Trane Wheelchair Direct Fired Indoor and Outdoor Make Up Air Units User Manual

Controls Program m ing Guide

Direct-Fired Indoor and Outdoor Make-Up

Air Units

DFIA

DFOA

January 2007

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NETWORKING

AdaptAire is adaptable to a variety of different network architectures and

protocols. Each controller has built-in protocol translation and can be configured

for operation on ARCnet156 or EIA-485 com m unication networks. See Appendix

IV for specific controller specifications.

The AdaptAire system can be connected to m ost existing building autom ation

system s. Som e system s m ay require the use of special controllers and network

com m unication devices. See Appendix I for Device Param eters and Cache Setup

inform ation.

ADAPTAIRE DEFAULT SETTINGS

The following is a list of AdaptAire DDC controller defaults. These are the default

operating param eters set at the factory prior to shipm ent.

Table 1.

Default settings

ITEM

DEFAULT

002 binary dips

OFF

RANGE

Unit Network Address

000 – 255 binary dips

OFF – MANUAL - AUTO

Unit Operating Mode

Time Clock Schedule

None

4 Daily - 12 Holiday - 2

Override schedules

Heating/Cooling Operating

Mode

Heating

Manual

HEATING - COOLING

Damper Operating Mode

MANUAL - BUILDING

PRESS - MIXED AIR

TEMP

Fuel Selection

Heating Night Setback

Cooling Night Setback

Room Temperature Setpoint

Freezestat

Natural Gas

55°F

NATURAL - PROPANE

40°F - 80°F

100°F

65°F

75°F - 120°F

55°F - 90°F

45°F

35°F - 50°F

Outside Air Economizer

Setpoint

65°F

40°F - 80°F

Minimum Discharge

Temperature Setpoint

55°F

100°F

50°F

40°F - 130°F

55°F - 130°F

30°F - 90°F

Maximum Discharge

Temperature Setpoint

Mixed Air Temperature

Setpoint

Building Pressure Setpoint

0” W. C.

-0.05” - +0.05” W. C.

0% - 100%

Manual Damper Position

Setpoint

20% Outside Air

Minimum Ventilation

Setpoint

20% Outside Air

0% - 100%

User PID Select

High Input Value

Direct Acting

DIRECT -REVERSE

-9999.99 – 99999.99

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Table 1.

Default settings (continued)

ITEM

DEFAULT

RANGE

Low Input Value

-9999.99 – 99999.99

User Control Setpoint

Maximum User Setpoint

Minimum User Setpoint

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Contents

NETWORKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

ADAPTAIRE DEFAULT S E TTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Unit Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

MDT Controls: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

MRT C o ntrols: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

MRT-Pro Controls: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

MRT-Ex p ert C o ntrols: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

H e at i n g /V e nt i l a ting/Cooling Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . 12

H e at i n g Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

V e nt i l a tion Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

C o o l i n g Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

D a m per C o ntrol Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

F u nct i o ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

100% Outside Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Minim um V e nt i l a tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Freezestat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Cl o gged F ilt e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

User C o n f i g ured P I D C o ntrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

DIRECT ACTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

REVER S E A CTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Unit Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Multiplexed I n puts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Cl o ck Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Di a gnost i cs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Critical Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . L o w D i s charge T e m perature26

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S a f e ty Circuit Open29

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B u rner Status30

FAULT CODE: B u rner H a nd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fl a m e F a i l u re32

Di a gnost i cs - Non-Critical Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U n i t o f f/F a n on33

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U n i t o n /F a n o f f34

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C h eck Airflow Switches35

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cl o gged F ilt e r Sw i tch36

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E n ergy Save Mode 137

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E n ergy Save Mode 238

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E n ergy Save Mode 339

FAULT CODE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I n su f fici e nt O A40

Menu Se l e ct i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Menu Se l e ction Tree for BACview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

UN I T M ODES HOTKEY - 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

S E T PO I N TS HOTKEY - 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

S T ATUS MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HOTKEY - 445

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Contents

ALARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HOTKEY - 145

RE S E TS HOTKEY - 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

S C HEDULES HOTKEY- 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

USER CONF I G URABLE OUTPUT HOTKEY - 8 . . . . . . . . . . . . . . . . . . . . . . . . . 46

CLOCK S E T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HOTKEY - 047

HELP HOTKEY - 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

FUEL S E LECT HOTKEY - 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

T h e r m o stat Output C u rve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10 K Ohm s Therm istor Output Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Airflow Station L a yout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

I/ O Z o ne 583 Controller Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

T y pical Wiring Schem atic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

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Unit Operating Modes

There are three different m odes that control the supply fan and unit operation:

•

Off

Manual

Auto

There are also four different m ethods for controlling the operating m odes:

•

"a rem ote panel with two rotating knob adjustm ents (MDT and MRT controls)

"a rem ote panel with one rotating knob and an intelligent room sensor (MRT-

Pro controls)

•

"an intelligent room sensor and local user interface panel with LCD display

(MRT-

any of the above controls with a internet-base WebCTRL interface.

MDT Controls:

MDT, m odulating discharge tem perature, is the m ost basic AdaptAire control for

discharge tem perature. The MDT control system includes a rem ote control panel

equipped with 1 or 2 potentiom eters, 3 or m ore pilot lights, and up to 2 switches.

UNIT OFF MODE

Off Mode is the default unit operational m ode. To place the unit in the Off Mode,

rotate the "tem perature setpoint" knob on the rem ote control panel

counterclockwise to the stop. This will place the unit in the OFF m ode and

extinguish the "unit enable" light. The OFF m ode prevents the unit from starting

UNIT MANUAL MODE

Manual Mode allows the unit to turn on. To place the unit in the Manual Mode,

rotate the "tem perature setpoint" knob on the rem ote control panel clockwise to

the desired discharge air tem perature setpoint. This will place the unit in the

MANUAL m ode and enable the burner. See Heating/Ventilating/Cooling Modes

and Energy Saving Modes of this m anual for m ore inform ation.

UNIT AUTO MODE

Auto Mode has four different functions that control the unit operation. They are a

tim e clock, heating and cooling night setbacks, and a signal from an external

source.

The MDT control does not support the tim e clock, night setback, or auxiliary unit

enable functions.

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MRT Controls:

MRT, m odulating room tem perature, is the m ost basic AdaptAire control for

room tem perature. The MRT control system includes a rem ote control panel

equipped with 1 or 2 potentiom eters, 3 or m ore pilot lights, and up to 2 switches.

UNIT OFF MODE

Off Mode is the default unit operational m ode. To place the unit in Off Mode

rotate the "tem perature setpoint" knob on the rem ote control panel

counterclockwise to the stop. This will place the unit in the OFF m ode and

extinguish the "unit enable" light. The OFF m ode prevents the unit from starting.

UNIT MANUAL MODE

Manual Mode allows the unit to turn on To place the unit in Manual Mode rotate

the "tem perature setpoint" knob on the rem ote control panel clockwise to the

desired room tem perature setpoint. This will place the unit in the MANUAL

m ode. The burner will be enabled if the room air tem perature is 2° below the

room tem perature setpoint and will be deactivated when the room air

tem perature is above the room tem perature setpoint. The cooling output will be

enabled if the room air tem perature is 2° above the room tem perature setpoint

and will be deactivated when the room air tem perature is below the room

tem perature setpoint.

UNIT AUTO MODE

Auto Mode has four different functions that control the unit operation. They are a

tim e clock, heating and cooling night setbacks, and a signal from an external

source.

The MRT control does not support the tim e clock, night setback, or auxiliary unit

enable functions.

MRT-Pro Controls:

The AdaptAire MRT-Pro, m odulating room tem perature control, provides som e

lim ited inform ation regarding unit operation on an LCD display and allows the

user to adjust a few basic operational param eters. The MRT-Pro m ust be placed

in the MANUAL or AUTO m ode in the controller program using a BACview or PC

in order for it to operate. The Off, Manual, and Auto m odes will then function as

described in the following sections.

UNIT OFF MODE

Off Mode is the default unit operational m ode. The OFF m ode prevents the unit

from starting and overrides the Tim e Clock and Night Setback functions. A

BACview or PC is required to change from this m ode. See the section related to

the MRT Expert for instructions on how to use the BACview for program m ing.

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Unit Operating Modes

UNIT MANUAL MODE

Manual Mode allows the unit to turn on regardless of the Tim e Clock or Night

Setback functions. A BACview or PC is required to change to this m ode. See the

section related to the MRT Expert for instructions on how to use the BACview for

program m ing.

UNIT AUTO MODE

Auto Mode has four different functions that control the unit operation. They are a

tim e clock, heating and cooling night setbacks, and a signal from an external

source. A BACview or PC is required to change to this m ode. See the section

related to the MRT Expert for instructions on how to use the BACview for

program m ing.

Unoccupied/ Occupied Control. Once the unit is placed in the Auto Mode, the

unit can be controlled from the keypad on the MRT-Pro room sensor. The MRT-

Pro room sensor display will indicate the unit is in the un-occupied period. To

turn the unit on and place it in the occupied period press the "Manual On" button

on the face of the MRT-Pro room sensor. Pressing the "Warm er" button can

increase the am ount of "on" tim e. Pressing the "Cooler" button can decrease the

am ount of "on" tim e. Each press decreases the tim e in 30-m inute increm ents.

Each press increases the tim e in 30-m inute increm ents to a m axim um of 9 hours

of "on" tim e.

To turn the unit off and place it in the un-occupied period press the "Manual On"

button on the face of the MRT-Pro room sensor. The display will indicate the

am ount of "on" tim e rem aining. Press the "Cooler" button repeatedly until the

tim e reaches zero, and the unit shuts off. Each press decreases the tim e in 30-

m inute increm ents.

Auto Mode has four different functions that control the unit operation. They are a

tim e clock, heating and cooling night setbacks, and a signal from an external

source.

Scheduling Tim e Clock. This function requires the purchase of a BACview or a

direct PC interface to the unit controller. See the section related to the MRT

Expert for instructions on how to use the BACview for program m ing.

