE

COMPRESSOR A1 SIZE

COMPRESSOR A2 SIZE

COMPRESSOR A3 SIZE

Unit Dependent

Default: Yes (A1 Digital Scroll)

Default: 7

A1.TY

MAX.T

No/Yes

0 to 15

COMPRESSOR A1 DIGITAL?

MAXIMUM A1 UNLOAD TIME

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Table 10 — Configuration Mode and Sub-Mode Directory (cont)

KEYPAD

ENTRY

ITEM

SUB-MODE

OPT1

ITEM

DISPLAY

COMMENT

EXPANSION

UNIT OPTIONS 1 HARDWARE

Default: Water

1 = Water

2 = Medium Temperature Brine

ENTER

FLUD

COOLER FLUID

MLV.S

R.G.EN

OAT.E

D.G.EN

CSB.E

CPC

YES/NO

ENBL/DSBL

ON/OFF

MINIMUM LOAD VALVE SELECT

RETURN GAS SENSOR ENABLE

ENABLE OAT SENSOR

Default: No

DISCHARGE GAS TEMP ENABLE

CSB BOARDS ENABLE

COOLER PUMP CONTROL

Default: On

PM.DY

DPME

DFLS

XX MIN

COOLER PUMP SHUTDOWN DLY

ENABLE CONDENSER PUMP

ENABLE COND FLOW SWITCH

ENABLE COND WTR SENSORS

0 to 10 minutes, Default: 1 min.

0 to 2

ENBL/DSBL

CDWS

OPT2

UNIT OPTIONS 2 CONTROLS

CONTROL METHOD

CTRL

Default: Switch

ENTER

0 = Enable/Off/Remote Switch

2 = Occupancy

3 = CCN Control

Default: 60

LCWT

DELY

ICE.M

XX.X F

HIGH LCW ALERT LIMIT

MINUTES OFF TIME

ICE MODE ENABLE

Range: 2 to 60 F

Default: 0 Minutes

Range: 0 to 15 Minutes

ENBL/DSBL

Default: Disable

CCN

CCN NETWORK CONFIGURATION

CCN ADDRESS

Default: 1

Range: 1 to 239

CCNA

XXX

ENTER

Default: 0

CCNB

BAUD

XXX

CCN BUS NUMBER

CCN BAUD RATE

Range: 0 to 239

Default: 9600

1 = 2400

2 = 4800

3 = 9600

4 = 19,200

5 = 38,400

RSET

RESET COOL TEMP

CRST

COOLING RESET TYPE

Default: No Reset

0 = No Reset

ENTER

1 = 4 to 20 mA Input

2 = Outdoor Air Temperature

3 = Return Fluid

4 = Space Temperature

Default: 0.0F

MA.DG

RM.NO

RM.F

XX.X F

XXX.X F

XX.X F

4-20 - DEGREES RESET

REMOTE - NO RESET TEMP

REMOTE - FULL RESET TEMP

REMOTE - DEGREES RESET

RETURN - NO RESET TEMP

RETURN - FULL RESET TEMP

Range: –30 to 30F

Default: 125F (51.7C)

Range: 0° to 125F

Default: 0.0F (-17.8C)

Range: 0 to 125F

Default: 0.0F

Range: –30 to 30F

RM.DG

RT.NO

RT.F

Default: 10.0F (5.6C)

Range: 0 to 125F COOLER T

XXX.X F

Default: 0.0F (0.0C)

Range: 0 to 125F COOLER T

Default: 0.0F

RT.DG

DMDC

XX.X F

RETURN - DEGREES RESET

DEMAND LIMIT SELECT

Range: –30 to 30F (–34.4 to -1.1 C)

Default: None

0 = None

1 = Switch

2 = 4 to 20 mA Input

3 = CCN Loadshed

Default: 100%

DM20

SHNM

SHDL

SHTM

DLS1

DLS2

XXX %

XXX

DEMAND LIMIT AT 20 MA

LOADSHED GROUP NUMBER

LOADSHED DEMAND DELTA

MAXIMUM LOADSHED TIME

DEMAND LIMIT SWITCH 1

DEMAND LIMIT SWITCH 2

Range: 0 to 100%

Default: 0

Range: 0 to 99

Default: 0%

Range: 0 to 60%

XXX %

XXX

Default: 60 minutes

Range: 0 to 120 minutes

Default: 80%

Range: 0 to 100%

XXX %

Default: 50%

Range: 0 to 100%

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Table 10 — Configuration Mode and Sub-Mode Directory (cont)

KEYPAD

ENTRY

ITEM

EXPANSION

SUB-MODE

ITEM

DISPLAY

COMMENT

LLEN

ENBL/DSBL

LEAD/LAG CHILLER ENABLE

Default: Disable

Default: Master

MSSL

SLVA

SLVE/MAST

XXX

MASTER/SLAVE SELECT

SLAVE ADDRESS

Default: 0

Range: 0 to 239

ENTER

Default: Master Leads

0 = Master Leads

1 = Slave Leads

2 = Automatic

RSET

(cont)

LLBL

LEAD/LAG BALANCE SELECT

Default: 168 hours

LLBD

LLDY

PARA

XXX

YES

LEAD/LAG BALANCE DELTA

LAG START DELAY

Range: 40 to 400 hours

Default: 5 minutes

Range: 0 to 30 minutes

PARALLEL CONFIGURATION

Default: YES (CANNOT BE CHANGED)

SLCT

SETPOINT AND RAMP LOAD

COOLING SETPOINT SELECT

CLSP

Default: Single

0 = Single

1 = Dual Switch

2 = Dual CCN Occupied

3 = 4 to 20 mA Input (requires

EMM)

ENTER

RL.S

CRMP

SCHD

Z.GN

ENBL/DSBL

RAMP LOAD SELECT

COOLING RAMP LOADING

SCHEDULE NUMBER

Default: Enable

Default: 1.0

Range: 0.2 to 2.0

X.X

Default: 1

Range: 1 to 99

Default: 1.0

Range: 1.0 to 4.0

X.X

DEADBAND MULTIPLIER

SERV

SERVICE CONFIGURATION

ENABLE COMPRESSOR A1

ENTER

EN.A1

EN.A2

EN.A3

REV.R

ENBL/DSBL

Unit dependent

Default: Enable

ENABLE COMPRESSOR A2

ENABLE COMPRESSOR A3

REVERSE ROTATION ENABLE

BCST

BROADCAST CONFIGURATION

CCN TIME/DATE BROADCAST

ENTER

T.D.BC

OAT.B

ON/OFF

CCN OAT BROADCAST

GLOBAL SCHEDULE BROADCAST

CCN BROADCAST ACK’ER

G.S.BC

BC.AK

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Table 11 — Time Clock Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

TIME

ITEM

DISPLAY

SUB-ITEM

DISPLAY

COMMENT

EXPANSION

TIME OF DAY

ENTER

HH.MM

XX.XX

HOUR AND MINUTE

Military (00:00 – 23:59)

DATE

MONTH,DATE,DAY AND YEAR

MONTH OF YEAR

ENTER

MNTH

DOM

DAY

1-12 (1 = January, 2 = February, etc)

Range: 01-31

DAY OF MONTH

DAY OF WEEK

1-7 (1 = Monday, 2 = Tuesday, etc)

YEAR

XXXX

YEAR OF CENTURY

DST

DAYLIGHT SAVINGS TIME

MONTH

ENTER

STR.M

STR.W

STR.D

MIN.A

STP.M

STP.W

STP.D

MIN.S

Default: 4, Range 1 – 12

Default: 1, Range 1 – 5

Default: 7, Range 1 – 7

Default: 60, Range 0 – 99

Default: 10, Range 1 – 12

Default: 5, Range 1 – 5

Default: 7, Range 1 – 7

Default: 60, Range 0 – 99

WEEK

DAY

MINUTES TO ADD

MONTH

WEEK

DAY

MINUTES TO SUBTRACT

HOL.L

LOCAL HOLIDAY SCHEDULES

HOLIDAY START MONTH

HD.01 through HD.30

Range 0 – 12

ENTER

MON

DAY

LEN

START DAY

Range 0 – 31

DURATION (DAYS)

Range 0 - 99

SCH.N

SCH.L

SCHEDULE NUMBER

Default: 1, Range 1 – 99

LOCAL OCCUPANCY SCHEDULE

ENTER

PER.1

OCCUPANCY PERIOD 1*

PERIOD OCCUPIED TIME

PERIOD UNOCCUPIED TIME

MONDAY IN PERIOD

OCC.1

UNC.1

MON.1

TUE.1

WED.1

THU.1

FRI.1

XX:XX

XX.XX

Military (00:00 – 23:59)

YES/NO

TUESDAY IN PERIOD

WEDNESDAY IN PERIOD

THURSDAY IN PERIOD

FRIDAY IN PERIOD

SAT.1

SATURDAY IN PERIOD

SUNDAY IN PERIOD

SUN.1

HOL.1

HOLIDAY IN PERIOD

OVR

SCHEDULE OVERRIDE

ENTER

OVR.T

OVR.L

T.OVR

TIMED OVERRIDE HOURS

Default: 0, Range 0-4 hours

User Entry

OVERRIDE TIME LIMIT

TIMED OVERRIDE

YES/NO

* Repeats for Occupancy Periods 2 through 8.

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Table 12 — Operating Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

MODE

ITEM

DISPLAY

COMMENT

EXPANSION

MODES CONTROLLING UNIT

ENTER

MD01

MD03

MD05

MD06

MD07

MD09

MD10

MD13

MD14

MD15

MD16

MD17

MD18

MD19

MD20

MD21

MD23

MD24

ON/OFF

CSM CONTROLLING CHILLER

MASTER/SLAVE CONTROL

RAMP LOAD LIMITED

TIMED OVERRIDE IN EFFECT

LOW COOLER SUCTION TEMPA

SLOW CHANGE OVERRIDE

MINIMUM OFF TIME ACTIVE

DUAL SETPOINT

TEMPERATURE RESET

DEMAND LIMITED

COOLER FREEZE PROTECTION

LOW TEMPERATURE COOLING

HIGH TEMPERATURE COOLING

MAKING ICE

STORING ICE

HIGH SCT CIRCUIT A

MINIMUM COMP ON TIME

PUMP OFF DELAY TIME

LEGEND

CSM

SCT

WSM

—

Chillervisor System Manager

Saturated Condensing Temperature

Water System Manager

Table 13 — Alarms Mode and Sub-Mode Directory

KEYPAD

ENTRY

ITEM

SUB-MODE

CRNT

ITEM

COMMENT

EXPANSION

Alarms are shown as AXXX.

Alerts are shown as TXXX.

ENTER

AXXX OR TXXX

YES/NO

CURRENTLY ACTIVE ALARMS

RESET ALL CURRENT ALARMS

ALARM HISTORY

RCRN

HIST

Alarms are shown as AXXX.

Alerts are shown as TXXX.

AXXX OR TXXX

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Table 14 — Operating Modes

MODE

NO.

ITEM EXPANSION

DESCRIPTION

CSM CONTROLLING CHILLER

MASTER/SLAVE CONTROL

RAMP LOAD LIMITED

Chillervisor System Manager (CSM) is controlling the chiller.

Dual Chiller control is enabled.

Rampload(pull-down)limitingineffect.Inthismode,therateatwhichleavingfluidtemperature

isdroppedislimitedtoapredeterminedvaluetopreventcompressoroverloading.SeeCooling

Ramp Loading (ConfigurationSLCTCRMP). The pull-down limit can be modified, if

desired, to any rate from 0.2° F to 2° F (0.1° to 1° C)/minute.

TIMED OVERRIDE IN EFFECT

LOW COOLER SUCTION TEMPA

Timed override is in effect. This is a 1 to 4 hour temporary override of the programmed

schedule, forcing unit to Occupied mode. Override can be implemented with unit under

Local (Enable) or CCN (Carrier Comfort Network^®) control. Override expires after each use.

Circuit A cooler Freeze Protection mode. At least one compressor must be on, and the Sat-

urated Suction Temperature is not increasing greater than 1.1° F (0.6° C) in 10 seconds. If

the saturated suction temperature is less than the Brine Freeze Point (Set PointsFRZ

BR.FZ) minus 6° F (3.4° C) and less than the leaving fluid temperature minus 14° F

(7.8° C) for 2 minutes, a stage of capacity will be removed from the circuit. Or, If the satu-

rated suction temperature is less than the Brine Freeze Point minus 14° F (7.8° C), for

90 seconds, a stage of capacity will be removed from the circuit. The control will continue to

decrease capacity as long as either condition exists.

SLOW CHANGE OVERRIDE

Slow change override is in effect. The leaving fluid temperature is close to and moving

towards the control point.

MINIMUM OFF TIME ACTIVE

DUAL SETPOINT

Chiller is being held off by Minutes Off Time (ConfigurationOPT2DELY).

Dual Set Point mode is in effect. Chiller controls to Cooling Set Point 1 (Set PointsCOOL

CSP.1) during occupied periods and Cooling Set Point 2 (Set PointsCOOLCSP.2)

during unoccupied periods.

TEMPERATURE RESET

DEMAND LIMITED

Temperature reset is in effect. In this mode, chiller is using temperature reset to adjust leav-

ing fluid set point upward and is currently controlling to the modified set point. The set point

can be modified based on return fluid, outdoor-air-temperature, space temperature, or 4 to

20 mA signal.

Demand limit is in effect. This indicates that the capacity of the chiller is being limited by

demand limit control option. Because of this limitation, the chiller may not be able to pro-

duce the desired leaving fluid temperature. Demand limit can be controlled by switch inputs

or a 4 to 20 mA signal.

COOLER FREEZE PROTECTION

LOW TEMPERATURE COOLING

HIGH TEMPERATURE COOLING

Cooler fluid temperatures are approaching the Freeze point (see Alarms and Alerts section

for definition). The chiller will be shut down when either fluid temperature falls below the

Freeze point.

Chiller is in Cooling mode and the rate of change of the leaving fluid is negative and

decreasing faster than -0.5° F per minute. Error between leaving fluid and control point

exceeds fixed amount. Control will automatically unload the chiller if necessary.

Chiller is in Cooling mode and the rate of change of the leaving fluid is positive and increasing.

Error between leaving fluid and control point exceeds fixed amount. Control will automatically

load the chiller if necessary to better match the increasing load.

MAKING ICE

STORING ICE

Chiller is in an unoccupied mode and is using Cooling Set Point 3 (Set PointsCOOL

CSP.3) to make ice. The ice done input to the Energy Management Module (EMM) is open.

ChillerisinanunoccupiedmodeandiscontrollingtoCoolingSetPoint2(SetPointsCOOL

CSP.2). The ice done input to the Energy Management Module (EMM) is closed.

HIGH SCT CIRCUIT A

Chiller is in a Cooling mode and the Saturated Condensing Temperature (SCT) is greater than

the calculated maximum limit. No additional stages of capacity will be added. Chiller capacity

may be reduced if SCT continues to rise to avoid high-pressure switch trips by reducing con-

densing temperature.

MINIMUM COMP ON TIME

PUMP OFF DELAY TIME

Cooling load may be satisfied, however control continues to operate compressor to ensure

proper oil return. May be an indication of oversized application, low fluid flow rate or low loop

volume.

Cooling load is satisfied, however cooler pump continues to run for the number of minutes set

by the configuration variable Cooler Pump Shutdown Delay (ConfigurationOPT1

PM.DY).

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the main base board (MBB) is supplied with the current soft-

ware. If necessary, reload current software. If the problem still

persists, replace the MBB. A red LED that is lit continuously or

blinking at a rate of once per second or faster indicates that the

board should be replaced.

GREEN LED — The MBB has one green LED. The Local

Equipment Network (LEN) LED should always be blinking

whenever power is on. All other boards have a LEN LED

which should be blinking whenever power is on. Check LEN

connections for potential communication errors at the board J3

and/or J4 connectors. Communication between modules is

accomplished by a 3-wire sensor bus. These 3 wires run in

parallel from module to module. The J4 connector on the MBB

provides both power and communication directly to the

marquee display only.

CONTROLS

General — The 30MP liquid scroll chillers contain the

ComfortLink™ electronic control system that controls and

monitors all operations of the chiller.

The control system is composed of several components as

listed in the sections below. See Fig. 3 for a typical control box

drawing. See Fig. 4 and 5 for control schematics.

Main Base Board (MBB) — See Fig. 6. The MBB is

the heart of the ComfortLink control system. It contains the

major portion of operating software and controls the operation

of the machine. The MBB continuously monitors input/output

channel information received from its inputs and from all other

modules. The MBB receives inputs from the discharge and

suction pressure transducers and thermistors. See Table 15. The

MBB also receives the feedback inputs from each compressor

current sensor board and other status switches. See Table 16.

The MBB also controls several outputs. Relay outputs con-

trolled by the MBB are shown in Table 17. Information is

transmitted between modules via a 3-wire communication bus

or LEN (Local Equipment Network). The CCN (Carrier Com-

fort Network) bus is also supported. Connections to both LEN

and CCN buses are made at the LVT (low voltage terminal).

YELLOW LED — The MBB has one yellow LED. The

Carrier Comfort Network (CCN) LED will blink during times

of network communication.

Carrier Comfort Network^®(CCN) Interface —

The 30MP chiller units can be connected to the CCN if

desired. The communication bus wiring is a shielded,

3-conductor cable with drain wire and is supplied and installed

in the field. See Table 18. The system elements are connected

to the communication bus in a daisy chain arrangement. The

positive pin of each system element communication connector

must be wired to the positive pins of the system elements on

either side of it. This is also required for the negative and

signal ground pins of each system element. Wiring connections

for CCN should be made at LVT. Consult the CCN Contrac-

tor’s Manual for further information.

NOTE: Conductors and drain wire must be 20 AWG (Ameri-

can Wire Gage) minimum stranded, tinned copper. Individual

conductors must be insulated with PVC, PVC/nylon, vinyl,

Teflon, or polyethylene. An aluminum/polyester 100% foil

shield and an outer jacket of PVC, PVC/nylon, chrome vinyl,

or Teflon with a minimum operating temperature range of

–20 C to 60 C is required. Wire manufactured by Alpha (2413

or 5463), American (A22503), Belden (8772), or Columbia

(02525) meets the above mentioned requirements.

It is important when connecting to a CCN communication

bus that a color coding scheme be used for the entire network

to simplify the installation. It is recommended that red be used

for the signal positive, black for the signal negative, and white

for the signal ground. Use a similar scheme for cables contain-

ing different colored wires.

At each system element, the shields of its communication

bus cables must be tied together. If the communication bus is

entirely within one building, the resulting continuous shield

must be connected to a ground at one point only. If the commu-

nication bus cable exits from one building and enters another,

the shields must be connected to grounds at the lightning

suppressor in each building where the cable enters or exits the

building (one point per building only). To connect the unit to

the network:

Energy Management Module (EMM) — The EMM

module is available as a factory-installed option or as a field-

installed accessory. The EMM module receives 4 to 20 mA

inputs for the leaving fluid temperature reset, cooling set point

and demand limit functions. The EMM module also receives

the switch inputs for the field-installed 2-stage demand limit

and ice done functions. The EMM module communicates the

status of all inputs with the MBB, and the MBB adjusts the

control point, capacity limit, and other functions according to

the inputs received.

Current Sensor Board (CSB) — The CSB is used to

monitor the status of the compressors by measuring current and

providing an analog input to the main base board (MBB).

Enable/Off/Remote Contact Switch — The Enable/

Off/Remote Contact switch is a 3-position switch used to

control the chiller. When switched to the Enable position the

chiller is under its own control. Move the switch to the Off

position to shut the chiller down. Move the switch to the

Remote Contact position and a field-installed dry contact can

be used to start the chiller. The contacts must be capable of

handling a 24 vac, 50-mA load. In the Enable and Remote

Contact (dry contacts closed) positions, the chiller is allowed to

operate and respond to the scheduling configuration, CCN

configuration and set point data. See Fig. 7.

Emergency On/Off Switch — The Emergency On/Off

switch should only be used when it is required to shut the

chiller off immediately. Power to the MBB, EMM, and

marquee display is interrupted when this switch is off and all

outputs from these modules will be turned off. See Fig. 7.

Board Addresses — The main base board (MBB) has a

3-position instance jumper that must be set to ‘1.’ The EMM

board has 4-position DIP switches. All switches are set to ‘On’

for all boards except the AUX2 board. The AUX2 board DIP

switch settings are shown on the wiring schematic.

1. Turn off power to the control box.

2. Cut the CCN wire and strip the ends of the red (+), white

(ground), and black (–) conductors. (Substitute appropri-

ate colors for different colored cables.)

3. Connect the red wire to (+) terminal on LVT of the plug,

the white wire to COM terminal, and the black wire to the

(–) terminal.

4. The RJ14 CCN connector on LVT can also be used, but is

only intended for temporary connection (for example, a

laptop computer running Service Tool).

Control Module Communication

RED LED — Proper operation of the control boards can be

visually checked by looking at the red status LEDs

(light-emitting diodes). When operating correctly, the red status

LEDs should be blinking in unison at a rate of once every

2 seconds. If the red LEDs are not blinking in unison, verify

that correct power is being supplied to all modules. Be sure that

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LEGEND FOR FIG. 3-5

ALMR

AUX

— Alarm Relay

— Auxilliary

— Contactor, Compressor

— Circuit Breaker

CCB

CCH

COMP

— Compressor Circuit Breaker

— Crankcase Heater

— Crankcase Heater Relay

— Compressor

— Control Relay

CSB

CWFS

CWP

DGS

DPT

DTT

DUS

EMM

EWT

— Current Sensor Board

— Chilled Water Flow Switch

— Chilled Water Pump

— Digital Scroll Compressor

— Discharge Pressure Transducer

— Discharge Temperature Thermistor

— Digital Unloader Solenoid

— Energy Management

— Entering Water Temperature

— Fuse Block

FIOP

— factory Installed Option

— Fuse

GND

HPS

LLSV

LON

LVT

— Ground

— High-Pressure Switch

— Liquid Line Solenoid Valve

— Local Operating Network

— Low Voltage Terminal

— Leaving Water Temperature

— Main Base Board

LWT

MBB

MLV

— Minimum Load Valve

— Modular Motor Protection

— National Electrical Code

— Outdoor-Air Thermistor

— Plug

NEC

OAT

RLY

SPT

— Relay

— Suction Pressure Transducer

— Switch

— Terminal Block

TRAN

UPC

— Transformer

— Unitary Protocol Converter

Terminal Block

Terminal (Unmarked)

Terminal (Marked)

Splice

Factory Wiring

Field Wiring

Accessory or Option Wiring

To indicate common potential only; not to represent wiring.

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UPC LON

OPTION

EQUIP

GND

UPC

TB3

25242322212019181716151413121110 9

LVT

DISCONNECT

OPTION CB1A/TB1A

CCB-3

CCB-2

CCB-1

EMM

CSB-A2

CSB-A3

CSB-A1

CCH

CA3

CA1

CA2

TRAN1

MBB

FB1

LOCATED OVER EMM

CB1

CB2

CB3

REMOTE

CONTROL

OFF

SW1

OFF

ENABLE

SW2

Fig. 3 — Typical Control Box — 30MP015-045 Units

a30-4963

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TO FUSED DISCONNECT

PER NEC

TARN1

a30-4965

TO FUSED

DISCONNECT

PER NEC

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TRAN1

CB2

3.2 AMPS

SW2

SECONDARY 24V

RED

FU3

BRN

TB3

GRN/YEL

ORN

MBB

CB1

3.2 AMPS

ORN

J10A

ORN

PNK

LVT

J12

PNK

ORN

RLY 11

GRA

ALMR

ALARM RELAY

SEE NOTE 7

TB3

BRN

X2 TRAN1

CWFS-3

PNK

RLY 9

CWP RELAY

SEE NOTE 7

J12

LLSV-A

RLY 10

BLU

ORN

PNK

J10B

CONDENSER FAN/PUMP RELAY

SEE NOTE 7

RLY 5

CONDENSER

WATER

VALVE

J11

ORN

(MPB ONLY)

RLY 6

RED

GRA

BRN

TB3

RLY 7

LLSV-A

MLV-A

BRN

(MPA AND BRINE ONLY)

BLU

ORN

GRA

VIO

GRA

C2 CA3

MLV-A

RLY 8

RLY 1

RLY 2

RLY 3

RLY 4

BLU

ORN

GRA

VIO

C1 CCH C2

(MPA ONLY)

BRN

HPS-A

BLK

PNK

PL1-1

PL1-2

MP-A1

VIO

BRN

PL1-4

PL2-4

C1 CA1 C2

SEE NOTE 11

PL2-1

VIO

PL2-2

M2 VIO

BLK

MP-A2

VIO M1

BRN

PL2-4

PL3-4

CA2

SEE NOTE 11

PL3-1

VIO

PL3-2

VIO

MP-A3

VIO

C2 CCH

C1 CA3 C2

BRN

SEE NOTE 11

VIO

(040,045 ONLY)

PL3-4

GRA

BRN

LLSV-A

MLV-A

C2 CCH

MLV FIOP

BLK

PNK

BRN

BLU

BRN

CWFS

TB3

LVT

J11

SEE NOTE

PL1-3

RED

PL1-4

BRN

T2 MP-A1 T1

C2 CA1

SEE NOTE

RED

PL2-3

RED

PL2-4

BRN

CWPI

T2 MP-A2 T1

BRN

C2 CA1

C2 CA2

(SEE

NOTE

12)

SEE NOTE 10

PL3-3

RED

PL3-4

BRN

CWFS

C2 CA2

C2 CA3

T2 MP-A3 T1

BRN

MARQUEE

DISPLAY

BLK

WHT

RED

WHT

BLK

RED

WHT

BLK

VIO

RED

BRN

RED

REMOTE

ON-OFF

SWITCH

(SEE

SW1

ENABLE

RED

WHT

BLK

RED

OFF

ORN

NOTE 5)

MAIN

BASE

DUAL

SETPOINT

AUX2

BLU

VIO

BOARD

RED

ORN

BRN

RED

ORN

BRN

RED

ORN

BRN

CSB

CNPI

CNFS

DUS

DTT

VIO

BRN

CH1

BLK

CSB

(040,045 ONLY)

WHT

RED

DGS

FIOP

CH11

RED

BLK

CSB

OFF

DARK

CONDENSER EWT

ACCESSORY

SWITCH LOCATION

CONDENSER LWT

ACCESSORY

T-55

ACCSY

LVT

SEN

LVT

J12

T55

LVT

J10

BLU

J13

GRA

BRN

VIO

RED

BLK

EMM

GRA

RED

BLU

RED

ICE DONE

WHT

RED

BRN

RED

BLK

WHT

RED

BLK

WHT

RED

WHT

BLK

WHT

RED

OAT ACCESSORY OR

DUAL CHILLER LWT

DLS STEP

RGTA

ACCESSORY

BLK

COOLER ENTERING

FLUID TEMP

RED

BLK

WHT

RED

BLK

WHT

RED

BLK

RED

COOLER LEAVING

FLUID TEMP

BLK

FIOP/

ACCESSORY

DEMAND

LIMIT

4-20mA

UPC

PORT

RED

BLK

NET

LON

OPTION

VIO

BRN

NET

N/C

J3 GND

NET

TEMP

RESET

4-20mA

ORN

PNK

WHT

SIGNAL

RED

PORT 1A

COOLING

SETPOINT

4-20mA

DPTA

GRN

BLK

NET

SHIELD

UPC OPT

RED

SPTA

GRN

BLK

a30-4966

Fig. 5 — Typical Control Wiring Schematic — 30MP015-045 Units

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RGTA, CNDE, CNDL, EWT, LWT, and OAT are identical in

temperature versus resistance and voltage drop performance.

The dual chiller thermistor (DLWT) is 5 kat 77 F (25 C)

thermistor. Space temperature thermistor (SPT) is a 10 kat

77 F (25 C). See Thermistors section for temperature-resis-

tance-voltage drop characteristics.

COOLER LEAVING FLUID SENSOR (LWT) — The thermis-

tor is installed in a well in the factory-installed leaving fluid

piping coming from the bottom of the brazed-plate heat

exchanger.

COOLER ENTERING FLUID SENSOR (EWT) —The therm-

istor is installed in a well in the factory-installed entering fluid

piping coming from the top of the brazed-plate heat exchanger.

CONDENSER LEAVING FLUID SENSOR (CNDL) — The

thermistor is installed in a well in the factory-installed leaving

fluid piping coming from the bottom of the brazed-plate heat

exchanger.

