INSTALLATION
MANUAL
SUNLINE 2000™
SINGLE PACKAGE HEAT PUMP
BQ 036, 048 & 060
EXPORT ONLY
CONTENTS
See the following page for a complete Table of Contents.
NOTES, CAUTIONS AND WARNINGS
The installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes are intended to
clarify or make the installation easier. Cautions are given
to prevent equipment damage. Warnings are given to
alert installer that personal injury and/or equipment dam-
age may result if installation procedure is not handled
properly.
ISO 9001
Certified Quality
Management System
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
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Fig. #
Tbl. #
Pg. #
LIST OF FIGURES
12 ELECTRICAL DATA - BQ036-060 DIRECT DRIVE
Pg. #
W/POWERED CONVENIENCE OUTLET . . . . . . . . . 19
7
13 ELECTRICAL DATA - BQ036-060 BELT DRIVE
14 ELECTRICAL DATA - BQ036-060 BELT DRIVE
OUTLET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
UNIT DIMENSIONS (3 - 5 TON HEAT PUMP)
9
UNIT WITH FIXED OUTDOOR AIR/MOTORIZED
19 SUPPLY AIR BLOWER PERFORMANCE (BQ036
20 SUPPLY AIR BLOWER PERFORMANCE (BQ036
21 SUPPLY AIR BLOWER PERFORMANCE (BQ048
22 SUPPLY AIR BLOWER PERFORMANCE (BQ048
LIST OF TABLES
Tbl. #
Pg. #
23 SUPPLY AIR BLOWER PERFORMANCE (BQ060
9
24 SUPPLY AIR BLOWER PERFORMANCE (BQ060
25 SUPPLY AIR BLOWER PERFORMANCE (BQ036,
APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
26 SUPPLY AIR BLOWER PERFORMANCE (BQ036,
APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
ELECTRICAL DATA - BQ036-060 DIRECT DRIVE
28 BELT DRIVE BLOWER MOTOR AND DRIVE
10 ELECTRICAL DATA - BQ036-060 BELT DRIVE
11 ELECTRICAL DATA - BQ036-060 BELT DRIVE
OUTLET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
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•
•
530.18-N1.14V -Man. Outdoor Air Damper Accy
0 - 100%
GENERAL
YORK Model BQ units are single package heat pumps
equipped with optional factory installed electric heat-
ers. These are designed for outdoor installation on a
rooftop or slab.
035-07364-000 -Motorized Outdoor Air Damper
Accy.
•
•
•
•
035-19422-000 –Electric Heat Accessory
035-19405-000 -Barometric Relief Damper
530.46-N1.1V -Dual Enthalpy Accessory
530.18-N1.10V -Power Exhaust Accessory
The units are completely assembled on rigid, perma-
nently attached base rails. All piping, refrigerant
charge, and electrical wiring is factory installed and
tested. The units require electric power, gas connec-
tion, duct connections, installation of combustion air
inlet hood, flue gas outlet hoods and fixed outdoor air
intake damper (units without economizer or motorized
damper option only) at the point of installation.
RENEWAL PARTS
The supplemental electric heaters have nickel-chrome
elements and utilize single point power connection.
®
Contact your local York parts distribution center for
authorized replacement parts.
SAFETY CONSIDERATIONS
APPROVALS
Due to system pressure, moving parts and electrical
components, installation and servicing of air condition-
ing equipment can be hazardous. Only qualified,
trained, service personnel should install, repair, main-
tain or service this equipment.
Design listed by CSA as follows:
•
For use as a heat pump only with or without
optional electric heat.
Observe all precautions in the literature, on labels and
tags accompanying the equipment whenever working
on air conditioning equipment. Be sure to follow all
other safety precautions that apply.
•
•
For outdoor installation only.
For installation on combustible material.
Wear safety glasses and work gloves, and follow all
safety codes. Use a quenching cloth and have a fire
extinguisher available for all brazing operations.
This product must be installed in strict compli-
ance with the enclosed installation instructions
and any applicable local, state, and national
codes including, but not limited to, building,
electrical, and mechanical codes.
INSPECTION
As soon as a unit is received, it should be inspected for
possible damage during transit. If damage is evident,
the extent of the damage should be noted on the car-
rier's freight bill. A separate request for inspection by
the carrier's agent should be made in writing. Refer to
Form 50.15-NM for additional information.
Improper installation may create a condition
where the operation of the product could cause
personal injury or property damage.
REFERENCE
Additional information on the design, installation, oper-
ation and service of this equipment is available in the
following reference forms:
The installer should pay particular attention to the
words: NOTE, CAUTION and WARNING. Notes are
intended to clarify or make the installation easier. Cau-
tions are given to prevent equipment damage. Warn-
ings are given to alert installer that personal injury and/
or equipment damage may result if installation proce-
dure is not handled properly.
•
•
•
364985 -General Installation
035-19404-000 -Economizer Accessory
530.18-N1.13V -Man. Outdoor Air Damper
Accessory 0 - 35%
4
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PRODUCT NOMENCLATURE
3-5 Ton Sunline Simplicity Model Number Nomenclature
B Q 048 N04 A 2 A AA 1 0 1 2 4 A
Product Category
Product Style
B = HP, Single Pkg., R-22
A = Style A
Product Identifier
Configuration Options (not required for all units)
These four digits will not be assigned until a quote is requested, or an order placed.
Q = 10.0 SEER HP
SS Drain Pan
CPC Controller, DFS, APS
Johnson Controller, DFS, APS
Nominal Cooling Capacity
Honeywell Controller, DFS, APS
036 = 3.0 Ton
048 = 4.0 Ton
060 = 5.0 Ton
Novar Controller, DFS, APS
Simplicity IntelliComfort Controller
Simplicity IntelliComfort Controller w/ModLinc
2" Pleated Filters
Heat Type and Nominal Heat Capacity
BAS Ready Economizer (2-10 V. D. C. Actuator without a Controller)
Any Combination of Additional Options that Don’t Have an Option Code Pre-assigned
C00 = Cooling Only. Suitable for Field
Installed Electric Heat
Product Generation
Electric Heat Options
1 = First Generation
2 = Second Generation
E05 = 5 KW
E07 = 7 KW
E10 = 10 KW
E15 = 15 KW
E20 = 20 KW
E30 = 30 KW
Additional Options
Hinged Filter Door & Toolless Access Cabinet
Standard Cabinet
AA = None
BA = Hinged Filter Door & Toolless Access Panels
BA = Hinged Filter Door & Toolless Access Panels
BB = Phase Monitor, Hinged Filter Door & Toolless
Access Panels
Airflow
AB = Phase Monitor
AC = Coil Guard
AD = Dirty Filter Switch
A = Direct Drive
B = Direct Drive/Single Input Economizer
D = Direct Drive/Motorized Damper
N = Belt Drive
P = Belt Drive/Single Input Economizer
R = Belt Drive/Motorized Damper
T = Belt Drive High Static
AE = Phase Monitor & Coil Guard
AF = Phase Monitor & Dirty Filter Switch
AG = Coil Guard & Dirty Filter Switch
AH = Phase Monitor, Coil Guard & Dirty Filter Switch
AS = Bottom Drain Connection
RC = Coil Guard & American Flag
TA = Technicoat Condenser Coil
TJ = Technicoat Evaporator Coil
TS = Technicoat Evaporator and Condenser Coil
BC = Coil Guard, Hinged Filter Door & Toolless
Access Panels
BD = Dirty Filter Switch, Hinged Filter Door &
Toolless Access Panels
BE = Phase Monitor & Coil Guard, Hinged Filter
Door & Toolless Access Panels
BF = Phase Monitor & Dirty Filter Switch, Hinged
Filter Door & Toolless Access Panels
BG = Coil Guard & Dirty Filter Switch, Hinged Filter
Door & Toolless Access Panels
U = Belt Drive High Static/Single Input Economizer
V = Belt Drive High Static/Motorized Damper
BH = Phase Monitor, Coil Guard & Dirty Filter Switch,
Hinged Filter Door & Toolless Access Panels
Voltage
2 = 208/230-3-60
4 = 460-3-60
5 = 575-3-60
ZZ = If desired option combination is not listed above, ZZ will be assigned and configuration options will be
located in digits 15-18.
Installation Options
A = No Options Installed
B = Option 1
C = Option 2
D = Options 1 & 2
E = Option 3
F = Option 4
G = Options 1 & 3
H = Options 1 & 4
J = Options 1, 2 & 3
K = Options 1, 2, & 4
L = Options 1,3 & 4
M = Options 1, 2, 3, & 4
N = Options 2 & 3
P = Options 2 & 4
Q = Options 2, 3, & 4
R = Options 3 & 4
S = Option 5
T = Options 1 & 5
U = Options 1, 3, & 5
V = Options 1, 4, & 5
W = Options 1, 3, 4, & 5
X = Options 3 & 5
Y = Options 4 & 5
Z = Options 3, 4 & 5
Options
1 = Disconnect
2 = Non-Pwr'd Conv. Outlet
3 = Smoke Detector S.A.