Heating Night Setback. The Heating Night Setback function autom atically cycles

the unit "on" if the room tem perature falls below the Heating Night Setback

tem perature setpoint, and the unit is scheduled to be "off". If the unit is scheduled

to be "off" and the Heating Night Setback function turns the unit "on", the unit will

be cycled "off" once the room air tem perature has risen 2° above the Heating

Night Setback setpoint. The default for this setpoint is 55°F and is fixed at 10°

below the Heating setpoint. Changing the Heating setpoint changes the Heating

Night Setback setpoint

Cooling Night Setback. The Cooling Night Setback function autom atically cycles

the unit "on" if the room tem perature rises above the Cooling Night Setback

tem perature setpoint, and the unit is scheduled to be "off". If the unit is scheduled

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Unit Operating Modes

to be "off" and the Cooling Night Setback function turns the unit "on", the unit will

be cycled "off" once the room air tem perature has fallen 2° below the Cooling

Night Setback setpoint. The default for this setpoint is 100°F and is fixed at 27°

above the Cooling setpoint. Changing the Cooling setpoint changes the Cooling

Night Setback setpoint.

Auxiliary Unit Enable. The Auxiliary Unit Enable function overrides all other

Auto Mode functions and autom atically cycles the unit into operation. This

function is activated whenever a contact is closed between the appropriate

term inals on the unit's term inal strip located in the unit's m ain control panel. See

the Typical Wiring Schem atic and Multiplexed Input sections of this m anual for

m ore inform ation. This function can be used with a twist tim er, toggle switch,

door switch, exhaust fan interlock, or any other dry contact to override the tim e

clock schedule.

MRT-Expert Controls:

The AdaptAire MRT-Expert, m odulating room tem perature control, provides full

inform ation regarding unit operation and allows the user to adjust all operational

param eters using the included BACview panel.

UNIT OFF MODE

Off Mode is the default unit operational m ode. To place the unit in Off Mode

scroll through the Unit Modes m enu tree, locate the AUTO/OFF/MANUAL branch,

and select OFF. This will place the unit in the OFF m ode. The OFF m ode prevents

the fan and burner from starting. This m ode will override the Tim e Clock and

Night Setback functions.

UNIT MANUAL MODE

Manual Mode allows the supply fan to turn on regardless of the Tim e Clock or

Night Setback functions. Heating and cooling functions use the Night Setback

Setpoints. To place the unit in Manual Mode scroll through the Unit Modes m enu

tree, locate the AUTO/OFF/MANUAL branch, and select MANUAL. This will place

the unit in the MANUAL m ode.

UNIT AUTO MODE

Auto Mode has four different functions that control the supply fan and unit

operation. They are a tim e clock function, heating and cooling night setbacks,

and a signal from an external source to an auxiliary digital input. To place the unit

in Auto Mode scroll through the Unit Modes m enu tree, locate the AUTO/OFF/

MAN branch, and select AUTO. This will place the unit in the AUTO m ode. This

activates the four Auto m ode functions.

Scheduling Tim e Clock. The prim ary Auto Mode function is the Tim e Clock

Schedule. The Tim e Clock function allows the user to schedule the operational

tim es of the unit. There are four different schedules available: 24 hour continuous

operation, daily, holiday, and override. The daily schedule can be program m ed

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Unit Operating Modes

for up to 4 separate On/Off events with any com bination of days. The norm al

schedule sets the typical On/Off tim es for the unit. The holiday schedule can be

program m ed for up to 12 separate On/Off events with any com bination of days.

The holiday schedule sets the Off tim es for holidays and other shutdown periods.

The override schedule can be program m ed for up to 2 separate On/Off events

with any com bination of days. The override schedule sets the On tim es that will

override the holiday schedule. This scheduling system allows the user to

program a diverse array of On/Off operations. An exam ple of a typical schedule

would be to have the unit On Monday through Friday from 6:00 AM to 5:00 PM,

except during the weeks of Thanksgiving and Christm as when the units will be

Off. However they will run each weekday during the Thanksgiving shutdown

from 8:00 AM until noon while a m aintenance crew is in the building. AdaptAire

has no preset operational schedule.

To set the tim e clock function for 24 hour continuous operation scroll through the

m enu tree and locate the SCHEDULES page. Set the 24 Hr Operation to yes. Enter

the Daily section of the m enu and set the Use tab to yes. Finally select the days

for 24 hour operation.

To set the operational tim es of the unit scroll through the SCHEDULES m enu

tree, and locate the desired Daily, Holiday, or Override branch. Enter the days and

tim es for the unit to operate. In the Daily or Override section these tim es should

correspond to the desired "on" tim es for the unit's operation. In the Holiday

section these tim es should correspond to the desired "off" tim es for the unit's

operation.

See the CLOCK SET section of this m anual for setting the tim e, date and Daylight

Savings function.

Heating Night Setback. The Heating Night Setback function autom atically cycles

the unit "on" if the room tem perature falls below the Heating Night Setback

tem perature setpoint, and the unit is scheduled to be "off". If the unit is scheduled

to be "off" and the Heating Night Setback function turns the unit "on", the unit will

be cycled "off" once the room air tem perature has risen 2° above the Heating

Night Setback setpoint. The default for this setpoint is 55°F. To change the Heating

Night Setback setpoint scroll through the SETPOINTS m enu tree, locate the

Heating Night Setback setpoint and enter a new tem perature. The allowable

tem perature range is 40°F - 80°F.

Cooling Night Setback. The Cooling Night Setback function autom atically cycles

the unit "on" if the room tem perature rises above the Cooling Night Setback

tem perature setpoint and the unit is scheduled to be "off". If the unit is scheduled

to be "off" and the Cooling Night Setback function turns the unit "on", the unit will

be cycled off once the room air tem perature has fallen 2° below the Cooling

Night Setback setpoint. This function toggles digital output DO1. The default for

this setpoint is 100°F. To change the Cooling Night Setback setpoint scroll through

the SETPOINTS m enu tree, locate the Cooling Night Setback setpoint and enter a

new tem perature. The allowable tem perature range is 75°F - 125°F.

Auxiliary Unit Enable. The Auxiliary Unit Enable function overrides all other

Auto Mode functions and autom atically cycles the unit into operation. This

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Unit Operating Modes

function is activated whenever a contact is closed between the appropriate

term inals on the unit's term inal strip located in the unit's m ain control panel.

Heating and cooling functions use the Night Setback Setpoints. See the Typical

Wiring Schem atic and Multiplexed Input sections of this m anual for m ore

inform ation. This function can be used with a twist tim er, toggle switch, door

switch, exhaust fan interlock, or any other dry contact to override the tim e clock

schedule.

Heating/ Ventilating/ Cooling Operating Modes

The AdaptAire DDC controller autom atically switches between the heating,

ventilating and cooling m odes of operation.

Heating Mode

Heating Mode allows the burner to operate as needed and is activated whenever

the room tem perature is 2° below the heating setpoint.

General Burner Control

In the Heating Mode the burner will m odulate to m aintain a constant

tem perature. To change the desired heating discharge or room tem perature of an

MDT or MRT control system , rotate the tem perature setpoint knob on the rem ote

panel clockwise to the desired tem perature.

To change the desired heating room tem perature of an MRT-Pro control system ,

depress the Warm er button to increase the desired room tem perature setpoint or

depress the Cooler button to decrease the desired room tem perature setpoint.

Each push of a button changes the tem perature setpoint by 1°F. The setpoint can

be changed a m axim um of ±10°F from the default of 72°F.

To change the desired heating room tem perature of an MRT-Expert control

system , scroll through the SETPOINTS m enu tree using the BACview, locate the

Occupied Heating Setpoint, and enter a new tem perature. The allowable

tem perature range is 55°F - 90°F. The burner will m odulate using a PID loop to

m aintain this tem perature.

Additionally, on all controls system s except the MDT the control system

m odulates the burner to m aintain the supply air tem perature within a defined

operating window. This window defines the m axim um and m inim um discharge

tem peratures.

To change the desired m inim um supply or discharge air tem perature scroll

through the SETPOINTS m enu tree, locate the HTG MIN DA Setpoint, and enter a

new tem perature. This tem perature m ust not be greater than the HTG MAX DA

Setpoint. The allowable tem perature range is 40°F - 130°F. This sets the lowest

discharge air tem perature that will leave the unit.

To change the desired m axim um supply or discharge air tem perature scroll

through the SETPOINTS m enu tree, locate the HTG MAX DA Setpoint, and enter

a new tem perature. This tem perature m ust not be less than the HTG MIN DA

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Unit Operating Modes

Setpoint. The allowable tem perature range is 55°F - 130°F. This sets the highest

discharge air tem perature that will leave the unit.

If the m axim um and m inim um discharge tem perature setpoints are set for the

sam e tem perature, the supply air tem perature will be the sam e as the setpoint

regardless of the room tem perature setpoint or actual room tem perature.

Recirculating Direct-Fired Heaters. Using different controller software, the

AdaptAire DDC system can accom m odate three distinct types of recirculating

direct-fired units: those that return air before the burner and em ploy a special

airflow station, those that return air before the burner and do not em ploy a

special airflow station, and those that recirculate air after the burner.

Recirculating direct-fired units, like all direct-fired units, deliver all of their

products of com bustion directly to the heated air space. For this reason it is

extrem ely im portant that the proper ventilation rate be m aintained to dilute these

em issions.

AdaptAire units, that recirculate air before the burner and em ploy an airflow

m easuring station, utilize a control schem e that m easures air pressure to

determ ine the ratio of outside air and return air. These units are listed by an

independent third party testing agency and use the equivalent tem perature rise

control schem e to lim it burner m odulation. The AdaptAire system accurately

m easures the ratio of outside and return air, calculates the allowable equivalent

tem perature rise and autom atically lim its the burners firing rate. This insures the

products of com bustion, delivered to the space by the unit, are held at or below

allowable OSHA thresholds. The outside air percentage is the driving param eter

for this function. A greater percentage of outside air or dilution air enables the

unit to generate a higher allowable equivalent tem perature rise.

AdaptAire units that recirculate air before the burner and do not em ploy an

airflow m easuring station utilize a control schem e that m easures dam per

position to determ ine the percentage of return air. These units are not listed by

an independent third party testing agency but do use the equivalent tem perature

rise control schem e to lim it burner m odulation.

AdaptAire units that recirculate air after the burner are physically constrained to

lim it the percentage of return air. These constraints are m eant to provide the

proper dilution air. An independent third party testing agency and do not use the

equivalent tem perature rise control schem e to lim it burner m odulation does not

list these units.

In order of lowest to greatest priority the burner m odulation param eters are:

room tem perature, discharge or supply air tem perature, and equivalent

tem perature rise.

There are three Energy Savings m odes that could disable the burner.