IMPORTANT: A shorted CCN bus cable will prevent some

routines from running and may prevent the unit from start-

ing. If abnormal conditions occur, unplug the connector. If

conditions return to normal, check the CCN connector and

cable. Run new cable if necessary. A short in one section of

the bus can cause problems with all system elements on the

bus.

Table 15 — Thermistor Designations

THERMISTOR CONNECTION

POINT

THERMISTOR INPUT

CLWT

CEWT

J8-13,14 (MBB) Cooler Leaving Fluid

J8-11,12 (MBB) Cooler Entering Fluid

J8-9,10 (MBB)

Circuit A Return Gas

Temperature (accessory)

RGTA

J8-6,7 (MBB),

LVT 4,13

Outdoor-Air Temperature

Sensor (accessory) or Dual

LWT Sensor

OAT

COOLER ENTERING FLUID SENSOR (CNDE) —The therm-

istor is installed in a well in the factory-installed entering fluid

piping coming from the top of the brazed-plate heat exchanger.

J8-5,6 (MBB)

LVT-3,4

Accessory Remote Space

Temperature Sensor

SPT

COMPRESSOR RETURN GAS TEMPERATURE SEN-

SOR (RGTA) — This accessory thermistor can be installed in

a well located in the suction line.

OUTDOOR-AIR TEMPERATURE SENSOR (OAT) —

This sensor is an accessory that is remotely mounted and used

for outdoor air temperature reset. See Table 15.

J8-1,2

Condenser Entering Water

Temperature Sensor

Condenser Leaving Water

Temperature Sensor

CNDE

CNDL

J8-3,4

LEGEND

LWT — Leaving Water Temperature

MBB — Main Base Board

DUAL LEAVING WATER TEMPERATURE SENSOR

(DLWT) — This input can be connected to the LVT. See Ta-

ble 15. For dual chiller applications (parallel only are support-

ed), connect the dual chiller leaving fluid temperature sensor

(5 kthermistor, Carrier part no. HH79NZ029) to the outside

air temperature input of the Master chiller. If outside air tem-

perature is required for reset applications, connect the sensor to

the Slave chiller and configure the slave chiller to broadcast the

value to the Master chiller.

REMOTE SPACE TEMPERATURE SENSOR (SPT) —

The sensor (part no. 33ZCT55SPT) is an accessory sensor that

is remotely mounted in the controlled space and used for space

temperature reset. The sensor should be installed as a wall-

mounted thermostat would be (in the conditioned space where

it will not be subjected to either a cooling or heating source or

direct exposure to sunlight, and 4 to 5 ft above the floor).

Table 16 — Status Inputs

STATUS SWITCH

Condenser Flow Switch

Dual Set Point

PIN CONNECTION POINT

LVT-11,17, J7-2, J6-2

LVT-12,13, J7-3,4

LVT-14,15

LVT-16,17, J6-2, J7-10

J9-11,12

Remote On/Off

Cooler Flow Switch Interlock

Compressor Fault Signal, A1

Compressor Fault Signal, A2

Compressor Fault Signal, A3

J9-5,6

J9-8,9

Table 17 — Output Relays

RELAY

NO.

DESCRIPTION

Energize Compressor A1

Energize Compressor A2

Energize Compressor A3

Energize Minimum Load Valve

Water Valve Open

Water Valve Close

Liquid Line Solenoid Valve

Crankcase Heater Relay (30MPA Only)

Chilled Water Pump

Condenser Fan/Pump

Alarm Relay

Space temperature sensor wires are to be connected to

terminals in the unit main control box. The space temperature

sensor includes a terminal block (SEN) and a RJ11 female

connector. The RJ11 connector is used access into the Carrier

Comfort Network^®(CCN) at the sensor.

K10

K11

To connect the space temperature sensor (Fig. 8):

1. Using a 20 AWG twisted pair conductor cable rated for

the application, connect 1 wire of the twisted pair to one

SEN terminal and connect the other wire to the other

SEN terminal located under the cover of the space

temperature sensor.

2. Connect the other ends of the wires to terminals 3 and 4

on LVT located in the unit control box.

Units on the CCN can be monitored from the space at the

sensor through the RJ11 connector, if desired. To wire the RJ11

connector into the CCN (Fig. 9):

Table 18 — CCN Communication Bus Wiring

PART NO.

MANUFACTURER

Regular Wiring

1895

Plenum Wiring

Alpha

American

Belden

Columbia

Manhattan

Quabik

—

A48301

884421

—

IMPORTANT: The cable selected for the RJ11 connector

wiring MUST be identical to the CCN communication bus

wire used for the entire network. Refer to Table 18 for

acceptable wiring.

A21451

8205

D6451

M13402

6130

M64430

—

1. Cut the CCN wire and strip ends of the red (+), white

(ground), and black (–) conductors. (If another wire color

scheme is used, strip ends of appropriate wires.)

Sensors — The electronic control uses 2 to 7 thermistors to

sense temperatures for controlling chiller operation. See

Table 15. These sensors are outlined below. Thermistors

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RED LED - STATUS

GREEN LED -

LEN (LOCAL EQUIPMENT NETWORK)

YELLOW LED -

CCN (CARRIER COMFORT NETWORK)

INSTANCE JUMPER

CEPL130346-01

K11

K10

STATUS

J10

LEN

CCN

Fig. 6 — Main Base Board

a30-4967

Fig. 7 — Enable/Off/Remote Contact Switch, and Emergency On/Off Switch Locations

T-55 SPACE

SENSOR

a30-4968

SPT (T10) PART NO. 33ZCT55SPT

SENSOR

CCN+

LVT

TO CCN

CCN GND

SEN

COMM 1

BUS (PLUG)

AT UNIT

CCN-

Fig. 8 — Typical Space Temperature

Sensor Wiring

Fig. 9 — CCN Communications Bus Wiring

to Optional Space Sensor RJ11 Connector

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2. Insert and secure the red (+) wire to terminal 5 of the

space temperature sensor terminal block.

3. Insert and secure the white (ground) wire to terminal 4 of

the space temperature sensor.

4. Insert and secure the black (–) wire to terminal 2 of the

space temperature sensor.

5. Connect the other end of the communication bus cable to

the remainder of the CCN communication bus.

stages. The chilled fluid temperature set point can be automati-

cally reset by the return fluid temperature, space, or outdoor-air

temperature reset features. It can also be reset from an external

4 to 20-mA signal (requires energy management module FIOP

or accessory).

The capacity control algorithm runs every 30 seconds. The

algorithm attempts to maintain the Control Point at the desired

set point. Each time it runs, the control reads the entering and

leaving fluid temperatures. The control determines the rate at

which conditions are changing and calculates 2 variables based

on these conditions. Next, a capacity ratio is calculated using

the 2 variables to determine whether or not to make any

changes to the current stages of capacity. This ratio value

ranges from –100 to +100%. If the next stage of capacity is a

compressor, the control starts (stops) a compressor when the

ratio reaches +100% (–100%). If installed, the minimum load

valve solenoid will be energized with the first stage of capacity.

Minimum load valve value is a fixed 30% in the total capacity

calculation. The control will also use the minimum load valve

solenoid as the last stage of capacity before turning off the last

compressor. A delay of 90 seconds occurs after each capacity

step change. Refer to Table 19.

MINUTES LEFT FOR START — This value is displayed

only in the network display tables (using Service Tool,

ComfortVIEW™ or ComfortWORKS^®software) and

represents the amount of time to elapse before the unit will start

its initialization routine. This value can be zero without the

machine running in many situations. This can include being

unoccupied, ENABLE/OFF/REMOTE CONTACT switch in

the OFF position, CCN not allowing unit to start, Demand

Limit in effect, no call for cooling due to no load, and alarm or

alert conditions present. If the machine should be running and

none of the above are true, a minimum off time (DELY, see

below) may be in effect. The machine should start normally

once the time limit has expired.

Energy Management Module (Fig. 10) — This

factory-installed option (FIOP) or field-installed accessory is

used for the following types of temperature reset, demand

limit, and/or ice features:

•

4 to 20 mA leaving fluid temperature reset (requires

field-supplied 4 to 20 mA generator)

4 to 20 mA cooling set point reset (requires field-

supplied 4 to 20 mA generator)

Discrete inputs for 2-step demand limit (requires field-

supplied dry contacts capable of handling a 24 vac,

50 mA load)

4 to 20 mA demand limit (requires field-supplied 4 to

20 mA generator)

•

Discrete input for Ice Done switch (requires field-

supplied dry contacts capable of handling a 24 vac,

50 mA load)

See Demand Limit and Temperature Reset sections on

pages 27 and 31 for further details.

CAUTION

Care should be taken when interfacing with other manufac-

turer’s control systems due to possible power supply

differences, full wave bridge versus half wave rectification.

The two different power supplies cannot be mixed.

ComfortLink™ controls use half wave rectification. A

signal isolation device should be utilized if a full wave

bridge signal generating device is used.

MINUTES

OFF

TIME

(ConfigurationOPT2

DELY) — This user-configurable time period is used by the

control to determine how long unit operation is delayed after

power is applied/restored to the unit. Typically, this time period

is configured when multiple machines are located on a single

site. For example, this gives the user the ability to prevent all

the units from restarting at once after a power failure. A value

of zero for this variable does not mean that the unit should be

running.

Loss-of-Cooler Flow Protection —

proof-of-

cooler flow device is factory installed in all chillers.

Condenser Flow Protection — A proof-of-condens-

er flow protection accessory can be field installed in the con-

denser water piping of all chillers. The unit must be configured

for the input to be enabled.

LEAD/LAG DETERMINATION — This is a configurable

choice and is factory set to be automatic for all units unless the

unit is equipped with minimum load, then circuit A is lead

(ConfigurationOPT2 LLCS). The value can be changed

to Circuit A or Circuit B leading as desired. Set at automatic,

the control will sum the current number of logged circuit starts

and one-quarter of the current operating hours for each circuit.

The circuit with the lowest sum is started first. Changes to

which circuit is the lead circuit and which is the lag are also

made when total machine capacity is at 100% or when there is

a change in the direction of capacity (increase or decrease) and

each circuit’s capacity is equal.

Thermostatic Expansion Valves (TXV) — All

units are equipped from the factory with conventional TXVs.

The 30MPA units and 30MPW units with medium temperature

brine also have factory-installed liquid line solenoids. The liq-

uid line solenoid valves are not intended to be a mechanical

shut-off. For 30MPW units, when service is required, reclaim

the refrigerant from the system.

For 30MPA units when service is required, the compressor

and evaporator can be serviced by closing the factory-installed

liquid line service valve and field-installed discharge line ser-

vice valve. After the valves are closed, reclaim the refrigerant

from the system.

The TXV is set at the factory to maintain approximately 8 to

12° F (4.4 to 6.7° C) suction superheat leaving the cooler by

monitoring the proper amount of refrigerant into the cooler. All

TXVs are adjustable, but should not be adjusted unless abso-

lutely necessary.

CAPACITY CONTROL OVERRIDES — The following over-

rides will modify the normal operation of the routine.

Deadband Multiplier — The user configurable Deadband

Multiplier (ConfigurationSLCTZ.GN) has a default

value of 1.0. The range is from 1.0 to 4.0. When set to other

than 1.0, this factor is applied to the capacity Load/Unload

Factor. The larger this value is set, the longer the control will

delay between adding or removing stages of capacity. Figure

11 shows how compressor starts can be reduced over time if

the leaving water temperature is allowed to drift a larger

amount above and below the set point. This value should be set

in the range of 3.0 to 4.0 for systems with small loop volumes.

Figure 12 shows the operating envelope for the compressor.

Capacity Control — The control system cycles com-

pressors, digital scroll modulting solenoid (if equipped), and

minimum load valve solenoids (if equipped) to maintain the

user-configured leaving chilled fluid temperature set point. En-

tering fluid temperature is used by the main base board (MBB)

to determine the temperature drop across the cooler and is used

in determining the optimum time to add or subtract capacity

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First Stage Override — If the current capacity stage is zero,

the control will modify the routine with a 1.2 factor on adding

the first stage to reduce cycling. This factor is also applied

when the control is attempting to remove the last stage of

capacity.

Slow Change Override — The control prevents the capacity

stages from being changed when the leaving fluid temperature

is close to the set point (within an adjustable deadband) and

moving towards the set point.

CEBD430351-0396-01C

LEN

STATUS

TEST 2

GREEN LED -

LEN (LOCAL EQUIPMENT NETWORK)

ADDRESS

DIP SWITCH

RED LED - STATUS

Fig. 10 — Energy Management Module

Table 19 — Part Load Data Percent Displacement, Standard Units with Minimum Load Valve

CONTROL

STEPS

CAPACITY STEPS

(% Displacement)

30MP UNIT SIZE

015

18*

100

25*

020

030

100

34*

100

21*

040

100

22*

045

100

*Hot gas bypass (minimum load) valve energized.

NOTE: These capacity steps may vary due to different capacity

staging sequences.

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2 STARTS

DEADBAND EXAMPLE

200

400

600

800

1000

3 STARTS

TIME (SECONDS)

STANDARD

DEADBAND

LEGEND

LWT — Leaving Water Temperature

MODIFIED

DEADBAND

Fig. 11 — Deadband Multiplier

170

160

150

140

130

120

110

100

-30

-20

-10

SST (F)

LEGEND

a30-4969

SCT — Saturated Condensing Temperature

SST

—

Saturated Suction Temperature

Fig. 12 — Operating Envelope for R-410A Compressor

Ramp Loading

—

Ramp

(Configura-

may be used as needed to obtain leaving fluid temperature

close to set point.

tionSLCTCRMP) limits the rate of change of leaving

fluid temperature. If the unit is in a Cooling mode and config-

ured for Ramp Loading, the control makes 2 comparisons be-

fore deciding to change stages of capacity. The control calcu-

lates a temperature difference between the control point and

leaving fluid temperature. If the difference is greater than 4° F

(2.2° C) and the rate of change (°F or °C per minute) is more

than the configured Cooling Ramp Loading value (CRMP),

the control does not allow any changes to the current stage of

capacity.

Cooler Freeze Protection — The control will try to prevent

shutting the chiller down on a Cooler Freeze Protection alarm

by removing stages of capacity. If the cooler fluid selected

is Water, the freeze point is 34 F (1.1 C). If the cooler fluid

selected is Brine, the freeze point is the Brine Freeze Point (Set

PointsFRZBR.FZ). This alarm condition (A207) only

references leaving fluid temperature and NOT Brine Freeze

point. If the cooler leaving fluid temperature is less than the

freeze point plus 2.0° F (1.1° C), the control will immediately

remove one stage of capacity. This can be repeated once every

30 seconds.

Low Saturated Suction Protection — The control will try to

prevent shutting a circuit down due to low saturated suction

conditions by removing stages of capacity. The circuit alert

condition (T116) compares saturated suction temperature to the

configured Brine Freeze Point (Set PointsFRZBR.FZ).

The Brine Freeze point is a user-configurable value that must

be left at 34 F (1.1 C) for 100% water systems. A lower value

Low Entering Fluid Temperature Unloading — When the

entering fluid temperature is below the control point, the

control will attempt to remove 25% of the current stages being

used. If exactly 25% cannot be removed, the control removes

an amount greater than 25% but no more than necessary. The

lowest stage will not be removed.

Hot Gas Bypass — If equipped, the hot gas bypass valve is

energized only when one compressor is running on circuit A. If

the close control feature is enabled the hot gas bypass valve

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may be entered for systems with brine solutions, but this value

should be set according to the freeze protection level of the

brine mixture. Failure to properly set this brine freeze point val-

ue may permanently damage the brazed plate heat exchanger.

The control will initiate Mode 7 (Circuit A) to indicate a cir-

cuit’s capacity is limited and that eventually the circuit may

shut down.

Cooling Set Point Select

SINGLE — Unit operation is based on Cooling Set Point 1

(Set PointsCOOLCSP.1).

DUAL SWITCH — Unit operation is based on Cooling Set

Point 1 (Set PointsCOOLCSP.1) when the Dual Set

Point switch contacts are open and Cooling Set Point 2 (Set

PointsCOOLCSP.2) when they are closed.

Operation of Machine Based on Control

Method and Cooling Set Point Selection Set-

tings — Machine On/Off control is determined by the

DUAL CCN OCCUPIED — Unit operation is based on

Cooling Set Point 1 (Set PointsCOOLCSP.1) during the

Occupied mode and Cooling Set Point

(Set

configuration of the Control Method

(Configuration

PointsCOOLCSP.2) during the Unoccupied mode as

configured under the local occupancy schedule accessible only

from CCN. Schedule Number in Table SCHEDOVR (See Ap-

pendix B) must be configured to 1. If the Schedule Number is

set to 0, the unit will operate in a continuous 24-hr Occupied

mode. Control method must be configured to 0 (switch). See

Table 20.

OPT2CTRL) and Cooling Set Point Select

(ConfigurationSLCTCLSP) variables. All units are fac-

tory configured with Cooling Set Point Select set to 0 (single

set point). With the control method set to 0, simply switching

the Enable/Off/Remote Contact switch to the Enable or

Remote Contact position (external contacts closed) will put the

chiller in an occupied state. The control mode (Run

StatusVIEWSTAT) will be 1 (OFF LOCAL) when the

switch is Off and will be 5 (ON LOCAL) when in the Enable

position or Remote Contact position with external contacts

closed.

4 TO 20 mA INPUT — Unit operation is based on an external

4 to 20 mA signal input to the Energy Management Module

(EMM).

Cooler Pump Control — The AquaSnap® 30MP ma-

chines are configured with the Cooler Pump Control (Configu-

rationOPT1CPC) = ON.

Two other control methods are available for Machine On/

Off control:

The maximum load allowed for the Chilled Water Pump

Starter is 5 VA sealed, 10 VA inrush at 24 volts. The starter coil

is powered from the chiller control system. The starter should

be wired between LVT 24 and TB3-1. If equipped, the field-in-

stalled chilled water pump starter auxiliary contacts should be

connected in series with the chilled water flow switch between

LVT 16 and LVT 17.

OCCUPANCY

SCHEDULE

(ConfigurationOPT2

CTRL = 1) — The main base board will use the operating

schedules as defined under the Time Clock mode in the scroll-

ing marquee display. These schedules are identical. The sched-

ule number must be set to 1 for local schedule.

The schedule number can be set anywhere from 65 to 99

for operation under a CCN global schedule. The Enable/Off/

Remote Contact must be in the Enable or Remote Contact posi-

tion. The control mode (Run StatusVIEWSTAT) will be

1 when the switch is Off. The control mode will be 3 when the

Enable/Off/Remote Contact switch input is On and the time of

day is during an unoccupied period. Similarly, the control

mode will be 7 when the time of day is during an occupied

period.

Ice Mode — When Ice Mode is enabled Cooling Setpoint

Select must be set to Dual Switch, Dual 7 day or Dual CCN

Occupied and the Energy Management Module (EMM) must

be installed. Unit operation is based on Cooling Setpoint 1

(CSP.1) during the Occupied mode, Ice Setpoint (CSP.3) dur-

ing the Unoccupied mode with the Ice Done contacts open and

Cooling Setpoint 2 (CSP.2) during the Unoccupied mode with

the Ice Done contacts closed. These 3 set points can be utilized

to develop your specific control strategy.

CCN SCHEDULE (ConfigurationOPT2CTRL

2) — An external CCN device such as Chillervisor System

Manager controls the On/Off state of the machine. This CCN

device forces the variable ‘CHIL_S_S’ between Start/Stop to

control the chiller. The control mode (Run Status

VIEWSTAT) will be 1 when the switch is Off. The con-

trol mode will be 2 when the Enable/Off/Remote Contact

switch input is On and the CHIL_S_S variable is ‘Stop.’

Similarly, the control mode will be 6 when the CHIL_S_S vari-

able is ‘Start.’

Service Test (See Table 4) — Both main power and

control circuit power must be on.

The Service Test function should be used to verify proper

operation of condenser output, compressors, minimum load

valve solenoid (if installed), cooler pump, and remote alarm re-

lay. To use the Service Test mode, the Enable/Off/Remote Con-

tact switch must be in the OFF position. Use the display keys

and Table 4 to enter the mode and display TEST. Press

Table 20 illustrates how the control method and cooling set

point select variables direct the operation of the chiller and the

set point to which it controls. The illustration also shows the

ON/OFF state of the machine for the given combinations.

twice so that OFF flashes. Enter the password if re-

ENTER

quired. Use either arrow key to change the TEST value to the

ON position and press

. Press

and the

ESCAPE

ENTER

button to enter the OUTS or COMP sub-mode.

Table 20 — Control Methods and Cooling Set Points

COOLING SET POINT SELECT (CLSP)

CONTROL

OCCUPANCY

TYPE

STATE

(CTRL)

(single)

(dual, switch)

(dual, occ)

(4 to 20 mA)

Occupied

Unoccupied

Occupied

Unoccupied

Occupied

Unoccupied

ON,CSP1

OFF

ON,CSP1

ON*

OFF

ON*

ON,CSP1

ON,CSP2

Illegal

ON,CSP1

ON,CSP2

ON†

OFF

ON†

0 (switch)

2 (Occupancy)

3 (CCN)

*Dual set point switch input used. CSP1 used when switch input is open. CSP2 used when switch input is closed.

†Cooling set point determined from 4 to 20 mA input to energy management module (EMM) to terminals TB6-3,5.

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Test the condenser output, cooler pump, liquid line solenoid

valve (30MPA only), crankcase heater, water valve (accesso-

ry), and alarm relay by changing the item values from OFF to

ON. These discrete outputs are then turned off if there is no

keypad activity for 10 minutes. When testing compressors,

lead compressor must be started first. All compressor outputs

can be turned on, but the control will limit the rate by staging

one compressor per minute. Minimum load valve can be tested

with the compressors on or off. The relays under the COMP

mode will stay on for 10 minutes if there is no keypad activity.

Compressors will stay on until they are turned off by the opera-

tor. The Service Test mode will remain enabled for as long as

there is one or more compressors running. All safeties are mon-

itored during this test and will turn a compressor, circuit or the

machine off if required. Any other mode or sub-mode can be

accessed, viewed, or changed during the TEST mode. The

STAT item (Run StatusVIEW) will display “0” as long as

the Service mode is enabled. The TEST sub-mode value must

be changed back to OFF before the chiller can be switched to

Enable or Remote contact for normal operation.

Configuring and Operating Dual Chiller Con-

trol — The dual chiller routine is available for the control of

two units supplying chilled fluid on a common loop. This

control algorithm is designed for parallel fluid flow arrangement

only. One chiller must be configured as the master chiller, the

other as the slave. An additional leaving fluid temperature

thermistor (Dual Chiller LWT) must be installed as shown in

Fig. 13 and 14 and connected to the master chiller. Refer to Sen-

sors section, page 19, for wiring. The CCN communication bus

must be connected between the two chillers. Connections can be

made to the CCN screw terminals on LVT. Refer to Carrier

Comfort Network^®Interface section, page 14, for wiring infor-

mation. Configuration examples are shown in Tables 21 and 22.

Refer to Table 21 for dual chiller configuration. In this

example the master chiller will be configured at address 1 and

the slave chiller at address 2. The master and slave chillers

must reside on the same CCN bus (ConfigurationCCN

CCNB) but cannot have the same CCN address (Configu-

rationCCNCCNA). Both master and slave chillers must

have Lead/Lag Chiller Enable (ConfigurationRSET

LLEN) configured to ENBL. Master/Slave Select (Config-

urationRSET MSSL) must be configured to MAST for

the master chiller and SLVE for the slave. Also in this example,

the master chiller will be configured to use Lead/Lag Balance

Select (ConfigurationRSETLLBL) and Lead/Lag Bal-

ance Delta (ConfigurationRSETLLBD) to even out the

chiller run-times weekly. The Lag Start Delay (Configura-

tionRSETLLDY) feature will be set to 10 minutes. This

will prevent the lag chiller from starting until the lead chiller

has been at 100% capacity for the length of the delay time. Par-

allel configuration (ConfigurationRSETPARA) can

only be configured to YES. The variables LLBL, LLBD and

LLDY are not used by the slave chiller.

Dual chiller start/stop control is determined by configura-

tion of Control Method (ConfigurationOPT1CTRL) of

the Master chiller. The Slave chiller should always be config-

ured for CTRL=0 (Switch). If the chillers are to be controlled

by Remote Contacts, both Master and Slave chillers should be

enabled together. Two separate relays or one relay with

two sets of contacts may control the chillers. The Enable/Off/

Remote Contact switch should be in the Remote Contact

position on both the Master and Slave chillers. The Enable/Off/

Remote Contact switch should be in the Enable position for

CTRL=2 (Occupancy) or CTRL=3 (CCN Control).

Both chillers will stop if the Master chiller Enable/Off/

Remote Contact switch is in the Off position. If the Emergency

Stop switch is turned off or an alarm is generated on the Master

chiller the Slave chiller will operate in a Stand-Alone mode.

If the Emergency Stop switch is turned off or an alarm is

generated on the Slave chiller the Master chiller will operate in

a Stand-Alone mode.

Cooler Pump Sequence of Operation — At any-

time the unit is in an ON status, as defined by the one of the

following conditions, the cooler pump relay will be enabled.

1. The Enable-Off-Remote Switch in ENABLE,

(CTRL=0).

2. Enable-Off-Remote Switch in REMOTE with

Start-Stop remote contact closure (CTRL=0).

3. An Occupied Time Period from an Occupancy Schedule

in combination with items 1 or 2 (CTRL=2).

4. A CCN Start-Stop Command to Start in combination

with items 1 or 2 (CTRL=3).

There are certain alarm conditions and Operating Modes

that will turn the cooler pump relay ON. This sequence will de-

scribe the normal operation of the pump control algorithm.

When the unit cycles from an "On" state to an "Off' state,

the cooler pump output will remain energized for the Cooler

Pump Shutdown Delay (ConfigurationOPT1PM.DY).

This is configurable from 0 to 10 minutes. The factory default

is 1 minute. If the pump output was deenergized during the

transition period, the pump output will not be energized.

The Cooler Pump Relay will be energized when the ma-

chine is "On." The chilled water pump interlock circuit consists

of a chilled water flow switch and a field-installed chilled water

pump interlock. If the chilled water pump interlock circuit does

not close within five (5) minutes of starting, an A200 - Cooler

Flow/Interlock failed to close at Start-Up alam1 will be gener-

ated and chiller will not be allowed to start.

If the chilled water pump interlock or chilled water flow

switch opens for at least three (3) seconds after initially being

closed, an A201 - Cooler Flow 1 Interlock Contacts Opened

During Normal Operation alarm will be generated and the ma-

chine will stop.

The master chiller controls the slave chiller by changing its

Control Mode (Run StatusVIEWSTAT) and its operat-

ing setpoint or Control Point (Run StatusVIEWCT.PT).

Condenser Pump/Condenser Fan Output Con-

trol — The main base board (MBB) has the capability to

control either a condenser fan output or a condenser pump out-

put depending on the unit configuration.

If the unit is configured for Configuration

UNITTYPE = 2 (air cooled), then the output will be off as

long as capacity is equal to 0 and will be energized 5 seconds

before a compressor is started and remain energized until ca-

pacity is 0 again.

If the unit is configured for Configuration

UNITTYPE = 3 (water cooled), then the output will be used

for consenser pump control and additional configuration is re-

quired. To enable the condenser pump control use Configura-

tionOPT1DPME. The pump can be configured for no

pump control, on when occupied, and on when capacity is

greater than 0.