4 = Smoke Detector R.A.
5 = Pwr'd Conv. Outlet
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In Canada:
INSTALLATION
•
•
•
Current Canadian Electrical Code C22.1.
Local plumbing and waste water codes.
Other applicable local codes.
INSTALLATION SAFETY INFORMATION:
Read these instructions before continuing this appli-
ance installation. This is an outdoor combination heat-
ing and cooling unit. The installer must assure that
these instructions are made available to the consumer
and with instructions to retain them for future reference.
Electrical Data table for the unit.
1. Install this unit only in a location and position as
If components are to be added to a unit to meet local
codes, they are to be installed at the dealer's and/or
the customer's expense.
2. This equipment is not to be used for temporary
heating of buildings or structures under construc-
tion.
Size of unit for proposed installation should be based
on heat loss/heat gain calculation made according to
the methods of the Air Conditioning Contractors of
America (ACCA).
LIMITATIONS
These units must be installed in accordance with the
following national and local safety codes:
This unit is not to be used for temporary heating of
buildings or structures under construction.
In U.S.A.:
•
National Electrical Code ANSI/NFPA No. 70.
TABLE 1: UNIT APPLICATION DATA (BQ)
UNIT MODEL NUMBER
036
048
060
208/230
187 / 253
414 / 506
518 / 630
Voltage Variation,
460
1
Min. / Max.
575
Supply Air CFM, Nom.
1200
1600
2000
Wet Bulb Temperature (ºF) of Air on
Evaporator Coil, Min. / Max
57 / 72
0 / 120
Dry Bulb Temperature (ºF) of Air on
Condenser Coil, Min. / Max.
1. Utilization range “A” in accordance with ARI Standard 110.
LOCATION
greater than the unit base rails. Do not tie slab to
the building foundation.
Use the following guidelines to select a suitable loca-
tion for these units.
5. Roof structures must be able to support the weight
of the unit and its options and/or accessories. Unit
must be installed on a solid level roof curb or
appropriate angle iron frame.
1. Unit is designed for outdoor installation only.
2. Condenser coils must have an unlimited supply of
air.
6. Maintain level tolerance to 1/2 inch maximum
across the entire length or width of the unit.
3. Where a choice of location is possible, position the
unit on either north or east side of building.
If a unit is to be installed on a roof curb or special frame
other than a YORK roof curb, gasketing must be
applied to all surfaces that come in contact with the unit
underside.
4. For ground level installation, use a level concrete
slab with a minimum thickness of 4 inches. The
length and width should be at least 6 inches
6
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RIGGING AND HANDLING
A closed return duct system shall be used. This shall
not preclude use of economizers or outdoor fresh air
intake. The supply and return air duct connections at
the unit should be made with flexible joints to minimize
noise.
Exercise care when moving the unit. Do not remove
any packaging until the unit is near the place of installa-
tion. Rig the unit by attaching chain or cable slings to
the lifting holes provided in the base rails. Spreader
bars, whose length exceeds the largest dimension
across the unit, MUST BE USED.
The supply and return air duct systems should be
designed for the CFM and static requirements of the
job. They should NOT be sized to match the dimen-
sions of the duct connections on the unit.
Units may also be moved or lifted with a forklift. Slotted
openings in the base rails are provided for this pur-
pose. Fork lengths must be a minimum of 42 inches.
Remove the nesting brackets from the four corners on
the top of the unit. All screws that are removed when
removing the brackets must be replaced on the unit.
When fastening ductwork to side duct flanges
on unit, insert screws through duct flanges
only. DO NOT insert screws through casing.
Outdoor ductwork must be insulated and
waterproofed.
approximate center of gravity.
side and bottom supply and return air duct openings.
Before lifting a unit, make sure that all panels
are in place and that its weight is distributed
equally on all cables so it will lift evenly.
CONDENSATE DRAIN
Plumbing must conform to local codes. Use a sealing
compound on male pipe threads. Install a condensate
drain line from the 3/4" NPT female connection on the
unit to an open drain.
CLEARANCES
NOTE: The condensate drain operates in a negative
pressure in the cabinet. The condensate drain
line MUST be trapped to provide proper drain-
All units require certain clearances for proper operation
and service. Installer must make provisions for ade-
quate ventilation air. Refer to Dimensions and Clear-
the clearances required for combustible construction,
servicing, and proper unit operation.
Do not permit overhanging structures or shrubs
to obstruct outdoor air discharge outlet, com-
bustion air inlet or vent outlets.
DUCTWORK
Ductwork should be designed and sized according to
the methods in Manual Q of the Air Conditioning Con-
tractors of America (ACCA).
FIGURE 1 - RECOMMENDED DRAIN PIPING
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COMPRESSORS
FILTERS
Units are shipped with compressor mountings factory-
adjusted and ready for operation.
One-inch or two-inch filters can be supplied with each
unit. Filters must always be installed ahead of the
evaporator coil and must be kept clean or replaced with
same size and type. Dirty filters will reduce the capacity
of the unit and will result in frosted coils or safety shut-
down. Minimum filter area and required sizes are
shown in Physical Data Table 7.
Units with scroll compressors have a shipping bracket
which must be removed after the unit is set in place.
See Figure 2.
SERVICE ACCESS
COMPRESSOR
The following removable panels provide access to all
serviceable components:
MOUNTING
BRACKET BASE
•
•
•
•
•
Compressor compartment
Electric Heat compartment
Blower compartment
Main control box
REMOVE THESE
SCREWS (2)
Filter compartment
MOUNTING
BRACKET TOP
(REMOVE)
Refer to the Dimensions and Clearances shown in Fig-
WIRE TIE (CUT AND REMOVE)
FIGURE 2 - COMPRESSOR RESTRAINING
BRACKET
Make sure that all screws and panel latches
are replaced and properly positioned on the
unit to maintain an airtight seal.
Do not loosen compressor mounting bolts.
8
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TYPICAL POWER WIRING
REFER TO THE ELECTRICAL DATA
TABLES TO SIZE THE DISCONNECT
SWITCH, OVERCURRENT PROTEC-
TION AND WIRING.
TYPICAL CONTROL WIRING
COOLING / HEATING (24 VOLT THERMOSTAT)
THERMOSTAT1
TERMINALS
UNIT TERMINAL
STRIP TB1
RH
ADD
JUMPER
RC
Y
R
Y1
Y2
W1
W2
G
24 VOLT
TRANSFORMER
W
G
C
1
24 VOLT THERMOSTAT 2ET07701024. TO CONTROL THE ECONOMIZER ON THE SECOND
STAGE COOLING OR TO HAVE AN ELECTRIC HEAT ACCESSORY WITH TWO STAGES OF
HEAT, USE THERMOSTAT 2TH0471024.
COOLING / HEATING (ELECTRONIC THERMOSTAT)
MULTI STAGE
COOLING / HEATING (ELECTRONIC THERMOSTAT)
SINGLE STAGE
1
THERMOSTAT
THERMOSTAT1
TERMINALS
UNIT TERMINAL
STRIP TB1
UNIT TERMINAL
STRIP TB1
TERMINALS
RC
RH
Y1
24 VOLT
TRANSFORMER
RH
RC
Y
ADD
JUMPER
R
Y1
Y2
W1
W2
G
R
Y1
W1
G
ADD
JUMPER
2
3
Y2
W
W1
G
4
W2
C
G
B
24 VOLT
TRANSFORMER
C
LED 1
X
NOT
USED
LED 2
COM
A1
OCC
1ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET07701024 (INCLUDES SUBBASE).
TO CONTROL THE ECONOMIZER ON SECOND STAGE COOLING, USE THERMOSTAT
2TH04700224.
4
ADD
JUMPER
A2
T
TO REMOTE SENSOR
2TH040702224 IF USED
T
1 ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET04700224 (INCLUDES SUBBASE).
2 SECOND STAGE COOLING IS NOT REQUIRED ON UNITS LESS ECONOMIZER.
3 SECOND STAGE HEATING IS ONLY REQUIRED ON UNITS WITH A TWO STAGE
ELECTRIC HEATER OR 2 STAGE GAS HEAT.
4
REMOVE JUMPER J2 FROM TERMINALS 4 AND 9 ON JUMPER PLUG CONNECTOR
P6 ON UNITS WITH ECONOMIZER. TERMINALS A1 AND A2 PROVIDE A RELAY
OUT-PUT TO CLOSE THE OUTDOOR ECONOMIZER DAMPERS WHEN THE
THERMOSTAT SWITCHES TO THE SET-BACK POSITION.
FIGURE 3 - TYPICAL FIELD POWER & CONTROL WIRING
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THERMOSTAT
The room thermostat should be located on an inside
wall approximately 56 inches above the floor where it
will not be subject to drafts, sun exposure or heat from
electrical fixtures or appliances. Follow the manufac-
turer's instructions enclosed with the thermostat for
general installation procedure. A minimum of seven
color-coded insulated wires (#18 AWG) should be used
to connect the thermostat to the unit.