Energy Savings Mode 1—Mixing Box Recirculating Units. Energy Savings Mode

1 will autom atically disable the burner if the m ixed air tem perature is equal to or

greater than the m inim um discharge air tem perature setpoint, and the room air

tem perature is 5°F above the room air tem perature setpoint. This function is

intended to restrain the room tem perature from rising uncontrollably in buildings

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Unit Operating Modes

with internal heat gain. In certain conditions it m ay be necessary to readjust the

m inim um discharge air or room tem perature setpoint upward or adjust the

outside/return air ratio to provide a warm er supply air tem perature.

Energy Savings Mode 1—Non-Recirculating Units. Energy Savings Mode 1 will

autom atically disable the burner if the outside air tem perature is equal to or

greater than the m inim um discharge air tem perature setpoint, and the room air

tem perature is 5°F above the room air tem perature setpoint. This function is

intended to restrain the room tem perature from rising uncontrollably in buildings

with internal heat gain. In certain conditions it m ay be necessary to readjust the

m inim um discharge air or room tem perature setpoint upward or adjust the

outside/return air ratio to provide a warm er supply air tem perature.

Energy Savings Mode 2—Mixing Box Recirculating Direct-Fired Units. Energy

Savings Mode 2 will autom atically disable the burner if the burner's m inim um

firing rate exceeds the allowable equivalent tem perature rise. This condition is

unlikely to occur unless the burner's m inim um firing rate is m isadjusted and set

too high, or the inlet air opening is restricted.

Energy Savings Mode 3. Energy Savings Mode 3 will autom atically disable the

burner if the outside air tem perature is above the Outside Air Econom izer

setpoint. This function is sim ilar to an inlet duct therm ostat. The burner will cycle

back on if the supply air tem perature drops 3°F below the Outside Air Econom izer

setpoint.

To change the desired outside air econom izer tem perature scroll through the

SETPOINTS m enu tree, locate the ECONOMIZER Setpoint, and enter a new

tem perature. The default for this setpoint is 65°F. The allowable tem perature

range is 40°F - 80°F.

Ventilation Mode

Ventilation Mode occurs when the fan is running but the unit is not providing

heating or cooling.

On an MDT control system the heating m ode is activated when the rem ote

tem perature setpoint knob is turned to start the unit. See Energy Savings Modes

for m ore inform ation.

On all other system s the ventilation m ode is dependant on the room

tem perature. The heating/ventilation/cooling operation is dem onstrated below.

The dotted line in the m iddle of the diagram represents the change between

room tem perature rise and room tem perature fall. Select a point on the heavy

line in the diagram to determ ine the m ode of operation.

EXAMPLE: Start at point "A". The unit is in the ventilation m ode and the room

tem perature is rising. Follow the dashed line upward. If the room tem perature

rises to a tem perature that is 2°F over the cooling setpoint, the cooling will be

enabled, and the unit will be in the cooling m ode. Follow the solid line clockwise.

Once the room tem perature has fallen to the cooling setpoint, the cooling m ode

will be disabled, and the room will be in the ventilation m ode. Follow the dashed

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Unit Operating Modes

line downward. If the room tem perature falls to a tem perature that is 2°F below

the heating setpoint, the heating will be enabled, and the unit will be in the

heating m ode. Continue following the solid line in a clockwise direction to the

heating setpoint. Once the room tem perature rises to the heating setpoint, the

heating m ode will be disabled, and the room will be in the ventilation m ode.

Figure 1. Cooling Mode

Cooling mode

Cooling

mode

Cooling

mode

+2°F of cooling SP

cooling enable

Ventilation

mode

cooling SP

Ventilation

mode

heating SP

-2°F of heating SP

heating enable

Heating

mode

Heating

mode

Heating mode

Cooling Mode

Cooling Mode allows the cooling to operate as needed and is activated whenever

the room tem perature is 2° above the cooling setpoint. In the Cooling Mode the

cooling output will cycle to m aintain a constant room tem perature. The cooling

output does not have an anti-cycle delay.

The MDT control system does not support the Cooling Mode.

To change the desired cooling room tem perature of an MRT control system ,

rotate the tem perature setpoint knob on the rem ote panel clockwise to the

desired tem perature. The allowable tem perature range is 55°F - 90°F. The cooling

will be disabled when the room tem perature drops to the Cooling Setpoint.

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Unit Operating Modes

To change the desired cooling room tem perature of an MRT-Pro control system ,

depress the Warm er button to increase the desired room tem perature setpoint or

depress the Cooler button to decrease the desired room tem perature setpoint.

Each push of a button changes the tem perature setpoint by 1°F. The setpoint can

be changed a m axim um of ±10°F from the default of 72°F.

To change the desired cooling room tem perature of an MRT-Expert control

system , scroll through the SETPOINTS m enu tree using the BACview, locate the

Occupied Cooling Setpoint, and enter a new tem perature. The allowable

tem perature range is 61°F - 96°F. The burner will m odulate using a PID loop to

m aintain this tem perature.

Additionally, on all controls system s except the MDT the control system cycles

the cooling output to m aintain the supply air tem perature within a defined

operating window. This window defines the m axim um and m inim um discharge

tem peratures.

To change the desired m inim um supply or discharge air tem perature scroll

through the SETPOINTS m enu tree, locate the CLG MIN DA Setpoint, and enter a

new tem perature. This tem perature m ust not be greater than the CLG MAX DA

Setpoint. The allowable tem perature range is 55°F - 130°F. This sets the lowest

discharge air tem perature that will leave the unit.

To change the desired m axim um supply or discharge air tem perature scroll

through the SETPOINTS m enu tree, locate the CLG MAX DA Setpoint, and enter a

new tem perature. This tem perature m ust not be less than the CLG MIN DA

Setpoint. The allowable tem perature range is 55°F - 130°F. This sets the highest

discharge air tem perature that will leave the unit.

If the m axim um and m inim um discharge tem perature setpoints are set for the

sam e tem perature, the supply air tem perature will be the sam e as the setpoint

regardless of the room tem perature setpoint or actual room tem perature.

Dam per Control Modes

There are four different m odes that control the unit dam per operation: Manual,

Mixed Air Tem perature, Building Pressure, and 100% Outside Air. Except for the

100% Outside Air m ode, these operating m odes are selected through the m enu

tree of the local user interface or PC. Not all dam per m odes are available on all

units.

Manual Mode

Manual Mode is the default dam per operational m ode. This will set the outside

air dam per to a fixed position.

MDT and MRT Controls. To place the dam per operation in Manual Mode on an

MDT or MRT control system be sure the appropriate term inals in the unit control

panel are not shorted. See the Typical Wiring Schem atic and Multiplexed Input

sections of this m anual for m ore inform ation. Rotate the dam per control knob on

the rem ote panel to the desired percentage of outside air. If the unit served by

this control is a direct-fired heater, that recirculates air before the burner, and is

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Unit Operating Modes

operating in the heating m ode, the unit will autom atically keep the m inim um

outside air at 20%. If the outside air drops below 20%, the burner will cycle off.

See Minim um Ventilation.

MRT-Pro Controls. To change the dam per m ode on an MRT-Pro control system

requires the use of a BACview or PC. See the section related to the MRT Expert

for instructions on how to use the BACview for program m ing.

MRT-Expert Control. To place the dam per operation in Manual Mode scroll

through the m enu tree, locate the Dam per Mode branch and select Manual Pos.

Next, scroll through the m enu tree, locate the Setpoints branch, select Man Vent

SP, and enter the desired dam per position. The allowable range is 0% to 100%. If

the unit served by this control is a direct-fired heater, that recirculates air before

the burner, and is operating in the heating m ode, the unit will autom atically keep

the m inim um outside air at 20%. If the outside air drops below 20%, the burner

will cycle off. See Minim um Ventilation.

Mixed Air Tem perature Mode

The Mixed Air Tem perature m ode varies the percentages of outside air and

return air to m aintain a constant m ixed air tem perature. The AdaptAire controller

com putes the m ixed air tem perature using the outside air and return air

tem peratures and the ratio of their respective airflows.

MDT and MRT Controls. To place the dam per operation in Mixed Air

Tem perature Mode on an MDT or MRT control system be sure the appropriate

term inals in the unit control panel are shorted. See the Typical Wiring Schem atic

and Multiplexed Input sections of this m anual for m ore inform ation. Rotate the

dam per control knob on the rem ote panel to the desired m ixed air tem perature. If

the unit served by this control is a direct-fired heater, that recirculates air before

the burner, and is operating in the heating m ode, the unit will autom atically keep

the m inim um outside air at 20%. If the outside air drops below 20%, the burner

will cycle off. See Minim um Ventilation.

MRT-Pro Controls. To change the dam per m ode on an MRT-Pro control system

requires the use of a BACview or PC. See the section related to the MRT Expert

for instructions on how to use the BACview for program m ing.

MRT-Expert Control. To place the dam per operation in Mixed Air Tem perature

Mode scroll through the m enu tree, locate the Dam per Mode branch and select

MA Tem p Ctrl. Next, scroll through the m enu tree, locate the Setpoints branch,

select Mixed Air, and enter the desired tem perature. The allowable range is 30°F -

80°F. If the unit served by this control is a direct-fired heater, that recirculates air

before the burner, and is operating in the heating m ode, the unit will

autom atically keep the m inim um outside air at 20%. If the outside air drops

below 20%, the burner will cycle off. Se e Min im u m Ve n t ila t io n .

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Unit Operating Modes

Building Pressure Mode

The Building Pressure m ode varies the percentages of outside air and return air

to m aintain a constant pressure within the space. A pressure transducer

com pares the pressure outside the space to the pressure inside the space and

transm its a corresponding signal to the AdaptAire controller. The controller

com pares this signal to the desired building pressure setpoint and uses a PID

loop to m odulate the outside air and return air dam pers to m aintain the specified

building pressure.

MDT and MRT Controls. The MDT and MRT control system s do not support

building pressure control m ode.

MRT-Pro Controls. To change the dam per m ode on an MRT-Pro control system

requires the use of a BACview or PC. See the section related to the MRT Expert

for instructions on how to use the BACview for program m ing.

MRT-Expert Control. To place the dam per operation in Building Pressure Mode

scroll through the m enu tree, locate the Dam per Mode branch and select Bldg Prs

Ctrl. Next, scroll through the m enu tree, locate the Setpoints branch, select Bldg

Prs, and enter the desired pressure. The allowable range is -0.05"wc to +0.05"wc.

If the unit served by this control is a direct-fired heater, that recirculates air before

the burner, and is operating in the heating m ode, the unit will autom atically keep

the m inim um outside air at 20%. If the outside air drops below 20%, the burner

will cycle off. Se e Min im u m Ve n t ila t io n .