THERMISTOR

WIRING*

LEAVING

FLUID

MASTER

CHILLER

RETURN

FLUID

SLAVE

CHILLER

INSTALL DUAL CHILLER LWT

LEAVING FLUID TEMPERATURE

THERMISTOR (T10) HERE

*Depending on piping sizes, use either:

• HH79NZ014 sensor/10HB50106801 well (3-in. sensor/well)

• HH79NZ029 sensor/10HB50106802 well (4-in. sensor/well)

Fig. 13 — Dual Chiller Thermistor Location

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Table 21 — Dual Chiller Configuration (Master Chiller Example)

SUB-MODE

ITEM

KEYPAD ENTRY

DISPLAY

ITEM EXPANSION

COMMENTS

DISP

UNIT

OPT1

ENTER

ESCAPE

CTRL

CONTROL METHOD

SWITCH

OPT2

CTRL

DEFAULT 0

OPT2

CCN

CCNA

CCNB

ENTER

CCN ADDRESS

DEFAULT 1

DEFAULT 0

CCNB

CCN

ENTER

CCN BUS NUMBER

ESCAPE

CCN

RSET

CRST

LLEN

DSBL

ENBL

LLEN

MSSL

MAST

MSSL

SLVA

PROCEED TO

SUBMODE RESET

RSET

ENTER

COOLING RESET TYPE

LEAD/LAG CHILLER ENABLE

15 ITEMS

SCROLLING STOPS

VALUE FLASHES

SELECT ENBL

LLEN

MSSL

SLVA

LLBL

ENTER

LEAD/LAG CHILLER ENABLE

CHANGE ACCEPTED

ESCAPE

MASTER /SLAVE SELECT

ENTER

DEFAULT MAST

ESCAPE

SLAVE ADDRESS

ENTER

SCROLLING STOPS

VALUE FLASHES

SELECT 2

ENTER

SLAVE ADDRESS

CHANGE ACCEPTED

ESCAPE

SLVA

LLBL

LEAD/LAG BALANCE SELECT

ENTER

SCROLLING STOPS

VALUE FLASHES

SELECT 2 - Automatic

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Table 21 — Dual Chiller Configuration (Master Chiller Example) (cont)

SUB-MODE

ITEM

KEYPAD ENTRY

DISPLAY

ITEM EXPANSION

COMMENTS

RSET

LLBL

ENTER

LEAD/LAG BALANCE SELECT

CHANGE ACCEPTED

ESCAPE

LLBL

LLBD

168

LLBD

LLDY

LEAD/LAG BALANCE DELTA

LLBD

LLDY

PARA

ENTER

DEFAULT 168

ESCAPE

LAG START DELAY

ENTER

SCROLLING STOPS

VALUE FLASHES

SELECT 10

ENTER

ESCAPE

ENTER

LAG START DELAY

CHANGE ACCEPTED

LLDY

RSET

YES

MASTER COMPLETE

NOTES:

1. Master Control Method (CTRL) can be configured as 0-Switch, 2-Occupancy or 3-CCN.

2. Parallel Configuration (PARA) cannot be changed.

Temperature Reset — The control system is capable of

handling leaving-fluid temperature reset based on return cooler

fluid temperature. Because the change in temperature through

the cooler is a measure of the building load, the return tempera-

ture reset is in effect an average building load reset method.

The control system is also capable of temperature reset based

on outdoor-air temperature (OAT), space temperature (SPT), or

from an externally powered 4 to 20 mA signal. Accessory sen-

sors must be used for SPT reset (33ZCT55SPT) and for OAT

reset (HH79NZ014). The energy management module (EMM)

must be used for temperature reset using a 4 to 20 mA signal.

See Tables 23 and 24.

DIMENSIONS in. (mm)

PART

NUMBER

10HB50106801

10HB50106802

3.10 (78.7)

4.10 (104.1)

1.55 (39.4)

1.28 (32.5)

0.505/0.495

0.61

DIA

6” MINIMUM

CLEARANCE FOR

THERMISTOR

REMOVAL

1/4 N.P.T.

Fig. 14 — Dual Leaving Water Thermistor Well

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Table 22 — Dual Chiller Configuration (Slave Chiller Example)

SUB-MODE

ITEM

KEYPAD ENTRY

DISPLAY

ITEM EXPANSION

COMMENTS

DISP

UNIT

OPT1

ENTER

CTRL

CONTROL METHOD

SWITCH

OPT2

CTRL

DEFAULT 0

ESCAPE

OPT2

CCN

CCNA

ENTER

CCN ADDRESS

SCROLLING STOPS

VALUE FLASHES

SELECT 2

(SEE NOTE 2)

CCN

CCNA

CCNB

ENTER

ESCAPE

ENTER

CCN ADDRESS

CHANGE ACCEPTED

CCN

DEFAULT 0

(SEE NOTE 3)

CCN BUS NUMBER

ESCAPE

CCN

RSET

CRST

LLEN

DSBL

ENBL

LLEN

MSSL

MAST

SLVE

MSSL

RSET

PROCEED TO

SUBMODE RSET

RSET

ENTER

COOLING RESET TYPE

LEAD/LAG CHILLER ENABLE

15 ITEMS

SCROLLING STOPS

VALUE FLASHES

SELECT ENBL

LLEN

MSSL

ENTER

LEAD/LAG CHILLER ENABLE

MASTER /SLAVE SELECT

CHANGE ACCEPTED

ESCAPE

ENTER

SCROLLING STOPS

VALUE FLASHES

SELECT SLVE

ENTER

ESCAPE

MASTER /SLAVE SELECT

CHANGE ACCEPTED

SLAVE COMPLETE

NOTES:

1. Slave Control Method (CTRL) must be configured for 0.

2. Slave CCN Address (CCNA) must be different than Master.

3. Slave CCN Bus Number (CCNB) must be the same as Master

4. Slave does not require SLVA, LLBL, LLBD, or LLDY to be configured.

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Table 23 — Menu Configuration of 4 to 20 mA Cooling Set Point Control

MODE

(RED LED)

KEYPAD

ENTRY

KEYPAD

ENTRY

ITEM

EXPANSION

SUB-MODE

DISP

ITEM

DISPLAY

COMMENT

ENTER

UNIT

OPT1

OPT2

CCN

CONFIGURATION

RSET

SLCT

ENTER

CLSP

COOLING SETPOINT SELECT

Scrolling Stops

Flashing ‘0’

Select ‘3’

ENTER

Change Accepted

Table 24 — 4 to 20 mA Reset

KEYPAD

ITEM

DISPLAY

SUB-MODE

RSET

ITEM

COMMENT

ENTRY

EXPANSION

0 = no reset

1 = 4 to 20 mA input

2 = Outdoor air temp

3 = Return Fluid

COOLING RESET

ENTER

CRST

TYPE

4 = Space Temperature

5.0 F

(2.8 C)

DEGREES COOL

RESET

Default: 0° F (0° C) Reset at 20 mA

Range: –30 to 30 F (–16.7 to 16.7 C)

MA.DG

NOTE: The example above shows how to configure the chiller for

4 to 20 mA reset. No reset will occur at 4.0 mA input, and a 5.0 F

reset will occur at 20.0 mA. An EMM (energy management module)

is required.

RM.NO should be set to the temperature that no reset should

occur. The variable RM.F should be set to the temperature that

maximum reset is to occur. The variable RM.DG should be set

to the maximum amount of reset desired. Figures 15 and 16 are

examples of outdoor air and space temperature resets.

To use return reset, four variables must be configured. In the

Configuration mode under the sub-mode RSET, items CRST,

RT.NO, RT.F and RT.DG must be properly set. See Table 26

— Configuring Return Temperature Reset. This example pro-

vides 5.0 F (2.8 C) chilled water set point reset at 2.0 F (1.1 C)

cooler T and 0° F (0° C) reset at 10.0 F (5.6 C) cooler T. The

variable RT.NO should be set to the cooler temperature differ-

ence (T) where no chilled water temperature reset should oc-

cur. The variable RT.F should be set to the cooler temperature

difference where the maximum chilled water temperature reset

should occur. The variable RM.DG should be set to the maxi-

mum amount of reset desired.

IMPORTANT: Care should be taken when interfacing with

other control systems due to possible power supply differ-

ences: full wave bridge versus half wave rectification. Con-

nection of control devices with different power supplies

may result in permanent damage. ComfortLink™ controls

incorporate power supplies with half wave rectification. A

signal isolation device should be utilized if the signal gen-

erator incorporates a full wave bridge rectifier.

To use outdoor air or space temperature reset, four variables

must be configured. In the Configuration mode under the sub-

mode RSET, items (ConfigurationRSETCRST),

(ConfigurationRSETRM.NO),

(Configuration

RSETRM.F), and (ConfigurationRSETRT.DG)

must be properly set. See Table 25 — Configuring Outdoor Air

and Space Temperature Reset. The outdoor air reset example

provides 0° F (0° C) chilled water set point reset at 85.0 F

(29.4 C) outdoor-air temperature and 15.0 F (8.3 C) reset at

55.0 F (12.8 C) outdoor-air temperature. The space tempera-

ture reset example provides 0° F (0° C) chilled water set point

reset at 72.0 F (22.2 C) space temperature and 6.0 F (3.3 C) re-

set at 68.0 F (20.0 C) space temperature. The variable CRST

should be configured for the type of reset desired. The variable

To verify that reset is functioning correctly proceed to Run

Status mode, sub-mode VIEW, and subtract the active set point

(Run StatusVIEWSETP) from the control point (Run

StatusVIEWCTPT) to determine the degrees reset.

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Table 25 — Configuring Outdoor Air and Space Temperature Reset

DISPLAY

MODE

(RED LED)

KEYPAD

ENTRY

SUB-

MODE

KEYPAD

ENTRY

ITEM

EXPANSION

ITEM

COMMENT

Outdoor

Air

Space

ENTER

DISP

UNIT

OPT1

OPT2

CCN

2 = Outdoor-Air Temperature

(Connect to LVT-4,5)

4 = Space Temperature

(Connect to LVT-3,4)

CONFIGURATION

ENTER

COOLING RESET

TYPE

RSET

CRST

REMOTE - NO

RESET TEMP

Default: 125.0 F (51.7 C)

Range: 0° to125 F

RM.NO*

RM.F

85 °F

55 °F

72 °F

68 °F

REMOTE - FULL

RESET TEMP

Default: 0.0° F (-17.7 C)

Range: 0° to 125 F

Default: 0° F (0° C)

Range: –30 to 30 F

(–34.4 to -1.1 °C)

REMOTE - DEGREES

RESET

RM.DG

15 °F

6 °F

*1 item skipped in this example.

Table 26 — Configuring Return Temperature Reset

MODE

(RED LED)

KEYPAD

ENTRY

KEYPAD

ENTRY

ITEM

SUB-MODE

DISP

ITEM DISPLAY

COMMENT

EXPANSION

ENTER

TEST

TYPE

FLUD

CTRL

ON/OFF

TEST DISPLAY LEDs

UNIT TYPE

UNIT

OPT1

COOLER FLUID

CONTROL METHOD

OPT2

CCN

0 = No Reset

ENTER

1 = 4 to 20 mA Input (EMM required)

(Connect to EMM TB6-2,3)

CONFIGURATION

RSET

CRST

COOLING RESET TYPE 2 = Outdoor-Air Temperature

3 = Return Fluid

4 = Space Temperature

(Connect to TB5-5,6)

RETURN FLUID - NO

RESET TEMP

Default: 10.0 F (5.6 C)

Range: 0° to10 F COOLER T

RT.NO* 10.0 F

RETURN FLUID - FULL Default: 0 F (–17.8 C)

RT.F

2.0 F

5.0 F

RESET TEMP

Range: 0° to 30 F COOLER T

RETURN - DEGREES

RESET

Default: 0 F (0 C)

Range: –30 to 30°F (–16.7 to 16.7 C)

RT.DG

*1 item skipped in this example.

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Under normal operation, the chiller will maintain a constant

leaving fluid temperature approximately equal to the chilled

fluid set point. As the cooler load varies, the entering cooler

fluid will change in proportion to the load as shown in Fig. 17.

Usually the chiller size and leaving-fluid temperature set point

are selected based on a full-load condition. At part load, the flu-

id temperature set point may be colder than required. If the

leaving fluid temperature was allowed to increase at part load,

the efficiency of the machine would increase.

Return temperature reset allows for the leaving temperature

set point to be reset upward as a function of the return fluid

temperature or, in effect, the building load.

Demand Limit — Demand limit is a feature that allows

the unit capacity to be limited during periods of peak energy us-

age. There are 3 types of demand limiting that can be config-

ured. The first type is through 2-stage switch control, which will

reduce the maximum capacity to 2 user-configurable percentag-

es. The second type is by 4 to 20 mA signal input which will re-

duce the maximum capacity linearly between 100% at a 4 mA

input signal (no reduction) down to the user-configurable level

at a 20 mA input signal. The third type uses the CCN Loadshed

module and has the ability to limit the current operating capaci-

ty to maximum and further reduce the capacity if required.

LEGEND

EWT — Entering Water (Fluid) Temperature

LWT

—

Leaving Water (Fluid) Temperature

Fig. 17 — Standard Chilled Fluid

Temperature Control — No Reset

To use demand limit, select the type of demand limiting to

use. Then configure the demand limit set points based on the

type selected.

NOTE: The 2-stage switch control and 4 to 20-mA input sig-

nal types of demand limiting require the energy management

module (EMM).

DEMAND LIMIT (2-Stage Switch Controlled) — To con-

figure demand limit for 2-stage switch control set the Demand

Limit Select (ConfigurationRSETDMDC) to 1. Then

configure the 2 Demand Limit Switch points (Configura-

tionRSETDLS1) and (ConfigurationRSETDLS2)

to the desired capacity limit. See Table 27. Capacity steps are

controlled by 2 relay switch inputs field wired to LVT as shown

in Fig. 5.

For demand limit by 2-stage switch control, closing the first

stage demand limit contact will put the unit on the first demand

limit level. The unit will not exceed the percentage of capacity

entered as Demand Limit Switch 1 set point (DLS1). Closing

contacts on the second demand limit switch prevents the unit

from exceeding the capacity entered as Demand Limit Switch

2 set point. The demand limit stage that is set to the lowest de-

mand takes priority if both demand limit inputs are closed. If

the demand limit percentage does not match unit staging, the

unit will limit capacity to the closest capacity stage.

LEGEND

To disable demand limit configure DMDC to 0. See

Table 27.

LWT — Leaving Water (Fluid) Temperature

Fig. 15 — Outdoor-Air Temperature Reset

EXTERNALLY POWERED DEMAND LIMIT (4 to

20 mA Controlled) — To configure demand limit for 4 to 20

mA control set the Demand Limit Select (Configura-

tionRSETDMDC) to 2. Then configure the Demand

Limit at 20 mA (ConfigurationRSETDM20) to the

maximum loadshed value desired. Connect the output from an

externally powered 4 to 20 mA signal to terminal block LVT,

terminals 7 and 8 (+,–). Refer to the unit wiring diagram for

these connections to the optional/accessory energy manage-

ment module and terminal block. The control will reduce al-

lowable capacity to this level for the 20 mA signal. See Table

27 and Fig. 18.

CAUTION

Care should be taken when interfacing with other manufac-

turer’s control systems, due to possible power supply

differences, full wave bridge versus half wave rectification.

The two different power supplies cannot be mixed.

ComfortLink™ controls use half wave rectification. A sig-

nal isolation device should be utilized if a full wave bridge

signal generating device is used.

LEGEND

LWT — Leaving Water (Fluid) Temperature

Fig. 16 — Space Temperature Reset

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DEMAND LIMIT (CCN Loadshed Controlled) — To con-

figure Demand Limit for CCN Loadshed control set the De-

mand Limit Select (ConfigurationRSETDMDC) to 3.

Then configure the Loadshed Group Number (Configura-

tionRSETSHNM), Loadshed Demand Delta (Configu-

rationRSETSHDL), and Maximum Loadshed Time

(ConfigurationRSETSHTM). See Table 27.

The Loadshed Group number is established by the CCN

system designer. The ComfortLink™ controls will respond to a

Redline command from the Loadshed control. When the

Redline command is received, the current stage of capacity is

set to the maximum stages available. Should the loadshed con-

trol send a Loadshed command, the ComfortLink controls will

reduce the current stages by the value entered for Loadshed

Demand delta. The Maximum Loadshed Time is the maximum

length of time that a loadshed condition is allowed to exist. The

control will disable the Redline/Loadshed command if no

Cancel command has been received within the configured

maximum loadshed time limit.

Cooling Set Point (4 to 20 mA) — A field supplied

and generated, externally powered 4 to 20 mA signal can be

used to provide the leaving fluid temperature set point. Connect

the signal to LVT-10,8 (+,–). See Table 27 for instructions to

enable the function. Figure 19 shows how the 4 to 20 mA sig-

nal is linearly calculated on an overall 10 F to 80 F range for

fluid types (ConfigurationOPT1FLUD) 1 or 2. The set

point will be limited by the fluid (FLUD) type. Be sure that the

chilled water loop is protected at the lowest temperature.

100

50% CAPACITY AT 20 mA

100% CAPACITY AT 4 mA

75% CAPACITY AT 12 mA

DEMAND LIMIT SIGNAL – 4 - 20 mA INPUT

Fig. 18 — 4 to 20-mA Demand Limiting

100

(38)

(32)

(27)

(21)

MAXIMUM

SET POINT

70 F (21.1 C)

(15)

(10)

(4.4)

(FLUD = 1) MINIMUM

SET POINT 38 F (3.3 C)

(-1)

(-7)

(FLUD = 2) MINIMUM

SET POINT 14 F (-10 C)

(-12)

(-17)

6.3

8.6

10.9

13.1

15.4

17.7

4 TO 20 mA SIGNAL TO EMM

EMM — Energy Management Module

Fig. 19 — Cooling Set Point (4 to 20 mA)

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Table 27 — Configuring Demand Limit

KEYPAD

ENTRY

KEYPAD

MODE

SUB-MODE

DISP

ITEM

TEST

TYPE

FLUD

CTRL

CCNA

CRST

DISPLAY

ITEM EXPANSION

Test Display LEDs

Unit Type

COMMENT

ENTRY

CONFIGURATION

ENTER

ON/OFF

ENTER

UNIT

OPT1

Cooler Fluid

OPT2

Control Method

CCN Address

CCN

RSET

Cooling Reset Type

Default: 0

0 = None

1 = Switch

DMDC*

Demand Limit Select

2 = 4 to 20 mA Input

3 = CCN Loadshed

Default: 100%

DM20

SHNM

SHDL

SHTM

DLS1

DLS2

XXX %

XXX

Demand Limit at 20 mA

Range: 0 to 100

Loadshed Group

Number

Default: 0

Range: 0 to 99

Loadshed Demand

Delta

Default: 0%

Range: 0 to 60%

XXX%

XXX MIN

XXX %

Maximum Loadshed

Time

Default: 60 min.

Range: 0 to 120 min.

Demand Limit

Switch 1

Default: 80%

Range: 0 to 100%

Demand Limit

Switch 2

Default: 50%

Range: 0 to 100%

*Seven items skipped in this example.

5. Oil should be visible in the compressor sightglass(es).

See Fig. 20. An acceptable oil level in the compressors is

from ¹/₈to ³/₈of sight glass when the compressors are off.

Adjust the oil level as required. See Oil Charge section on

page 37 for Carrier approved oils.

6. Crankcase heaters must be firmly attached to compres-

sors, and must be on for 24 hours prior to start-up

(30MPA units only).

PRE-START-UP

IMPORTANT: Before beginning Pre-Start-Up or Start-Up,

complete Start-Up Checklist for 30MP Liquid Chiller at

end of this publication (page CL-1 to CL-8). The checklist

assures proper start-up of a unit, and provides a record of

unit condition, application requirements, system informa-

tion, and operation at initial start-up.

7. Electrical power source must agree with unit nameplate.

Do not attempt to start the chiller until following checks

have been completed.

8. Check rotation of scroll compressors. Monitor control

alarms during first compressor start up for reverse rota-

tion protection alarm.

System Check

1. Check all auxiliary components, such as chilled fluid

pumps, air-handling equipment, condenser pump or other

equipment to which the chiller supplies liquid. Consult

manufacturer's instructions. Verify that any pump inter-

lock contacts have been properly installed. If the unit has

field-installed accessories, be sure all are properly in-

stalled and wired correctly. Refer to unit wiring diagrams.

Table 28 — Minimum Flow Rates and Minimum

Loop Volume (for Comfort Cooling)

MINIMUM EVAPORATOR

EVAPORATOR CONDENSER*

LOOP VOLUME

UNIT SIZE

Gal./Min L/s Gal./Min L/s

Gal.

30MP015

30MP020

30MP030

30MP040

30MP045

1.4

1.8

2.7

3.5

4.0

1.4

1.8

2.7

3.5

4.0

46.2

60.9

92.4

78.4

91.6

174.9

230.5

349.7

296.7

346.7

2. Use the scrolling marquee display to adjust the Cooling

Set Point.

3. Fill chilled fluid circuit with clean water (with recom-

mended inhibitor added) or other non-corrosive fluid to

be cooled. Bleed all air out of the high points of the sys-

tem. If chilled water is to be maintained at a temperature

below 40 F (4.4 C), a brine of sufficient concentration

must be used to prevent freeze-up at anticipated suction

temperatures. To ensure sufficient loop volume, see

Table 28.

LEGEND

AHRI — Air Conditioning, Heating, and Refrigeration Institute

—

Liters per kW

Gallons per ton

NOTES:

Gallons = V x AHRI capacity in tons.

Liters = N x AHRI capacity in kW.

APPLICATION

3.25

6.5 to 10.8

4. Check tightness of all electrical connections.

Normal Air Conditioning

Process Type Cooling

Low Ambient Operation

6 to 10

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All refrigerant charging should be done through the ¼-in.

Schraeder connection on the liquid line. Do NOT add refriger-

ant charge through the low-pressure side of the system. If com-

plete charging is required, weigh in the appropriate charge for

the circuit as shown on the unit nameplate. If partial charging is

required, operate circuit at full load and add charge until the

sight glass is clear of bubbles.

a30-4978

CAUTION

Never charge liquid into low-pressure side of system. Do

not overcharge. Overcharging results in higher discharge

pressure, possible compressor damage, and higher power

consumption. During charging or removal of refrigerant, be

sure water is continuously circulating through the cooler to

prevent freezing.

The 30MPA units (condenserless) are shipped with a nitro-

gen holding charge only. After chiller assembly is completed in

the field, system must be fully charged. While the unit is run-

ning at full capacity, add refrigerant until the sight glass is clear.

R-410A is the normal refrigerant.

OIL SIGHTGLASS

Fig. 20 — Sight Glass Location

Do not open the liquid valve until there is a charge in re-

mainder of system. A positive pressure indicates a charge in

system. With the unit operating at full load, check liquid line

sight glass to be sure the unit is fully charged (bubbles in the

sight glass indicate the unit is not fully charged).

START-UP AND OPERATION

CAUTION

Crankcase heaters on 30MPA units are wired into the con-

trol circuit, so they are always operable as long as the main

power supply disconnect is on (closed), even if any safety

device is open. Compressor heaters must be on for 24

hours prior to the start-up of any compressor. Equipment

damage could result if heaters are not energized for at least

24 hours prior to compressor start-up.

If there is no refrigerant vapor pressure in the system, the

entire system must be leak tested. After repairing leaks, evacu-

ate the system before recharging.

Follow approved evacuation procedures when removing

refrigeration. Release remaining pressure to an approved evac-

uated cylinder.

The liquid charging method is recommended for complete

charging or when additional charge is required.

Compressor crankcase heaters must be on for 24 hours be-

fore start-up. To energize the crankcase heaters, close the field

disconnect. Leave the compressor circuit breakers off/open.

The crankcase heaters are now energized.

CAUTION

NOTE: Refer to Start-Up Checklist on pages CL-1 to CL-8.

Be careful not to overcharge the system. Overcharging

results in higher discharge pressure, possible compressor

damage, and higher power consumption.

Actual Start-Up — Actual start-up should be done only

under supervision of a qualified refrigeration mechanic.

EVACUATION AND DEHYDRATION — Because the

30MP systems use polyolester (POE) oil, which can absorb

moisture, it is important to minimize the amount of time that

the system interior is left exposed to the atmosphere. Minimiz-

ing the exposure time of the oil to the atmosphere will mini-

mize the amount of moisture that needs to be removed during

evacuation.

Once all of the piping connections are complete, leak test

the unit and then pull a deep dehydration vacuum. Connect the

vacuum pump to the high flow Schraeder valve in the suction

line and liquid line. For best results, it is recommended that a

vacuum of at least 500 microns (0.5 mm Hg) be obtained. Af-

terwards, to ensure that no moisture is present in the system,

perform a standing vacuum-rise test.

With the unit in deep vacuum (500 microns or less), isolate

the vacuum pump from the system. Observe the rate-of-rise of

the vacuum in the system. If the vacuum rises by more than

50 microns in a 30-minute time period, then continue the dehy-

dration process. Maintain a vacuum on the system until the

standing vacuum requirement is met. This will ensure a dry

system.

By following these evacuation and dehydration procedures,

the amount of moisture present in the system will be mini-

mized. It is required that liquid line filter driers be installed

between the condenser(s) and the expansion devices to capture

any foreign debris and provide additional moisture removal

capacity.

1. Be sure all service valves are open (30MPA units only).

2. Using the scrolling marquee display, set leaving-fluid set

point (Set PointsCOOLCSP.1). No cooling range

adjustment is necessary.

3. Start chilled fluid pump (if not configured for cooler

pump control).

4. Turn ENABLE/OFF/REMOTE CONTACT switch to

ENABLE position.

5. Allow unit to operate and confirm that everything is func-

tioning properly. Check to see that leaving fluid tempera-

ture agrees with leaving set point (Set PointsCOOL

CSP.1) or (Set PointsCOOLCSP.2), or if reset is

used, with the control point (Run StatusVIEW

CTPT).

6. Check the cooler leaving chilled water temperature to see

that it remains well above 32 F (0° C), or the brine freez-

ing point if the unit is a medium temperature brine unit.

7. Recheck compressor oil level (see Oil Charge section).

Check Refrigerant Charge — All 30MPW units are

shipped with a complete operating charge of R-410A and

should be under sufficient pressure to conduct a leak test after

installation. If there is no system pressure, admit nitrogen until

a pressure is observed and then proceed to test for leaks. After

leaks are repaired, the system must be dehydrated.

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LIQUID CHARGING METHOD — Add charge to the unit

through the liquid line service valve. Never charge liquid into

the low-pressure side of the system.

medium temperature brine unit, the cooler LCWT can go

down to 15 F (–9.4 C).

Table 29 — Temperature Limits for

Standard 30MP Units

1. Close liquid line ball valve (30MPA only).

2. Connect a refrigerant cylinder loosely to the high flow

Schraeder valve connection on the liquid line. Purge the

charging hose and tighten the connections.

TEMPERATURE LIMIT

Maximum Condenser LWT

Minimum Condenser EWT

Maximum Cooler EWT*

Maximum Cooler LWT

140

3. Open the refrigerant cylinder valve.

4. If the system has been dehydrated and is under vacuum,

break the vacuum with refrigerant gas. For R-410A, build

up system pressure to 101 psig and 32 F (697 kPa and

0° C). Invert the refrigerant cylinder so that the liquid re-

frigerant will be charged.

5. a. For complete charge of 30MPW units, follow

charging by weight procedure. When charge is

nearly full, complete the process by observing the

sight glass for clear liquid flow while the unit is

operating. The use of sight glass charging is valid

only when unit is operating at full capacity.

Minimum Cooler LWT†

LEGEND

Entering Fluid (Water) Temperature

Leaving Fluid (Water) Temperature

EWT

LWT

—

*For sustained operation, EWT should not exceed 85 F (29.4 C).

†Unit requires modification below this temperature.

CAUTION

b. For complete charge of 30MPA units or where

refrigerant cylinder cannot be weighed, follow the

condenser manufacturer’s charging procedure or

follow charging by sight glass procedure. The use

of sight glass charging is valid only when unit is

operating at full capacity.

Medium temperature brine duty application (below 32 F

[0° C] LCWT) for chiller normally requires factory modifi-

cation. Contact your Carrier representative for applicable

LCWT range for standard water-cooled chiller in a specific

application.

6. a. The 30MPA condenserless units are shipped

with a nitrogen holding charge. After installation

with the field-supplied system high side, the com-

plete system should be evacuated and charged per

the condenser manufacturer’s charging procedure

or charged until the sight glass is clear (with the

unit running at full capacity). To achieve maxi-

mum system capacity, add additional charge equal

to the difference between the condenser optimal

charge and the condenser minimum charge, which

can be obtained from the charge data provided in

the condenser installation instructions.

VOLTAGE — ALL UNITS

Main Power Supply — Minimum and maximum acceptable

supply voltages are listed in the Installation Instructions.

Unbalanced 3-Phase Supply Voltage — Never operate a motor

where a phase imbalance between phases is greater than 2%.

To determine percent voltage imbalance:

a30-4979

max voltage deviation

from avg voltage

% Voltage Imbalance = 100 x

average voltage

The maximum voltage deviation is the largest difference

between a voltage measurement across 2 legs and the average

across all 3 legs.