When connecting electrical power and control
wiring to the unit, waterproof type connectors
MUST BE USED so that water or moisture
cannot be drawn into the unit during normal
operation. The above waterproofing conditions
will also apply when installing a field-supplied
disconnect switch.
POWER AND CONTROL WIRING
appropriate unit wiring diagram for control circuit and
power wiring information.
Field wiring to the unit must conform to provisions of
the National Electrical Code, ANSI / NFPA No. 70 (in
U.S.A.), current Canadian Electrical Code C22.1 (in
Canada) and/or local ordinances. The unit must be
electrically grounded in accordance with NEC and CEC
(as specified above) and/or local codes. Voltage toler-
ances, which must be maintained at the compressor
terminals, during starting and running conditions, are
indicated on the unit Rating Plate and the Unit Applica-
tion Data table.
TABLE 2: CONTROL WIRE SIZES
1
Wire Size
18 AWG
Maximum Length
150 Feet
1. From the unit to the thermostat and back to the unit.
OPTIONS/ACCESSORIES
ELECTRIC HEAT
The internal wiring harness furnished with this unit is
an integral part of a CSA design certified unit. Field
alteration to comply with electrical codes should not be
required.
The factory- or field-installed heaters are wired for sin-
gle point power supply. Power supply need only be
brought into the single point terminal block and thermo-
stat wiring to the low voltage terminal strip located in
the upper portion of the unit control box.
A fused disconnect switch should be field provided for
the unit. The switch must be separate from all other cir-
cuits. Wire entry at knockout openings require conduit
fittings to comply with NEC (in U.S.A.), CEC (in Can-
ada) and/or local codes. If any of the wire supplied with
the unit must be replaced, replacement wire must be of
the type shown on the wiring diagram and the same
minimum gauge as the replaced wire.
These CSA approved heaters are located within the
central compartment of the unit with the heater ele-
ments extending into the supply air chamber. Refer to
Fuses are supplied, where required, by the factory.
Some KW sizes require fuses and others do not. Refer
Use copper conductors properly sized to carry the load.
Each unit must be wired with a separate branch circuit
fed directly from the meter panel and properly fused.
10
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TABLE 3: ELECTRIC HEATER CFM LIMITATIONS
MINIMUM SUPPLY AIR CFM
HEATER SIZE NOMINAL KW
UNIT MODEL SIZE
VOLTAGE
NOMINAL TONS
5
7
10
15
20
30
208/230-1-60
900
900
900
900
-
900
900
900
-
208/230-3-60
460-3-60
900
900
900
900
-
036
(3)
-
900
900
900
-
600-3-60
-
900
900
900
-
208/230-1-60
208/230-3-60
460-3-60
1200
1200
1200
1200
-
1200
1200
1200
1200
1500
1500
1500
1500
1200
1200
1200
1200
1500
1500
1500
1500
1200
1200
1200
1200
1500
1500
1500
1500
-
-
1200
048
(4)
-
-
600-3-60
-
-
208/230-1-60
208/230-3-60
460-3-60
1500
1500
1500
1500
-
1500
1500
1500
1500
1500
060
(5)
-
-
600-3-60
ECONOMIZER/MOTORIZED DAMPER AND RAIN HOOD
ECONOMIZER AND POWER EXHAUST DAMPER
SET POINT ADJUSTMENTS AND INFORMATION
The instruction for the optional economizer/motorized
damper and rain hood can be found in form 035-
07364-000. Use these instructions when field assem-
bling an economizer rain hood onto a unit. The outdoor
and return air dampers, the damper actuator, the
damper linkage, the outdoor and return air divider baf-
fles, and all the control sensors are factory mounted as
part of the “Factory installed” economizer/motorized
damper options.
Remove the economizer access panel from the unit.
Loosen but do not remove the two panel latches.
Locate the economizer control module, where the fol-
lowing adjustments will be made.
POWER EXHAUST/BAROMETRIC RELIEF DAMPER AND
RAIN HOOD
Extreme care must be exercised in turning all
setpoint, maximum, and minimum damper
positioning adjustment screws to prevent twist-
ing them off.
The instructions for the power exhaust/barometric relief
damper and rain hood can be found in form 530.18-
N1.10V.
All of the components, including the dampers, hard-
ware, and mounting instructions are shipped in a single
package external from the unit and must be field
assembled and installed.
Check that the damper blades move smoothly without
binding; carefully turn the Minimum Position Adjusting
screw (found on the damper control module) fully
clockwise and then set the thermostat indoor fan switch
to the on position and then off, or energize and de-
energize terminals “R” to “G”.
Power exhaust is only available as a field installed
accessory.
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MINIMUM POSITION ADJUSTMENT
•
With power exhaust option, each building pressur-
ization requirement will be different. The point at
which the power exhaust comes on is determined
by the economizer damper position (Percent
Open). The Exhaust Air Adjustment Screw should
be set at the Percent Open of the economizer
damper at which the power exhaust is needed. It
can be set from 0 to 100% damper open.
With thermostat set to indoor fan on position, or termi-
nals “R” to “G” energized, turn the Minimum Position
Adjusting screw (located on the damper control mod-
ule) counterclockwise until the desired minimum
damper position has been attained.
ENTHALPY SET POINT ADJUSTMENT
INDOOR AIR QUALITY
The enthalpy setpoint may now be set by selecting the
desired setpoint shown in the Enthalpy Setpoint Adjust-
ment Figure 4. Adjust as follows:
Indoor air quality (indoor sensor input): Terminal AQ
accepts a +2 to +10 Vdc signal with respect to the
(AQ1) terminal. When the signal is below it's setpoint,
the actuator is allowed to modulate normally in accor-
dance with the enthalpy and mixed air sensor inputs.
When the AQ signal exceeds it's setpoint setting and
there is no call for free cooling, the actuator is propor-
tionately modulated from the 2 to 10 Vdc signal, with 2
Vdc corresponding to full closed and 10 Vdc corre-
sponding to full open. When there is no call for free
cooling, the damper position is limited by the IAQ Max
damper position setting. When the signal exceeds it's
setpoint (Demand Control Ventilation Setpoint) setting
and there is a call for free cooling, the actuator modu-
lates from the minimum position to the full open posi-
tion based on the highest call from either the mixed air
sensor input or the AQ voltage input.
•
For a single enthalpy operation carefully turn the
setpoint adjusting screw (found on the damper
control module) to the “A”, “B”, “C” or “D” setting
corresponding to the lettered curve of the Enthalpy
Setpoint Adjustment Figure 4.
•
For a dual enthalpy operation, carefully turn the
setpoint adjusting screw fully clockwise past the
“D” setting.
POWER EXHAUST DAMPER SETPOINT (WITH OR WITH-
OUT POWER EXHAUST)
•
With no power exhaust option, adjust the Exhaust
Air Adjustment Screw fully clockwise.
•
Optional CO Space Sensor Kit Part #
2
2AQ04700324
•
Optional CO Unit Sensor Kit Part # 2AQ04700424
2
Replace the economizer access panel.
12
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CONTROL POINT
APPROX. 0F (0C)
AT 50% RH
CONTROL
CURVE
85 90 95 100 105 110
(29) (32) (35) (38) (41) (43)
A
B
C
D
73 (23)
70 (21)
67 (19)
63 (17)
80
(27)
75
(24)
70
(21)
65
(18)
0
(16)
55
(13)
A
B
50
(10)
C
45
(7)
D
40
(4)
35
(2)
A
B
C
D
40 45
(4) (7)
65 70 75 80
(24) (27)
95
(35)
105 110
(41) (43)
35
(2)
50 55 60
(10) (13) (16)
85 90
(29) (32)
100
(38)
(21)
(18)
APPROXIMATE DRY BULB TEMPERATURE - 0F (0C)
FIGURE 4 - ENTHALPY SETPOINT ADJUSTMENT
Exhaust Air
Adjustment
Screw
EXH
Set
N
P
T
N1
P1
T1
TR
TR1
Exhaust Air LED
Damper Min.
Position
Screw
24
Vac
HOT
24
Vac
COM
EXH
Min
Pos
Indoor Air Quality
Max. Adjustment
Screw
+
IAQ
Max
1
2
Indoor Air Quality
LED
IAQ
AQ1
SO+
AQ
SO
5
4
Indoor Air Quality
Min. Adjustment
Screw
IAQ
Min
3
Free
Cool
Free Cooling LED
SR
B
A
SR+
EF
EF1
C
D
Economizer Enthalpy
Set Point Adjustment
Screw
FIGURE 5 - HONEYWELL ECONOMIZER CONTROL W7212
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BACK OF UNIT
BACK OF UNIT
A
A
7
7
44 /8
44 /8
1
1
82 /4
82 /4
B
F
D
X
X
C
B
E
APPROXIMATE
APPROXIMATE
CENTER OF GRAVITY
CENTER OF GRAVITY
CONDENSER COIL
END OF UNIT
CONDENSER COIL
END OF UNIT
C
D
FRONT OF UNIT
FRONT OF UNIT
Y
Y
FIGURE 6 - FOUR AND SIX POINT LOADING
TABLE 4: CENTER OF GRAVITY (ALL MODELS)
DIMENSION
3 - 5 TON
X
Y
40-¾”
19-¾”
TABLE 5: BQ 4 POINT LOADS WEIGHT DISTRIBUTION
UNIT
TOTAL
A
B
C
D
BQ036
628
139
137
174
177
BQ048
BQ060
668
693
148
154
146
151
185
192
189
196
TABLE 6: BQ 6 POINT LOADS WEIGHT DISTRIBUTION
UNIT
TOTAL
A
B
C
D
E
F
BQ036
628
93
92
91
116
117
119
BQ048
BQ060
668
693
99
98
97
123
128
125
129
126
131
103
102
100
14
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TABLE 7: PHYSICAL DATA
BQ
048
12 X 10
3/4
MODELS
Centrifugal Blower (Dia. x Wd. in.)