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100% Outside Air

The 100% Outside Air function autom atically opens the outside air dam pers and

closes the return air dam pers. This function is activated whenever a contact is

closed between the appropriate term inals on the unit's term inal strip located in

the unit's m ain control panel. See the Typical Wiring Schem atic and Multiplexed

Input sections of this m anual for m ore inform ation. The 100% Outside Air

function overrides all other dam per control functions. See User Configured PID

Control for use with non-recirculating units.

Minim um Ventilation

To change the Minim um Ventilation requires the use of a BACview or PC. The

Minim um Ventilation function defines the m inim um outside air percentage and

autom atically prevents the dam pers from m odulating below this point. This

function can be used in heating or cooling m ode. If the unit served by this control

is a direct-fired heater, that recirculates air before the burner, and is operating in

the heating m ode, the unit will autom atically keep the m inim um outside air at

20%. If the outside air drops below 20%, the burner will cycle off. To specify the

Minim um Ventilation scroll through the m enu tree, locate the Setpoints branch

and select Min Vent, and enter the desired outside air percentage. The allowable

range is 0% - 100% outside air.

Freezestat

To change the Minim um Ventilation requires the use of a BACview or PC. The

Freezestat function autom atically cycles the unit off if the supply air tem perature

drops below the Freezestat setpoint for 3 continuous m inutes. There is an initial

8-m inute delay prior activation on recirculating units, and an initial 6-m inute

delay on non-recirculating units. The Freezestat function prevents the unit from

starting. The default for this setpoint is 45°F. To change the Freezestat setpoint

scroll through the m enu tree, locate the Setpoints branch, select Freezestat SP,

and enter a new tem perature. The allowable tem perature range is 35°F - 50°F.

Clogged Filter

An optional clogged filter switch is required for this function. The Clogged Filter

function autom atically notifies the user of a dirty filter condition. A Clogged Filter

indication will appear on the rem ote panel or local user interface. This function is

activated whenever a contact is closed between the appropriate term inals on the

unit's term inal strip located in the unit's m ain control panel. See the Typical

Wiring Schem atic and Multiplexed Input sections of this m anual for m ore

inform ation.

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User Configured PID Control

This function is applicable to non-recirculating units only. The User Configured

PID Control function allows the user to control an analog output based on a user

defined analog input and setpoint. See the Typical Wiring and Unit Controller

Specification sections of this m anual for m ore inform ation regarding the inputs

and outputs. This function also allows the user to select the PID type (direct or

reverse acting) and establish upper and lower control lim its. Five keypad entries

define the operational param eters. These param eters are: User Control Setpoint,

Minim um User Setpoint, Maxim um User Setpoint, Low Input Value, and High

Input Value. The low and high input values describe the input transducer range.

The control setpoint is the prim ary operational param eter while the m inim um

and m axim um setpoints describe the extents of the desired operating range and

provide secondary control as described below. The allowable range for all of

these param eters is -9999.99 - +99999.99.

The analog input and output are polarity sensitive and can be configured for

different types of inputs. See the Typical Wiring and Unit Controller Specification

sections of this m anual for m ore inform ation regarding the inputs and outputs.

The analog input m ust be connected to IN-1. This input m ust be configured for

either of two different types of input signals:

•

0-5Vdc: The output im pedance m ust not exceed 10K?. The input im pedance

of the controller is 1M?. This input is polarity sensitive. Be sure the

connections from the source are correctly polarized at the controller.

Therm istor: Precon type 2 (10k ohm at 77°F) Input voltages should range

between 0.489V and 3.825V. See the wiring diagram s for recirculating m odel

units for typical connections of transducers.

The IN-1 configuration jum pers on the controller m ust be set for the

appropriate input signal.

A c o n t a c t c lo s u re b e t w e e n t h e a p p ro p ria t e t e rm in a ls o n t h e u n it ' s

t e rm in a l s t rip lo c a t e d in t h e u n it ' s m a in c o n t ro l p a n e l w ill d rive t h e

o u t p u t t o 10 0 % . See the Typical Wiring Schem atic and Multiplexed Input

sections of this m anual for m ore inform ation.

DIRECT ACTING

The controller output is m odulated by a PID loop from 0% to 100% based on the

User Control setpoint and the input signal. As the input signal increases the

output voltage increases. Additionally, a secondary control acts to override the

PID loop to scale the output as follows.

If the input variable equals the User Control setpoint, the output will be

determ ined by the PID loop. In this situation the override has no effect on the

output value.

If the input variable is above the User Control setpoint, the output could increase

from 0% to 100% as the input variable increases from the User Control setpoint

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to the Max User setpoint. In this situation the output value is the greater of the

PID output or the override output.

If the input variable is below the User Control setpoint, the output could decrease

from 100% to 0% as the input variable decreases from the User Control setpoint

to the Min User setpoint. In this situation the output value is the lesser of the PID

utput or the override output. See the following exam ple.

Assum e the user wishes to control a chilled water valve using a tem perature

transducer. The control variable will be supply air tem perature. As the supply air

tem perature increases, the chilled water valve should open to lower the

tem perature. The tem perature transducer has a range of 50ºF - 85ºF. The user

would like the supply air tem perature to be 75ºF but does not want it to drop

below 70ºF or go above 80ºF. The param eters entered on the keypad display will

be:

Direct (as input increases

PID Select

High Input Val

Low Input Val

User Ctrl SP

Max User SP

Min User SP

output increases)

85ºF

50ºF

75ºF

80ºF

70ºF

The tem perature transducer senses the supply air tem perature and sends a

corresponding signal to the AdaptAire controller. The controller com pares this

signal to the desired user control setpoint (75ºF) and uses the PID loop to

m odulate the output from 0-100% (0-10Vdc). The output is connected to the

chilled water valve that opens or closes to m aintain the specified supply air

tem perature.

If the supply air tem perature is 75ºF, the output from the controller will be

determ ined by the PID control sequence, and the override will have no effect on

the output.

If the supply air tem perature is m ore than 75ºF, the output from the controller will

be determ ined by the PID control sequence or the override whichever is less.

If the supply air tem perature is less than 75ºF, the output from the controller will

be determ ined by the PID control sequence or the override whichever is m ore.

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Figure 2. Direct acting

Max User SP

80ºF

100%

override

scaler

75ºF

0-100%

Output

User Ctrl SP

75ºF PID 0-100%

75ºF

100%

override

scaler

Min User SP

70ºF

REVERSE ACTING

The controller output AO-1 is m odulated by a PID loop from 0% to 100% based on

the User Control setpoint and the input signal to IN-9. As the input signal

increases the output voltage decreases. Additionally, a secondary control acts to

override the PID loop to scale the output as follows.

If the input variable equals the User Control setpoint, the output will be

determ ined by the PID loop. In this situation the override has no effect on the

output value.

If the input variable is above the User Control setpoint, the output could decrease

from 100% to 0% as the input variable increases from the User Control setpoint

to the Max User setpoint. In this situation the output value is the lesser of the PID

output or the override output.

If the input variable is below the User Control setpoint, the output could increase

from 0% to 100% as the input variable decreases from the User Control setpoint

to the Min User setpoint. In this situation the output value is the greater of the

PID output or the override output. See the following exam ple.

Assum e the user wishes to control the fan speed using a variable frequency drive

(VFD). The VFD input is 0-10Vdc. The control variable will be building pressure.

As the building pressure increases, the fan speed should decrease. The building

pressure transducer has a range of -0.1" to +0.1". The user would like the building

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Functions

pressure to be+0.03" but does not want it to drop below 0.0" or go above +0.05".

The param eters entered on the keypad display will be:

PID Select

High Input Val

Low Input Val

User Ctrl SP

Max User SP

Min User SP

Reverse (as input increases output decreases)

.10

-0.10

0.03

0.05

0.00

The pressure transducer com pares the pressure outside the space to the

pressure inside the space and transm its a corresponding signal to the AdaptAire

controller. The controller com pares this signal to the desired user control

setpoint (0.03") and uses the PID loop to m odulate the output from 0-100% (0-

10Vdc). The output is connected to the VFD that changes speed to m aintain the

specified building pressure.

If the building pressure is 0.03", the output from the controller will be determ ined

by the PID control sequence, and the override will have no effect on the output.

If the building pressure is m ore than 0.03", the output from the controller will be

determ ined by the PID control sequence or the override whichever is less.

If the building pressure is less than 0.03", the output from the controller will be

determ ined by the PID control sequence or the override whichever is m ore.

Figure 3. Reverse acting

Max User SP

.05”

Input > .03”?

override

scaler

.03”

100%

0-100%

Output

User Ctrl SP

.03” PID 0-100%

.03”

override

scaler

Input < .03”?

Min User SP

.00”

100%

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Functions

Unit Resets

This section should assist the user in resetting alarm s and cycle counters which

have been displayed on the BACview.

ALARM. To reset an alarm scroll through the m enu tree, locate the Unit Resets

branch and select Alarm . Press the Enter key. The word OFF should flash. Now

press the INC key and the word ON should flash on the display. Press the Enter

key again and ON should stop flashing. Repeat this process so the word OFF is

displayed and not flashing. The alarm has now been cleared and the Alarm RS

function has been rearm ed.

CALIBRATE. The Calibrate function forces the controller to recalibrate the return

air flow station. The recalibration will occur im m ediately if the fan is running or at

the next fan start. To recalibrate scroll through the m enu tree, locate the Unit

Resets branch and select Calibrate. Press the Enter key. The word OFF should

flash. Now press the INC key and the word ON should flash on the display. Press

the Enter key again and ON should stop flashing. Repeat this process so the word

OFF is displayed and not flashing. The calibration has now been initiated and the

Calibration function has been rearm ed.

FAN COUNT. Fan Count records each fan start. To reset a fan count scroll through

the m enu tree, locate the Unit Resets branch and select Fan Count. Press the

Enter key. The word OFF should flash. Now press the INC key and the word ON

should flash on the display. Press the Enter key again and ON should stop

flashing. Repeat this process so the word OFF is displayed and not flashing. The

fan count has now been cleared and the Fan Count function has been rearm ed.

HEATING COUNT. Heating Count records each burner start. To reset a heating

count scroll through the m enu tree, locate the Unit Resets branch and select

Heating Count. Press the Enter key. The word OFF should flash. Now press the

INC key and the word ON should flash on the display. Press the Enter key again

and ON should stop flashing. Repeat this process so the word OFF is displayed

and not flashing. The heating count has now been cleared and the Heating Count

function has been rearm ed.