Example: Supply voltage is 240-3-60.

AB = 243 v

b. To ensure maximum performance of 30MPW

units, raise the compressor saturated discharge

temperature (SDT) to approximately 100 F

(37.8 C) by throttling the condenser water intake.

Add charge until there is approximately 9 to 12° F

(5.0 to 6.6° C) of system subcooling (SDT minus

actual temperature entering the thermostatic

expansion valve).

BC = 236 v

AC = 238 v

1. Determine average voltage:

Operating Limitations

TEMPERATURES (See Table 29 for 30MP standard tem-

perature limits).

243 + 236 + 238

Averagevoltage =

717

CAUTION

= 239

Do not operate with cooler leaving chiller water (fluid)

temperature (LCWT) below 32 F (0° C) for standard units

with proper brine solution or 40 F (4.4 C) for the standard

units with fresh water, or below 15 F (–9.4 C) for units fac-

tory built for medium temperature brine.

2. Determine maximum deviation from average voltage:

(AB) 243 – 239 = 4 v

(BC) 239 – 236 = 3 v

(AC) 239 – 238 = 1 v

Maximum deviation is 4 v.

3. Determine percent voltage imbalance:

High Cooler Leaving Chilled Water (Fluid) Temperatures

(LCWT) — During start-up with cooler the LCWT should not

be above approximately 60 F (16 C).

Low Cooler LCWT — For standard units with fresh water,

the LCWT must be no lower than 40 F (4.4 C). For standard

units with a proper brine solution, the LCWT must be no lower

than 32 F (0° C). If the unit is the factory-installed optional

% Voltage Imbalance = 100 x

239

= 1.7%

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This voltage imbalance is satisfactory as it is below the

maximum allowable of 2%.

mounting hardware. Using new tubing as required, reconnect

compressor suction and discharge lines. Using hardware saved,

reinstall the mounting bolts and washers through the compres-

sor feet. Using proper techniques, braze suction and discharge

lines and check for leaks. Reconnect oil equalization line.

Re-install the crankcase heater (30MPA units). Reconnect

the compressor power connections and high-pressure switch

wiring as on the old compressor. Refer to Fig. 21. Following

the installation of the new compressor, tighten all hardware to

the following specifications. (See Table 30.)

IMPORTANT: If the supply voltage phase imbalance is

more than 2%, contact your local electric utility company

immediately. Do not operate unit until imbalance condition

is corrected.

Control Circuit Power — Power for the control circuit is

supplied from the main incoming power through a factory-

installed control power transformer (TRAN1) for all models.

Field wiring connections are made to the LVT.

Table 30 — Unit Torque Specification

FASTENER

RECOMMENDED TORQUE

OPERATION SEQUENCE

Compressor Mounting

Bolts

7 to 10 ft-lb (9.5 to 13.5 N-m)

The unit is started by putting the ENABLE/OFF/REMOTE

CONTACT switch in the ENABLE or REMOTE CONTACT

position. When the unit receives a call for cooling (either from

the internal control or CCN network command or remote con-

tact closure), the unit stages up in capacity to maintain the leav-

ing fluid set point. The first compressor starts 1¹/₂to 3 minutes

after the call for cooling.

For all units, if temperature reset is being used, the unit con-

trols to a higher leaving-fluid temperature as the building load

reduces. If demand limit is used, the unit may temporarily be

unable to maintain the desired leaving-fluid temperature be-

cause of imposed power limitations.

Compressor Power

Connections

Compressor Ground

Terminal Connections

24 to 28 in.-lb (2.7- to 3.2 N-m)

14 to 18 in.-lb (1.6 to 2.0 N-m)

30MPW Condenser and 30MP Cooler

BRAZED-PLATE COOLER AND CONDENSER HEAT

EXCHANGER REPLACEMENT — Brazed-plate heat ex-

changers cannot be repaired if they develop a leak. If a leak

(refrigerant or water) develops, the heat exchanger must be

replaced. To replace a brazed plate heat exchanger:

1. Disconnect the liquid-in and liquid-out connections at the

heat exchanger.

2. Check that the replacement heat exchanger is the same as

the original heat exchanger. For the condensers, compare

part numbers on the heat exchangers. For the coolers, in-

sulation covers the manufacturer’s part number. Make

sure the depths of the replacement and original cooler

heat exchangers are the same.

3. Recover the refrigerant from the system, and unsolder the

refrigerant-in and refrigerant-out connections.

4. Remove the four nuts holding the heat exchanger to the

brackets. Save the nuts.

5. Install the replacement heat exchanger in the unit and at-

tach to the bracket using the four nuts removed in Step 4.

For sizes 015 and 020, torque is 7-10 ft-lb. For sizes 030-

045, torque is 35 to 50 ft-lb.

SERVICE

WARNING

Electrical shock can cause personal injury and death. Shut

off all power to this equipment during service. There may

be more than one disconnect switch. Tag all disconnect

locations to alert others not to restore power until work is

completed.

Electronic Components

CONTROL COMPONENTS — Unit uses an advanced elec-

tronic control system that normally does not require service.

For details on controls refer to Operating Data section.

Access to the controls is through a hinged panel. Inner pan-

els are secured in place and should not be removed unless all

power to the chiller is off.

6. Carefully braze the refrigerant lines to the connections on

the heat exchanger. Lines should be soldered using silver

as the soldering material with a minimum of 45% silver.

Keep the temperature below 1472 F (800 C) under nor-

mal soldering conditions (no vacuum) to prevent the cop-

per solder of the brazed plate heat exchanger from chang-

ing its structure. Failure to do so can result in internal

or external leakage at the connections which cannot be

repaired.

Compressor Replacement — All models contain

scroll compressors and have two or three compressors. A com-

pressor is most easily removed from the side of the unit or

above, depending on where clearance space was allowed dur-

ing unit installation. See Fig. 21.

Remove the junction box cover bolts and disconnect the

compressor power and crankcase heater connections (30MPA

only). Remove the cable from the compressor junction box.

Remove the connections from the high-pressure switch. Re-

move the crankcase heater. Knock the same holes out of the

new compressor junction box and install the cable connectors

from the old compressor.

7. For coolers, ensure that the original size tubing is used

(¹/₂-in. for sizes 015 and 020 and ⁵/₈-in. for sizes 030-045)

between the TXV and the cooler. The TXV must be lo-

cated within 1 ft of the heat exchanger, with no bends be-

tween the TXV outlet and the cooler inlet.

8. Reconnect the water/brine lines.

9. Dehydrate and recharge the unit. Check for leaks.

The compressors are bolted to rails, which are in turn bolted

to the unit basepan for all sizes. Remove the 4 bolts holding the

compressor to the rail on the basepan. Save the mounting hard-

ware for use with the new compressor. Carefully cut the com-

pressor suction and discharge lines with a tubing cutter as close

to the compressor as feasible. Remove high-pressure switch

and pressure transducer(s) if required for compressor removal.

Lift one corner of the compressor at a time and remove all the

steel spacers. Remove the old compressor from the unit.

BRAZED-PLATE COOLER AND CONDENSER HEAT

EXCHANGER CLEANING — Brazed-plate heat exchang-

ers must be cleaned chemically. A professional cleaning ser-

vice skilled in chemical cleaning should be used. Use a weak

acid (5% phosphoric acid, or if the heat exchanger is cleaned

frequently, 5% oxalic acid). Pump the cleaning solution

through the exchanger, preferably in a backflush mode. After

cleaning, rinse with large amounts of fresh water to dispose of

all the acid. Cleaning materials must be disposed of properly.

Slide the new compressor in place on the rails. Lifting one

side of the compressor at a time, replace all of the compressor

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The strainers in front of the water/brine inlets of the heat

exchangers should be cleaned periodically, depending on con-

dition of the chiller water/brine.

Do not reuse oil that has been drained out, or oil that has

been exposed to atmosphere.

Check Refrigerant Feed Components

Oil Charge

CAUTION

FILTER DRIER — The function of the filter drier is to main-

tain a clean, dry system. The moisture indicator (described

below) indicates any need to change the filter drier. The filter

drier is a sealed-type drier. When the drier needs to be

changed, the entire filter drier must be replaced.

MOISTURE-LIQUID INDICATOR —The indicator is located

immediately ahead of the TXV to provide an indication of the

refrigerant moisture content. It also provides a sight glass for

refrigerant liquid. Clear flow of liquid refrigerant (at full unit

loading) indicates sufficient charge in the system. Bubbles in the

sight glass (at full unit loading) indicate an undercharged system

or the presence of noncondensables. Moisture in the system,

measured in parts per million (ppm), changes the color of the

indicator as follows:

The compressor in a Puron^®refigerant (R-410A) system

uses a polyol ester (POE) oil. This is extremely hygro-

scopic, meaning it absorbs water readily. POE oils can

absorb 15 times as much water as other oils designed for

HCFC and CFC refrigerants. Take all necessary precau-

tions to avoid exposure of the oil to the atmosphere. Failure

to do so could result in possible equipment damage.

Puron refrigerant systems use a polyol ester (POE) oil. Use

only Carrier approved compressor oil. Oil should be visible in

compressor oil sight glass. An acceptable oil level is from ¹/₈to

³/₈of sight glass. All compressors must be off when checking

oil level. Recommended oil level adjustment method is as

follows:

Green (safe) —Moisture is below 75 ppm

Yellow-Green (caution) — 75 to 150 ppm

Yellow (wet) — above 150 ppm

The unit must be in operation at least 12 hours before the

moisture indicator gives an accurate reading, and must be in

contact with liquid refrigerant. At the first sign of moisture in

the system, change the corresponding filter drier.

THERMOSTATIC EXPANSION VALVE (TXV) — The

TXV controls the flow of liquid refrigerant to the cooler by

maintaining constant superheat of vapor leaving the cooler.

The valve(s) is activated by a temperature-sensing bulb(s)

strapped to the suction line(s).

ADD OIL — Recover charge from the unit. Add oil to suction

line Schrader valve on tandem compressors sets and the com-

pressor Schrader on the trios. (See Fig. 21.) When oil can be

seen at the bottom of the sight glass, add oil in 5 oz increments

which is approximately ¹/₈in oil level. Run all compressors for

20 minutes then shut off to check oil level. Repeat procedure

until acceptable oil level is present.

NOTE: Use only Carrier approved compressor oil. Approved

sources are:

The valve(s) is factory-set to maintain between 8° and 10° F

(4.4° and 5.6° C) of superheat leaving the cooler. Check the

superheat during operation after conditions have stabilized. If

necessary, adjust the superheat to prevent refrigerant floodback

to the compressor.

Totaline . . . . . . . . . . . . . . . . . . . . . . 3MAF POE, P903-1601

Mobil. . . . . . . . . . . . . . . . . . . . . . . . . . .EAL Arctic 32-3MA

Uniqema . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RL32-3MAF

HPS

DPT

LEGEND

RGT

CWFS — Chilled Water Flow Switch

DPT

EWT

HPS

LWT

RGT

SPT

— Discharge Pressure Transducer

— Entering Water Thermistor

— High Pressure Switch

SPT

— Leaving Water Thermistor

— Return Gas Thermistor (Optional)

— Suction Pressure Transducer

EWT

(HIDDEN)

CWFS

LWT

a30-5049

Fig. 21 — Compressor Location — 30MP015-045 Units (30MPW045 Unit Shown)

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MINIMUM LOAD VALVE — On units equipped with the

factory-installed hot gas bypass option, a solenoid valve and

discharge bypass valve (minimum load valve) are located

between the discharge line and the cooler entering-refrigerant

line. The MBB cycles the solenoid to perform minimum load

valve function and the discharge bypass valve modulates to the

suction pressure set point of the valve. The bypass valve has an

adjustable opening setting between 95 to 115 psig (655 to

793 kPa). The factory setting is 105 psig (724 kPa).

The amount of capacity reduction achieved by the mini-

mum load valve is not adjustable. The total unit capacity with

the minimum load valve is shown in Table 19.

PRESSURE RELIEF DEVICES — All units have one pres-

sure relief device per circuit located in the liquid line which re-

lieves at 210 F (100 C).

COOLER FREEZE-UP PROTECTION

WARNING

On medium temperature brine units, the anti-freeze solu-

tion must be properly mixed to prevent freezing at a tem-

perature of at least 15 F (8.3 C) below the leaving-fluid

temperature set point. Failure to provide the proper anti-

freeze solution mixture is considered abuse and may impair

or otherwise negatively impact the Carrier warranty.

The main base board (MBB) monitors cooler leaving fluid

temperature at all times. The MBB will rapidly remove stages

of capacity as necessary to prevent freezing conditions due to

the rapid loss of load or low cooler fluid flow.

When the cooler is exposed to lower temperatures (40 F

[4.4 C] or below), freeze-up protection is required using inhib-

ited ethylene or propylene glycol.

The 30MPW unit does not have a condenser pressure relief

valve, because the brazed-plate condenser is not considered a

pressure vessel, as defined in ANSI/ASHRAE 15 (American

National Standards Institute/American Society of Heating,

Refrigerating, and Air Conditioning Engineers) safety code

requirements.

For 30MPA condenserless units, pressure relief devices de-

signed to relieve at the pressure determined in local codes,

must be field-supplied and installed in the discharge line piping

in accordance with ANSI/ASHRAE 15 safety code require-

ments. Additional pressure relief valves, properly selected,

must be field-supplied and installed to protect high side equip-

ment and may be required by applicable codes.

Thermistors — Electronic control uses up to five 5 k

thermistors to sense temperatures used to control operation of

the chiller. Thermistors EWT, LWT, RGTA, CNDE, CNDL,

and OAT are identical in their temperature and voltage drop

performance. The SPT space temperature thermistor has a

10 k input channel and it has a different set of temperature vs.

resistance and voltage drop performance. Resistance at various

temperatures are listed in Tables 32-35. For dual chiller opera-

tion, a dual chiller sensor is required which is a 5 k

thermistor.

Most codes require that a relief valve be vented directly to

the outdoors. The vent line must not be smaller than the relief

valve outlet. Consult ANSI/ASHRAE 15 for detailed informa-

tion concerning layout and sizing of relief vent lines.

REPLACING THERMISTORS (EWT, LWT, RGT, CNDE,

CNDL) — Add a small amount of thermal conductive grease

to the thermistor well and end of probe. For all probes, tighten

the retaining nut ¼ turn past finger tight. See Fig. 22.

THERMISTOR/TEMPERATURE SENSOR CHECK — A

high quality digital volt-ohmmeter is required to perform this

check.

1. Connect the digital voltmeter across the appropriate the-

mistor terminals at the J8 terminal strip on the main base

board (see Fig. 23).

Check Unit Safeties

HIGH-PRESSURE SWITCH — A high-pressure switch is

provided to protect each compressor and refrigeration system

from unsafe high pressure conditions. See Table 31 for high-

pressure switch settings.

The high-pressure switch is mounted in the discharge line of

each circuit. If an unsafe, high-pressure condition should exist,

the switch opens and shuts off the affected circuit. The CSB

(current sensing board) senses the compressor feedback signal

and generates an appropriate alarm. The MBB prevents the cir-

cuit from restarting until the alert condition is reset. The switch

should open at the pressure corresponding to the appropriate

switch setting as shown in Table 31.

2. Using the voltage reading obtained, read the sensor tem-

perature from Tables 32-35.

3. To check thermistor accuracy, measure temperature at

probe location with an accurate thermocouple-type tem-

perature measuring instrument. Insulate thermocouple to

avoid ambient temperatures from influencing reading.

Temperature measured by thermocouple and temperature

determined from thermistor voltage reading should be

close, ± 5° F (3° C) if care was taken in applying thermo-

couple and taking readings.

Table 31 — Factory Settings, High-Pressure

Switch (Fixed)

CUTOUT

CUT-IN

If a more accurate check is required, unit must be shut down

and thermistor removed and checked at a known temperature

(freezing point or boiling point of water) using either voltage

drop measured across thermistor at the J8 terminal, by deter-

mining the resistance with chiller shut down and thermistor

disconnected from J8. Compare the values determined with the

value read by the control in the Temperatures mode using the

scrolling marquee display.

UNIT

Psig

650

kPa

4482

Psig

500

kPa

3447

30MP015-045

Clear the alarm using the scrolling marquee display. The

unit should restart after the compressor anti-short-cycle delay,

built into the unit control module, expires.

PRESSURE TRANSDUCERS — Each unit is equipped with

a suction and discharge pressure transducer. These inputs to the

MBB are not only used to monitor the status of the unit, but to

also maintain operation of the chiller within the compressor

manufacturer's specified limits. The input to the MBB from the

suction pressure transducer is also used to protect the compres-

sor from operating at low pressure conditions. If suction return

gas thermistors are installed, then additional low superheat

conditions are detected. In some cases, the unit may not be able

to run at full capacity. The control module will automatically

reduce the capacity of a circuit as needed to maintain specified

maximum/minimum operating pressures.

Pressure Transducers — The suction and discharge

transducers are different part numbers and can be distinguished

by the color of the transducer body, suction (yellow) and dis-

charge (red). No pressure transducer calibration is required.

The transducers operate on a 5 vdc supply, which is generated

by the main base board (MBB). See Fig. 23 for transducer con-

nections to the J8 connector on the MBB.

TROUBLESHOOTING — If a transducer is suspected of be-

ing faulty, first check supply voltage to the transducer. Supply

voltage should be 5 vdc ± 0.2 v. If supply voltage is correct,

compare pressure reading displayed on the scrolling marquee

display module against pressure shown on a calibrated pressure

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gauge. Pressure readings should be within ± 15 psig. If the

two readings are not reasonably close, replace the pressure

transducer.

4. Wrong pump motor rotation. Pump must rotate clockwise

when viewed from motor end of pump.

CONDENSER EWT

ACCESSORY

Chilled Water Flow Switch — A factory-installed

flow switch is installed in the leaving fluid piping for all units.

This is a thermal-dispersion flow switch with no field adjust-

ments. The switch is set for approximately 0.5 ft/sec of flow.

The sensor tip houses two thermistors and a heater element.

One thermistor is located in the sensor tip, closest to the flow-

ing fluid. See Fig. 24. This thermistor is used to detect changes

in the flow velocity of the liquid. The second thermistor is

bonded to the cylindrical wall and is affected only by changes

in the temperature of the liquid. The thermistors are positioned

to be in close contact with the wall of the sensor probe and, at

the same time, to be kept separated from each other within the

confines of the probe.

In order to sense flow, it is necessary to heat one of the

thermistors in the probe. When power is applied, the tip of the

probe is heated. As the fluid starts to flow, heat will be carried

away from the sensor tip. Cooling of the first thermistor is a

function of how fast heat is conducted away by the flowing

liquid.

CONDENSER LWT

ACCESSORY

T-55

ACCSY

LVT

T55

SEN

J12

BLU

VIO

RED

OAT ACCESSORY OR

DUAL CHILLER LWT

RGTA

ACCESSORY

BASE

BOARD

COOLER ENTERING

FLUID TEMP

RED

BLK

RED

COOLER LEAVING

FLUID TEMP

BLK

The difference in temperature between the two thermistors

provides a measurement of fluid velocity past the sensor probe.

When fluid velocity is high, more heat will be carried away

from the heated thermistor and the temperature differential will

be small. As fluid velocity decreases, less heat will be taken

from the heated thermistor and there will be an increase in tem-

perature differential.

RED

DPTA

GRN

BLK

RED

SPTA

GRN

BLK

a30-5043

When unit flow rate is above the minimum flow rate, then

the output is switched on, sending 24 vac to the MBB to prove

flow has been established.

For recommended maintenance, check the sensor tip for

build-up every 6 months. Clean the tip with a soft cloth. If

necessary, build-up (e.g., lime) can be removed with a common

vinegar cleansing agent.

The flow sensor cable is provided with (3) LEDs that indi-

cate if 24 vac power is present and also status of the switch

contacts. The LEDs are as follows:

LEGEND

ACCSY — Accessory

DPT

EWT

LWT

LVT

OAT

RGT

SEN

SPT

— Discharge Pressure Transducer

— Entering Water Temperature

— Leaving Water Temperature Sensor

— Low Voltage Terminal

— Outdoor Air Temperature Sensor

— Return Gas Temperature Sensor

— Sensor Terminal Block

— Space Temperature Sensor

Fig. 23 — Thermistor Connections to

Main Base Board, J8 Connector

• Green LED ON – 24 vac present

• One Yellow LED ON – Flow sensor switch OPEN

• Two Yellow LED ON – Flow sensor switch CLOSED

If nuisance trips of the sensor are occurring, follow the

steps below to correct the situation:

1. Check to confirm that the field-installed strainer is clean.

Use the blow-down valve provided or remove the screen

and clean it. For the case of VFD controlled pumps, en-

sure that the minimum speed setting has not been

changed.

2. Measure the pressure drop across the cooler and compare

this to the system requirements.

3. Verify that cable connections at the switch and at the ter-

minal block are secure.

a30-499

NOTE: Dimensions are in millimeters.

Fig. 24— Chilled Water Flow Switch

5/8 in. HEX

1/4-18 NPT

6" MINIMUM

CLEARANCE FOR

THERMISTOR

REMOVAL

Fig. 22 — Thermistor Well

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Table 32 — 5K Thermistor Temperatures (°F) vs. Resistance/Voltage Drop

(Voltage Drop for EWT, LWT, RGT, CNDE, CNDL, Dual Chiller, and OAT)

VOLTAGE

DROP

(V)

VOLTAGE

DROP

(V)

VOLTAGE

DROP

(V)

TEMP

(F)

RESISTANCE

(Ohms)

TEMP

(F)

RESISTANCE

(Ohms)

TEMP

(F)

RESISTANCE

(Ohms)

1.982

1.956

1.930

1.905

1.879

1.854

1.829

1.804

1.779

1.754

1.729

1.705

1.681

1.656

1.632

1.609

1.585

1.562

1.538

1.516

1.493

1.470

1.448

1.426

1.404

1.382

1.361

1.340

1.319

1.298

1.278

1.257

1.237

1.217

1.198

1.179

1.160

1.141

1.122

1.104

1.086

1.068

1.051

1.033

1.016

0.999

0.983

0.966

0.950

0.934

0.918

0.903

0.888

0.873

0.858

0.843

0.829

0.815

0.801

0.787

0.774

0.761

0.748

0.735

0.723

0.710

0.698

0.686

0.674

0.663

0.651

0.640

0.629

0.618

0.608

0.597

0.587

0.577

0.567

0.557

0.548

0.538

0.529

0.520

7,686

7,665

7,468

7,277

7,091

6,911

6,735

6,564

6,399

6,238

6,081

5,929

5,781

5,637

5,497

5,361

5,229

5,101

4,976

4,855

4,737

4,622

4,511

4,403

4,298

4,196

4,096

4,000

3,906

3,814

3,726

3,640

3,556

3,474

3,395

3,318

3,243

3,170

3,099

3,031

2,964

2,898

2,835

2,773

2,713

2,655

2,597

2,542

2,488

2,436

2,385

2,335

2,286

2,239

2,192

2,147

2,103

2,060

2,018

1,977

1,937

1,898

1,860

1,822

1,786

1,750

1,715

1,680

1,647

1,614

1,582

1,550

1,519

1,489

1,459

1,430

1,401

1,373

1,345

1,318

1,291

1,265

1,240

1,214

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

0.511

0.502

0.494

0.485

0.477

0.469

0.461

0.453

0.445

0.438

0.430

0.423

0.416

0.408

0.402

0.395

0.388

0.381

0.375

0.369

0.362

0.356

0.350

0.344

0.339

0.333

0.327

0.322

0.317

0.311

0.306

0.301

0.296

0.291

0.286

0.282

0.277

0.272

0.268

0.264

0.259

0.255

0.251

0.247

0.243

0.239

0.235

0.231

0.228

0.224

0.220

0.217

0.213

0.210

0.206

0.203

0.200

0.197

0.194

0.191

0.188

0.185

0.182

0.179

0.176

0.173

0.171

0.168

0.165

0.163

0.160

0.158

0.155

0.153

0.151

0.148

0.146

0.144

0.142

0.140

0.138

0.135

0.133

1,190

1,165

1,141

1,118

1,095

1,072

1,050

1,029

1,007

986

965

945

925

906

887

868

850

832

815

798

782

765

750

734

719

705

690

677

663

650

638

626

614

602

591

581

570

561

551

542

533

524

516

508

501

494

487

480

473

467

461

456

450

445

439

434

429

424

419

415

410

405

401

396

391

386

382

377

372

367

361

356

350

344

338

332

325

318

311

304

297

289

282

–25

–24

–23

–22

–21

–20

–19

–18

–17

–16

–15

–14

–13

–12

–11

–10

–9

–8

–7

–6

–5

–4

–3

–2

–1

3.699

3.689

3.679

3.668

3.658

3.647

3.636

3.624

3.613

3.601

3.588

3.576

3.563

3.550

3.536

3.523

3.509

3.494

3.480

3.465

3.450

3.434

3.418

3.402

3.386

3.369

3.352

3.335

3.317

3.299

3.281

3.262

3.243

3.224

3.205

3.185

3.165

3.145

3.124

3.103

3.082

3.060

3.038

3.016

2.994

2.972

2.949

2.926

2.903

2.879

2.856

2.832

2.808

2.784

2.759

2.735

2.710

2.685

2.660

2.634

2.609

2.583

2.558

2.532

2.506

2.480

2.454

2.428

2.402

2.376

2.349

2.323

2.296

2.270

2.244

2.217

2.191

2.165

2.138

2.112

2.086

2.060

2.034

2.008

98,010

94,707

91,522

88,449

85,486

82,627

79,871

77,212

74,648

72,175

69,790

67,490

65,272

63,133

61,070

59,081

57,162

55,311

53,526

51,804

50,143

48,541

46,996

45,505

44,066

42,679

41,339

40,047

38,800

37,596

36,435

35,313

34,231

33,185

32,176

31,202

30,260

29,351

28,473

27,624

26,804

26,011

25,245

24,505

23,789

23,096

22,427

21,779

21,153

20,547

19,960

19,393

18,843

18,311

17,796

17,297

16,814

16,346

15,892

15,453

15,027

14,614

14,214

13,826

13,449

13,084

12,730

12,387

12,053

11,730

11,416

11,112

10,816

10,529

10,250

9,979

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

9,717

9,461

9,213

8,973

8,739

8,511

8,291

8,076

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Table 33 — 5K Thermistor Temperatures (°C) vs. Resistance/Voltage Drop

(Voltage Drop for EWT, LWT, RGT, CNDE, CNDL, Dual Chiller, and OAT)

VOLTAGE

DROP

(V)

VOLTAGE

DROP

(V)

VOLTAGE

DROP

(V)

TEMP

(C)

RESISTANCE

(Ohms)

TEMP

(C)

RESISTANCE

(Ohms)

TEMP

(C)

RESISTANCE

(Ohms)

1.982

1.935

1.889

1.844

1.799

1.754

1.710

1.666

1.623

1.580

1.538

1.497

1.457

1.417

1.378

1.340

1.302

1.265

1.229

1.194

1.160

1.126

1.093

1.061

1.030

0.999

0.969

0.940

0.912

0.885

0.858

0.832

0.807

0.782

0.758

0.735

0.713

0.691

0.669

0.649

0.629

0.610

0.591

0.573

0.555

0.538

0.522

7,855

7,499

7,161

6,840

6,536

6,246

5,971

5,710

5,461

5,225

5,000

4,786

4,583

4,389

4,204

4,028

3,861

3,701

3,549

3,404

3,266

3,134

3,008

2,888

2,773

2,663

2,559

2,459

2,363

2,272

2,184

2,101

2,021

1,944

1,871

1,801

1,734

1,670

1,609

1,550

1,493

1,439

1,387

1,337

1,290

1,244

1,200

100

101

102

103

104

105

106

107

0.506

0.490

0.475

0.461

0.447

0.433

0.420

0.407

0.395

0.383

0.371

0.360

0.349

0.339

0.329

0.319

0.309

0.300

0.291

0.283

0.274

0.266

0.258

0.251

0.244

0.237

0.230

0.223

0.217

0.211

0.204

0.199

0.193

0.188

0.182

0.177

0.172

0.168

0.163

0.158

0.154

0.150

0.146

0.142

0.138

0.134

1,158

1,118

1,079

1,041

1,006

971

938

906

876

836

805

775

747

719

693

669

645

623

602

583

564

547

531

516

502

489

477

466

456

446

436

427

419

410

402

393

385

376

367

357

346

335

324

312

299

285

–32

3.705

3.687

3.668

3.649

3.629

3.608

3.586

3.563

3.539

3.514

3.489

3.462

3.434

3.406

3.376

3.345

3.313

3.281

3.247

3.212

3.177

3.140

3.103

3.065

3.025

2.985

2.945

2.903

2.860

2.817

2.774

2.730

2.685

2.639

2.593

2.547

2.500

2.454

2.407

2.360

2.312

2.265

2.217

2.170

2.123

2.076

2.029

100,260

94,165

88,480

83,170

78,125

73,580

69,250

65,205

61,420

57,875

54,555

51,450

48,536

45,807

43,247

40,845

38,592

38,476

34,489

32,621

30,866

29,216

27,633

26,202

24,827

23,532

22,313

21,163

20,079

19,058

18,094

17,184

16,325

15,515

14,749

14,026

13,342

12,696

12,085

11,506

10,959

10,441

9,949

–31

–30

–29

–28

–27

–26

–25

–24

–23

–22

–21

–20

–19

–18

–17

–16

–15

–14

–13

–12

–11

–10

–9

–8

–7

–6

–5

–4

–3

–2

–1

9,485

9,044

8,627

8,231

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Table 34 — 10K Thermistor Temperature (°F) vs. Resistance/Voltage Drop