036
12 X 10
1/2
060
12 X 10
1
Fan Motor HP (Direct Drive)
Fan Motor HP (Belt Drive)
Fan Motor HP (Belt Drive High Static)
Rows Deep
EVAPORATOR
BLOWER
1 1/2
1 1/2
4
1 1/2
1 1/2
3
1 1/2
2
3
EVAPORATOR
COIL
Fins Per Inch
16
15
15
Face Area (Sq. Ft.)
Propeller Dia. (in.)
Fan Motor Hp
4.3
5.1
5.1
24
22
22
CONDENSER
FANS
1/3
1/2
1/2
4500
1
Nom. CFM
4300
1
4200
1
Rows Deep
CONDENSER
COILS
Fins Per Inch
20
20
20
Face Area (Sq. Ft.)
17.1
17.1
17.1
COMPRESSOR
(Qty. Per Unit)
Reciprocating Type
1
1
1
Quantity Per Unit (15” X 20” X 1” or 2“)
Quantity Per Unit (14” X 25” X 1” or 2“)
Total Face Area (sq. ft.)
2
1
2
1
2
1
AIR
FILTERS
6.6
6.6
6.6
Refrigerant 22
(lbs./oz.)
CHARGE
7/12
9/2
8/4
TABLE 8: OPERATING WEIGHTS (LBS.)
MODEL SIZE
3 TON
4 TON
668
50
5 TON
BASIC UNIT
BQ
628
693
Economizer
Motorized Damper
26
OPTIONS
5 - 7 kW
10 - 15 kW
20 - 30 kW
18
Electric Heater
23
28
Roof Curb
92
ACCY.
Barometric Relief / Fixed Air Damper
Belt-Drive Blower
10
5
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364985-XIM-B-0508
TABLE 9: ELECTRICAL DATA - BQ036-060 DIRECT DRIVE W/O POWERED CONVENIENCE OUTLET
OD Fan Supply
Pwr
Conv
Outlet
Max
Compressors
(each)
2
Motors
(each)
Blower
Motor
Electric Heat Option
Fuse /
Breaker
Size
(Amps)
30
1
Size
(Tons)
MCA
3
Volt
(Amps)
RLA LRA MCC
FLA
FLA
FLA
Model
kW
Stages
Amps
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
E30
None
E05
E07
E10
E15
E20
E30
None
E07
E10
E15
E20
E30
None
E10
E15
E20
E30
-
-
-
21.0
34.9
40.4
48.7
62.3
76.1
21.0
36.9
43.5
52.8
68.8
84.7
10.6
20.8
25.8
31.0
39.9
8.6
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
22.2
-
5.3
7.5
10.6
15.9
21.2
29.6
-
6.8
10.1
13.6
19.5
28.8
-
10.6
15.9
21.2
30.4
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
2
-
1
1
1
2
2
2
-
1
1
2
2
2
-
1
1
2
2
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
40
45
50
70
80
30
45
50
60
70
90
15
25
30
35
40
15
25
30
35
35
50
50
60
70
90
35
50
50
60
80
90
20
25
30
35
45
15
25
30
40
45
60
60
70
80
90
125
45
60
70
70
90
100
125
25
35
35
40
50
70
20
30
35
40
60
208-3-60 11.9 85.0 16.7
1.7
4.4
0.0
230-3-60 11.9 85.0 16.7
1.7
4.4
0.0
036
(3.0)
8.5
460-3-60 5.9 42.0
575-3-60 4.8 34.0
8.2
6.7
1.0
1.0
2.2
2.2
0.0
0.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
21.3
27.7
34.1
25.7
39.6
45.1
53.4
67.0
80.8
25.7
41.6
48.2
57.5
73.5
89.4
13.1
23.3
28.3
33.6
42.4
10.8
23.5
29.9
36.3
33.0
46.9
52.5
60.8
74.3
88.2
110.1
33.0
49.0
55.6
64.9
80.8
96.8
122.0
17.1
27.3
32.3
37.5
46.4
60.4
13.5
26.2
32.6
39.0
50.1
208-3-60 14.7 130.0 23.0
230-3-60 14.7 130.0 23.0
2.3
2.3
5.0
5.0
0.0
0.0
048
(4.0)
8.5
460-3-60 7.7 64.0 12.0
575-3-60 6.4 52.0 10.0
1.3
1.3
2.2
2.2
0.0
0.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
61.6
-
13.3
18.8
26.6
39.9
53.2
74.3
-
208-3-60 19.3 137.0 27.0
2.3
2.3
6.6
6.6
0.0
0.0
230-3-60 19.3 137.0 27.0
060
(5.0)
8.5
12.7
17.1
24.5
36.1
-
10.6
16.0
21.3
30.5
460-3-60 10.0 62.0 14.0
575-3-60 7.9 50.0 11.0
1.3
1.3
3.3
3.3
0.0
0.0
1. Minimum Circuit Ampacity.
2. Dual Element, Time Delay Type.
3. HACR type per NEC.
16
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TABLE 10: ELECTRICAL DATA - BQ036-060 BELT DRIVE W/O POWERED CONVENIENCE OUTLET
OD Fan Supply
Pwr
Conv
Outlet
Max
Compressors
(each)
2
Motors
(each)
Blower
Motor
Electric Heat Option
Fuse /
Breaker
Size
1
Size
(Tons)
MCA
3
Volt
(Amps)
RLA LRA MCC
FLA
FLA
FLA
Model
kW
Stages
Amps
(Amps)
30
40
45
50
70
80
30
45
50
60
70
90
15
25
30
35
45
15
25
30
35
35
50
50
60
70
90
35
50
50
60
80
90
20
25
30
35
45
15
25
35
40
40
60
60
70
80
90
110
40
60
60
70
80
100
125
25
30
35
40
50
60
20
30
35
40
50
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
E30
None
E05
E07
E10
E15
E20
E30
None
E07
E10
E15
E20
E30
None
E10
E15
E20
E30
-
-
-
21.8
35.7
41.2
49.5
63.1
76.9
21.8
37.7
44.3
53.6
69.6
85.5
11.0
21.2
26.2
31.4
40.3
8.8
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
22.2
-
5.3
7.5
10.6
15.9
21.2
29.6
-
6.8
10.1
13.6
19.5
28.8
-
10.6
15.9
21.2
30.4
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
2
-
1
1
1
2
2
2
-
1
1
2
2
2
-
1
1
2
2
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
208-3-60 11.9 85.0 16.7
1.7
5.2
0.0
230-3-60 11.9 85.0 16.7
1.7
5.2
0.0
036
(3.0)
8.5
460-3-60 5.9 42.0
575-3-60 4.8 34.0
8.2
6.7
1.0
1.0
2.6
2.0
0.0
0.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
21.5
27.9
34.3
25.9
39.8
45.3
53.6
67.2
81.0
25.9
41.8
48.4
57.7
73.7
89.6
13.5
23.7
28.7
34.0
42.8
11.0
23.8
30.2
36.5
31.6
45.5
51.1
59.4
72.9
86.8
108.7
31.6
47.6
54.2
63.5
79.4
95.4
120.6
16.4
26.6
31.6
36.8
45.7
59.7
12.9
25.6
32.0
38.4
49.4
208-3-60 14.7 130.0 23.0
230-3-60 14.7 130.0 23.0
2.3
2.3
5.2
5.2
0.0
0.0
048
(4.0)
8.5
460-3-60 7.7 64.0 12.0
575-3-60 6.4 52.0 10.0
1.3
1.3
2.6
2.0
0.0
0.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
61.6
-
13.3
18.8
26.6
39.9
53.2
74.3
-
208-3-60 19.3 137.0 27.0
2.3
2.3
5.2
5.2
0.0
0.0
230-3-60 19.3 137.0 27.0
060
(5.0)