COOLING COUNT. Cooling Count records each cooling start. To reset a cooling

count scroll through the m enu tree, locate the Unit Resets branch and select

Cooling Count. Press the Enter key. The word OFF should flash. Now press the

INC key and the word ON should flash on the display. Press the Enter key again

and ON should stop flashing. Repeat this process so the word OFF is displayed

and not flashing. The cooling count has now been cleared and the Cooling Count

function has been rearm ed.

Multiplexed Inputs

DDC controllers are designed with a finite num ber of inputs and outputs.

Multiplexing expands the functionality of the controller by allowing m ultiple

devices to effectively share the sam e input. This is usually accom plished by

connecting resistors, either in a series or parallel configuration, to an analog

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Functions

input. A switch is used in conjunction with each resistor. When a switch is closed,

the resistance at the controller input changes. This allows the controller to

identify which switch has closed. The controller is program m ed to associate each

different resistance with a specific function. For exam ple when the optional

clogged filter switch is closed between the appropriate term inals on the unit's

term inal strip located in the unit's m ain control panel, this tells the controller that

the filters are clogged, and it notifies the user through the local user interface.

See the Typical Wiring Schem atic section of this m anual for m ore inform ation.

Clock Set

The Clock Set function is used to set the current tim e and date as well as enabling

Daylight Saving Tim e. To set the clock scroll through the m enu tree, locate the

Clockset branch, select Date, and enter a new date and tim e. Select DST to enable

Daylight Saving Tim e. Daylight Saving Tim e is the default. If the unit is installed

in the southern hem isphere, Sou Hem m ust be enabled. The default is not Sou

Hem . For you convenience Daylight Saving Tim e has been preprogram m ed for

the next several years. To reset the starting and ending DST dates scroll through

the DST m enu tree, locate the desired year, and enter a new date.

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Diagnostics

Critical Fault Codes

This section should assist the user in troubleshooting critical fault codes

m essages that have been displayed on the local user interface. These faults

require the operator to correct the condition and reset the alarm before norm al

unit operation resum es.

FAULT CODE: Low Discharge Tem perature

PROBLEM: The controller has detected a low tem perature at the fan

outlet and has shut off the unit. See Freezestat section of this m anual.

SOLUTION: If burner was operating prior to shutdown (check prior alarm log)

1. Is the outside air (OA Tem p) or room air (Room Tem p) displayed on the

BACview rem ote, reading 150°F or m ore?

–

Ye s . That sensor circuit or the sensor itself is shorted. Unplug the input

jack from the AdaptAire controller. Did the display change to -40°F or less?

–

No. There is a short in the controller input. Replace the controller.

Yes. Disconnect the sensor wiring at the sensor. Connect an ohm m eter

to the sensor. If it is shorted replace the sensor. At 77°F the resistance

should be 10K?. See therm istor output curve for other tem peratures. If

it is not shorted, there is a short in the wiring between the sensor and

the input plug. Determ ine cause and rectify. Refer to Appendix II for a

typical 10K? therm istor output curve.

–

No . Continue.

2. Is the discharge air tem perature (DA Tem p), displayed on the BACview

rem ote, reading -40°F or less?

–

Ye s . That sensor circuit or the sensor itself is open. J um per the input for

the sensor. Did the display change to 150°F or m ore?

–

No. There is an open in the controller input. Replace the controller.

Yes. Disconnect the sensor wiring at the sensor. Connect an ohm m eter

to the sensor. If it is open replace the sensor. At 77°F the resistance

should be 10K?. See therm istor output curve for other tem peratures. If

it is not open, there is a break in the wiring between the sensor and the

input plug. Determ ine cause and rectify.

–

No . Continue

3. Reset the alarm . Check and note the DC voltage at output for the gas valve

m odulation. Set the Heating Setpoint for 90°F. Set the MAX DAT and MIN DAT

Setpoints for 130°F. Did the Burner VDC, displayed on the BACview rem ote,

increase?

–

No . Unless the outside air tem perature is extrem ely warm the Burner VDC

should have increased to 7.5VDC or m ore. Close the m anual m ain gas

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Diagnostics

valve closest to the burner and m easure the discharge air tem perature. Is

it less than 130°F?

–

Yes. There is a problem with the controller program or controller itself.

Contact the factory.

–

No. The outside air tem perature is too hot to determ ine the actual

cause of the problem . Reset the alarm and recheck when the outside air

tem perature is m uch cooler.

–

Ye s . This signal is fed to the gas valve m odulation signal conditioner.

Disconnect the wires from input signal term inals on the signal conditioner

and m easure the voltage on the wires. Is it the sam e as the voltage

com ing from the controller?

–

No. There is an open in the wiring from the controller output. Correct

wiring and reconnect the wires to the term inals on the signal

conditioner. Be sure the ground wire from the controller output

term inal is connected to the signal conditioner's negative term inal.

–

Yes. Continue.

4. Is there 24VAC on the signal conditioner power term inals?

–

No . Determ ine cause and rectify.

Ye s . Continue.

5. Is there twice the DC voltage on the signal conditioner's output term inals as

there is on the signal conditioner's input term inals?

–

No . Replace the signal conditioner.

Ye s . Continue.

6. Is the DC voltage on the m odulating valve term inals the sam e as the DC

voltage on the signal conditioner's output term inals?

–

No . There is a break in the wiring between the signal conditioner and the

m odulating valve term inals. Determ ine cause and rectify.

–

Ye s . The electronics are working to this point. Continue.

7. Is there sufficient tem perature rise for the am ount of outside air that is being

delivered to the space?

–

No . Follow the instructions in this m anual for placing the unit in Manual

dam per control m ode. Adjust the Man. Vent setpoint to 20% outside air. Is

there sufficient tem perature rise for the am ount of outside air that is being

delivered to the space?

–

No. Contact the factory.

Yes. Continue.

–

Ye s . Continue.

8. Verify there is sufficient inlet gas pressure. Verify the m odulating valve is

properly adjusted. Verify the burner orifices are clear of obstruction. Contact

the factory.

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Diagnostics

SOLUTION: If burner was not operating prior to shutdow n (check prior

alarm log)

1. Is there a prior alarm such as Safety Ckt., Airflow Sw., or Flam e Failure?

–

Ye s . See the Diagnostic section for the previous alarm .

No . Continue.

2. Is the room air (Room Tem p) displayed on the BACview rem ote, reading

150°F or m ore?

–

Ye s . The sensor circuit or the sensor itself is shorted. Unplug the input

jack from the AdaptAire controller. Did the display change to -40°F or less?

–

No. There is a short in the controller input. Replace the controller.

Yes. Disconnect the sensor wiring at the sensor. Connect an ohm m eter

to the sensor. If it is shorted replace the sensor. At 70°F the resistance

should be 10K?. See therm istor output curve for other tem peratures. If

it is not shorted, there is a short in the wiring between the sensor and

the input plug. Determ ine cause and rectify. Refer to Appendix II for a

typical 10K? therm istor output curve.

–

No . Continue.

3. Is the discharge air tem perature (DA Tem pt), displayed on the BACview

rem ote, reading -40°F or less?

–

Ye s . The discharge air tem perature sensor circuit or the sensor itself is

open. J um per the input for the sensor. Did the display change to 150°F or

m ore?

–

No. There is an open in the controller input. Replace the controller.

Yes. Disconnect the discharge air tem perature sensor wiring at the

sensor. Connect an ohm m eter to the sensor. If it is open replace the

sensor. At 70°F the resistance should be 10K?. See therm istor output

curve for other tem peratures. If it is not open, there is a break in the

wiring between the sensor and the input plug. Determ ine cause and

rectify.

–

No . Continue

4. Reset the alarm . Check and note the DC voltage at controller's analog output

for the heating signal. Set the Heating Setpoint for 90°F. Set the HTG MAX DA

and HTG MIN DA Setpoints for 130°F. Did the Burner VDC, displayed on the

BACview rem ote, increase?

–

No . Unless the outside air tem perature is extrem ely warm the Burner VDC

should have increased to 7.5VDC or m ore. Close the m anual m ain gas

valve closest to the burner and m easure the discharge air tem perature. Is

it less than 130°F?

–

Yes. There is a problem with the controller program or controller itself.

Contact the factory.

–

No. The outside air tem perature is too hot to determ ine the actual

cause of the problem . Reset the alarm and recheck when the outside air

tem perature is m uch cooler.

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Diagnostics

–

Ye s . This signal is fed to the signal conditioner. Disconnect the wires from

the signal conditioner's input signal term inals and m easure the voltage on

the wires. Is it the sam e as the voltage com ing from the controller?

–

No. There is an open in the wiring from the controller output. Correct

wiring and reconnect the wires to the term inals on the signal

conditioner. Be sure the wire from the controller's ground term inal is

connected to the signal conditioner's ground term inal.

–

Yes. Continue.

5. Is there 24VAC on the signal conditioner power term inals?

–

No . Determ ine cause and rectify.

Ye s . Continue.

6. Is there twice the DC voltage on the signal conditioner's output term inals as

there is on the signal conditioner's input term inals?

–

No . Replace the signal conditioner.

Ye s . Continue.

7. Is the DC voltage on the m odulating valve term inals the sam e as the DC

voltage on the signal conditioner's output term inals?

–

No . There is a break in the wiring between the signal conditioner and the

m odulating valve term inals. Determ ine cause and rectify.

–

Ye s . The electronics are working to this point. Continue.

8. Is there sufficient tem perature rise for the am ount of outside air that is being

delivered to the space?

–

No . Follow the instructions in this m anual for placing the unit in Manual

dam per control m ode. Adjust the Man. Vent setpoint to 20% outside air. Is

there sufficient tem perature rise for the am ount of outside air that is being

delivered to the space?

–

No. Contact the factory.

Yes. Continue.

–

Ye s . Continue.

9. Verify there is sufficient inlet gas pressure. Verify the m odulating valve is

properly adjusted. Verify the burner orifices are clear of obstruction. Contact

the factory.

FAULT CODE: Safety Circuit Open

PROBLEM:The controller has detected a failure in the safety circuit.

SOLUTION: If fan is not running (check prior alarm log)

1. Is there a prior alarm such as Unit On/Fan Off or Airflow Sw?

–

Ye s . See the Diagnostic section for the previous alarm .

No . Continue.

2. Set Unit Mode to Manual. Did fan start?

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Diagnostics

–

No . See the Diagnostic section for Unit On/Fan Off.