(For SPT)

VOLTAGE

DROP

(V)

VOLTAGE

DROP

(V)

VOLTAGE

DROP

(V)

TEMP

(F)

RESISTANCE

(Ohms)

TEMP

(F)

RESISTANCE

(Ohms)

TEMP

(F)

RESISTANCE

(Ohms)

–25

–24

–23

–22

–21

–20

–19

–18

–17

–16

–15

–14

–13

–12

–11

–10

–9

–8

–7

–6

–5

–4

–3

–2

–1

4.758

4.750

4.741

4.733

4.724

4.715

4.705

4.696

4.686

4.676

4.665

4.655

4.644

4.633

4.621

4.609

4.597

4.585

4.572

4.560

4.546

4.533

4.519

4.505

4.490

4.476

4.461

4.445

4.429

4.413

4.397

4.380

4.363

4.346

4.328

4.310

4.292

4.273

4.254

4.235

4.215

4.195

4.174

4.153

4.132

4.111

4.089

4.067

4.044

4.021

3.998

3.975

3.951

3.927

3.903

3.878

3.853

3.828

3.802

3.776

3.750

3.723

3.697

3.670

3.654

3.615

3.587

3.559

3.531

3.503

3.474

3.445

3.416

3.387

3.357

3.328

3.298

3.268

3.238

3.208

3.178

3.147

3.117

3.086

3.056

3.025

196,453

189,692

183,300

177,000

171,079

165,238

159,717

154,344

149,194

144,250

139,443

134,891

130,402

126,183

122,018

118,076

114,236

110,549

107,006

103,558

100,287

97,060

94,020

91,019

88,171

85,396

82,729

80,162

77,662

75,286

72,940

70,727

68,542

66,465

64,439

62,491

60,612

58,781

57,039

55,319

53,693

52,086

50,557

49,065

47,627

46,240

44,888

43,598

42,324

41,118

39,926

38,790

37,681

36,610

35,577

34,569

33,606

32,654

31,752

30,860

30,009

29,177

28,373

27,597

26,838

26,113

25,396

24,715

24,042

23,399

22,770

22,161

21,573

20,998

20,447

19,903

19,386

18,874

18,384

17,904

17,441

16,991

16,552

16,131

15,714

15,317

2.994

2.963

2.932

2.901

2.870

2.839

2.808

2.777

2.746

2.715

2.684

2.653

2.622

2.592

2.561

2.530

2.500

2.470

2.439

2.409

2.379

2.349

2.319

2.290

2.260

2.231

2.202

2.173

2.144

2.115

2.087

2.059

2.030

2.003

1.975

1.948

1.921

1.894

1.867

1.841

1.815

1.789

1.763

1.738

1.713

1.688

1.663

1.639

1.615

1.591

1.567

1.544

1.521

1.498

1.475

1.453

1.431

1.409

1.387

1.366

1.345

1.324

1.304

1.284

1.264

1.244

1.225

1.206

1.187

1.168

1.150

1.132

1.114

1.096

1.079

1.062

1.045

1.028

1.012

0.996

0.980

0.965

0.949

0.934

0.919

0.905

14,925

14,549

14,180

13,824

13,478

13,139

12,814

12,493

12,187

11,884

11,593

11,308

11,031

10,764

10,501

10,249

10,000

9,762

9,526

9,300

9,078

8,862

8,653

8,448

8,251

8,056

7,869

7,685

7,507

7,333

7,165

6,999

6,838

6,683

6,530

6,383

6,238

6,098

5,961

5,827

5,698

5,571

5,449

5,327

5,210

5,095

4,984

4,876

4,769

4,666

4,564

4,467

4,370

4,277

4,185

4,096

4,008

3,923

3,840

3,759

3,681

3,603

3,529

3,455

3,383

3,313

3,244

3,178

3,112

3,049

2,986

2,926

2,866

2,809

2,752

2,697

2,643

2,590

2,539

2,488

2,439

2,391

2,343

2,297

2,253

2,209

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

0.890

0.876

0.862

0.848

0.835

0.821

0.808

0.795

0.782

0.770

0.758

0.745

0.733

0.722

0.710

0.699

0.687

0.676

0.666

0.655

0.645

0.634

0.624

0.614

0.604

0.595

0.585

0.576

0.567

0.558

0.549

0.540

0.532

0.523

0.515

0.507

0.499

0.491

0.483

0.476

0.468

0.461

0.454

0.447

0.440

0.433

0.426

0.419

0.413

0.407

0.400

0.394

0.388

0.382

0.376

0.370

0.365

0.359

0.354

0.349

0.343

0.338

0.333

0.328

0.323

0.318

0.314

0.309

0.305

0.300

0.296

0.292

0.288

0.284

0.279

0.275

0.272

0.268

0.264

2,166

2,124

2,083

2,043

2,003

1,966

1,928

1,891

1,855

1,820

1,786

1,752

1,719

1,687

1,656

1,625

1,594

1,565

1,536

1,508

1,480

1,453

1,426

1,400

1,375

1,350

1,326

1,302

1,278

1,255

1,233

1,211

1,190

1,169

1,148

1,128

1,108

1,089

1,070

1,052

1,033

1,016

998

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

981

964

947

931

915

900

885

870

855

841

827

814

800

787

774

762

749

737

725

714

702

691

680

670

659

649

639

629

620

610

601

592

583

574

566

557

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Table 35 — 10K Thermistor Temperature (°C) vs. Resistance/Voltage Drop

(For SPT)

VOLTAGE

DROP

(V)

VOLTAGE

DROP

(V)

VOLTAGE

DROP

(V)

TEMP

(C)

RESISTANCE

(Ohms)

TEMP

(C)

RESISTANCE

(Ohms)

TEMP

(C)

RESISTANCE

(Ohms)

–32

–31

–30

–29

–28

–27

–26

–25

–24

–23

–22

–21

–20

–19

–18

–17

–16

–15

–14

–13

–12

–11

–10

–9

4.762

4.748

4.733

4.716

4.700

4.682

4.663

4.644

4.624

4.602

4.580

4.557

4.533

4.508

4.482

4.455

4.426

4.397

4.367

4.335

4.303

4.269

4.235

4.199

4.162

4.124

4.085

4.044

4.003

3.961

3.917

3.873

3.828

3.781

3.734

3.686

3.637

3.587

3.537

3.485

3.433

3.381

3.328

3.274

3.220

3.165

3.111

200,510

188,340

177,000

166,342

156,404

147,134

138,482

130,402

122,807

115,710

109,075

102,868

97,060

91,588

86,463

81,662

77,162

72,940

68,957

65,219

61,711

58,415

55,319

52,392

49,640

47,052

44,617

42,324

40,153

38,109

36,182

34,367

32,654

31,030

29,498

28,052

26,686

25,396

24,171

23,013

21,918

20,883

19,903

18,972

18,090

17,255

16,464

3.056

3.000

2.944

2.889

2.833

2.777

2.721

2.666

2.610

2.555

2.500

2.445

2.391

2.337

2.284

2.231

2.178

2.127

2.075

2.025

1.975

1.926

1.878

1.830

1.784

1.738

1.692

1.648

1.605

1.562

1.521

1.480

1.439

1.400

1.362

1.324

1.288

1.252

1.217

1.183

1.150

1.117

1.086

1.055

1.025

0.996

0.968

15,714

15,000

14,323

13,681

13,071

12,493

11,942

11,418

10,921

10,449

10,000

9,571

9,164

8,776

8,407

8,056

7,720

7,401

7,096

6,806

6,530

6,266

6,014

5,774

5,546

5,327

5,117

4,918

4,727

4,544

4,370

4,203

4,042

3,889

3,743

3,603

3,469

3,340

3,217

3,099

2,986

2,878

2,774

2,675

2,579

2,488

2,400

100

101

102

103

104

105

106

107

0.940

0.913

0.887

0.862

0.837

0.813

0.790

0.767

0.745

0.724

0.703

0.683

0.663

0.645

0.626

0.608

0.591

0.574

0.558

0.542

0.527

0.512

0.497

0.483

0.470

0.457

0.444

0.431

0.419

0.408

0.396

0.386

0.375

0.365

0.355

0.345

0.336

0.327

0.318

0.310

0.302

0.294

0.287

0.279

0.272

0.265

2,315

2,235

2,157

2,083

2,011

1,943

1,876

1,813

1,752

1,693

1,637

1,582

1,530

1,480

1,431

1,385

1,340

1,297

1,255

1,215

1,177

1,140

1,104

1,070

1,037

1,005

974

–8

–7

–6

–5

944

–4

915

–3

889

–2

861

–1

836

811

787

764

742

721

700

680

661

643

626

609

592

576

561

Strainer — Periodic cleaning of the required field-installed

strainer is required. Pressure drop across strainer in excess of

3 psi (21 kPa) indicates the need for cleaning. Normal (clean)

pressure drop is approximately 1 psi (6.9 kPa). Open the

blowdown valve to clean the strainer. If required, shut the chill-

er down and remove the strainer screen to clean. When strainer

has been cleaned, enter ‘YES’ for Strainer Maintenance Done

(Run StatusPMS.T.MN.

WARNING

Electrical shock can cause personal injury and death. Shut

off all power to this equipment during installation. There

may be more than one disconnect switch. Tag all discon-

nect locations to alert others not to restore power until work

is completed.

Replacing Defective Modules — The Comfort-

Link^™replacement modules are shown in Table 36. If the main

base board (MBB) has been replaced, verify that all configura-

tion data is correct. Follow the Configuration mode table and

verify that all items under sub-modes UNIT, OPT1 and OPT2

are correct. Any additional field-installed accessories or op-

tions (RSET, SLCT sub-modes) should also be verified as well

as any specific time and maintenance schedules.

Refer to the Start-Up Checklist for 30MP Liquid Chillers

(completed at time of original start-up) found in the job folder.

This information is needed later in this procedure. If the check-

list does not exist, fill out the current information in the Config-

uration mode on a new checklist. Tailor the various options and

configurations as needed for this particular installation.

1. Check that all power to unit is off. Carefully disconnect

all wires from the defective module by unplugging its

connectors.

2. Remove the defective module by removing its mounting

screws with a Phillips screwdriver, and removing the

module from the control box. Save the screws later use.

3. Verify that the instance jumper (MBB) or address switch-

es (all other modules) exactly match the settings of the

defective module.

NOTE: Handle boards by mounting standoffs only to

avoid electrostatic discharge.

4. Package the defective module in the carton of the new

module for return to Carrier.

5. Mount the new module in the unit’s control box using a

Phillips screwdriver and the screws saved in Step 2.

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6. Reinstall all module connectors. For accessory Naviga-

tor™ device replacement, make sure the plug is installed

at TB3 in the LEN connector.

7. Carefully check all wiring connections before restoring

power.

UNIT ENABLE-OFF-REMOTE CONTACT SWITCH IS

OFF — When the switch is OFF, the unit will stop immediate-

ly. Place the switch in the ENABLE position for local switch

control or in the REMOTE CONTACT position for control

through remote contact closure.

CHILLED FLUID PROOF-OF-FLOW SWITCH OPEN —

After the problem causing the loss of flow has been corrected,

reset is manual by resetting the alarm with the scrolling

marquee.

OPEN 24-V CONTROL CIRCUIT BREAKER(S) — De-

termine the cause of the failure and correct. Reset circuit break-

er(s). Restart is automatic after MBB start-up cycle is com-

plete.

8. Verify the ENABLE/OFF/REMOTE CONTACT switch

is in the OFF position.

9. Restore control power. Verify that all module red LEDs

blink in unison. Verify that all green LEDs are blinking

and that the scrolling marquee or Navigator™ display is

communicating correctly.

10. Verify all configuration information, settings, set points

and schedules. Return the ENABLE/OFF/REMOTE

CONTACT switch to its previous position.

COOLING LOAD SATISFIED — Unit shuts down when

cooling load has been satisfied. Unit restarts when required to

satisfy leaving fluid temperature set point.

Table 36 — Replacement Modules

THERMISTOR FAILURE — If a thermistor fails in either an

open or shorted condition, the unit will be shut down. Replace

EWT, or LWT as required. Unit restarts automatically, but must

be reset manually by resetting the alarm with the scrolling

marquee.

REPLACEMENT

MODULE

PART NO.

(with Software)

Main Base Board (MBB)

Scrolling Marquee Display

Energy Management Module (EMM)

Navigator Display

30MP500346

HK50AA031

30GT515218

HK50AA033

CAUTION

If unit stoppage occurs more than once as a result of any of

the safety devices listed, determine and correct cause

before attempting another restart.

MAINTENANCE

Recommended Maintenance Schedule — The fol-

lowing are only recommended guidelines. Jobsite conditions

may dictate that maintenance schedule is performed more often

than recommended.

LOW SATURATED SUCTION — Several conditions can

lead to low saturated suction alarms and the chiller controls

have several override modes built in which will attempt to keep

the chiller from shutting down. Low fluid flow, low refrigerant

charge and plugged filter driers are the main causes for this

condition. To avoid permanent damage and potential freezing

of the system, do NOT repeatedly reset these alert and/or alarm

conditions without identifying and correcting the cause(s).

Routine:

Every month:

•

Check moisture indicating sight glass for possible refrig-

erant loss and presence of moisture.

Every 3 months (for all machines):

COMPRESSOR SAFETIES — The 30MP units with Com-

fortLink™ controls include a compressor protection board that

protects the operation of each of the compressors. Each board

senses the presence or absence of current to each compressor.

If there is a command for a compressor to run and there is

no current, then one of the following safeties or conditions

have turned the compressor off:

Compressor Overcurrent — All compressors have internal

line breaks or a motor protection device located in the com-

pressor electrical box.

Compressor Short Circuit — There will not be current if the

compressor circuit breaker that provides short circuit protection

has tripped.

Compressor Motor Over Temperature — The internal line-

break or over temperature switch has opened.

High-Pressure Switch Trip — The high pressure switch has

opened. See Table 31 for the factory settings for the fixed high

pressure switch.

ASTP Protection Trip — All non-digital Copeland compres-

sors are equipped with an advanced scroll temperature protec-

tion (ASTP). A label located above the terminal box identifies

models that contain this technology. See Fig. 25.

•

Check refrigerant charge.

Check all refrigerant joints and valves for refrigerant

leaks, repair as necessary.

•

Check chilled water flow switch operation.

Check compressor oil level.

Every 12 months (for all machines):

•

Check all electrical connections, tighten as necessary.

Inspect all contactors and relays, replace as necessary.

Check accuracy of thermistors, replace if greater than

± 2° F (1.2° C) variance from calibrated thermometer.

Check to be sure that the proper concentration of anti-

freeze is present in the chilled water loop, if applicable.

Verify that the chilled water loop is properly treated.

Check refrigerant filter driers for excessive pressure

drop, replace as necessary.

Check chilled water and condenser strainers, clean as

necessary.

Perform Service Test to confirm operation of all

components.

•

Check for excessive cooler approach (Leaving Chilled

Water Temperature — Saturated Suction Temperature)

which may indicate fouling. Clean evaporator if

necessary.

Advanced scroll temperature protection is a form of internal

discharge temperature protection that unloads the scroll com-

pressor when the internal temperature reaches approximately

300 F. At this temperature, an internal bi-metal disk valve

opens and causes the scroll elements to separate, which stops

compression. Suction and discharge pressures balance while

the motor continues to run. The longer the compressor runs un-

loaded, the longer it must cool before the bi-metal disk resets.

See Fig. 26 for approximate reset times.

TROUBLESHOOTING

Complete Unit Stoppage and Restart — Possi-

ble causes for unit stoppage and reset methods are shown be-

low and in Table 37. Refer to Fig. 3-7 for component arrange-

ment and control wiring diagrams.

GENERAL POWER FAILURE — After power is restored,

restart is automatic through normal MBB start-up.

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the compressor is commanded OFF and the current sensor

reads ON, an alert is generated. This will indicate that a com-

pressor contactor has failed closed. In this case, a special mode,

Compressor Stuck on Control, will be enabled and all other

compressors will be turned off. An alarm will then be enabled

to indicate that service is required. Outdoor fans will continue

to operate. The condenser output is turned on immediately.

Alarms and Alerts — These are warnings of abnormal

or fault conditions, and may cause either one circuit or the

whole unit to shut down. They are assigned code numbers as

described in Table 38.

Automatic alarms will reset without operator intervention if

the condition corrects itself. The following method must be

used to reset manual alarms:

Fig. 25 — Advanced Scroll Temperature

Protection Label

Before resetting any alarm, first determine the cause of the

alarm and correct it. Enter the Alarms mode indicated by the

LED on the side of the scrolling marquee display. Press

To manually reset ASTP, the compressor should be stopped

and allowed to cool. If the compressor is not stopped, the motor

will run until the motor protector trips, which occurs up to

90 minutes later. Advanced scroll temperature protection will

reset automatically before the motor protector resets, which

may take up to 2 hours.

High Discharge Gas Temperature Protection — Units

equipped with optional digital compressors have an additional

thermistor located on the discharge line, If discharge tempera-

ture exceeds 265 F (129.4 C), the digital compressor will be

shut off.

and

until the sub-menu item RCRN “RESET

ENTER

ALL CURRENT ALARMS” is displayed. Press

ENTER

The control will prompt the user for a password, by displaying

PASS and WORD. Press to display the default pass-

ENTER

for each character. If the password

word, 1111. Press

ENTER

has been changed, use the arrow keys to change each individu-

al character. Toggle the display to “YES” and press

The alarms will be reset.

ENTER

Alarms will also occur if the current sensor board malfunc-

tions or is not properly connected to its assigned digital input. If

120

110

100

Compressor Unloaded Run Time (Minutes)

*Times are approximate.

NOTE: Various factors, including high humidity, high ambient temperature,

and the presence of a sound blanket will increase cool-down times.

Fig. 26 — Recommended Minimum Cool Down Time After Compressor is Stopped*

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Table 37 — Troubleshooting

SYMPTOMS

Compressor Cycles

Off on Loss of Charge

CAUSE

REMEDY

Repair leak and recharge.

Loss of charge control. Acting erratically.

Replace control.

Low refrigerant charge

Low suction temperature

Thermistor failure

Add refrigerant.

Raise cooler leaving fluid temperature set point.

Replace thermistor.

Compressor Cycles Off on Out

of Range Condition

System load was reduced faster than controller could

remove stages

Unit will restart after fluid temperature rises back into the

control band. Avoid rapidly removing system load or

increase loop volume.

Temperature controller deadband setting is too low

High-pressure control acting erratically

Noncondensables in system

Raise deadband setting.

Replace control.

Compressor Shuts Down on

High-Pressure Control

Purge system.

Condenser scaled/dirty

Clean condenser.

Fans in remote condensing unit (30MPA only) not operating Repair or replace if defective.

System overcharged with refrigerant

Low refrigerant charge

Control contacts fused

Air in system

Reduce charge.

Unit Operates Too Long

or Continuously

Add refrigerant.

Replace control.

Purge system.

Partially plugged or plugged expansion valve or filter drier

Defective insulation

Clean or replace as needed.

Replace or repair as needed.

Keep doors and windows closed.

Check compressor and replace if necessary.

Support piping as required.

Check for loose pipe connections or damaged compressor

Add refrigerant.

Service load

Damaged compressor

Unusual or Loud System

Noises

Piping vibration

Expansion valve hissing

Compressor noisy

Check for plugged liquid line filter drier.

Replace compressor (worn bearings).

Check for loose compressor holddown bolts.

Repair leak.

Compressor Loses Oil

Leak in system

Mechanical damage (Failed seals or broken scrolls)

Oil trapped in line

Replace compressor.

Check piping for oil traps.

Repair leak and recharge.

Replace filter drier.

Hot Liquid Line

Shortage of refrigerant due to leak

Restricted filter drier

Frosted Liquid Line

Frosted Suction Line

Expansion valve admitting excess refrigerant (note: this is a Replace valve if defective.

normal condition for brine applications)

Stuck TXV

Replace valve if defective.

Freeze-Up

Improper charging

Make sure a full quantity of fluid is flowing through the cooler

while charging, and suction pressure in cooler is equal to or

greater than pressure corresponding to 32 F (0° C).

System not drained for winter shutdown

Loose Thermistor

Recommended that system be filled with an appropriate gly-

col mixture to prevent freezing of pumps and fluid tubing.

Verify thermistors are fully inserted in wells.

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Table 38 — Alarm and Alert Codes

ALARM/ ALARM

WHY WAS THIS

ACTION TAKEN

ALARM

RESET

METHOD

PROBABLE

CAUSE

ALERT

CODE

DESCRIPTION

BY CONTROL

GENERATED?

ALERT

Circuit A Compressor

Availability Alarm

Two compressors on circuit

Circuit shut down

failed

Only one compressor

operating.

A048

T051

Alarm

Alert

Manual

High-pressure switch open,

faulty CSB, loss of condenser

flow, filter drier plugged, non-

condensables, operation

beyond capability.

Circuit A, Compressor 1

Failure

Compressor feedback signal

does not match relay state

Compressor A1 shut

down.

High-pressure switch open,

faulty CSB, loss of condenser

flow, filter drier plugged, non-

condensables, operation

beyond capability.

Respective current sensor

board (CSB) feedback signal

is ON when the compressor

should be off

Circuit A, Compressor 1

Failure

A051

T052

A052

T053

Alarm

Alert

Unit shut down

Manual

High-pressure switch open,

faulty CSB, loss of condenser

flow, filter drier plugged, non-

condensables, operation

beyond capability.

Circuit A, Compressor 2

Failure

Compressor feedback signal

does not match relay state

Compressor A2 shut

down.

High-pressure switch open,

faulty CSB, loss of condenser

flow, filter drier plugged, non-

condensables, operation

beyond capability.

Respective current sensor

board (CSB) feedback signal

is ON when the compressor

should be off

Circuit A, Compressor 2

Failure

Alarm

Alert

Unit shut down

High-pressure switch open,

faulty CSB, loss of condenser

flow, filter drier plugged, non-

condensables, operation

beyond capability.

Circuit A, Compressor 3

Failure

Compressor feedback signal

does not match relay state

Compressor A3 shut

down.

High-pressure switch open,

faulty CSB, loss of condenser

flow, filter drier plugged, non-

condensables, operation

beyond capability.

Respective current sensor

board (CSB) feedback signal

is ON when the compressor

should be off

Circuit A, Compressor 3

Failure

A053

A060

Alarm

Unit shut down

Manual

Cooler Leaving Fluid

Thermistor Failure

Thermistor outside range of

–40 to 245 F (–40 to 118 C)

Chiller shut down

immediately

Thermistor failure, damaged

cable/wire or wiring error.

Automatic

Cooler Entering Fluid

Thermistor Failure

Thermistor outside range of

–40 to 245 F (–40 to 118 C)

Chiller shut down

immediately

Thermistor failure, damaged

cable/wire or wiring error.

A061

T062

Alarm

Alert

Automatic

Condenser Leaving Fluid

Thermistor Failure

Thermistor outside range of

–40 to 245 F (–40 to 118 C)

Alert only.

No action taken.

Thermistor failure, damaged

cable/wire or wiring error.

T063

Alert

Condenser Entering Fluid

Thermistor Failure

Thermistor outside range of

–40 to 245 F (–40 to 118 C)

Alert only.

No action taken.

Automatic

Thermistor failure, damaged

cable/wire or wiring error.

If return gas sensors are

enabled (RG.EN) and

thermistor is outside range of

–40 to 245 F (–40 to 118 C)

Circuit A Return Gas

Thermistor Failure

Thermistor failure, damaged

cable/wire or wiring error.

T068

None

Circuit A shut down

Automatic

Temperature reset

disabled. Chiller runs

under normal control/set

points.

Thermistor outside range of

–40 to 245 F (–40 to 118 C)

(if enabled)

Outside Air Thermistor

Failure

Thermistor failure, damaged

cable/wire or wiring error.

T073

T074

A077

Alert

Automatic

Manual

Temperature reset

disabled. Chiller runs

under normal control/set

points.

Thermistor outside range of

–40 to 245 F (–40 to 118 C)

(if enabled)

Space Temperature/Dual Chiller

Thermistor Failure

Thermistor failure, damaged

cable/wire or wiring error.

Circuit A Saturated

Suction Temperature

exceeds Cooler Leaving

Fluid Temperature

Faulty expansion valve,

suction pressure transducer

or leaving fluid thermistor.

Faulty expansion valve or

suction pressure transducer

or leaving fluid thermistor.

Circuit A shutdown after

pumpdown complete.

Alarm

Dual LWT thermistor failure,

damaged cable/wire or

wiring error.

Lead/Lag LWT

Thermistor outside range of

–40 to 245 F (–40 to 118 C)

Chiller runs as a stand

alone machine

T079

A090

Alert

Automatic

Thermistor Failure

Transducer failure, poor

connection to MBB, or wiring

damage/error.

Circuit A Discharge

Pressure Transducer Failure

Alarm

Outside of range (0 - 667 psig) Circuit A shut down

Transducer failure, poor

connection to MBB, or wiring

damage/error.

Circuit A Suction

A092

T094

Alarm

Alert

Outside of range (0 - 420 psig) Circuit A shut down

Discharge thermistor (DTT) is Digital compressor shut

Automatic

Pressure Transducer Failure

Discharge Gas

Thermistor Failure

Thermistor failure, damaged

cable/wire or wiring error.

either open or shorted

down.

If the compressors are off

and discharge pressure

reading is < 26 psig for

30 sec.

Circuit not allowed to

start.

Refrigerant leak or

transducer failure

A110

A112

Alarm Circuit A Loss of Charge

Manual

Circuit saturated suction

temperature pressure

transducer > 70 F (21.1 C)

for 5 minutes

Faulty Expansion valve,

faulty suction pressure

transducer or high entering

fluid temperature.

Circuit A High Saturated

Alarm

Circuit shut down

Suction Temperature

Automatic restart Faulty expansion valve,

Suction superheat is

less than 5° F (2.8 C) for 5

minutes. (if RGT installed)

after first daily

occurrence.

Manual restart

thereafter.

faulty suction pressure

transducer, faulty suction gas

thermistor, circuit

Circuit A Low Suction

Superheat

A114

Alarm

Circuit A shut down.

overcharged

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Table 38 — Alarm and Alert Codes (cont)

ALARM/

ALERT

CODE

ALARM

ALERT

WHY WAS THIS

ACTION TAKEN

ALARM

RESET

METHOD

PROBABLE

CAUSE

DESCRIPTION

BY CONTROL

GENERATED?

Mode 7 caused the com-

Faulty expansion valve, low

refrigerant charge, plugged

filter drier, faulty suction

pressure transducer, low

cooler fluid flow

pressor to unload 6 consecu-

Circuit A Low Cooler

Suction Temperature

A116

A122

Alarm

tive times with less than a

30-minute interval between

each circuit shutdown.

Circuit shut down

Manual

High Pressure Switch

Trip Circuit A

High Pressure A Switch

Input opento MBB

Faulty transducer/high

pressure switch.

Manual

Automatic, only

after first 3 daily

occurrences.