8.5
12.7
17.1
24.5
36.1
-
10.6
16.0
21.3
30.5
460-3-60 10.0 62.0 14.0
575-3-60 7.9 50.0 11.0
1.3
1.3
2.6
2.0
0.0
0.0
1. Minimum Circuit Ampacity.
2. Dual Element, Time Delay Type.
3. HACR type per NEC.
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TABLE 11: ELECTRICAL DATA - BQ036-060 BELT DRIVE HIGH STATIC W/O POWERED CONVENIENCE OUTLET
OD Fan Supply
Pwr
Conv
Outlet
Max
Compressors
(each)
2
Motors
(each)
Blower
Motor
Electric Heat Option
Fuse /
Breaker
Size
1
Size
(Tons)
MCA
3
Volt
(Amps)
RLA LRA MCC
FLA
FLA
FLA
Model
kW
Stages
Amps
(Amps)
30
40
45
50
70
80
30
45
50
60
70
90
15
25
30
35
45
15
25
30
35
35
50
50
60
70
90
35
50
50
60
80
90
20
25
30
35
45
15
25
35
40
45
60
60
70
80
90
125
45
60
70
70
90
100
125
25
35
40
40
50
70
20
30
35
40
60
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
E30
None
E05
E07
E10
E15
E20
E30
None
E07
E10
E15
E20
E30
None
E10
E15
E20
E30
-
-
-
21.8
35.7
41.2
49.5
63.1
76.9
21.8
37.7
44.3
53.6
69.6
85.5
11.0
21.2
26.2
31.4
40.3
8.8
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
22.2
-
5.3
7.5
10.6
15.9
21.2
29.6
-
6.8
10.1
13.6
19.5
28.8
-
10.6
15.9
21.2
30.4
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
2
-
1
1
1
2
2
2
-
1
1
2
2
2
-
1
1
2
2
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
208-3-60 11.9 85.0 16.7
1.7
5.2
0.0
230-3-60 11.9 85.0 16.7
1.7
5.2
0.0
036
(3.0)
8.5
460-3-60 5.9 42.0
575-3-60 4.8 34.0
8.2
6.7
1.0
1.0
2.6
2.0
0.0
0.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
21.5
27.9
34.3
25.9
39.8
45.3
53.6
67.2
81.0
25.9
41.8
48.4
57.7
73.7
89.6
13.5
23.7
28.7
34.0
42.8
11.0
23.8
30.2
36.5
34.6
48.5
54.1
62.4
75.9
89.8
111.7
34.6
50.6
57.2
66.5
82.4
98.4
123.6
17.9
28.1
33.1
38.3
47.2
61.2
14.5
27.2
33.6
40.0
51.0
208-3-60 14.7 130.0 23.0
230-3-60 14.7 130.0 23.0
2.3
2.3
5.2
5.2
0.0
0.0
048
(4.0)
8.5
460-3-60 7.7 64.0 12.0
575-3-60 6.4 52.0 10.0
1.3
1.3
2.6
2.0
0.0
0.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
61.6
-
13.3
18.8
26.6
39.9
53.2
74.3
-
208-3-60 19.3 137.0 27.0
2.3
2.3
8.2
8.2
0.0
0.0
230-3-60 19.3 137.0 27.0
060
(5.0)
8.5
12.7
17.1
24.5
36.1
-
10.6
16.0
21.3
30.5
460-3-60 10.0 62.0 14.0
575-3-60 7.9 50.0 11.0
1.3
1.3
4.1
3.6
0.0
0.0
1. Minimum Circuit Ampacity.
2. Dual Element, Time Delay Type.
3. HACR type per NEC.
18
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TABLE 12: ELECTRICAL DATA - BQ036-060 DIRECT DRIVE W/POWERED CONVENIENCE OUTLET
OD Fan Supply
Pwr
Conv
Outlet
Max
Compressors
(each)
2
Motors
(each)
Blower
Motor
Electric Heat Option
Fuse /
Breaker
Size
1
Size
(Tons)
MCA
3
Volt
(Amps)
RLA LRA MCC
FLA
FLA
FLA
Model
kW
Stages
Amps
(Amps)
40
50
60
60
80
90
40
50
60
70
80
100
20
30
35
40
45
15
30
35
40
45
60
60
70
80
100
45
60
60
70
90
100
25
30
35
40
50
20
30
35
45
60
70
70
80
90
100
125
60
70
80
80
100
110
150
30
40
40
45
60
70
25
35
40
45
60
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
E30
None
E05
E07
E10
E15
E20
E30
None
E07
E10
E15
E20
E30
None
E10
E15
E20
E30
-
-
-
31.0
44.9
50.4
58.7
72.3
86.1
31.0
46.9
53.5
62.8
78.8
94.7
15.6
25.8
30.8
36.0
44.9
12.6
25.3
31.7
38.1
35.7
49.6
55.1
63.4
77.0
90.8
35.7
51.6
58.2
67.5
83.5
99.4
18.1
28.3
33.3
38.6
47.4
14.8
27.5
33.9
40.3
43.0
56.9
62.5
70.8
84.3
98.2
120.1
43.0
59.0
65.6
74.9
90.8
106.8
132.0
22.1
32.3
37.3
42.5
51.4
65.4
17.5
30.2
36.6
43.0
54.1
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
22.2
-
5.3
7.5
10.6
15.9
21.2
29.6
-
6.8
10.1
13.6
19.5
28.8
-
10.6
15.9
21.2
30.4
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
2
-
1
1
1
2
2
2
-
1
1
2
2
2
-
1
1
2
2
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
208-3-60 11.9 85.0 16.7
1.7
4.4
10.0
230-3-60 11.9 85.0 16.7
1.7
4.4
10.0
036
(3.0)
8.5
460-3-60 5.9 42.0
575-3-60 4.8 34.0
8.2
6.7
1.0
1.0
2.2
2.2
5.0
4.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
208-3-60 14.7 130.0 23.0
230-3-60 14.7 130.0 23.0
2.3
2.3
5.0
5.0
10.0
10.0
048
(4.0)
8.5
460-3-60 7.7 64.0 12.0
575-3-60 6.4 52.0 10.0
1.3
1.3
2.2
2.2
5.0
4.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
61.6
-
13.3
18.8
26.6
39.9
53.2
74.3
-
208-3-60 19.3 137.0 27.0
2.3
2.3
6.6
6.6
10.0
10.0
230-3-60 19.3 137.0 27.0
060
(5.0)
8.5
12.7
17.1
24.5
36.1
-
10.6
16.0
21.3
30.5
460-3-60 10.0 62.0 14.0
575-3-60 7.9 50.0 11.0
1.3
1.3
3.3
3.3
5.0
4.0
1. Minimum Circuit Ampacity.
2. Dual Element, Time Delay Type.
3. HACR type per NEC.
Johnson Controls Unitary Products
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TABLE 13: ELECTRICAL DATA - BQ036-060 BELT DRIVE W/POWERED CONVENIENCE OUTLET
OD Fan Supply
Pwr
Conv
Outlet
Max
Compressors
(each)
2
Motors
(each)
Blower
Motor
Electric Heat Option
Fuse /
Breaker
Size
(Amps)
40
1
Size
(Tons)
MCA
3
Volt
(Amps)
RLA LRA MCC
FLA
FLA
FLA
Model
kW
Stages
Amps
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
E30
None
E05
E07
E10
E15
E20
E30
None
E07
E10
E15
E20
E30
None
E10
E15
E20
E30
-
-
-
31.8
45.7
51.2
59.5
73.1
86.9
31.8
47.7
54.3
63.6
79.6
95.5
16.0
26.2
31.2
36.4
45.3
12.8
25.5
31.9
38.3
35.9
49.8
55.3
63.6
77.2
91.0
35.9
51.8
58.4
67.7
83.7
99.6
18.5
28.7
33.7
39.0
47.8
15.0
27.8
34.2
40.5
41.6
55.5
61.1
69.4
82.9
96.8
118.7
41.6
57.6
64.2
73.5
89.4
105.4
130.6
21.4
31.6
36.6
41.8
50.7
64.7
16.9
29.6
36.0
42.4
53.4
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
22.2
-
5.3
7.5
10.6
15.9
21.2
29.6
-
6.8
10.1
13.6
19.5
28.8
-
10.6
15.9
21.2
30.4
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
2
-
1
1
1
2
2
2
-
1
1
2
2
2
-
1
1
2
2
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
50
60
60
80
90
40
50
60
70
80
100
20
30
35
40
50
15
30
35
40
50
60
60
70
80
100
50
60
60
70
90
100
25
30
35
40
50
20
30
35
45
60
70
70
80
90
100
125
60
70
70
80
90
110
150
30
35
40
45
60
70
20
30
40
45
60
208-3-60 11.9 85.0 16.7
1.7
5.2
10.0
230-3-60 11.9 85.0 16.7
1.7
5.2
10.0
036
(3.0)
8.5
460-3-60 5.9 42.0
575-3-60 4.8 34.0
8.2
6.7
1.0
1.0
2.6
2.0
5.0
4.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
208-3-60 14.7 130.0 23.0
230-3-60 14.7 130.0 23.0
2.3
2.3
5.2
5.2
10.0
10.0
048
(4.0)
8.5
460-3-60 7.7 64.0 12.0
575-3-60 6.4 52.0 10.0
1.3
1.3
2.6
2.0
5.0
4.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
61.6
-
13.3
18.8
26.6
39.9
53.2
74.3
-
208-3-60 19.3 137.0 27.0
2.3
2.3
5.2
5.2
10.0
10.0
230-3-60 19.3 137.0 27.0
060
(5.0)