Ye s . Continue.

SOLUTION:If fan is running (check prior alarm log)

1. Is the high tem perature lim it tripped?

–

Ye s . Determ ine cause and rectify.

No . Continue.

2. Is the low gas pressure switch closed?

–

No . Verify the inlet gas pressure is as specified on the gas piping diagram .

The low gas pressure switch setpoint should not be adjusted. The inlet gas

pressure m ust rem ain as specified when unit fires at full input. Correct gas

pressure and reset switch. If the switch cannot be reset, replace it. See

Installation, Operation and Owners Manual for m ore inform ation.

–

Ye s . Continue.

3. Is the high gas pressure switch closed?

–

No . Verify the firing rate pressure at full input is as specified on the unit

rating plate. The high gas pressure switch setpoint should not be adjusted.

The firing rate pressure m ust rem ain as specified when unit fires at full

input. Correct gas pressure and reset switch. If the switch cannot be reset,

replace it. See Installation, Operation and Maintenance Manual for m ore

inform ation.

–

Ye s . Continue.

4. Is the safety circuit relay energized?

–

No . Check for loose wiring and rectify.

Ye s . Continue.

5. Is the safety circuit relay's norm ally open contact closed?

–

No . Replace the relay.

Ye s . Continue.

6. Is there continuity at the controller between the safety status term inals?

–

No . There is an open in the wiring between these term inals. Determ ine

cause and rectify.

–

Ye s . Replace controller.

FAULT CODE:Burner Status

PROBLEM: The controller has activated the burner enable output, but the

burner status input is not receiving a signal that the burner is on.

SOLUTION:Inspect burner control circuit and burner

1. Is there a prior alarm such as Unit On/Fan Off, Airflow Sw., or Safety Circuit?

–

Ye s . See the Diagnostic section for the previous alarm .

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Diagnostics

–

No . Continue.

2. Is the burner enable relay energized?

–

No . There is an open in the 24VAC circuit. Determ ine cause and rectify.

Ye s . Continue.

3. Is the burner enable relay's norm ally open contact closed?

–

No . Replace relay.

Ye s . Continue.

4. Is there a pilot flam e present?

–

No . Refer to the Installation, Operation and Maintenance Manual for

guidance in troubleshooting the flam e relay or ignition m odule.

–

Ye s . Continue.

5. Is the flam e relay or ignition m odule m ain valve term inal energized?

–

No . Refer to the Installation, Operation and Maintenance Manual for

guidance in troubleshooting the flam e relay or ignition m odule.

–

Ye s . Continue.

6. Is the gas valve/burner status relay energized?

–

No . There is an open in the m ain valve control circuit. Determ ine cause

and rectify.

–

Ye s . Continue.

7. Is the gas valve/burner status relay's norm ally open contact closed?

–

No . Replace relay.

Ye s . Continue.

8. Is there continuity at the controller between the burner status term inals?

–

No . There is an open in the wiring between these term inals. Determ ine

cause and rectify.

–

Ye s . Replace controller.

FAULT CODE: Burner Hand

PROBLEM: The controller has not activated the burner enable output, but

the burner status input is receiving a signal that the burner is on.

SOLUTION:Inspect burner control circuit. This fault has the potential to

be a very serious problem . Close the m anual gas valves im m ediately if

the fan is not running.

1. Is the controller's burner enable output LED lit?

–

Ye s . Close m anual gas valves. There is a problem with the controller

program . Contact factory.

–

No . Continue.

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Diagnostics

2. Are the m ain autom atic gas shutoff valves energized?

–

No . The m ain autom atic gas shutoff valves are leaking. Turn off unit and

close m anual gas valves. Determ ine cause of valve failure and rectify.

–

Ye s . Continue.

3. Is the flam e relay energized?

–

No . There is a short in the wiring of the gas valves. Close m anual gas

valves. Determ ine cause of short and rectify.

–

Ye s . Continue.

4. Is the burner enable relay energized?

–

Ye s . There is a short in the wiring of the flam e relay. Close m anual gas

valves. Determ ine cause of short and rectify.

–

No . Continue.

5. Is the burner enable relay's norm ally open contact closed?

–

Ye s . Close m anual gas valves. Replace the relay.

No . Continue.

6. Unplug the input term inals from the input jack. Is there continuity at the

controller between the burner status term inals?

–

No . Close m anual gas valves. There is a short in the wiring between the

burner status relay and the burner status term inals. Determ ine cause and

rectify.

–

Ye s . Close m anual gas valves. Replace the controller.

FAULT CODE: Flam e Failure

Note: This fault code is not applicable to all unit types.

PROBLEM:The controller has received a signal from the flam e relay

indicating a flam e failure.

SOLUTION:Investigate flam e relay

1. Is there a prior alarm such as Unit On/Fan Off, Airflow Sw., or Safety Circuit?

–

Ye s . See the Diagnostic section for the previous alarm .

No . Continue.

2. See flam e relay troubleshooting inform ation in unit Installation, Operation,

and Maintenance Manual.

Diagnostics - Non-Critical Fault Codes

This section should assist the user in troubleshooting non-critical fault code

m essages that have been displayed on the local user interface. Most of these

faults are autom atically reset once the fault is corrected or condition changes.

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Diagnostics

FAULT CODE: Unit off/ Fan on

PROBLEM: The controller has not activated the unit enable output to start the

fan, but the fan status input, is receiving a signal that the fan is running. This fault

will autom atically clear about 15 seconds after the fault is corrected.

SOLUTION: If fan is running

1. Is controller unit enable output LED for lit?

–

Ye s . There is a problem with the controller program . Call factory.

No . Continue.

2. Is controller output contact for the unit enable output closed?

–

Ye s . Turn off the power to the controller and recheck. If contact is still

closed the controller output is shorted. Replace the controller.

–

No . Continue.

3. Is the unit enable relay energized?

–

Ye s . There is a short or jum per in the wiring. Determ ine cause and rectify.

No . Continue.

4. Is m otor starter energized?

–

Ye s . There is a short or jum per in the wiring. Determ ine cause and rectify.

No . Continue.

5. Is the fan status relay energized?

–

Ye s . There is a short or jum per in the wiring. Determ ine cause and rectify.

No . Continue.

6. Is the fan status relay's norm ally open contact, closed?

–

Ye s . Replace relay.

No . Continue.

7. Is there continuity between at the controller between the fan status

term inals?

–

Ye s . There is a short in the wiring between these term inals. Determ ine

cause and rectify.

–

No . Replace controller.

SOLUTION: If fan is not running

1. Is the fan status relay's norm ally open contact, closed?

–

Ye s . Replace relay.

No . Continue.

2. Is there approxim ately 5VDC at both controller term inals used for the fan

status?

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Diagnostics

–

Ye s . There is a short in the wiring between these term inals. Determ ine

cause and rectify.

No . Replace controller.

FAULT CODE:Unit on/ Fan off

PROBLEM:The controller has activated the unit enable output to start the fan, but

the fan status input, is not receiving a signal that the fan is running. This fault will

autom atically clear about 60 seconds after the fault is corrected. Turning the unit

off and then on will clear this fault at any tim e.

SOLUTION:If fan/ m otor is running

1. Is the BACview rem ote indicating an alarm ?

–

Ye s . Check previous alarm s and continue.

bContinue.

2. Is the m otor starter's norm ally open auxiliary contact, closed?

–

No . Replace contact.

Ye s . Continue.

3. Are the high and low velocity airflow switch contacts, closed?

–

No . Are the belts on and is the fan m otor.

–

Yes. Contact factory. Do not adjust the switches setpoints.

No. Determ ine cause and rectify.

–

Ye s . Continue.

4. Is the fan status relay energized?

–

No . There is an open or break in the wiring. Determ ine cause and rectify.

Ye s . Continue.

5. Is the fan status relay's norm ally open auxiliary contact, closed?

–

No . Replace relay.

Ye s . Continue.

6. Is there continuity at the controller between the fan status term inals?

–

No . There is an open in the wiring between these term inals. Determ ine

cause and rectify.

–

Ye s . Replace controller.

SOLUTION: If fan/ m otor is not running

1. Is the BACview rem ote indicating an alarm ?

–

Ye s . Check previous alarm s and continue.

No . Continue.

2. Is controller output LED for the unit enable output lit?

No . There is a problem with the controller. Replace controller.

–

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Diagnostics

–

Ye s . Continue.

3. Is the unit enable relay energized?

–

No . There is an open in the wiring between these term inals. Determ ine

cause and rectify.

–

Ye s . Continue.

4. Is the unit enable relay's norm ally open contact, closed?

–

No . Replace relay.

Ye s . Continue.

5. Is the m otor overload relay tripped?

–

Ye s . Determ ine cause, rectify and reset.

No . Continue.

6. Is the m otor starter energized?

–

No . There is an open or break in the wiring. Determ ine cause and rectify.

Ye s . Check m otor and m otor wiring.

FAULT CODE: Check Airflow Sw itches

PROBLEM: The controller has activated the unit enable output to start the fan,

and detected that the fan is running from a signal at the fan status input.

Subsequently, the controller has detected a m om entary opening of the fan status

input. The m om entary opening m ust occur within two seconds of the previous

closure for this fault to occur. This fault requires the operator to correct the

condition and reset the alarm before norm al unit operation resum es.

SOLUTION:If high airflow sw itch is opening. Do not adjust the sw itch

setpoints

1. Are all of the filters in place?

–

No . Install filters and continue.

Ye s . Continue.

2. Does the external static pressure m atch that listed on the rating plate?

–

No . Verify all associated ductwork is installed and continue.

Ye s . Continue.

3. Does the fan RPM m atch that listed on the Spec. Sheet?

–

No . Correct to reduced fan speed and continue.

Ye s . Continue.

4. Are the airflow switches' sensing tubes obstructed?

–

Ye s . Clear and continue.

No . Continue.

5. Contact factory.

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Diagnostics

SOLUTION:If low airflow sw itch is opening. Do not adjust the sw itch

setpoints

1. Does low airflow switch open when the burner is off

–

No . Disconnect both pressure sensing tubes from one of the airflow

switches and m easure the differential pressure by connecting the high

sensing port of a m anom eter to one of the airflow sensing tubes and the

low sensing port to the other. Is the differential pressure approxim ately

the m idpoint between the high and low airflow switch setpoints?

–

No. Close the profile opening until the differential pressure is

approxim ately the m idpoint between the high and low airflow switch

setpoints. Reconnect the sensing tubes, restart the burner, and verify

the airflow switch rem ains closed when the burner is at the m axim um

rated input. Continue.