Faulty transducer/high

pressure switch, low/

restricted condenser

airflow

SCT >Maximum condensing

temperature from operating

envelope

Manual reset

Circuit A High

A126

T133

Alarm

Alert

Circuit shut down

thereafter. Read-

ing from OAT sen-

sor must drop 5 F

(2.8 C) before

restart

Discharge Pressure

Automatic

Faulty or plugged EXV, low

refrigerant charge, EXV out

of adjustment, liquid

Suction pressure below

34 psig for 8 seconds or

below 23 psig

restart after first

daily occurrence.

Manual restart

thereafter.

Circuit A Low Suction

Pressure

line valve partially closed

Reverse any two incoming

power leads to correct. Check

for correct fan rotation first.

Reverse Rotation

Detected

Incoming chiller power leads Chiller not allowed to

A140

A150

A151

Alert

Alarm

Manual

not phased correctly

start.

Automatic once

Chiller shutdown

without going through

pumpdown.

CCN emergency stop

command received

CCN command for CCN Network

EMSTOP returns to command.

normal

Emergency Stop

Manual once

configuration errors

are corrected

One or more illegal

configurations exists.

Chiller is not allowed to

start.

Configuration error.

Check unit settings.

Illegal Configuration

Automatic once

alarms/alerts are

cleared that pre-

Alarm notifies user

that chiller is 100%

Unit Down Due to

Failure

Both circuits are down due

to alarms/alerts.

Chiller is unable

to run.

A152

Alarm

vent the chiller from down.

starting.

Occupancy schedule

will not be used. Chiller

defaults to Local On

mode.

Automatic when

correct clock con-

trol restarts.

Time/Date/Month/

Real Time Clock

Hardware Failure

T153

A154

Alert

Internal clock on MBB fails

Hardware failure with MBB

Day/Year not

properly set.

Serial EEPROM

Hardware Failure

Chiller is unable

to run.

Main Base Board

failure.

Alarm

Manual

Potential failure of

MBB. Download

Serial EEPROM

Storage Failure

Configuration/storage

failure with MBB

T155

Alert

No Action

Manual

current operating

software. Replace

MBB if error occurs again.

Critical Serial EEPROM

Storage Failure

Configuration/storage

failure with MBB

Chiller is not allowed

to run.

Main Base Board

failure.

A156

A157

Alarm

Manual

Hardware failure with

peripheral device

Chiller is not allowed

to run.

Main Base Board

failure.

A/D Hardware Failure

4 to 20 mA

temperature reset

disabled. Demand

Limit set to 100%. 4 to

20 mA set point

disabled.

Wiring error, faulty

wiring or failed

Energy Management Module

(EMM).

Loss of Communication

with EMM

MBB loses communication

with EMM

T173

Alert

Automatic

If configured with EMM and

input less than 2 mA or

greater than 22 mA

Set point function

disabled. Chiller

controls to CSP1.

Faulty signal

4 to 20 mA Cooling Set

Point Input Failure

T174

T176

Alert

Automatic

generator, wiring

error, or faulty EMM.

Reset function

4 to 20 mA

Temperature Reset

Input Failure

If configured with EMM

and input less than 2 mA or

greater than 22 mA

Faulty signal

generator, wiring

error, or faulty EMM.

disabled. Chiller

returns to normal set

point control.

Demand limit function

disabled. Chiller

returns to 100%

demand limit

If configured with EMM and

input less than 2 mA or

greater than 22 mA

Faulty signal

generator, wiring

error, or faulty EMM.

4 to 20 mA Demand

Limit Input Failure

T177

Alert

Automatic

control.

See legend on page 51.

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Table 38 — Alarm and Alert Codes (cont)

ALARM/

ALERT

CODE

ALARM

ALERT

WHY WAS THIS

ACTION TAKEN

ALARM

RESET

METHOD

PROBABLE

CAUSE

DESCRIPTION

BY CONTROL

GENERATED?

Cooler flow switch contacts

failed to close within

1 minute (if cooler pump

control is enabled) or

within 5 minutes (if cooler

pump control is not

Chiller not allowed to

start. For models with

dual pumps, the

second pump will be

started if available

Cooler Flow/Interlock

Contacts failed to Close

at start-up

Faulty flow switch or

interlock.

T200

Alert

Manual

enabled) after start-up

All compressors shut

down. For models with

dual pumps, the

Cooler Flow/Interlock

Contacts Opened

During Normal

Operation

Flow switch opens for at

least 3 seconds after

being initially closed

Cooler pump failure,

faulty flow switch or

interlock.

A201

A202

Alarm

second pump will be

started if available

If configured for cooler

pump control and flow

switch input is closed for

5 minutes while pump

output(s) are off

Cooler Pump Interlock

Closed When Pump is

Off

Wiring error, faulty

pump contactor

(welded contacts)

Automatic when

aux contacts open

Chiller shut down

Wiring error, faulty

wiring, failed Slave

chiller MBB module,

power loss at slave

chiller, wrong slave

address.

Dual chiller control

disabled. Chiller runs

as a stand-alone

machine.

Master chiller MBB

loses communication

with slave chiller MBB

Loss of Communication

with slave chiller

T203

T204

Alert

Automatic

Wiring error, faulty

wiring, failed master

chiller MBB module,

power loss at Master

chiller.

Dual chiller control

disabled. Chiller runs

as a stand-alone

machine

Slave chiller MBB loses

communication with

master chiller MBB

Loss of Communication

with master chiller

CCN Address for

both chillers is the

same. Must be

different. Check

CCN.A under the

OPT2 sub-mode in

Configuration at both

chillers.

Dual chiller routine

disabled. Master/slave

run as stand-alone

chillers.

Master and slave chiller

have the same CCN

address (CCN.A)

Master and slave chiller

with same address

T205

Alert

Automatic

Building load greater

than unit capacity,

low water/brine flow

or compressor fault.

Check for other

LWT read is greater than

LCW Alert Limit, Total

capacity is 100% and LWT

is greater than LWT

High Leaving Chilled

Water Temperature

Alert only. No action

taken.

T206

A207

Alert

Automatic

reading one minute ago

alarms/alerts.

Chiller shutdown

without going through

pumpdown. Cooler

pump continues to

run a minimum of

5 minutes (if control

enabled).

Both EWT and LWT

must be at least 6 F

(3.3 C) above Brine

Freeze point

(BR.FZ). Automatic

for first, Manual reset

there after.

Faulty thermistor

(T1/T2), low water

flow.

Cooler Freeze

Protection

Cooler EWT or LWT is less

than Brine Freeze (BR.FZ)

Alarm

Cooler EWT is less than

LWT by 3° F (1.7° C) for

1 minute after a circuit is

started

Faulty cooler pump,

low water flow,

plugged fluid

strainer.

Chiller shutdown.

EWT or LWT

A208

A220

Alarm

Cooler pump shut off

(if control enabled).

Manual

Thermistor failure

Condenser Pump

Interlock Failure to

If configured for con-

denser pump interlock

and the flow switch

Condenser and cooler

pumps shut off.

Chiller shutdown with-

out going through

pumpdown.

Failure of condenser

pump or controls.

Wiring error.

at Start-Up

input fails to close with-

in 5 minutes after start-

up. Also valid when

configured for con-

denser pump control.

A221

A222

Alarm

Condenser Pump

If configured for con-

denser pump interlock

and the flow switch

opens for 15 seconds

during normal

operation (or when

the condenser pump

relay is on when con-

denser pump control

is configured.)

Condenser and cooler

pumps shut off. Chiller

shutdown without

going through pump-

down.

Manual

Failure of condenser

pump or controls.

Wiring error.

Interlock Opened During

Normal Operation

Alarm

Condenser Pump

Interlock Closed When

Pump is Off

If configured for con-

denser pump interlock

condenser pump con-

trol, and the flow

switch is closed

when pump relay is off.

Chiller is not allowed to

start.

Manual

Failure of condenser

pump relays or inter-

locks, welded

contacts.

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Table 38 — Alarm and Alert Codes (cont)

ALARM/

ALERT

CODE

ALARM

ALERT

WHY WAS THIS

ACTION TAKEN

ALARM

RESET

METHOD

PROBABLE

CAUSE

DESCRIPTION

BY CONTROL

GENERATED?

Strainer Service

Countdown (S.T.DN)

Strainer Blowdown

Scheduled

Maintenance Due

Routine strainer

maintenance

required

expired. Complete strainer

T302

Alert

None

Automatic

blowdown and enter 'YES'

for Strainer Maintenance

Done (S.T.MN) item.

Current Sensor Board

A1 Failure

Alert occurs when CSB out-

put is a constant high value

Compressor A1 shut

down

CSB failure.

T500

T501

Alert

Automatic

Current Sensor Board

A2 Failure

Alert occurs when CSB out-

put is a constant high value

Compressor A2 shut

down

Current Sensor Board

A3 Failure

Alert occurs when CSB out-

put is a constant high value

Compressor A3 shut

down

T502

T950

Alert

Automatic

Loss of Communication

with Water System

Manager

No communications have

been received by the MBB

within 5 minutes of last

transmission

WSM forces removed.

Chiller runs under own

control

Failed module, wiring

error, failed

transformer, loose

connection plug,

wrong address

T951

Alert

Loss of Communication

with Chillervisor System

Manager

No communications have

been received by the MBB

within 5 minutes of last

transmission

CSM forces removed.

Chiller runs under own

control

Automatic

Failed module, wiring

error, failed

transformer, loose

connection plug,

wrong address

LEGEND

CCN

—

Carrier Comfort Network

Current Sensor Board

CSB

CSM

CXB

Chiller System Manager

Compressor Expansion Board

EEPROM

EMM

EWT

EXV

Electronic Eraseable Programmable Read Only Memory

Energy Management Module

Entering Fluid Temperature

Electronic Expansion Valve

Hydronic System Manager

Leaving Chilled Water

HSM

LCW

LWT

Leaving Fluid Temperature

Main Base Board

MBB

OAT

Outdoor-Air Temperature

RGT

Return Gas Thermistor

WSM

Water System Manager

COMPRESSOR FAILURE ALERTS

To check out alerts T051-T053:

A048 (Circuit A Compressor Availability Alarm) — This

alarm occurs when two compressors are unavailable to run on

a 3 compressor circuit. The control ensures proper oil return by

ensuring a circuit does not operate with one compressor for

longer than one hour of cumulative run time.

1. Turn on the compressor in question using Service Test

mode. If the compressor does not start, then most likely

the problem is one of the following: HPS open, open in-

ternal protection, circuit breaker trip, incorrect safety wir-

ing, or incorrect compressor wiring.

T051, T052, T053 (Circuit A Compresser Failures) — Alert

codes 051, 052, and 053 are for compressors A1, A2, and A3

respectively. These alerts occur when the current sensor (CS)

does not detect compressor current during compressor opera-

tion. When this occurs, the control turns off the compressor.

If the current sensor board reads OFF while the compressor

relay has been commanded ON, an alert is generated.

2. If the compressor does start, verify it is rotating in the cor-

rect direction.

IMPORTANT: Prolonged operation in the wrong direction

can damage the compressor. Correct rotation can be veri-

fied by a gage set and looking for a differential pressure

rise on start-up.

POSSIBLE CAUSES

IMPORTANT: If the CS is always detecting current, verify

that the compressor is on. If the compressor is on, check

the contactor and the relay on the MBB. If the compressor

is off and there is no current, verify the CSB wiring and

replace if necessary.

Compressor Overload — Either the compressor internal over-

load protector is open or the external overload protector (Kri-

wan module) has activated. The external overload protector

modules are mounted in the compressor wiring junction box.

Temperature sensors embedded in the compressor motor wind-

ings are the inputs to the module. The module is powered with

24 vac from the units main control box. The module output is a

normally closed contact that is wired in series with the com-

pressor contactor coil. In a compressor motor overload condi-

tion, contact opens, deenergizing the compressor contactor.

IMPORTANT: Return to Normal mode and observe com-

pressor operation to verify that compressor current sensor

is working.

COMPRESSOR STUCK ON FAILURE ALARMS

Low Refrigerant Charge — If the compressor operates for an

extended period of time with low refrigerant charge, the com-

pressor ASTP device will open, which will cause the compres-

sor to trip on its overload protection device.

Circuit A A051, A052, A053 — Alarm codes 051, 052, and

053 are for compressors A1, A2, and A3. These alarms occur

when the CSB detects current when the compressor should be

off. When this occurs, the control turns off the compressor.

Circuit Breaker Trip — The compressors are protected from

short circuit by a breaker in the control box.

Wiring Error — A wiring error might not allow the compres-

sor to start.

If the current sensor board reads ON while the compressor

relay has been commanded OFF for a period of 4 continuous

seconds, an alarm is generated. These alarms are only moni-

tored for a period of 10 seconds after the compressor relay has

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been commanded OFF. This is done to facilitate a service tech-

nician forcing a relay to test a compressor.

In addition, if a compressor stuck failure occurs and the cur-

rent sensor board reports the compressor and the request off,

certain diagnostics will take place as follows:

leaving water for 5 minutes. This alarm will occur if either the

suction pressure transducer reading, which is used to calculate

SST, or cooler leaving water is incorrect. Potential causes for

this alarm are loose wiring connection, sensor not located in

well or bad Schrader fitting. Reset is manual.

T079 (Dual Chiller Thermistor Failure) — This alert occurs

when the dual chiller temperature sensor is outside its range of

–40 to 240 F. Failure of this thermistor will disable Dual Chill-

er operation and return to stand-alone operation. The unit must

be configured for Dual Chiller operation for this alert to occur.

The cause of the alert is usually a faulty thermistor, a shorted or

open thermistor caused by a wiring error, or a loose connection.

Reset is automatic.

1. If any of the compressors are diagnosed as stuck on and

the current sensor board is on and the request is off, the

control will command the condenser fans to maintain

normal head pressure.

2. The control will shut-off all other compressors.

The possible causes include welded contactor or frozen

compressor relay on the MBB.

To check out alarms A051 to A053:

A090 (Circuit A Discharge Pressure Transducer Failure) —

This alarm occurs when the pressure is outside the range of 0.0

to 667.0 psig. A circuit cannot run when this alarm is active.

Use the scrolling marquee to reset the alarm. The cause of the

alarm is usually a faulty transducer, faulty 5-v power supply, or

a loose connection.

1. Place the unit in Service Test mode. All compressors

should be off.

2. Verify that there is not 24-v at the contactor coil. If there

is 24 v at the contactor, check relay on MBB and wiring.

3. Check for welded contactor.

4. Verify CSB wiring.

5. Return to Normal mode and observe compressor opera-

tion to verify that compressor current sensor is working

and condenser fans are energized.

A092 (Circuit A Suction Pressure Transducer Failure)

—

This alarm occurs when the pressure is outside the range of 0.0

to 420.0 psig. A circuit cannot run when this alarm is active.

Use the scrolling marquee to reset the alarm. The cause of the

alarm is usually a faulty transducer, faulty 5-v power supply, or

a loose connection.

A060 (Cooler Leaving Fluid Thermistor Failure)

—

The

T094 (Discharge Gas Thermistor Failure) — This alert oc-

curs for units which have the digital compressor installed on

circuit A. If discharge gas temperature is open or shorted, the

circuit will be shut off. The alert will reset itself when discharge

temperature is less than 250 F (121.1 C). The cause of the alert

is usually low refrigerant charge or a faulty thermistor.

A110 (Circuit A Loss of Charge) — This alarm occurs when

the compressor is OFF and the discharge pressure is less than

26 psig.

sensor reading is outside the range of –40 to 245 F (–40 to

118 C) then the alarm will occur. The cause of the alarm is usu-

ally a faulty thermistor, a shorted or open thermistor caused by

a wiring error, or a loose connection. Failure of this thermistor

will shut down the entire unit.

A061 (Cooler Entering Thermistor Failure) — If the sensor

reading is outside the range of –40 to 240 F (–40 to116 C) then

the alarm will occur. The cause of the alarm is usually a faulty

thermistor, a shorted or open thermistor caused by a wiring er-

ror, or a loose connection. Failure of this thermistor will shut

down the entire unit.

T062 (Condenser Leaving Fluid Thermistor Failure) — The

sensor reading is outside the range of –40 to 245 F (–40 to

118 C) then the alert will occur. The cause of the alert is usually

a faulty thermistor, a shorted or open thermistor caused by a

wiring error, or a loose connection. Failure of this thermistor

will send out an alert only.

T063 (Condenser Entering Thermistor Failure) — If the sen-

sor reading is outside the range of –40 to 240 F (–40 to116 C)

then the alert will occur. The cause of the alert is usually a

faulty thermistor, a shorted or open thermistor caused by a wir-

ing error, or a loose connection.Failure of this thermistor will

send out an alert only.

T068 (Circuit A Compressor Return Gas Temperature

Thermistor Failure) — This alert occurs if the RGT is config-

ured and the compressor return gas temperature sensor is out-

side the range of –40 to 240 F (–40 to 116 C). Failure of this

thermistor will shut down the appropriate circuit.

A112 (Circuit A High Saturated Suction Temperature)

—

Alarm code 112 occurs when compressors in a circuit have

been running for at least 5 minutes and the circuit saturated

suction temperature is greater than 70 F (21.1 C). The high sat-

urated suction alarm is generated and the circuit is shut down.

A114 (Circuit A Low Superheat) — Alarm code 114 occurs

when the superheat of a circuit is less than 5 F (2.8 C) for 5

continuous minutes. The low superheat alarm is generated and

the circuit is shut down. The RGT sensor must be installed.

A122 (Circuit A, High Pressure Switch Failure) — The

high pressure switch is wired in series with the compressor

contactor coils of each compressor on the circuit to disable

compressor operation immediately upon a high discharge pres-

sure condition. The normally closed contacts in the switches

are calibrated to open at 650 ± 10 psig which corresponds to a

saturated condensing temperature of 155.6 ± 1.3 F. The pres-

sure switches will automatically reset when the discharge pres-

sure is reduced to 500 ± 15 psig which corresponds to a saturat-

ed condensing temperature of 134.1 ± 2.4 F.

The output of the high pressure switch is wired to inputs on

the MBB to provide the control with an indication of a high

pressure switch trip. This alert could occur when compressors

are off if the wiring to the switch is broken or the switch has

failed open.

T073 (Outside Air Temperature Thermistor Failure) — This

alert occurs when the outside air temperature sensor is outside

the range of –40 to 240 F (–40 to 116 C). Failure of this therm-

istor will disable any elements of the control which requires its

use. The OAT must be configured.

If the high pressure switch trips on a circuit with compres-

sors commanded on, the discharge pressure is recorded. If the

recorded discharge pressure is between 630 to 660 psig (satu-

rated condensing temperature between 153.0 and 156.9 F), and

is also less than the value recorded on any previous high pres-

sure switch trip, the upper horizontal portion of the compressor

operating envelope (see Fig. 12) is lowered 0.4 F (3 psig). The

control will not allow the compressor operating envelope to be

lowered below 153.0 F (630 psig).

T074 (Space Temperature Thermistor Failure) — This alert

occurs when the space temperature sensor is outside the range

of –40 to 245 F (–40 to 118 C). Failure of this thermistor will

disable any elements of the control which requires its use. The

cause of the alert is usually a faulty thermistor in the T55, or

T58 device, a shorted or open thermistor caused by a wiring er-

ror, or a loose connection. The SPT must be configured.

A077 (Circuit Saturated Suction Temperature Exceeds

Cooler Leaving Water Temperature) — This alarm occurs

when the saturated suction temperature (SST) is greater than

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This is done to make a rough calibration of the high pres-

sure switch trip point. In most cases this allows the control to

detect a high head pressure condition prior to reaching the high

pressure switch trip point.

When the trip occurs, all mechanical cooling on the circuit

is shut down for 15 minutes. After 15 minutes, the circuit is al-

lowed to restart.

A126 (Circuit A High Head Pressure) — This alarm occurs

when the appropriate saturated condensing temperature is

greater than the operating envelope shown in Fig 12. Prior to

the alarm, the control will shut down one compressor on a cir-

cuit if that circuit's saturated condensing temperature is greater

than the maximum SCT minus 5° F (2.7° C). If SCT continues

to rise to greater than the maximum SCT, the alarm will occur

and the circuit's remaining compressor will shut down. The

cause of the alarm is usually an overcharged system, high out-

door ambient temperature coupled with dirty outdoor coil

(30MPA only), plugged filter drier, a faulty high-pressure

switch, or loss of condenser water flow.

• Invalid unit size has been entered.

• Unit configuration set to invalid type.

A152 (Unit Down Due to Failure) — Reset is automatic

when all alarms are cleared. This alarm indicates the unit is at

0% capacity.

T153 (Real Time Clock Hardware Failure) — A problem

has been detected with MBB real time clock hardware. Try re-

setting the power and check the indicator lights. If the alarm

continues, the board should be replaced.

A154 (Serial EEPROM Hardware Failure) — A problem

has been detected with the EEPROM on the MBB. Try

resetting the power and check the indicator lights. If the alarm

continues, the board should be replaced.

T155 (Serial EEPROM Storage Failure Error) — A problem

has been detected with the EEPROM storage on the MBB. Try

resetting the power and check the indicator lights. If the alert

continues, the board should be replaced.

A156 (Critical Serial EEPROM Storage Failure Error) — A

problem has been detected with the EEPROM storage on the

MBB. Try resetting the power and check the indicator lights. If

the alarm continues, the board should be replaced.

A140 (Reverse Rotation Detected) — A test is made once, on

power up, for suction pressure change on the first activated cir-

cuit. The unit control determines failure as follows:

A157 (A/D Hardware Failure) — A problem has been detect-

ed with A/D conversion on the boards. Try resetting the power

and check the indicator lights. If the alarm continues, the board

should be replaced.

T173 (Energy Management Module Communication Fail-

ure) — This alert indicates that there are communications

problems with the energy management. All functions per-

formed by the EMM will stop, which can include demand lim-

it, reset and capacity input. The alert will automatically reset.

T174 (4 to 20 mA Cooling Set point Input Failure) — This

alert indicates a problem has been detected with cooling set

point 4 to 20 mA input. The input value is either less than 2 mA

or greater than 22 mA.

T176 (4 to 20 mA Reset Input Failure) — This alert indi-

cates a problem has been detected with reset 4 to 20 mA input.

The input value is either less than 2 mA or greater than 22 mA.

The reset function will be disabled when this occurs.

1. The suction pressure is sampled 5 seconds before the

compressor is brought on, right when the compressor is

brought on and 5 seconds afterwards.

2. The rate of suction pressure change from 5 seconds be-

fore the compressor is brought on to when the compres-

sor is brought on is calculated.

3. The rate of suction pressure change from when the

compressor is brought on to 5 seconds afterwards is

calculated.

4. With the above information, the test for reverse rotation is

made. If the suction pressure change 5 seconds after com-

pression is greater than the suction pressure change 5 sec-

onds before compression – 1.25, then there is a reverse

rotation error.

This alarm will disable mechanical cooling and will require

manual reset. This alarm may be disabled once the reverse ro-

tation check has been verified by setting REV.R = Yes.

A150 (Unit is in Emergency Stop) — If the CCN emergency

stop command is received, the alarm is generated and the unit

will be immediately stopped.

If the CCN point name "EMSTOP" in the system table is set

to emergency stop, the unit will shut down immediately and

broadcast an alarm back to the CCN, indicating that the unit is

down. This alarm will clear when the variable is set back to

"enable."

A151 (Illegal Configuration) — An A151 alarm indicates an

invalid configuration has been entered. The following are ille-

gal configurations.

T177 (4 to 20 mA Demand Limit Input Failure)

—

This

alert indicates a problem has been detected with demand limit

4 to 20 mA input. The input value is either less than 2 mA or

greater than 22 mA. The reset function will be disabled when

this occurs.

T500, T501, T502 (Current Sensor Board Failure — A xx

Circuit A — Alert codes 500, 501, and 502 are for compres-

sors A1, A2, and A3 respectively. These alerts occur when the

output of the CSB is a constant high value. These alerts reset

automatically. If the problem cannot be resolved, the CSB must

be replaced.

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APPENDIX A — LOCAL DISPLAY TABLES

Run Status Mode and Sub-Mode Directory

SUB-MODE

ITEM

DISPLAY

ITEM DESCRIPTION

AUTO VIEW OF RUN STATUS

Entering Fluid Temp

Leaving Fluid Temp

Active Setpoint

CCN POINT

COMMENT

EWT

LWT

xxx.x ºF

xxx

EWT

LWT

SETP

CTPT

LOD.F

STAT

OCC

Control Point

Load/Unload Factor

Control Mode

Occupied

Override Modes in

Effect

CTRL_PNT

SMZ

STAT

OCC

NO/YES

VIEW

MODE

CAP

STGE

ALRM

TIME

xxx

xx.xx

Percent Total Capacity

Requested Stage

Current Alarms & Alerts

Time of Day

CAP_T

STAGE

ALRMALRT

TIMECOPY

00:00-23:59

1 - 12 (1 = January,

2 = February, etc.)

MNTH

Month of Year

MOY

DATE

YEAR

Day of Month

Year of Century

DOM

YOCDISP

01-31

UNIT RUN HOUR AND START

Machine Operating

Hours

Machine Starts

Cooler Pump Run

Hours

HRS.U

STR.U

HR.P1

xxxx HRS

xxxx

HR_MACH

CY_MACH

HR_CPUMP

0 to 999999

0 to 1000000

0 to 999999.9

RUN

xxxx HRS

Condenser Pump Run

Hours

HR.P2

xxxx HRS

HR_DPUMP

0 to 999999.9

CIRC AND COMP RUN HOURS

Compressor A1 Run

Hours

Compressor A2 Run

Hours

Compressor A3 Run

Hours

HR.A1

HR.A2

HR.A3

xxxx HRS

HOURS_A1

HOURS_A2

HOURS_A3

0 to 999999

HOUR

STRT

COMPRESSOR STARTS

Compressor A1 Starts

Compressor A2 Starts

ST.A1

ST.A2

ST.A3

xxxx

CY_A1

CY_A2

CY_A3

0 to 999999

Compressor A3 Starts

PREVENTIVE MAINTENANCE

STRN

SI.ST

STRAINER MAINTENANCE

xxxx HRS

NO/YES

Strainer Srvc Interval

Strainer Srvc Count-

down

SI_STRNR

ST_CDOWN

ST_MAINT

0 to 65535

S.T.DN

S.T.MN

ST.DT

Strainer Maint. Done

STRAINER MAINT. DATES

S.T.M0

S.T.M1

S.T.M2

S.T.M3

S.T.M4

MM/DD/YY HH:MM

SOFTWARE VERSION NUMBERS

AUX

MBB

CESR131333-xx-xx

CESR131279-xx-xx

CESR131174-xx-xx

CESR131171-xx-xx

CESR130227-xx-xx

VERS

EMM

MARQ

NAVI

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Service Test Mode and Sub-Mode Directory

SUB-MODE

TEST

ITEM

DISPLAY

ITEM DESCRIPTION

CCN POINT

COMMENT

To enable Service Test mode, move

Enable/Off/Remote contact switch

ON/OFF

Service Test Mode

MAN_CTRL

OFF. Change TEST to ON.