8.5
12.7
17.1
24.5
36.1
-
10.6
16.0
21.3
30.5
460-3-60 10.0 62.0 14.0
575-3-60 7.9 50.0 11.0
1.3
1.3
2.6
2.0
5.0
4.0
1. Minimum Circuit Ampacity.
2. Dual Element, Time Delay Type.
3. HACR type per NEC.
20
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TABLE 14: ELECTRICAL DATA - BQ036-060 BELT DRIVE HIGH STATIC W/POWERED CONVENIENCE OUTLET
OD Fan Supply
Pwr
Conv
Outlet
Max
Compressors
(each)
2
Motors
(each)
Blower
Motor
Electric Heat Option
Fuse /
Breaker
Size
1
Size
(Tons)
MCA
3
Volt
(Amps)
RLA LRA MCC
FLA
FLA
FLA
Model
kW
Stages
Amps
(Amps)
40
50
60
60
80
90
40
50
60
70
80
100
20
30
35
40
50
15
30
35
40
50
60
60
70
80
100
50
60
60
70
90
100
25
30
35
40
50
20
30
35
45
60
70
70
80
90
100
125
60
70
80
80
100
110
150
30
40
45
45
60
70
25
35
40
45
60
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E05
E07
E10
E15
E20
None
E07
E10
E15
E20
None
E10
E15
E20
None
E05
E07
E10
E15
E20
E30
None
E05
E07
E10
E15
E20
E30
None
E07
E10
E15
E20
E30
None
E10
E15
E20
E30
-
-
-
31.8
45.7
51.2
59.5
73.1
86.9
31.8
47.7
54.3
63.6
79.6
95.5
16.0
26.2
31.2
36.4
45.3
12.8
25.5
31.9
38.3
35.9
49.8
55.3
63.6
77.2
91.0
35.9
51.8
58.4
67.7
83.7
99.6
18.5
28.7
33.7
39.0
47.8
15.0
27.8
34.2
40.5
44.6
58.5
64.1
72.4
85.9
99.8
121.7
44.6
60.6
67.2
76.5
92.4
108.4
133.6
22.9
33.1
38.1
43.3
52.2
66.2
18.5
31.2
37.6
44.0
55.0
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
-
5.3
7.5
10.6
15.9
21.2
-
6.8
10.1
13.6
19.5
-
10.6
15.9
21.2
-
4.0
5.6
8.0
11.9
15.9
22.2
-
5.3
7.5
10.6
15.9
21.2
29.6
-
6.8
10.1
13.6
19.5
28.8
-
10.6
15.9
21.2
30.4
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
-
1
1
1
2
2
-
1
1
2
2
-
1
1
2
-
1
1
1
2
2
2
-
1
1
1
2
2
2
-
1
1
2
2
2
-
1
1
2
2
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
208-3-60 11.9 85.0 16.7
1.7
5.2
10.0
230-3-60 11.9 85.0 16.7
1.7
5.2
10.0
036
(3.0)
8.5
460-3-60 5.9 42.0
575-3-60 4.8 34.0
8.2
6.7
1.0
1.0
2.6
2.0
5.0
4.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
-
13.3
18.8
26.6
39.9
53.2
-
208-3-60 14.7 130.0 23.0
230-3-60 14.7 130.0 23.0
2.3
2.3
5.2
5.2
10.0
10.0
048
(4.0)
8.5
460-3-60 7.7 64.0 12.0
575-3-60 6.4 52.0 10.0
1.3
1.3
2.6
2.0
5.0
4.0
12.7
17.1
24.5
-
10.6
16.0
21.3
-
11.1
15.5
22.2
33.0
44.1
61.6
-
13.3
18.8
26.6
39.9
53.2
74.3
-
208-3-60 19.3 137.0 27.0
2.3
2.3
8.2
8.2
10.0
10.0
230-3-60 19.3 137.0 27.0
060
(5.0)
8.5
12.7
17.1
24.5
36.1
-
10.6
16.0
21.3
30.5
460-3-60 10.0 62.0 14.0
575-3-60 7.9 50.0 11.0
1.3
1.3
4.1
3.6
5.0
4.0
1. Minimum Circuit Ampacity.
2. Dual Element, Time Delay Type.
3. HACR type per NEC.
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1
TABLE 15: ELECTRIC HEAT CORRECTION
FACTORS
TABLE 16: VOLTAGE LIMITATIONS
VOLTAGE
POWER SUPPLY
NOMINAL VOLTAGE
VOLTAGE
kW CAP. MULTIPLIER
MIN.
MAX.
208
230
460
575
0.75
0.92
0.92
0.92
208
240
480
600
208/230-3-60
187
253
460-3-60
575-3-60
414
518
506
630
1. Utilization Range “A” in accordance with ARI Standard
110.
FIGURE 7: UNIT DIMENSIONS (3 - 5 TON HEAT PUMP) FRONT VIEW
22
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FIGURE 10 - UNIT DIMENSIONS (REAR VIEW)
TABLE 18: MINIMUM CLEARANCES
CLEARANCE
LOCATION
24” (Cooling/Electric Heat)
32” (Gas Heat)
Filter Access
Front
Blower Motor Access
Dot Plugs
12” (Less Economizer)
36” (With Economizer or Fixed
Air/Motorized Damper)
Rear
24” (Less Economizer)
36” (With Economizer)
Field-Supplied Disconnect
Switch Location
Left Side (Filter Access)
Right Side (Cond. Coil)
Below Unit1
24”
0”
Mounting Bracket for
Disconnect Switch
(Field Supplied)
A,B
Wiring Entry
(See Detail “B”)
72” (For
Condenser Air Discharge)
Control Box Access
Above Unit2
Disconnect Switch Location
and Motor Access Panel for
Unit with “Belt-Drive” Option
1. Units may be installed on combustible floors made
from wood or class A, B, or C roof covering material.
2. Units must be installed outdoors. Overhanging struc-
tures or shrubs should not obstruct condenser air dis-
charge outlet.
FIGURE 11 - DISCONNECT/BLOWER ACCESS
LOCATION
TABLE 17: UTILITIES ENTRY
HOLE
OPENING SIZE (DIA.)
USED FOR
Side
Bottom
Side
1
2
A
7/8” KO
Control Wiring
Power Wiring
B
2” KO
Bottom
C
D
1-5/8” KO
1-1/2” KO
Gas Piping (Front)
Gas Piping (Bottom)
1. Opening in the bottom to the unit can be located by the
side in the insulation.
2. Do not remove the 2” knockout ring.
24
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TABLE 19: SUPPLY AIR BLOWER PERFORMANCE (BQ036 BELT DRIVE) - SIDE DUCT APPLICATION
Available External Static Pressure - IWG1
Air
Flow
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
(CFM)
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Field Supplied Drive
Standard Drive Option
HIgh Static Drive Option
800
678
699
727
759
795
0.37
0.42
0.45
0.51
0.60
761
782
810
842
878
0.44
0.49
0.52
0.58
0.67
840
862
889
922
958
0.52
0.56
0.60
0.65
917
939
966
998
0.60
991
0.69 1062 0.77 1130 0.87 1195 0.96 1259 1.06 1320 1.17
1000
1200
1400
1600
0.64 1012 0.73 1083 0.82 1151 0.91 1217 1.01 1280 1.11 1341 1.21
0.68 1040 0.76 1110 0.85 1179 0.95 1244 1.04 1308 1.14 1369 1.24
0.73 1072 0.82 1143 0.91 1211 1.00 1276 1.10 1340 1.20 1401 1.30
0.74 1035 0.82 1108 0.91 1179 1.00 1247 1.09 1313 1.19 1376 1.28 1438 1.39
4
FS
1. Blower performance includes 1” filters. See STATIC RESISTANCE table for additional applications.
2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP.
3. kW = BHP x 0.932.
4. Field Supplied Drive.
TABLE 20: SUPPLY AIR BLOWER PERFORMANCE (BQ036 BELT DRIVE) - BOTTOM DUCT APPLICATION
Available External Static Pressure - IWG1
Air
Flow
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
(CFM)
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Field Supplied Drive
Standard Drive Option
HIgh Static Drive Option
800
661
685
714
749
789
0.39
0.43
0.46
0.52
0.60
751
775
805
840
880
0.45
0.50
0.53
0.58
0.67
838
862
892
927
967
0.53
0.57
0.60
922
945
975
0.61 1002 0.69 1079 0.78 1153 0.87 1225 0.96 1294 1.06 1361 1.16
0.65 1025 0.73 1103 0.82 1177 0.91 1248 1.00 1317 1.10 1384 1.20
0.68 1055 0.76 1132 0.85 1207 0.94 1278 1.04 1347 1.13 1414 1.23
1000
1200
1400
1600
0.66 1010 0.74 1090 0.82 1167 0.91 1242 1.00 1313 1.09 1382 1.19 1449 1.29
0.74 1050 0.82 1130 0.91 1207 0.99 1282 1.08 1353 1.18 1422 1.27 1489 1.37
Field Supplied Drive
1. Blower performance includes 1” filters. See STATIC RESISTANCE table for additional applications.
2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP.