–

Yes. Continue.

2. Are all of the filters dirty?

–

Ye s . Install clean filters and continue.

No . Continue.

3. Does the external static pressure m atch that listed on the rating plate?

–

No . Verify all associated ductwork is installed as designed, and there are

no obstructions. Continue.

–

Ye s . Continue.

4. Does the fan RPM m atch that listed on the Spec. Sheet?

–

No . Correct to increased fan speed and continue.

Ye s . Continue.

5. Are the airflow switches' sensing tubes obstructed?

–

Ye s . Clear and continue.

No . Continue.

6. Contact factory.

FAULT CODE: Clogged Filter Sw itch

PROBLEM: The filter air pressure switch has closed between the appropriate

term inals on the unit's term inal strip located in the unit's m ain control panel

indicating a clogged filter. See the Typical Wiring Schem atic, Multiplexed Input,

and Clogged Filter sections of this m anual for m ore inform ation.

SOLUTION:If clogged filter sw itch is closing.

1. Are the filters dirty?

–

Ye s . Install clean filters and continue.

No . Continue.

2. Are the airflow switch sensing tubes obstructed?

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Diagnostics

–

Ye s . Clear and continue.

No . Continue.

3. Is the airflow switch setpoint properly adjusted?

–

No . Adjust setpoint.

Ye s . Continue.

4. Are the wires connected to the air pressure switch's norm ally open contact?

–

No . Rewire switch and continue.

Ye s . Continue.

5. Is the air pressure switch's norm ally open contact open?

–

No . Disconnect the sensing tubes and recheck. Replace the switch if

contacts do not open.

–

Ye s . Continue.

6. Find the clogged filter switch on the electrical schem atic and identify the

control panel term inals to which it is connected. Disconnect the wire from

these term inals. Does this clear the alarm ?

–

Ye s . There is short in the wiring between the term inal strip and the switch.

Determ ine cause and rectify.

–

No . Continue.

7. Unplug the connector from the controller that is connected to the m ultiplexed

input. Does this clear the alarm ?

–

Ye s . There is short in the wiring of the m ultiplexed resistors. Determ ine

cause and rectify.

–

No . There is an internal short in the controller. Replace the controller.

FAULT CODE:Energy Save Mode 1

PROBLEM: The controller has turned off the burner enable output because it

determ ined the m ixed air tem perature is equal to or greater than the m inim um

discharge air tem perature setpoint, and the room air tem perature is 5°F above

the room air tem perature setpoint. See the Energy Savings Mode 1 section of this

m anual for m ore inform ation.

SOLUTION:If setpoints are m isadjusted

1. Is the m ixed air tem perature (MA Tem p), displayed on the BACview rem ote,

greater than or equal to the m inim um discharge air tem perature setpoint?

–

Ye s . Increase the HTG MIN DAT setpoint. See Heating Mode - General

Burner Control section of this m anual for m ore inform ation.

–

No . Continue.

2. Is the room tem perature m ore than 5°F above the room air tem perature

setpoint?

–

Ye s . Increase the HTG OCCUPIED setpoint. See Heating Mode - General

Burner Control section of this m anual for m ore inform ation.

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Diagnostics

–

No . Continue.

SOLUTION:If setpoints are not m isadjusted

1. Is there a prior alarm such as Insufficient OA?

–

Ye s . See the Diagnostic section for the previous alarm .

No . Continue.

2. Is the discharge air tem perature (DA Tem p), displayed on the BACview

rem ote, reading 150°F or m ore?

–

Ye s . That sensor circuit or the sensor itself is shorted. Unplug the input

jack from the AdaptAire controller. Did the display change to -40°F or less?

–

No. There is a short in the controller input. Replace the controller.

Yes. Disconnect the sensor wiring at the sensor. Connect an ohm m eter

to the sensor. If it is shorted replace the sensor. At 70°F the resistance

should be 10K?. See therm istor output curve for other tem peratures. If

it is not shorted, there is a short in the wiring between the sensor and

the input plug. Determ ine cause and rectify. Refer to Appendix II for a

typical 10K? therm istor output curve.

–

No . Contact factory.

FAULT CODE:Energy Save Mode 2

PROBLEM: The controller has turned off the burner enable output because it

determ ined the burner's m inim um firing rate exceeds the allowable equivalent

tem perature rise. See the Energy Savings Mode 2 section of this m anual for m ore

inform ation.

SOLUTION: If OAT, Room T or DAT are such that heat is required

1. Are the outside air hood filters or bird screen or any associated outside air

ductwork obstructed?

–

Ye s . Clear obstruction or change filters.

No . Continue.

2. Are the outside air and return air dam pers and actuators working properly?

–

Ye s . Continue.

No . Make necessary adjustm ents and force the unit to recalibrate. See

Calibrate in the Resets Section of this m anual.

3. If equipped, are the flow m easuring station pitot tubes and pressure tubing

clear?

–

Ye s . Continue.

No . Clean and force the unit to recalibrate. See Calibrate in the Resets

Section of this m anual.

4. Do the dam pers track with a change in the %OA setpoint? The dam pers

utilized on the unit are not linear with respect to airflow and openness, and as

such, the proportion of outside air to dam per m ovem ent will not be exactly

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Diagnostics

equal to the %OA setpoint. However, at 20% OA the dam pers should be at

least ½" open.

–

Ye s . Continue.

No . Check the dam per m otor and linkage connections. When 24VAC is

powering the dam per actuator and the control signal is 0VDC, the outside

air dam per should be close to a "rattle tight" position and the return air

dam per should be open. If the 24VAC power is rem oved, the actuator will

draw the outside air dam per tightly closed and the return air dam per

tightly open. When 24VAC is powering the dam per actuator and the

control signal is 10VDC, the outside air dam per should be fully open and

the return air dam per should be closed.

5. Is there approxim ately 24VAC at the COM and EXC term inals on the airflow

station pressure transducer?

–

Ye s . Continue.

No . Is there 120VAC on the prim ary side of the low voltage transform er

and 24VAC volt at the transform er secondary?

–

Yes. There is an open in the wiring between the transform er and the

transducer. Locate the wiring problem and rectify.

–

No. If there is 120VAC on the prim ary and 0VAC on the secondary,

replace the transform er. If there is 0VAC on the prim ary, there is an

open in the wiring supplying power to the transform er. Locate the

wiring problem and rectify.

6. Rem ove both of the plastic tubes from the airflow station pressure transducer

and gently blow into the HIGH side port. Caution: The transducer is extrem ely

sensitive. Blowing too hard into the sensing tube m ay dam age the

transducer. Is there approxim ately 5VDC across the COM and OUT term inals

of the pressure transducer?

–

Ye s . Continue.

No . The pressure transducer is defective. Replace it.

7. Rem ove both of the plastic tubes from the airflow station pressure transducer

and gently blow into the HIGH side port. Caution: The transducer is extrem ely

sensitive. Blowing too hard into the sensing tube m ay dam age the

transducer. Is there approxim ately 5VDC across the controller input term inals

that are connected to the transducer?

–

Ye s . There is a problem with the controller. Replace it.

No . There is an open in the wiring between these pressure transducer and

the AdaptAire controller term inals. Locate and rectify.

FAULT CODE:Energy Save Mode 3

PROBLEM: The controller has turned off the burner enable output because it

determ ined the inlet air tem perature exceeds the Econom izer setpoint. See the

Energy Savings Mode 3 section of this m anual for m ore inform ation.

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Diagnostics

SOLUTION: If OAT, Room T or DAT are such that heat is required

1. Is the outside air tem perature (OA Tem p), displayed on the BACview rem ote,

reading 150°F or m ore?

–

Ye s . The outside air sensor circuit or the sensor itself is shorted.

Unplug the input jack from the AdaptAire controller. Did the display

change to -40°F or less?‘

–

No. There is a short in the controller input. Replace the controller.

Yes. Disconnect the sensor wiring at the sensor. Connect an ohm m eter

to the sensor. If it is shorted replace the sensor. At 70°F the resistance

should be 10K?. See therm istor output curve for other tem peratures. If

it is not shorted, there is a short in the wiring between the sensor and

the input plug. Determ ine cause and rectify. Refer to Appendix II for a

typical 10K? therm istor output curve.

2. Is the outside air sensor in the direct sunlight?

–

Ye s . Provide shade for the sensor so the direct sun does not affect it.

No . Contact factory.

SOLUTION: If setpoints are m isadjusted

1. Is the Econm zr Setpoint set for 80°F?

–

Ye s . The outside air tem perature is over 80°F and there should be no need

for heat. If this is not the case, contact factory.

–

No . Increase the ECONMZR SP setpoint. See Heating Mode - Energy

Savings Mode 3 section of this m anual for m ore inform ation.

FAULT CODE:Insufficient OA

PROBLEM: The controller has turned off the burner enable output because the

percentage of outside air has dropped below 20% for m ore than five m inutes,

and the unit is in the Heating m ode.

SOLUTION:If heat is desired

1. Are the outside air hood filters or bird screen or any associated outside air

ductwork obstructed?

–

Ye s . Clear obstruction or change filters.

No . Continue.

2. Are the outside air and return air dam pers and actuators working properly?

–

Ye s . Continue.

No . Make necessary adjustm ents and force the unit to recalibrate. See

Calibrate in the Resets Section of this m anual.

3. Are the flow m easuring station pitot tubes and pressure tubing clear?

–

Ye s . Continue.

No . Clean and force the unit to recalibrate. See Calibrate in the Resets

Section of this m anual.

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Diagnostics

4. Do the dam pers track with a change in the %OA setpoint? The dam pers

utilized on the unit are not linear with respect to airflow and openness, and as

such, the proportion of outside air dam per m ovem ent will not be exactly

equal to the %OA setpoint. However, at 20% OA the dam pers should be

approxim ately ½" open.

–

Ye s . Continue.

No . Check the dam per m otor and linkage connections. When 24VAC is

powering the dam per actuator and the control signal is 0VDC, the outside

air dam per should be close to a "rattle tight" position and the return air

dam per should be open. If the 24VAC power is rem oved, the actuator will

draw the outside air dam per tightly closed and the return air dam per

tightly open. When 24VAC is powering the dam per actuator and the

control signal is 10VDC, the outside air dam per should be fully open and

the return air dam per should be closed.

5. Is there approxim ately 24VAC at the COM and EXC term inals on the airflow

station pressure transducer?

–

Ye s . Continue.