Move switch to ENABLE

OUTPUTS AND PUMPS

CLR.P

CND.P

UL.TM

CC.H

CW.VO

CW.VC

LL.SV

RMT.A

OFF/ON

Cooler Pump Relay

Condenser Pump

Comp A1 Unload Time

Crankcase Heater

Condenser Valve Open

Condenser Valve Close

Liquid Line Solenoid

Remote Alarm Relay

CIRCUIT A COMPRESSOR TST

Compressor A1 Relay

Comp A1 Unload Time

Compressor A2 Relay

Compressor A3 Relay

Minimum Load Valve Relay

S_CLPMP

S_CNDPMP

S_A1ULTM

S_CCH

S_CWVO

S_CWVC

S_LLSV

0 to 15

OUTS

CMPA

S_ALM

CC.A1

UL.TM

CC.A2

CC.A3

MLV

OFF/ON

S_A1_RLY

S_A1ULTM

S_A2_RLY

S_A3_RLY

S_MLV

0 to 15

Temperature Mode and Sub-Mode Directory

SUB-MODE

UNIT

ITEM

DISPLAY

ITEM DESCRIPTION

CCN POINT

ENT AND LEAVE UNIT TEMPS

CEWT

CLWT

CDET

CDLT

OAT

xxx.x °F

Cooler Entering Fluid

Cooler Leaving Fluid

Condenser Entering Fluid

Condenser Leaving Fluid

Outside Air Temperature

Space Temperature

COOL_EWT

COOL_LWT

COND_EWT

COND_LWT

OAT

SPT

DLWT

SPT

DUAL_LWT

Lead/Lag Leaving Fluid

TEMPERATURES CIRCUIT A

SCT.A

SST.A

RGT.A

D.GAS

SH.A

xxx.x °F

xxx.x ΔF

Saturated Condensing Tmp

Saturated Suction Temp

Compr Return Gas Temp

Discharge Gas Temp

TMP_SCTA

TMP_SSTA

TMP_RGTA

DISGAS

CIR.A

Suction Superheat Temp

SH_A

Pressures Mode and Sub-Mode Directory

SUB-MODE

PRC.A

ITEM

DISPLAY

ITEM DESCRIPTION

CCN POINT

PRESSURES CIRCUIT A

xxx.x PSIG

DP.A

SP.A

Discharge Pressure

Suction Pressure

DP_A

SP_A

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Set Points Mode and Sub-Mode Directory

SUB-MODE

COOL

ITEM

DISPLAY

ITEM DESCRIPTION

COOLING SETPOINTS

Cooling Setpoint 1

RANGE

CCN POINT

CSP.1

CSP.2

CSP.3

xxx.x °F

–20 to 70

–20 to 32

CSP1

CSP2

CSP3

Cooling Setpoint 2

ICE Setpoint

HEAD PRESSURE SETPOINTS

Head Setpoint

BRINE FREEZE SETPOINT

Brine Freeze Point

HEAD

FRZ

H.DP

xxx.x °F

xx.x °F

85 to 120

–20 to 34

HSP

BR.FZ

BRN_FRZ

Inputs Mode and Sub-Mode Directory

SUB-MODE

ITEM

DISPLAY

ITEM DESCRIPTION

GENERAL INPUTS

Start/Stop Switch

CCN POINT

STST

FLOW

CD.FL

DLS1

DLS2

ICED

OFF/ON

START

Cooler Flow Switch

Condenser Flow Switch

Demand Limit Switch 1

Demand Limit Switch 2

Ice Done

COOLFLOW

CONDFLOW

DMD_SW1

DMD_SW2

ICE_DONE

DUAL_IN

GEN.I

DUAL

Dual Setpoint Switch

CIRCUIT INPUTS

FKA1

FKA2

FKA3

HPS.A

OFF/ON

Compressor A1 Feedback

Compressor A2 Feedback

Compressor A3 Feedback

High Pressure Switch A

K_A1_FBK

K_A2_FBK

K_A3_FBK

HPSA

CRCT

4-20

4-20 MA INPUTS

DMND

RSET

CSP

xx.x

4-20 ma Demand Signal

4-20 ma Reset Signal

4-20 ma Cooling Setpoint

LMT_MA

RST_MA

CSP_IN

Outputs Mode and Sub-Mode Directory

SUB-MODE

GEN.O

ITEM

DISPLAY

ITEM DESCRIPTION

CCN POINT

GENERAL OUTPUTS

C.LWP

C.DWP

ALRM

CDWO

CDWC

OFF/ON

Cooler Pump Relay

Condenser Pump

Alarm State

Condenser Valve Open

Condenser Valve Close

COOLPUMP

CONDPUMP

ALM

COND_WVO

COND_WVC

OUTPUTS CIRCUIT A

CC.A1

D.SOL

CC.A2

CC.A3

CCH

OFF/ON

Compressor A1 Relay

Digital Scroll Solenoid

Compressor A2 Relay

Compressor A3 Relay

Crankcase Heater Relay

Liquid Line Solenoid

K_A1_RLY

DISCRSOL

K_A2_RLY

K_A3_RLY

CCH_RLY

LLSV_A

CIR.A

LLSV

MLV.R

Minimum Load Valve Relay

MLV_RLY

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Configuration Mode and Sub-Mode Directory

SUB-MODE

DISP

ITEM

DISPLAY

ITEM DESCRIPTION

DISPLAY CONFIGURATION

Test Display LEDs

CCN POINT

COMMENT

TEST

OFF/ON

DISPTEST

DISPUNIT

METR

Metric Display

Off = English On = Metric

Default: 0

0 = English

1 = Espanol

2 = Francais

3 = Portuguese

LANG

Language Selection

LANGUAGE

PAS.E

PASS

DSBL/ENBL

XXXX

Password Enable

Service Password

PASS_EBL

PASSCOPY

0 to 9999

UNIT CONFIGURATION

2=Water Cooled, 3=Split

System

TYPE

Unit Type

UNIT_TYP

SIZE

SZA.1

SZA.2

SZA.3

A1.TY

MAX.T

XXX

Unit Size

SIZE

10 to 100

Compressor A1 Size

Compressor A2 Size

Compressor A3 Size

Compressor A1 Digital?

Maximum A1 Unload Time

UNIT OPTIONS 1 HARDWARE

Cooler Fluid

SIZE_A1

SIZE_A2

SIZE_A3

CPA1TYPE

MAXULTME

UNIT

NO/YES

0 to 15

FLUD

1 = Water

2 = Medium Temperature

Brine

FLUIDTYP

MLV.S

RG.EN

OAT.E

D.G.EN

CSB.E

CPC

NO/YES

DSBL/ENBL

OFF/ON

Minimum Load Vlv Select

Return Gas Sensor Enable

Enable OAT Sensor

Dischrge Gas Temp Enable

CSB Boards Enable

MLV_FLG

RGT_ENA

OAT_ENA

DISGASEN

CSB_ENA

CPC

OPT1

Cooler Pump Control

PM.DY

DPME

DFLS

XX MIN

Cooler Pump Shutdown Dly

PUMP_DLY

0 to 10

0 to 2

Enable Condenser Pump

Enable Cond Flow Switch

Enable Cond Wtr Sensors

CONDPMPE

CONDFLSW

CONDWTRS

DSBL/ENBL

CDWS

UNIT OPTIONS 2 CONTROLS

0=Switch, 1=Occupancy,

2=Occupancy, 3=CCN

CTRL

Control Method

CONTROL

OPT2

CCN

LCWT

DELY

ICE.M

High LCW Alert Limit

Minutes Off Time

LCW_LMT

DELAY

ICE_CNFG

2 to 60

0 to 15

DSBL/ENBL

Ice Mode Enable

CCN NETWORK CONFIGS

CCN Address

CCNA

CCNB

XXX

CCNADD

CCNBUS

1 to 239

0 to 239

1 = 2400

2 = 4800

3 = 9600

4 =19,200

5 =38,400

CCN Bus Number

BAUD

CCN Baud Rate

CCNBAUDD

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Configuration Mode and Sub-Mode Directory (cont)

SUB-MODE

ITEM

DISPLAY

ITEM DESCRIPTION

RESET COOL TEMP

CCN POINT

COMMENT

0 = No Reset

1 = 4 to 20 mA Input

2 = Outdoor Air Tempera-

ture

CRST

Cooling Reset Type

CRST_TYP

3 = Return Fluid

4 = Space Temperature

MA.DG

RM.NO

RM.F

XX.XΔF

XXX.X °F

XX.X °F

XXX.XΔF

XX.X °F

4-20 - Degrees Reset

Remote - No Reset Temp

Remote - Full Reset Temp

Remote - Degrees Reset

Return - No Reset Temp

Return - Full Reset Temp

Return - Degrees Reset

420_DEG

REM_NO

REM_FULL

REM_DEG

RTN_NO

-30 to 30

0 to125

-30 to 30

0 to 30

RM.DG

RT.NO

RT.F

RTN_FULL

RTN_DEG

0 to 10

-30 to 30

RT.DG

0 = None

1 = Switch

2 - 4 to 20 mA Input

3 = CCN Loadshed

DMDC

Demand Limit Select

DMD_CTRL

RSET

DM20

SHNM

SHDL

SHTM

DLS1

DLS2

XXX%

XXX

Demand Limit at 20 mA

Loadshed Group Number

Loadshed Demand Delta

Maximum Loadshed Time

Demand Limit Switch 1

Demand Limit Switch 2

DMT20MA

SHED_NUM

SHED_DEL

SHED_TIM

DLSWSP1

DLSWSP2

0 to 100

0 to 99

XXX%

XXX

0 to 60

0 to 120

0 to 100

XXX%

LLEN

Lead/Lag Chiller Enable

LL_ENA

DSBL/ENBL

MSSL

SLVA

SLVE/MAST

XXX

Master/Slave Select

Slave Address

MS_SEL

SLV_ADDR

0 to 239

0 = Master Leads

1 = Slave Leads

2 = Automatic

LLBL

Lead/Lag Balance Select

LL_BAL

LLBD

LLDY

PARA

XXX

Lead/Lag Balance Delta

Lag Start Delay

LL_BAL_D

LL_DELAY

PARALLEL

40 to 400 hours

0 to 30 minutes

NO/YES

Parallel Configuration

SETPOINT AND RAMP LOAD

0 = Single

1 = Dual Switch

2 = Dual CCN Occupied

3 = 4 to 20 mA Input

CLSP

Cooling Set Point Select

CLSP_TYP

SLCT

RL.S

DSBL/ENBL

X.X

Ramp Load Select

RAMP_EBL

CRAMP

0.2 to 2

CRMP

Cooling Ramp Loading

SCHD

Z.GN

Schedule Number

Deadband Multiplier

SCHEDNUM

Z_GAIN

0 to 99

1 to 4

X.X

SERVICE CONFIGURATION

Enable Compressor A1

Enable Compressor A2

Enable Compressor A3

Reverse Rotation Enable

BROADCAST CONFIGURATION

CCN Time/Date Broadcast

CCN OAT Broadcast

EN.A1

EN.A2

EN.A3

REV.R

DSBL/ENBL

ENABLEA1

ENABLEA2

ENABLEA3

REVR_ENA

SERV

BCST

T.D.BC

OAT.B

OFF/ON

CCNBC

OATBC

GSBC

G.S.BC

BC.AK

Global Schedule Broadcst

CCN Broadcast Ack'er

CCNBCACK

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Time Clock Mode and Sub-Mode Directory

SUB-MODE

TIME

ITEM

DISPLAY

ITEM DESCRIPTION

TIME OF DAY

Hour and Minute

CCN POINT

COMMENT

HH.MM

XX.XX

TIME

MONTH, DATE, DAY, AND YEAR

1 to 12 (1 = January,

2 = February, etc.)

1 to 31

1 - 7 (1 = Sunday,

2 = Monday, etc.)

MNTH

DOM

DAY

Month of Year

Day of Month

Day of Week

MOY

DOM

DATE

DOWDISP

YOCDISP

YEAR

XXXX

Year of Century

1999 to 2098

DAYLIGHT SAVINGS TIME

STR.M

STR.W

STR.D

Month

Week

Day

STARTM

STARTW

STARTD

Default: 4 Range 1 to 12

Default: 1 Range 1 to 5

Default: 7 Range 1 to 7

Default: 60 Range 0 to

Default: 10 Range 1 to

MIN.A

STP.M

Minutes to Add

Month

MINADD

STOPM

DST

STP.W

STP.D

Week

Day

STOPW

STOPD

Default: 5 Range 1to 5

Default: 7 Range 1 to 7

Default: 60 Range 0 to

MIN.S

Minutes to Subtract

MINSUB

HOL.L

HD.01

LOCAL HOLIDAY SCHEDULES

HOLIDAY SCHEDULE 01

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON01

HOLDAY01

HOLLEN01

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 02

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON02

HOLDAY02

HOLLEN02

0 to 12

0 to 31

0 to 99

HD.02

HD.03

HD.04

HD.05

HD.06

HD.07

HD.08

Duration (days)

HOLIDAY SCHEDULE 03

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON03

HOLDAY03

HOLLEN03

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 04

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON04

HOLDAY04

HOLLEN04

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 05

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON05

HOLDAY05

HOLLEN05

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 06

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON06

HOLDAY06

HOLLEN06

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 07

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON07

HOLDAY07

HOLLEN07

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 08

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON08

HOLDAY08

HOLLEN08

0 to 12

0 to 31

0 to 99

Duration (days)

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Time Clock Mode and Sub-Mode Directory (cont)

SUB-MODE

HD.09

ITEM

DISPLAY

ITEM DESCRIPTION

HOLIDAY SCHEDULE 09

Holiday Start Month

Start Day

CCN POINT

COMMENT

MON

DAY

LEN

HOLMON09

HOLDAY09

HOLLEN09

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 10

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON10

HOLDAY10

HOLLEN10

0 to 12

0 to 31

0 to 99

HD.10

HD.11

HD.12

HD.13

HD.14

HD.15

HD.16

HD.17

HD.18

HD.19

Duration (days)

HOLIDAY SCHEDULE 11

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON11

HOLDAY11

HOLLEN11

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 12

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON12

HOLDAY12

HOLLEN12

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 13

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON13

HOLDAY13

HOLLEN13

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 14

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON14

HOLDAY14

HOLLEN14

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 15

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON15

HOLDAY15

HOLLEN15

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 16

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON16

HOLDAY16

HOLLEN16

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 17

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON17

HOLDAY17

HOLLEN17

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 18

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON18

HOLDAY18

HOLLEN18

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 19

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON19

HOLDAY19

HOLLEN19

0 to 12

0 to 31

0 to 99

Duration (days)

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Time Clock Mode and Sub-Mode Directory (cont)

SUB-MODE

HD.20

ITEM

DISPLAY

ITEM DESCRIPTION

HOLIDAY SCHEDULE 20

Holiday Start Month

Start Day

CCN POINT

COMMENT

MON

DAY

LEN

HOLMON20

HOLDAY20

HOLLEN20

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 21

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON21

HOLDAY21

HOLLEN21

0 to 12

0 to 31

0 to 99

HD.21

HD.22

HD.23

HD.24

HD.25

HD.26

HD.27

HD.28

HD.29

HD.30

Duration (days)

HOLIDAY SCHEDULE 22

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON22

HOLDAY22

HOLLEN22

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 23

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON23

HOLDAY23

HOLLEN23

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 24

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON24

HOLDAY24

HOLLEN24

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 25

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON25

HOLDAY25

HOLLEN25

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 26

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON26

HOLDAY26

HOLLEN26

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 27

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON27

HOLDAY27

HOLLEN27

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 28

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON28

HOLDAY28

HOLLEN28

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 29

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON29

HOLDAY29

HOLLEN29

0 to 12

0 to 31

0 to 99

Duration (days)

HOLIDAY SCHEDULE 30

Holiday Start Month

Start Day

MON

DAY

LEN

HOLMON30

HOLDAY30

HOLLEN30

0 to 12

0 to 31

0 to 99

Duration (days)

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Time Clock Mode and Sub-Mode Directory (cont)

SUB-MODE

SCH.N

ITEM

DISPLAY

ITEM DESCRIPTION

Schedule Number 0

CCN POINT

SCHEDNUM

COMMENT

0 to 99

SCH.L

LOCAL OCCUPANCY SCHEDULE

OCCUPANCY PERIOD 1

Period Occupied Time

OCC.1

UNC.1

XX:XX

PER1OCC

PER1UNC

Period Unoccupied

Time

MON.1

TUE.1

WED.1

THU.1

FRI.1

SAT.1

SUN.1

HOL.1

NO/YES

Monday In Period

Tuesday In Period

Wednesday In Period

Thursday In Period

Friday In Period

Saturday In Period

Sunday In Period

Holiday In Period

PER1MON

PER1TUE

PER1WED

PER1THU

PER1FRI

PER1SAT

PER1SUN

PER1HOL

PER.1

PER.2

PER.3

PER.4

PER.5

OCCUPANCY PERIOD 2

Period Occupied Time

OCC.2

UNC.2

XX:XX

PER2OCC

PER2UNC

Period Unoccupied

Time

MON.2

TUE.2

WED.2

THU.2

FRI.2

SAT.2

SUN.2

HOL.2

NO/YES

Monday In Period

Tuesday In Period

Wednesday In Period

Thursday In Period

Friday In Period

Saturday In Period

Sunday In Period

Holiday In Period

PER2MON

PER2TUE

PER2WED

PER2THU

PER2FRI

PER2SAT

PER2SUN

PER2HOL

OCCUPANCY PERIOD 3

Period Occupied Time

OCC.3

UNC.3

XX:XX

PER3OCC

PER3UNC

Period Unoccupied

Time

MON.3

TUE.3

WED.3

THU.3

FRI.3

SAT.3

SUN.3

HOL.3

NO/YES

Monday In Period

Tuesday In Period

Wednesday In Period

Thursday In Period

Friday In Period

Saturday In Period

Sunday In Period

Holiday In Period

PER3MON

PER3TUE

PER3WED

PER3THU

PER3FRI

PER3SAT

PER3SUN

PER3HOL

OCCUPANCY PERIOD 4

Period Occupied Time

OCC.4

UNC.4

XX:XX

PER4OCC

PER4UNC

Period Unoccupied

Time

MON.4

TUE.4

WED.4

THU.4

FRI.4

SAT.4

SUN.4

HOL.4

NO/YES

Monday In Period

Tuesday In Period

Wednesday In Period

Thursday In Period

Friday In Period

Saturday In Period

Sunday In Period

Holiday In Period

PER4MON

PER4TUE

PER4WED

PER4THU

PER4FRI

PER4SAT

PER4SUN

PER4HOL

OCCUPANCY PERIOD 5

Period Occupied Time

OCC.5

UNC.5

XX:XX

PER5OCC

PER5UNC

Period Unoccupied

Time

MON.5

TUE.5

WED.5

THU.5

FRI.5

SAT.5

SUN.5

HOL.5

NO/YES

Monday In Period

Tuesday In Period

Wednesday In Period

Thursday In Period

Friday In Period

Saturday In Period

Sunday In Period

Holiday In Period

PER5MON

PER5TUE

PER5WED

PER5THU

PER5FRI

PER5SAT

PER5SUN

PER5HOL

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Time Clock Mode and Sub-Mode Directory (cont)

SUB-MODE

ITEM

DISPLAY

ITEM DESCRIPTION

OCCUPANCY PERIOD 6

Period Occupied Time

CCN POINT

COMMENT

OCC.6

UNC.6

XX:XX

PER6OCC

PER6UNC

Period Unoccupied

Time

MON.6

TUE.6

WED.6

THU.6

FRI.6

SAT.6

SUN.6

HOL.6

NO/YES

Monday In Period

Tuesday In Period

Wednesday In Period

Thursday In Period

Friday In Period

Saturday In Period

Sunday In Period

Holiday In Period

PER6MON

PER6TUE

PER6WED

PER6THU

PER6FRI

PER6SAT

PER6SUN

PER6HOL

PER.6

OCCUPANCY PERIOD 7

Period Occupied Time

OCC.7

UNC.7

XX:XX

PER7OCC

PER7UNC

Period Unoccupied

Time

MON.7

TUE.7

WED.7

THU.7

FRI.7

SAT.7

SUN.7

HOL.7

NO/YES

Monday In Period

Tuesday In Period

Wednesday In Period

Thursday In Period

Friday In Period

Saturday In Period

Sunday In Period

Holiday In Period

PER7MON

PER7TUE

PER7WED

PER7THU

PER7FRI

PER7SAT

PER7SUN

PER7HOL

PER.7

OCCUPANCY PERIOD 8

Period Occupied Time

OCC.8

UNC.8

XX:XX

PER8OCC

PER8UNC

Period Unoccupied

Time

MON.8

TUE.8

WED.8

THU.8

FRI.8

SAT.8

SUN.8

HOL.8

NO/YES

Monday In Period

Tuesday In Period

Wednesday In Period

Thursday In Period

Friday In Period

Saturday In Period

Sunday In Period

Holiday In Period

PER8MON

PER8TUE

PER8WED

PER8THU

PER8FRI

PER8SAT

PER8SUN

PER8HOL

PER.8

SCHEDULE OVERRIDE

Timed Override Hours

Override Time Limit

Timed Override

OVR.T

OVR.L

T.OVR

OVR_EXT

OTL

TIMEOVER

0 to 4 hours

OVR

NO/YES

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Operating Mode and Sub-Mode Directory

SUB-MODE

ITEM

DISPLAY

ITEM DESCRIPTION

MODES CONTROLLING UNIT

FSM controlling Chiller

WSM controlling Chiller

Master/Slave control

Ramp Load Limited

Timed Override in effect

Low Cooler Suction TempA

Slow Change Override

Minimum OFF time active

Dual Setpoint

Temperature Reset

Demand Limited

Cooler Freeze Protection

Low Temperature Cooling

High Temperature Cooling

Making ICE

CCN POINT

COMMENT

MD01

MD02

MD03

MD05

MD06

MD07

MD09

MD10

MD13

MD14

MD15

MD16

MD17

MD18

MD19

MD20

MD21

MD23

MD24

OFF/ON

MODE_1

MODE_2

MODE_3

MODE_5

MODE_6

MODE_7

MODE_9

MODE_10

MODE_13

MODE_14

MODE_15

MODE_16

MODE_17

MODE_18

MODE_19

MODE_20

MODE_21

MODE_23

MODE_24

MODE

Storing ICE

High SCT Circuit A

Minimum Comp. On Time

Pump Off Delay Time

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APPENDIX A — LOCAL DISPLAY TABLES (cont)

Alarms Mode and Sub-Mode Directory

SUB-MODE

ITEM

DISPLAY

ITEM DESCRIPTION

CCN POINT

COMMENT

CURRENTLY ACTIVE ALARMS

AA01

AA02

AA03

AA04

AA05

AA06

AA07

AA08

AA09

AA10

AA11

AA12

AA13

AA14

AA15

AA16

AA17

AA18

AA19

AA20

AA21

AA22

AA23

AA24

AA25

AXXX

TXXX

PXXX

Alarms are shown as

AXXX

Alerts are shown as TXXX

CRNT

Current Alarms 1-25

RCRN

NO/YES

Reset All Current Alarms

ALARM HISTORY

ALRESET

AL01

AL02

AL03

AL04

AL05

AL06

AL07

AL08

AL09

AL10

AL11

AL12

AL13

AL14

AL15

AL16

AL17

AL18

AL19

AL20

AXXX

TXXX

PXXX

Alarms are shown as

AXXX

Alerts are shown as TXXX

HIST

Alarm History 1-20

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APPENDIX B — CCN TABLES

CCN DISPLAY TABLES — A_UNIT (General Unit Parameters

DESCRIPTION

Control Mode

Occupied

CCN Chiller

Alarm State

Active Demand Limit

Override Modes in Effect

Percent Total Capacity

Requested Stage

Active Setpoint

VALUE

10-char ASCII

No/Yes

Stop/Start

6-char ASCII

NNN

No/Yes

NNN

NNN.n

Enable/EMStop

5-char ASCII

UNITS

POINT NAME

STAT

OCC

CHIL_S_S

ALM

DEM_LIM

MODE

CAP_T

STAGE

CTRL_PNT

EWT

LWT

FORCIBLE

degF

Control Point

Entering Fluid Temp

Leaving Fluid Temp

Emergency Stop

Minutes Left for Start

PUMPS

EMSTOP

MIN_LEFT

Cooler Pump Relay

Condenser Pump

Cooler Flow Switch

Off/On

COOLPUMP

CONDPUMP

COOLFLOW

CCN DISPLAY TABLES — CIRCA_AN (Circuit A Analog Parameters)

DESCRIPTION

CIRCUIT A ANALOG VALUES

Percent Total Capacity

Percent Available Cap.

Discharge Pressure

VALUE

UNITS

POINT NAME

FORCIBLE

NNN

CAPA_T

CAPA_A

DP_A

SP_A

HSP

TMP_SCTA

TMP_SSTA

TMP_RGTA

DISGAS

SH_A

NNN.n

PSIG

degF

deltaF

Suction Pressure

Head Setpoint

Saturated Condensing Tmp

Saturated Suction Temp

Compr Return Gas Temp

Discharge Gas Temp

Suction Superheat Temp

CCN DISPLAY TABLES — CIRCADIO (Circuit A Discrete Inputs/Outputs)

DESCRIPTION

CIRC. A DISCRETE OUTPUTS

Compressor A1 Relay

Compressor A2 Relay

Compressor A3 Relay

VALUE

UNITS

POINT NAME

FORCIBLE

Off/On

K_A1_RLY

K_A2_RLY

K_A3_RLY

MLV_RLY

Off/On

Minimum Load Valve Relay

CIRC. A DISCRETE INPUTS

Compressor A1 Feedback

Compressor A2 Feedback

Compressor A3 Feedback

Off/On

K_A1_FBK

K_A2_FBK

K_A3_FBK

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APPENDIX B — CCN TABLES (cont)

CCN DISPLAY TABLES — OPTIONS (Unit Parameters)

DESCRIPTION

UNIT ANALOG VALUES

Cooler Entering Fluid

VALUE

UNITS

POINT NAME

FORCIBLE

NNN.n

degF

COOL_EWT

COOL_LWT

COND_EWT

COND_LWT

DUAL_LWT

Cooler Leaving Fluid

NNN.n

degF

Condenser Entering Fluid

Condenser Leaving Fluid

Lead/Lag Leaving Fluid

TEMPERATURE RESET

4-20 ma Reset Signal

Outside Air Temperature

Space Temperature

NN.n

NNN.n

milliAmps

degF

RST_MA

OAT

SPT

DEMAND LIMIT

4-20 ma Demand Signal

Demand Limit Switch 1

Demand Limit Switch 2

CCN Loadshed Signal

NN.n

Off/On

milliAmps

LMT_MA

DMD_SW1

DMD_SW2

DL_STAT

MISCELLANEOUS

Dual Setpoint Switch

Cooler LWT Setpoint

Ice Done

Off/On

NNN.n

Off/On

DUAL_IN

LWT_SP

ICE_DONE

degF

CCN MAINTENANCE TABLES — STRTHOUR

DESCRIPTION

Machine Operating Hours

Machine Starts

VALUE

NNNNNN

UNITS

hours

POINT NAME

HR_MACH

CY_MACH

Compressor A1 Run Hours

Compressor A2 Run Hours

Compressor A3 Run Hours

NNNNNN.n

hours

HR_A1

HR_A2

HR_A3

Compressor A1 Starts

Compressor A2 Starts

Compressor A3 Starts

NNNNNN

CY_A1

CY_A2

CY_A3

PUMP HOURS

Cooler Pump Run Hours

Condenser Pump Run Hours

NNNNNN.n

hours

HR_CPUMP

HR_DPUMP

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APPENDIX B — CCN TABLES (cont)

CCN MAINTENANCE TABLES — CURRMODS

DESCRIPTION

CSM controlling Chiller

VALUE

Off/On

POINT NAME

MODE_1

MODE_2

MODE_3

MODE_5

MODE_6

MODE_7

MODE_9

MODE_10

MODE_13

MODE_14

MODE_15

MODE_16

MODE_17

MODE_18

MODE_19

MODE_20

MODE_21

MODE_23

MODE_24

MODE_25

WSM controlling Chiller

Master/Slave control

Ramp Load Limited

Timed Override in effect

Low Cooler Suction TempA

Slow Change Override

Minimum OFF time active

Dual Setpoint

Temperature Reset

Demand Limited

Cooler Freeze Protection

Low Temperature Cooling

High Temperature Cooling

Making ICE

Storing ICE

High SCT Circuit A

Minimum Comp. On Time

Pump Off Delay Time

Low Sound Mode

Off/On

CCN MAINTENANCE TABLES — ALARMS

DESCRIPTION

Active Alarm #1

Active Alarm #2

Active Alarm #3

Active Alarm #4

Active Alarm #5

Active Alarm #6

Active Alarm #7

Active Alarm #8

Active Alarm #9

Active Alarm #10

Active Alarm #11

Active Alarm #12

Active Alarm #13

Active Alarm #14

Active Alarm #15

Active Alarm #16

Active Alarm #17

Active Alarm #18

Active Alarm #19

Active Alarm #20

Active Alarm #21

Active Alarm #22

Active Alarm #23

Active Alarm #24

Active Alarm #25

VALUE

4-char ASCII

POINT NAME

ALARM01C

ALARM02C

ALARM03C

ALARM04C

ALARM05C

ALARM06C

ALARM07C

ALARM08C

ALARM09C

ALARM10C

ALARM11C

ALARM12C

ALARM13C

ALARM14C

ALARM15C

ALARM16C

ALARM17C

ALARM18C

ALARM19C

ALARM20C

ALARM21C

ALARM22C

ALARM23C

ALARM24C

ALARM25C

CCN MAINTENANCE TABLES — VERSIONS

DESCRIPTION

VERSION

CESR131333-

CESR131279-

CESR131174-

CESR131171-

CESR130227-

VALUE

AUX

MBB

EMM

MARQUEE

NAVIGATOR

5-char ASCII

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APPENDIX B — CCN TABLES (cont)

CCN MAINTENANCE TABLES — LOADFACT

DESCRIPTION

CAPACITY CONTROL

Load/Unload Factor

Control Point

Entering Fluid Temp

Leaving Fluid Temp

VALUE

UNITS

POINT NAME

SMZ

CTRL_PNT

EWT

NNN

NNN.n

degF

LWT

Ramp Load Limited

Off/On

MODE_5

MODE_9

MODE_16

MODE_17

MODE_18

MODE_23

Slow Change Override

Cooler Freeze Protection

Low Temperature Cooling

High Temperature Cooling

Minimum Comp. On Time

CCN MAINTENANCE TABLES — LEARNFNS

DESCRIPTION

SCT Delta for Comp A1

SCT Delta for Comp A2

SCT Delta for Comp A3

SAGP for Compressor A1

SAGM for Compressor A1

SAGP for Compressor A2

SAGM for Compressor A2

SAGP for Compressor A3

SAGM for Compressor A3

Reset short loop gain

VALUE

NNN.n

Yes/No

UNITS

deltaF

POINT NAME

A1SCTDT

A2SCTDT

A3SCTDT

SAGA1P

SAGA1M

SAGA2P

SAGA2M

SAGA3P

SAGA3M

RESET_GN

CCN MAINTENANCE TABLES — PM-STRN

DESCRIPTION

Strainer Srvc Interval

Strainer Srvc Countdown

Strainer Maint. Done

VALUE

NNNNN

No/Yes

UNITS

hours

POINT NAME

SI_STRNR

ST_CDOWN

ST_MAINT

Strainer Maint. Date

15-char ASCII

STRN_PM0

STRN_PM1

STRN_PM2

STRN_PM3

STRN_PM4

CCN MAINTENANCE TABLES — TESTMODE

DESCRIPTION

Service Test Mode

Compressor A1 Relay

Compressor A2 Relay

Compressor A3 Relay

Cooler Pump Relay

Condenser Pump

Comp A1 Unload Time

Remote Alarm Relay

VALUE

Off/On

UNITS

POINT NAME

NET_CTRL

S_A1_RLY

S_A2_RLY

S_A3_RLY

S_CLPMP

S_CNDPMP

S_A1ULTM

S_ALM

secs

Off/On

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APPENDIX B — CCN TABLES (cont)

CCN MAINTENANCE TABLES — RUNTEST

DESCRIPTION

Percent Total Capacity

VALUE

NNN

UNITS

POINT NAME

CAPA_T

Percent Available Cap.