3. kW = BHP x 0.932.
TABLE 21: SUPPLY AIR BLOWER PERFORMANCE (BQ048 BELT DRIVE) - SIDE DUCT APPLICATION
Available External Static Pressure - IWG1
Air
Flow
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
(CFM)
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Field Supplied Drive
Standard Drive Option
HIgh Static Drive Option
1000
1200
1400
1600
1800
2000
656
680
706
737
774
815
0.41
0.47
0.56
0.67
0.80
0.95
757
781
807
839
875
916
0.46
0.52
0.61
0.72
0.85
851
874
901
932
968
0.52
0.58
0.67
937
960
987
0.58 1017 0.66 1092 0.73 1162 0.81 1228 0.90 1291 0.99 1351 1.08
0.65 1041 0.72 1115 0.80 1185 0.88 1251 0.96 1314 1.05 1375 1.14
0.73 1067 0.80 1142 0.88 1212 0.96 1278 1.05 1341 1.13 1401 1.22
0.77 1018 0.84 1098 0.91 1173 0.99 1243 1.07 1309 1.15 1372 1.24 1433 1.33
0.90 1055 0.97 1135 1.04 1209 1.12 1279 1.20 1345 1.28 1408 1.37 1469 1.46
1.00 1010 1.06 1096 1.12 1176 1.19 1251 1.27 1321 1.35 1387 1.44 1450 1.52 1510 1.61
1. Blower performance includes 1” filters. See STATIC RESISTANCE table for additional applications.
2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP.
3. kW = BHP x 0.932.
TABLE 22: SUPPLY AIR BLOWER PERFORMANCE (BQ048 BELT DRIVE) - BOTTOM DUCT APPLICATION
Available External Static Pressure - IWG1
Air
Flow
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
(CFM)
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Field Supplied Drive
Standard Drive Option
HIgh Static Drive Option
1000
1200
1400
1600
1800
2000
638
663
692
726
766
811
0.42
0.48
0.57
0.67
0.80
0.95
748
773
802
836
876
921
0.47
0.53
0.61
0.72
0.85
849
875
904
938
977
0.53
0.59
0.67
944
969
998
0.59 1031 0.66 1112 0.74 1188 0.82 1260 0.90 1329 0.98 1395 1.07
0.65 1056 0.72 1138 0.80 1214 0.88 1286 0.96 1354 1.04 1420 1.13
0.73 1085 0.80 1167 0.88 1243 0.96 1315 1.04 1383 1.13 1449 1.21
0.78 1032 0.84 1119 0.91 1201 0.98 1277 1.06 1349 1.15 1417 1.23 1483 1.32
0.90 1072 0.97 1159 1.04 1240 1.11 1316 1.19 1388 1.27 1457 1.36 1523 1.45
0.99 1023 1.05 1117 1.11 1204 1.18 1285 1.26 1362 1.34 1434 1.42 1502 1.51 1568 1.59
4
FS
1. Blower performance includes 1” filters. See STATIC RESISTANCE table for additional applications.
2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP.
3. kW = BHP x 0.932.
4. Field Supplied Drive.
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TABLE 23: SUPPLY AIR BLOWER PERFORMANCE (BQ060 BELT DRIVE) - SIDE DUCT APPLICATION
Available External Static Pressure - IWG1
0.8 1.0 1.2 1.4
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Air
Flow
(CFM)
0.2
0.4
0.6
1.6
1.8
2.0
Field Supplied Drive
Standard Drive Option
HIgh Static Drive Option
1200
1400
1600
1800
2000
2200
2400
2600
680
706
737
774
815
862
913
969
0.47
0.56
0.67
0.80
0.95
1.12
781
807
839
875
916
963
0.52
0.61
0.72
0.85
874
901
932
968
0.58
0.67
960
987
0.65 1041 0.72 1115 0.80 1185 0.88 1251 0.96 1314 1.05 1375 1.14
0.73 1067 0.80 1142 0.88 1212 0.96 1278 1.05 1341 1.13 1401 1.22
0.77 1018 0.84 1098 0.91 1173 0.99 1243 1.07 1309 1.15 1372 1.24 1433 1.33
0.90 1055 0.97 1135 1.04 1209 1.12 1279 1.20 1345 1.28 1408 1.37 1469 1.46
1.00 1010 1.06 1096 1.12 1176 1.19 1251 1.27 1321 1.35 1387 1.44 1450 1.52 1510 1.61
1.17 1056 1.23 1142 1.29 1223 1.36 1297 1.44 1367 1.52 1433 1.61 1496 1.70 1557 1.78
1.31 1014 1.36 1107 1.42 1194 1.49 1274 1.56 1349 1.63 1419 1.72 1485 1.80 1548 1.89 1608 1.98
1.52 1070 1.57 1163 1.63 1250 1.70 1330 1.77 1405 1.84 1475 1.93 1541 2.01 1603 2.10 1664 2.19
1. Blower performance includes 1” filters. See STATIC RESISTANCE table for additional applications.
2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP.
3. kW = BHP x 0.932.
TABLE 24: SUPPLY AIR BLOWER PERFORMANCE (BQ060 BELT DRIVE) - BOTTOM DUCT APPLICATION
Available External Static Pressure - IWG1
Air
Flow
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
(CFM)
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Field Supplied Drive
Standard Drive Option
HIgh Static Drive Option
1200
1400
1600
1800
2000
2200
2400
2600
663
692
726
766
811
861
917
978
0.48
0.57
0.67
0.80
0.95
1.11
773
802
836
876
921
971
0.53
0.61
0.72
0.85
875
904
938
977
0.59
0.67
969
998
0.65 1056 0.72 1138 0.80 1214 0.88 1286 0.96 1354 1.04 1420 1.13
0.73 1085 0.80 1167 0.88 1243 0.96 1315 1.04 1383 1.13 1449 1.21
0.78 1032 0.84 1119 0.91 1201 0.98 1277 1.06 1349 1.15 1417 1.23 1483 1.32
0.90 1072 0.97 1159 1.04 1240 1.11 1316 1.19 1388 1.27 1457 1.36 1523 1.45
0.99 1023 1.05 1117 1.11 1204 1.18 1285 1.26 1362 1.34 1434 1.42 1502 1.51 1568 1.59
1.16 1073 1.22 1167 1.28 1255 1.35 1336 1.43 1412 1.51 1484 1.59 1553 1.68 1619 1.76
1.30 1027 1.35 1129 1.41 1223 1.47 1311 1.54 1392 1.62 1468 1.69 1540 1.78 1609 1.86 1675 1.95
1.51 1088 1.56 1190 1.61 1284 1.68 1371 1.75 1453 1.82 1529 1.90 1601 1.98 1670 2.07 1736 2.15
Field Supplied Drive
1. Blower performance includes 1” filters. See STATIC RESISTANCE table for additional applications.
2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP.
3. kW = BHP x 0.932.
TABLE 25: SUPPLY AIR BLOWER PERFORMANCE (BQ036, 048 & 060 DIRECT DRIVE) -
SIDE DUCT APPLICATION
2
AVAILABLE EXTERNAL STATIC PRESSURE - IWG
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1
UNIT
TONNAGE
MOTOR
SPEED
HI
-
-
-
-
-
-
1720 825 1665 795 1600 765 1540 735 1490 700 1380 670
1660 850 1630 820 1590 780 1550 750 1500 720 1450 690 1400 665 1360 650 1270 610
1470 750 1440 725 1410 700 1370 675 1330 650 1290 625 1250 610 1220 600 1130 560
2000 1010 1950 975 1905 945 1840 910 1770 825 1660 825 1530 775
3
MED
LOW
HI
3
-
-
-
-
MED
LOW
HI
1810 910 1780 880 1740 850 1700 825 1665 800 1620 775 1560 740 1480 700 1390 660
1635 810 1610 780 1580 760 1555 740 1540 730 1510 715 1460 690 1400 660 1300 615
4
-
-
-
-
2500 1400 2420 1350 2340 1300 2260 1250 2160 1190 2060 1135 1925 1065
MED
LOW
2390 1350 2350 1300 2300 1255 2245 1210 2190 1165 2130 1120 2065 1075 1990 1030 1900 970
2270 1320 2230 1270 2190 1220 2145 1170 2090 1110 2030 1070 1960 1020 1890 970 1810 920