No . Is there 120VAC on the prim ary side of the low voltage transform er

and 24VAC volt at the transform er secondary?

–

Yes. There is an open in the wiring between the transform er and the

transducer. Locate the wiring problem and rectify.

–

No. If there is 120VAC on the prim ary and 0VAC on the secondary,

replace the transform er. If there is 0VAC on the prim ary, there is an

open in the wiring supplying power to the transform er. Locate the

wiring problem and rectify.

6. Rem ove both of the plastic tubes from the airflow station pressure transducer

and gently blow into the HIGH side port. Caution: The transducer is extrem ely

sensitive. Blowing too hard into the sensing tube m ay dam age the

transducer. Is there approxim ately 5VDC across the COM and OUT term inals

of the pressure transducer?

–

Ye s . Continue.

No . The pressure transducer is defective. Replace it.

7. Rem ove both of the plastic tubes from the airflow station pressure transducer

and gently blow into the HIGH side port. Caution: The transducer is extrem ely

sensitive. Blowing too hard into the sensing tube m ay dam age the

transducer. Is there approxim ately 5VDC across the controller input term inals

that are connected to the transducer?

–

Ye s . There is a problem with the controller. Replace it.

No . There is an open in the wiring between these pressure transducer and

the AdaptAire controller term inals. Locate and rectify.

SOLUTION:If less outside air is desired

1. Is heat required?

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Diagnostics

–

Ye s . The AdaptAire control system m ust be in the Heating m ode. In this

m ode the sm allest allowable am ount of outside air is 20%. Verify the

system is in the Heating m ode and the MIN VENT SP is set for 20%. See

Heating/Cooling Mode and Minim um Ventilation Sections of this m anual.

–

No . Continue.

2. Is cooling or ventilation required?

–

Ye s . The AdaptAire control system m ust be in the Ventilation/Cooling

m ode. In this m ode the sm allest allowable am ount of outside air is 0%.

Verify the system is in the Cooling m ode and the MIN VENT SP is set for

the desired percent of outside air. See Heating/Ventilating/Cooling Mode

and Minim um Ventilation Sections of this m anual.

–

No . Contact factory.

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Menu Selection

Menu Selection Tree for BACview

This section will assist the user in navigating the m enu functions of the control

program . For convenience Hotkeys are provided to allow the user to jum p

directly to a specific m enu heading. Sim ply press and hold the FN key. While

holding the FN key, press the num ber key of the desired m enu, and it will appear.

The num ber key associated with the m enu heading is shown below. Links to

other m enu headings are also available by pressing one of the 4 keys located

directly below the screen.

Figure 4. Menu selection tree for BACview

UNIT MODES HOTKEY - 2

Au t o /Off/Ma n

•

Auto

Off

Manual

Da m p e r Mo d e

•

MA Tem p Ctrl

Bldg Pressure Ctrl

Manual Ctrl

Ho m e

Se t p o in t s

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Menu Selection

S t a t u s

Ala rm

SET POINTS HOTKEY - 3

Htg Occupied

Htg Setback

Htg Min DA

Htg Max DA

Clg Occupied

Clg Setback

Clg Min DA

Clg Max DA

Man Vent

°F

range 55-90

range 40-80

range 40-130

range 55-130

range 61-96

range 75-130

range 40-130

range 55-130

range 0-100

range 30-80

range -0.05-+0.05

range 0-100

range 40-80

range 35-80

°F

%OA

°F

Mixed Air

Bldg Prs

"WC

Min Vent

Economizer Temp °F

Freeze Stat

Home

°F

Status

Alarm

Resets

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Menu Selection

STATUS MENU HOTKEY - 4

Note: The Status Menu always displays the current status of the fan, burner and

cooling.

Room Temp

OA Temp

DA Temp

MA Temp

Outside Air

Bldg Pres

Fan Cycles

Fan Hours

Bnr Cycles

Bnr Hours

Clg Cycles

Clg Hours

Damper

°F

"wc

VDC

Burner

VCD

Safety Ckt

ActEQ Temp

MaxEQ Temp

User In

Open/Closed

°F

User Out

Home

Alarm

Resets

Schedules

ALARM HOTKEY - 1

Alarm History (64 Most Recent)

•

Active Critical Alarm s

Active Non-Critical Alarm s

Alarm s Return-To-Norm al

RESETS HOTKEY - 6

Ala rm

Bu rn e r Re s e t

Fa n Co u n t

Co o lin g Re s e t

Ca lib ra t e

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Menu Selection

Ho m e

Sch e d u le s

Clo ck Se t

He lp

SCHEDULES HOTKEY- 7

Da ily

–

Schedule1 (typical 1 through 4)

–

Use — yes/no

Start Tim e — hr:m in

Stop Tim e— hr:m in

DAYS — SUN, MON, TUE, WED, THU, FRI, SAT

Hom e

Logout

Ho lid ay

Holiday1 (typical 1 through 12)

–

Use yes/no

Start Tim e hr:m in

Stop Tim e hr:m in

Month (1-12)

Day(1-31)

Hom e

Logout

Ove rrid e

Override1 (typical 1 through 2)

–

Use yes/no

Start Tim e hr:m in

Stop Tim e hr:m in

Month (1-12)

Day (1-31)

Hom e

Logout

USER CONFIGURABLE OUTPUT HOTKEY - 8

P ID Se le c t — Direct Acting/Reverse Acting

Hig h In p u t Va lu e

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Menu Selection

Low Ou t p u t Va lu e

Us e r Co n t ro l Se t p o in t

Ma xim u m Us e r Se t p o in t

Min im u m Us e r Se t p o in t

Previo u s

Ho m e

Se t p o in t s

He lp

CLOCKSET HOTKEY - 0

Tim e hh:m m :ss

Da t e dd-m m -yy

Previo u s

DST

–

Enable No/Yes

Sou Hem No/Yes

06Beg Apr /02

06End Oct /29

07Beg Apr /01

07End Oct /28

08Beg Apr /06

08End Oct /26

09Beg Apr /05

09En d Oct /25

HELP HOTKEY - 5

Fa n Se q u e n c e

Ro o m Se n s o r

He a t in g Se q u e n c e

Co o lin g Se q u e n c e

Ca lib ra t e Se q u e n c e

Sch e d u le Se q u e n c e

Previo u s

Ho m e

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Menu Selection

Ala rm

Fu e l Se le c t

FUEL SELECT HOTKEY - 9

Fu e l Typ e Natural Gas/Propane

Lo g in

Ho m e

Previo u s

Un it Mo d e s

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Therm ostat Output Curve

10 K Ohm s Therm istor Output Curve

Figure 5. Uses FG.figure#

Typical 10,000 Ohm Thermistor Output Curve

180000

170000

160000

150000

140000

130000

120000

110000

100000

90000

80000

70000

60000

50000

40000

30000

20000

10000

-22 -4

95 104 113 122 131 140 149

Temperature in Degrees F

Figure 6. Uses FG.figure#

Typical 10,000 Ohm Thermistor Output Curve

30000

25000

20000

15000

10000

5000

104

Temperature in Degrees F

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Airflow Station Layout

Figure 7.

Airflow station layout

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I/ O Zone 583 Controller Specifications

POWER REQUIREMENTS. 24VAC ± 10%, 20VA

NETWORK COMMUNICATION

BACnet (native), Modbus RTU, or N2 bus at up to 76.8K baud or 156K baud over

ARCnet. LonWorks using plug-in com m unications board.

USER INTERFACE

MDT: m odulating discharge tem perature control with m anually adjusted

potentiom eter at rem ote panel.

MRT: m odulating room tem perature control with m anually adjusted

potentiom eter at rem ote panel.

MRT-Pro : m odulating room tem perature control with intelligent room

therm ostat.

MRT-Exp e rt : m odulating room tem perature control with intelligent room sensor

and BACview LCD control panel.

MEMORY

1M bytes of flash m em ory and 512K

bytes of non-volatile battery-backed

RAM

REALTIME CLOCK

Battery-backed to keep tim e in event of power failure.

TEMPERATURE OPERATING RANGE

0°F to 130°F, 10% to 95% RH non-condensing

INPUTS/ OUTPUTS

8 Universal Inputs

•

Inputs 1 & 2

–

Dry, therm istor, 0-5VDC

Inputs 3 - 6

–

oDry, therm istor

Inputs 7 & 8

–

1k -10k pot

5 Digital Outputs

Relay contacts rated at 1A Resistive @ 24VAC

–

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I/ O Zone 583 Controller Specifications

–

LED indication

•

3 Analog Outputs

–

0 - 10 VDC

OUTPUT ASSIGNMENTS - ANALOG

AO1 Burner firing rate (to signal conditioner) 0 - 10 VDC

AO2 RA or Mixing Dam per Control/ User Configured 0 - 10VDC

AO3 Unassigned

OUTPUT ASSIGNMENTS - DIGITAL

DO1 Unit Enable

DO2 Burner Enable

DO3 Cooling Enable

DO4 Alarm

DO5 Pilot to Main Flam e Sensor Changeover Switch

INPUT ASSIGNMENTS - UNIVERSAL

IN1 Pressure Transducer for Building Pressure Control or User Configured

IN2 Pressure Transducer for Flow Station

IN3 Multiplexed

•

100% Outside Air/100% Output

Flam e Failure Alarm

Safety Circuit Status

Manual/Mixed Air Dm pr Control

IN4 Multiplexed

•

Auxiliary Unit Enable

Clogged Filter

Fan Status

Burner Status

IN5 Outside Air sensor

IN6 Discharge Air sensor

IN7 Unit Enable/Rem ote Setpoint

IN8 Dam per Control

RNET MRT-Pro or Room Air sensor

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Typical Wiring Schem atic

Figure 8. Non-recirculating w ith evap DFOA and DFIA m odel diagram

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Typical Wiring Schem atic

Figure 9. Non-recirculating w ith evap DFOA and DFIA m odel diagram

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Typical Wiring Schem atic

Figure 10. Recirculating DFOA and DFIA m odel diagram s

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Typical Wiring Schem atic

Figure 11. Recirculating DFOA and DFIA m odel diagram

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Typical Wiring Schem atic

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Literature Order Num ber

Date

MUA-SVP01A-EN

January 2007

New

Supersedes

Tran e

A business of Am erican Standard Com panies

w w w.trane.com

Trane has a policy of continuous product and product data im provem ent and reserves the right to

change design and specifications without notice.

For m ore inform ation, contact your local Trane

office or e-m ail us at com fo[email protected]

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