Discharge Pressure

Suction Pressure

NNN

CAPA_A

DP_A

SP_A

TMP_SCTA

TMP_SSTA

TMP_RGTA

DISGAS

NNN.n

Off/On

PSIG

degF

Saturated Condensing Tmp

Saturated Suction Temp

Compr Return Gas Temp

Discharge Gas Temp

Suction Superheat Temp

Compressor A1 Relay

Compressor A2 Relay

Compressor A3 Relay

Minimum Load Valve Relay

Compressor A1 Feedback

Compressor A2 Feedback

Compressor A3 Feedback

deltaF

SH_A

K_A1_RLY

K_A2_RLY

K_A3_RLY

MLV_RLY

K_A1_FBK

K_A2_FBK

K_A3_FBK

Outside Air Temperature

Space Temperature

Cooler Pump Relay

Condenser Pump

Cooler Entering Fluid

Cooler Leaving Fluid

Cooler Flow Switch

NNN.n

Off/On

NNN.n

Off/On

degF

OAT

SPT

COOLPUMP

CONDPUMP

COOL_EWT

COOL_LWT

COOLFLOW

degF

CCN MAINTENANCE TABLES — DUALCHIL

DESCRIPTION

Dual Chiller Link Good?

Master Chiller Role

Slave Chiller Role

Lead Chiller Ctrl Point

Lag Chiller Ctrl Point

Control Point

VALUE

No/Yes

12-char ASCII

NNN.n

UNITS

POINT NAME

DC_LINK

MC_ROLE

SC_ROLE

LEAD_CP

LAG_CP

degF

NNN.n

CTRL_PNT

Cool EnteringFluid-Slave

Cool Leaving Fluid-Slave

Cooler Entering Fluid

Cooler Leaving Fluid

NNN.n

degF

COOLEWTS

COOLLWTS

COOL_EWT

COOL_LWT

DUAL_LWT

Lead/Lag Leaving Fluid

Percent Avail.Capacity

Percent Avail.Cap.Slave

NNN

CAP_A

CAP_A_S

Lag Start Delay Time

Load/Unload Factor

5-char ASCII

NNN

LAGDELAY

SMZ

Load/Unload Factor-Slave

Lead SMZ Clear Commanded

Lag SMZ Clear Commanded

Lag Commanded Off?

NNNN

SMZSLAVE

LEADSMZC

LAG_SMZC

LAG_OFF

No/Yes

Dual Chill Lead CapLimit

Dual Chill Lag CapLimit

NNN.n

DCLDCAPL

DCLGCAPL

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APPENDIX B — CCN TABLES (cont)

CCN CONFIGURATION TABLES — UNIT (Unit Configuration)

DESCRIPTION

VALUE

DEFAULT

UNITS

POINT NAME

UNIT_TYP

SIZE

SIZE_A1

SIZE_A2

SIZE_A3

SH_SP

Unit Type

Unit Size

NNN

NN.n

tons

deltaF

Compressor A1 Size

Compressor A2 Size

Compressor A3 Size

Suction Superheat Setpt

Compressor A1 Digital?

Maximum A1 Unload Time

No/Yes

CPA1TYPE

MAXULTME

secs

CCN CONFIGURATION TABLES — OPTIONS1 (Options 1 Configuration)

DESCRIPTION

Cooler Fluid

Minimum Load Vlv Select

Return Gas Sensor Enable

Enable OAT Sensor

Dischrge Gas Temp Enable

CSB Boards Enable

Reverse Rotation Enable

Cooler Pump Control

VALUE

DEFAULT

UNITS

POINT NAME

FLUIDTYP

MLV_FLG

RGT_ENA

OAT_ENA

DISGASEN

CSB_ENA

REVR_ENA

CPC

No/Yes

Dsable/Enable

Off/On

Cooler Pump Shutdown Dly

EMM Module Installed

Enable Condenser Pump

Enable Cond Wtr Sensors

Enable Cond Flow Switch

No/Yes

Dsable/Enable

mins

PUMP_DLY

EMM_BRD

CONDPMPE

CONDWTRS

CONDFLSW

CCN CONFIGURATION TABLES — OPTIONS2 (Options 2 Configuration)

DESCRIPTION

Control Method

Loading Sequence Select

Lead/Lag Circuit Select

Cooling Setpoint Select

Ramp Load Select

VALUE

DEFAULT

UNITS

POINT NAME

CONTROL

SEQ_TYPE

LEAD_TYP

CLSP_TYP

RAMP_EBL

LCW_LMT

DELAY

Dsable/Enable

NN.n

High LCW Alert Limit

Minutes off time

deltaF

mins

Deadband Multiplier

Ice Mode Enable

N.n

Z_GAIN

ICE_CNFG

Dsable/Enable

CCN CONFIGURATION TABLES — SCHEDOVR (Timed Override Setup)

DESCRIPTION

Schedule Number

Override Time Limit

Timed Override Hours

Timed Override

VALUE

DEFAULT

UNITS

POINT NAME

SCHEDNUM

OTL

OVR_EXT

TIMEOVER

hours

No/Yes

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APPENDIX B — CCN TABLES (cont)

CCN CONFIGURATION TABLES — RESETCON (Temperature Reset and Demand Limit)

DESCRIPTION

COOLING RESET

Cooling Reset Type

4-20 MA RESET

VALUE

DEFAULT

UNITS

POINT NAME

CRST_TYP

420_DEG

4-20 - Degrees Reset

NNN.n

deltaF

REMOTE RESET

Remote - No Reset Temp

Remote - Full Reset Temp

Remote - Degrees Reset

NNN.n

degF

deltaF

REM_NO

REM_FULL

REM_DEG

RETURN TEMPERATURE RESET

Return - No Reset Temp

Return - Full Reset Temp

Return - Degrees Reset

NNN.n

deltaF

RTN_NO

RTN_FULL

RTN_DEG

DEMAND LIMIT

Demand Limit Select

Demand Limit at 20 mA

Loadshed Group Number

Loadshed Demand Delta

Maximum Loadshed Time

Demand Limit Switch 1

Demand Limit Switch 2

NNN

DMD_CTRL

DMT20MA

SHED_NUM

SHED_DEL

SHED_TIM

DLSWSP1

DLSWSP2

mins

NNN

CCN CONFIGURATION TABLES — DUALCHIL (Dual Chiller Configuration Settings)

DESCRIPTION

LEAD/LAG

VALUE

DEFAULT

UNITS

POINT NAME

Lead/Lag Chiller Enable

Master/Slave Select

Slave Address

Lead/Lag Balance Select

Lead/Lag Balance Delta

Lag Start Delay

Dsable/Enable

Master/Slave

NNN

LL_ENA

MS_SEL

SLV_ADDR

LL_BAL

LL_BAL_D

LL_DELAY

PARALLEL

hours

mins

No/Yes

Parallel Configuration

CCN CONFIGURATION TABLES — DISPLAY (Marquee Display SETUP)

DESCRIPTION

Service Password

Password Enable

Metric Display

VALUE

NNNN

Dsable/Enable

Off/On

DEFAULT

UNITS

POINT NAME

PASSWORD

PASS_EBL

DISPUNIT

Language Selection

LANGUAGE

CCN CONFIGURATION TABLES — HPA

DESCRIPTION

SCT Delta for Comp A1

SCT Delta for Comp A2

VALUE

NNN.n

DEFAULT

UNITS

deltaF

POINT NAME

A1SCTDT

A2SCTDT

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APPENDIX B — CCN TABLES (cont)

CCN SERVICE TABLES — SERVICE

DESCRIPTION

SERVICE

VALUE

DEFAULT

UNITS

POINT NAME

Brine Freeze Point

NNN.n

degF

BRN_FRZ

COMPRESSOR ENABLE

Enable Compressor A1

Enable Compressor A2

Enable Compressor A3

Dsable/Enable

ENABLEA1

ENABLEA2

ENABLEA3

CCN SETPOINT TABLES — SETPOINT

DESCRIPTION

COOLING

VALUE

DEFAULT

UNITS

POINT NAME

Cooling Setpoint 1

Cooling Setpoint 2

ICE Setpoint

NNN.n

degF

CSP1

CSP2

CSP3

RAMP LOADING

Cooling Ramp Loading

N.n

CRAMP

Brine Freeze Point

NNN.n

degF

BRN_FRZ

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53300053-01 Printed in U.S.A. Form 30MP-1T Pg 72 1-10 Replaces: New

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START-UP CHECKLIST FOR 30MP LIQUID CHILLER

(Remove and use for job file.)

A. Preliminary Information

JOB NAME _______________________________________________________________________________

LOCATION _______________________________________________________________________________

INSTALLING CONTRACTOR _________________________________________________________________

DISTRIBUTOR ____________________________________________________________________________

START-UP PERFORMED BY _________________________________________________________________

EQUIPMENT: Chiller:

COMPRESSORS:

MODEL NO.

SERIAL NO.

CIRCUIT A

MODEL NO.

SERIAL NO.

B. Preliminary Equipment Check (Yes or No)

IS THERE ANY SHIPPING DAMAGE?

IF SO, WHERE

_________________________________________________________________________________________

WILL THIS DAMAGE PREVENT UNIT START-UP?

CHECK POWER SUPPLY. DOES IT AGREE WITH UNIT?

HAS THE CIRCUIT PROTECTION BEEN SIZED AND INSTALLED PROPERLY? (refer to Installation Instructions)

ARE THE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY? (refer to Installation Instructions)

HAS THE GROUND WIRE BEEN CONNECTED?

ARE ALL ELECTRICAL TERMINALS TIGHT?

ON BRINE UNITS, HAS THE COOLER FLUID BEEN PROPERLY PROTECTED FROM FREEZING TO AT

LEAST 15° F (8.3° C) BELOW THE LOWEST ANTICIPATED LEAVING FLUID TEMPERATURE SET POINT?

HAVE THE MAIN BASE BOARD, ENERGY MANAGEMENT MODULE (OPTION) AND CONTROL RELAY

CONNECTIONS BEEN CHECK FOR TIGHTNESS?

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53300053-01

Printed in U.S.A.

Form 30MP-1T

Pg CL-1

1-10

Replaces: New

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C. Unit Start-Up (insert check mark as each item is completed)

 CHILLER HAS BEEN PROPERLY INTERLOCKED WITH THE AUXILIARY CONTACTS OF THE CHILLED

FLUID PUMP STARTER.

 CHILLER HAS BEEN PROPERLY INTERLOCKED WITH THE AUXILIARY CONTACTS OF THE

CONDENSER WATER PUMP STARTER.

 CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR A MINIMUM OF 24 HOURS PRIOR TO START-UP.

(30MPA UNITS ONLY)

 COMPRESSOR OIL LEVEL IS CORRECT.

 LIQUID LINE SERVICE VALVE IS BACKSEATED (30MPA UNITS ONLY).

 SET POINT SHOULD BE ADJUSTED TO THE DESIRED COOLER LEAVING FLUID TEMPERATURE.

(refer to installation instructions).

 LEAK CHECK THOROUGHLY: CHECK ALL COMPRESSORS, CONDENSER MANIFOLDS AND HEADERS,

TXVs, SOLENOID VALVES, FILTER DRIERS, FUSIBLE PLUGS, THERMISTORS, AND COOLER CONNEC-

TIONS USING ELECTRONIC LEAK DETECTOR.

 LOCATE, REPAIR, AND REPORT ANY REFRIGERANT LEAKS.

 CHECK VOLTAGE IMBALANCE:

AB + AC + BC (divided by 3) = AVERAGE VOLTAGE =

MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =

(MAX. DEVIATION)

VOLTAGE IMBALANCE =

x 100 =

% VOLTAGE IMBALANCE

AVERAGE VOLTAGE

IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START CHILLER!

CALL LOCAL POWER COMPANY FOR ASSISTANCE.

 INCOMING POWER VOLTAGE TO CHILLER MODULES IS WITHIN RATED UNIT VOLTAGE

RANGE.

SYSTEM FLUID VOLUME IN LOOP:

GAL (L)

REFER TO INSTALLATION INSTRUCTIONS FOR MINIMUM FLUID VOLUME

CL-2

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C. Unit Start-Up (cont)

CHECK PRESSURE DROP ACROSS COOLER.

FLUID ENTERING COOLER:

FLUID LEAVING COOLER:

PSIG (kPa)

(PSIG DIFFERENCE) x 2.31 = FT OF FLUID PRESSURE DROP =

PLOT COOLER PRESSURE DROP ON PERFORMANCE DATA CHART (LOCATED IN INSTALLATION

INSTRUCTIONS LITERATURE) TO DETERMINE TOTAL GPM (L/s).

TOTAL GPM (L/s) =

UNIT’S RATED MIN GPM (L/s) =

JOB’S SPECIFIED GPM (L/s) (if available):

NOTE: IF UNIT HAS LOW FLUID FLOW, FIND SOURCE OF PROBLEM: CHECK FLUID PIPING, IN-LINE

FLUID STRAINER, SHUT-OFF VALVES, CWP ROTATION, ETC.

COOLER LOOP FREEZE PROTECTION IF REQUIRED:

GALLONS (LITERS) ADDED:

PIPING INCLUDES ELECTRIC TAPE HEATERS IF PIPNG IS EXPOSED TO TEMPERATURES

BELOW FREEZING (Y/N):

COOLER/CONDENSER PROTECTION:

IN-LINE MINIMUM 40-MESH STRAINER INSTALLED WITHIN 10 FT OF THE COOLER/CONDENSER

WATER INLET.

COOLER: YES

CONDENSER: YES

VISUALLY CHECK MAIN BASE BOARD FOR THE FOLLOWING:

 INSPECT ALL THERMISTORS AND TRANSDUCERS FOR POSSIBLE CROSSED WIRES.

 CHECK TO BE SURE ALL WELL-TYPE THERMISTORS ARE FULLY INSERTED INTO THEIR

RESPECTIVE WELLS.

TO START THE CHILLER:

TURN THE EMERGENCY ON/OFF SWITCH (SW2) TO ON POSITION.

TURN THE ENABLE/OFF/REMOTE CONTACT SWITCH (SW1) TO THE ENABLE POSITION.

IF EQUIPPED WITH THE OPTIONAL SCROLLING MARQUEE, LEAVE THE ENABLE/OFF/REMOTE CONTACT

SWITCH (SW1) IN THE OFF POSITION.

NOTE: USE ESCAPE KEY TO GO UP ONE LEVEL IN THE STRUCTURE.

USE ARROW/ESCAPE KEYS TO ILLUMINATE RUN STATUS LED. PRESS ENTER KEY UNTIL

‘VERS’ IS DISPLAYED. PRESS ENTER KEY. RECORD INFORMATION ON THE FOLLOWING PAGE.

CL-3

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C. Unit Start-Up (cont)

Record Software Versions

MODE — RUN STATUS

SOFTWARE VERSION NUMBERS

CESR131333-xx-xx

AUX

MBB

CESR131279-xx-xx

CESR131174-xx-xx

CESR131171-xx-xx

CESR130227-xx-xx

VERS

EMM

MARQ

NAVI

(PRESS ENTER AND ESCAPE SIMULTANEOUSLY TO OBTAIN SOFTWARE VERSIONS)

USE ARROW/ESCAPE KEYS TO ILLUMINATE CONFIGURATION LED. PRESS ENTER KEY. RECORD

INFORMATION BELOW.

UNIT (Configuration Settings)

SUBMODE

UNIT

ITEM

ITEM EXPANSION

UNIT CONFIGURATION

UNIT SIZE

DISPLAY

ENTRY

SIZE

SZA.1

SZA.2

SZA.3

A1.TY

MAX.T

XXX

NO/YES

COMPRESSOR A1 SIZE

COMPRESSOR A2 SIZE

COMPRESSOR A3 SIZE

COMPRESSOR A1 DIGITAL?

MAXIMUM A1 UNLOAD TIME

PRESS ESCAPE KEY TO DISPLAY ‘UNIT’. PRESS DOWN ARROW KEY TO DISPLAY ‘OPT1’.

PRESS ENTER KEY. RECORD CONFIGURATION INFORMATION BELOW:

OPTIONS1 (Options Configuration)

SUBMODE

ITEM

ITEM EXPANSION

UNIT OPTIONS 1 HARDWARE

COOLER FLUID

MINIMUM LOAD VALVE SELECT

RETURN GAS SENSOR ENABLE

ENABLE OAT SENSOR

DISPLAY

ENTRY

FLUD

MLV.S

RG.EN

OAT.E

D.G.EN

CSB.E

CPC

PM.DY

DPME

DFLS

NO/YES

ENBL/DSBL

ON/OFF

DISCHRGE GAS TEMP ENABLE

CSB BOARDS ENABLE

OPT1

COOLER PUMP CONTROL

COOLER PUMP SHUTDOWN DLY

ENABLE CONDENSER PUMP

ENABLE COND FLOW SWITCH

ENABLE COND WTR SENSORS

XX MIN

ENBL/DSBL

CDWS

PRESS ESCAPE KEY TO DISPLAY ‘OPT1’. PRESS DOWN ARROW KEY TO DISPLAY ‘OPT2’.

PRESS ENTER KEY.

RECORD CONFIGURATION INFORMATION ON NEXT PAGE.

CL-4

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C. Unit Start-Up (cont)

OPTIONS2 (Options Configuration)

SUBMODE

OPT2

ITEM

ITEM EXPANSION

UNIT OPTIONS 2 CONTROLS

CONTROL METHOD

HIGH LCW ALERT LIMIT

MINUTES OFF TIME

DISPLAY

ENTRY

CTRL

LCWT

DELY

ICE.M

XX.X F

ENBL/DSBL

ICE MODE ENABLE

PRESS ESCAPE KEY TO DISPLAY ‘OPT2’. PRESS DOWN ARROW KEY TO DISPLAY ‘CCN’.

PRESS ENTER KEY.

RECORD CONFIGURATION INFORMATION BELOW.

CCN (CCN Network Configuration)

SUB-MODE

CCN

ITEM

CCNA

CCNB

BAUD

ITEM EXPANSION

CCN ADDRESS

DISPLAY

XXX

ENTRY

CCN BUS NUMBER

CCN BAUD RATE

XXX

PRESS ESCAPE KEY SEVERAL TIMES TO GET TO THE MODE LEVEL (BLANK DISPLAY). USE THE

ARROW KEYS TO SCROLL TO THE SET POINT LED. PRESS ENTER TO DISPLAY SETPOINTS.

RECORD CONFIGURATION INFORMATION BELOW:

SETPOINT

SUBMODE

COOL

ITEM

ITEM EXPANSION

COOLING SETPOINTS

COOLING SETPOINT 1

COOLING SETPOINT 2

ICE SETPOINT

DISPLAY

ENTRY

CSP.1

CSP.2

CSP.3

XXX.X °F

HEAD PRESSURE SETPOINTS

HEAD SET POINT

BRINE FREEZE SETPOINT

BRINE FREEZE POINT

HEAD

FRZ

H.DP

XXX.X °F

BR.FZ

COMPONENT TEST

USE ESCAPE/ARROW KEYS TO ILLUMINATE CONFIGURATION LED. PRESS ENTER TO DISPLAY ‘DISP’.

PRESS ENTER AGAIN TO DISPLAY ‘TEST’ FOLLOWED BY ‘OFF’. PRESS ENTER TO STOP DISPLAY AT

‘OFF’ AND ENTER AGAIN SO ‘OFF’ DISPLAY FLASHES. ‘PASS’ AND ‘WORD’ WILL FLASH IF PASSWORD

NEEDS TO BE ENTERED. PRESS ENTER TO DISPLAY PASSWORD FIELD AND USE THE ENTER KEY FOR

EACH OF THE FOUR PASSWORD DIGITS. USE ARROW KEYS IF PASSWORD IS OTHER THAN STANDARD.

AT FLASHING ‘OFF’ DISPLAY, PRESS THE UP ARROW KEY TO DISPLAY ‘ON’ AND PRESS ENTER. ALL LED

SEGMENTS AND MODE LEDS WILL LIGHT UP. PRESS ESCAPE TO STOP THE TEST. PRESS ESCAPE TO

RETURN TO THE ‘DISP’ DISPLAY. PRESS THE ESCAPE KEY AGAIN AND USE THE ARROW KEYS TO ILLU-

MINATE THE SERVICE TEST LED. PRESS ENTER TO DISPLAY ‘TEST’. PRESS ENTER TO STOP DISPLAY

AT ‘OFF’ AND ENTER AGAIN SO ‘OFF’ FLASHES. PRESS THE UP ARROW KEY AND ENTER TO ENABLE

THE MANUAL MODE. PRESS ESCAPE AND DISPLAY NOW SAYS ‘TEST’ ‘ON’. TURN SWITCH (SW1) TO

THE ENABLE POSITION.

PRESS THE DOWN ARROW TO DISPLAY ‘OUTS’. PRESS THE ENTER KEY TO DISPLAY ‘LL.SV’. PRESS

THE ENTER KEY TO STOP DISPLAY AT ‘OFF’ AND ENTER AGAIN SO ‘OFF’ FLASHES. PRESS THE UP

ARROW KEY AND ENTER TO TURN THE OUTPUT ON. PRESS ENTER SO THE ‘ON’ DISPLAY FLASHES,

PRESS THE DOWN ARROW KEY AND THEN ENTER TO TURN THE OUTPUT OFF. OUTPUTS WILL ALSO BE

TURNED OFF OR SENT TO 0% WHEN ANOTHER OUTPUT IS TURNED ON. CHECK OFF THE ITEMS IN THE

SERVICE TEST TABLE ON THE NEXT PAGE THAT APPLY AFTER BEING TESTED.

CL-5

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C. Unit Start-Up (cont)

USE ESCAPE KEY TO RETURN TO ‘OUTS’ DISPLAY. PRESS DOWN ARROW TO DISPLAY ‘CMPA’.

PRESS ENTER KEY TO DISPLAY ‘CC.A1’. NOTE THAT UNLOADERS AND HOT GAS BYPASS SOLENOIDS

CAN BE TESTED BOTH WITH AND WITHOUT COMPRESSOR(S) RUNNING. MAKE SURE ALL SERVICE

VALVES ARE OPEN AND COOLER/CONDENSER PUMPS HAVE BEEN TURNED ON BEFORE STARTING

COMPRESSORS. CHECK OFF EACH ITEM AFTER SUCCESSFUL TEST. THE CONTROL WILL ONLY START

ONE COMPRESSOR PER MINUTE. WHEN AT THE DESIRED ITEM, PRESS THE ENTER KEY TWICE TO

MAKE THE ‘OFF’ FLASH. PRESS THE UP ARROW KEY AND ENTER TO TURN THE OUTPUT ON. CHECK

OFF THE ITEMS IN THE SERVICE TEST TABLE BELOW THAT APPLY AFTER BEING TESTED.

SERVICE TEST

KEYPAD

ENTRY

ITEM

Completed

(Yes/No)

SUB-MODE

TEST

ITEM DISPLAY

COMMENT

EXPANSION

ON/OFF

SERVICE TEST MODE

To Enable Service Test Mode,

move Enable/Off/Remote

Contact switch to OFF. Change

TEST to ON. Move switch to

ENABLE.

ENTER

OUTPUTS AND PUMPS

COOLER PUMP RELAY

ENTER

CLR.P ON/OFF

CND.P ON/OFF

UL.TM 0 TO 15

CONDENSER PUMP

COMP A1 UNLOAD TIME

CRANKCASE HEATER

CC.H

ON/OFF

OUTS

CW.VO ON/OFF

CW.VC ON/OFF

LL.SV ON/OFF

RMT.A ON/OFF

CONDENSER VALVE OPEN

CONDENSER VALVE CLOSE

LIQUID LINE SOLENOID

REMOTE ALARM RELAY

CIRCUIT A COMPRESSOR TEST

COMPRESSOR A1 RELAY

ENTER

CC.A1 ON/OFF

UL.TM 0 TO 15

CC.A2 ON/OFF

CC.A3 ON/OFF

COMP A1 UNLOAD TIME

COMPRESSOR A2 RELAY

COMPRESSOR A3 RELAY

MINIMUM LOAD VALVE RELAY

CMPA

MLV

ON/OFF

USE ARROW/ESCAPE KEYS TO ILLUMINATE THE TEMPERATURES LED. PRESS ENTER TO DISPLAY

‘UNIT’. PRESS ENTER AND USE THE ARROW KEYS TO RECORD TEMPERATURES FOR

SENSORS BELOW.

TEMPERATURE

CLWT

CEWT

CDET

CDLT

OAT or DLWT

SPT

CL-6

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C. Unit Start-Up (cont)

ALL UNITS:

MEASURE THE FOLLOWING (MEASURE WHILE MACHINE IS IN A STABLE OPERATING CONDITION):

CIRCUIT A

DISCHARGE PRESSURE

SUCTION PRESSURE

DISCHARGE LINE TEMP

SUCTION LINE TEMP

SATURATED COND TEMP

COOLER ENTERING FLUID

COOLER LEAVING FLUID

CONDENSER ENTERING FLUID

CONDENSER LEAVING FLUID

CHECK AND ADJUST SUPERHEAT AS REQUIRED.

CL-7

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C. Unit Start-Up (cont)

COMMENTS:

_________________________________________________________________________________________

SIGNATURES:

START-UP TECHNICIAN ___________________________________________________________________

DATE __________________________________

CUSTOMER REPRESENTATIVE_____________________________________________________________

DATE___________________________________

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53300053-01

Printed in U.S.A.

Form 30MP-1T

Pg CL-8

1-10

Replaces: New

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