5
1. Factory set on medium speed tap.
2. Includes allowances for a wet evaporator coil, 1” filters. Refer to STATIC RESISTANCES Table for resistance values.
3. Side Flow application (230/460/575 Volts)
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TABLE 26: SUPPLY AIR BLOWER PERFORMANCE (BQ036, 048 & 060 DIRECT DRIVE) -
BOTTOM DUCT APPLICATION
2
AVAILABLE EXTERNAL STATIC PRESSURE - IWG
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1
UNIT
TONNAGE
MOTOR
SPEED
HI
-
-
-
-
-
-
1661 825 1608 795 1545 765 1487 735 1439 700 1333 670
1603 850 1574 820 1535 780 1497 750 1449 720 1401 690 1352 665 1314 650 1227 610
1420 750 1391 725 1362 700 1323 675 1285 650 1246 625 1208 610 1179 600 1092 560
1931 1010 1882 975 1839 945 1776 910 1709 825 1603 825 1478 775
3
MED
LOW
HI
3
-
-
-
-
MED
LOW
HI
1748 910 1719 880 1680 850 1641 825 1608 800 1564 775 1507 740 1429 700 1343 660
1579 810 1555 780 1526 760 1502 740 1487 730 1458 715 1410 690 1352 660 1256 615
4
-
-
-
-
2412 1400 2335 1350 2258 1300 2181 1250 2085 1190 1988 1135 1858 1065
MED
LOW
2306 1350 2268 1300 2220 1255 2167 1210 2114 1165 2056 1120 1993 1075 1921 1030 1834 970
2191 1320 2152 1270 2114 1220 2070 1170 2017 1110 1960 1070 1892 1020 1825 970 1748 920
5
1. Factory set on medium speed tap.
2. Includes allowances for a wet evaporator coil, 1” filters. Refer to STATIC RESISTANCES Table for resistance values.
3. Side Flow application (230/460/575 Volts)
TABLE 27: BELT DRIVE RPM SELECTION
Size
(Tons)
Max
BHP
Motor
Sheave
Blower
Sheave
5 Turns 4 Turns 3 Turns 2 Turns
1 Turn
Open
Fully
Closed
HP
Open
Open
Open
Open
1.5
1.5
1.5
1.5
1.5
2
1.73
1.73
1.73
1.73
1.73
2.3
1VL44
1VP56
1VL44
1VP56
1VL44
1VP56
AK64
AK66
AK56
AK61
AK56
AK56
805
865
920
980
1035
1335
1195
1455
1195
1590
1095
1390
1260
1515
1260
1660
036
(3)
1115
930
1170
995
1225
1060
1330
1060
1460
1280
1130
1390
1130
1525
048
(4)
1210
930
1270
995
060
(5)
1325
1395
TABLE 28: BELT DRIVE BLOWER MOTOR AND DRIVE DATA
Motor
Eff.
Motor Sheave
Blower Sheave
Size
(Tons)
Belt
Datum Dia.
(in.)
Datum Dia.
(in.)
HP
RPM
SF
Frame
Bore (in.) Model
Bore (in.) Model
1-1/2
1-1/2
1-1/2
1-1/2
1-1/2
2
1725
1725
1725
1725
1725
1725
0.8
0.8
0.8
0.8
0.8
0.8
1.15
1.15
1.15
1.15
1.15
1.15
56
56
56
56
56
56
2.8 - 3.8
4.0 - 5.0
2.8 - 3.8
4.0 - 5.0
2.8 - 3.8
4.0 - 5.0
7/8
7/8
7/8
7/8
7/8
7/8
1VL44
1VP56
1VL44
1VP56
1VL44
1VP56
6.0
6.2
5.2
5.7
5.2
5.2
1
1
1
1
1
1
AK64
AK66
AK56
AK61
AK56
AK56
A37
A39
A36
A38
A36
A38
036
(3.0)
048
(4.0)
060
(5.0)
TABLE 29: STATIC RESISTANCES
Resistance, IWG
CFM
Description
1000
1200
0.08
0.05
0.07
0.07
1400
0.09
1600
0.11
0.07
0.09
0.09
1800
0.13
0.08
0.11
0.10
2000
0.15
0.10
0.13
0.11
2200
0.17
0.12
0.15
0.12
2400
0.20
0.14
0.17
0.14
2600
2800
0.26
0.19
0.23
0.19
3000
0.30
0.22
0.26
0.22
Economizer1 2
0.07
0.04
0.06
0.06
0.23
0.16
0.20
0.16
7 - 15 kW
0.06
0.08
0.08
Electric
Heaters1
20 - 30 kW
Bottom Duct Connections1
1. Deduct these resistance values from the available external static pressure shown in SUPPLY AIR BLOWER PERFORMANCE Tables.
2. The pressure through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air
duct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.
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Drive Selection
1. Determine desired airflow.
2. Calculate or measure the amount of external static pressure.
3. Using the operating point determined from steps 1 & 2, locate this point on the appropriate supply air blower performance table. (Linear
interpolation may be necessary.)
4. Noting the RPM and BHP from step 3, locate the appropriate model and drive on the RPM selection table.
5. Review the BHP compared to the motor options available. Select the appropriate motor.
6. Review the RPM range for the motor options available. Select the appropriate drive if multiple drives are available for the chosen motor.
7. Determine turns open to obtain the desired operation point.
Example
1. 19000 CFM
2. 5.4 iwg
3. Using the supply air blower performance table below, the following data point was located: 1150 RPM & 36 BHP.
4. Using the RPM selection table below, Size X and Model Y is found.
5. 36 BHP exceeds the maximum continuous BHP rating of the 30 HP motor. The 40 HP motor is required.
6. 1150 RPM is within the range of the 30 & 40 HP drives, but step 5 requires the 40 HP motor.
7. Using the 40 HP motor and drive, 5.5 turns open will achieve 1150 RPM.
Example Supply Air Blower Performance
Available External Static Pressure - IWG
4.2 4.6 5.0 5.4
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Air
Flow
(CFM)
3.0
3.4
3.8
5.8
6.2
6.6
30 HP & Field Supplied Drive
Standard 30 HP & Drive
Alternate 40 HP & Drive
18000 800 10.00 850 14.00 900 18.00 950 22.00 1000 26.00 1050 30.00 1100 34.00 1150 38.00 1200 42.00 1250 46.00
19000 850 12.00 900 16.00 950 20.00 1000 24.00 1050 28.00 1100 32.00 1150 36.00 1200 40.00 1250 44.00 1300 48.00
20000 900 14.00 950 18.00 1000 22.00 1050 26.00 1100 30.00 1150 34.00 1200 38.00 1250 42.00 1300 46.00 1350 50.00
21000 950 16.00 1000 20.00 1050 24.00 1100 28.00 1150 32.00 1200 36.00 1250 40.00 1300 44.00 1350 48.00 1400 52.00
Table X: RPM Selection
Size
(Tons)
Max
BHP
Motor
Sheave Sheave
Blower 6 Turns 5 Turns 4 Turns 3 Turns 2 Turns
1 Turn
Open
Fully
Closed
Model
HP
Open
Open
Open
Open
Open
30
40
34.50
46.00
1VL51
1VL63
BK99
BK67
1000
1025
1045
1060
1110
1150
1475
N/A
N/A
X
Y
1125
1175
1250
1325
1400
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Altitude/Temperature Correction Factors
Air
Altitude (Ft.)
5000
Temp.
40
0
1000
1.022
1.002
0.982
0.964
0.947
0.929
0.912
2000
0.986
0.966
0.948
0.930
0.913
0.897
0.880
3000
0.950
0.931
0.913
0.896
0.880
0.864
0.848
4000
0.916
0.898
0.880
0.864
0.848
0.833
0.817
6000
0.849
0.832
0.816
0.801
0.787
0.772
0.758
7000
0.818
0.802
0.787
0.772
0.758
0.744
0.730
8000
0.788
0.772
0.757
0.743
0.730
0.716
0.703
9000
0.758
0.743
0.729
0.715
0.702
0.689
0.676
10000
0.729
0.715
0.701
0.688
0.676
0.663
0.651
1.060
1.039
1.019
1.000
0.982
0.964
0.946
0.882
0.864
0.848
0.832
0.817
0.802
0.787
50
60
70
80
90
100
1.100
1.050
1.000
0.950
0.900
0.850
0.800
0.750
0.700
0.650
0.600
Sea Level
1000 ft
2000 ft
3000 ft
4000 ft
5000 ft
6000 ft
7000 ft
8000 ft
9000 ft
10000 ft
40
50
60
70
80
90
100
Air Temperature (ºF)
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PHASING
Check for proper compressor rotation. If the blower or
compressors rotate in the wrong direction at start-up,
the electrical connection to the unit is misphased.
Change the incoming line connection phasing to obtain
proper rotation. (Scroll compressors operate in only
one direction. If the scroll is drawing low amperage,
has similar suction and discharge pressures, or pro-
ducing a high noise level, the scroll is misphased).
Scroll compressors require proper rotation to
operate correctly. Do not change the internal
wiring to make the blower, condenser fans, or
compressor rotate correctly. Change the
incoming power to the main terminal block to
obtain proper rotation.
SUPPLY AIR BLOWERS
FIGURE 12 - BELT ADJUSTMENT
These blowers have either 3-speed direct drive motors,
or single speed motors equipped with a belt drive. Belt
drive units have a variable pitch motor pulley that
allows the blower speed to be adjusted.
Start the supply air blower motor. Adjust the resis-
tances in both the supply and the return air duct sys-
tems to balance the air distribution throughout the
conditioned space. The job specifications may require
that this balancing be done by someone other than the
equipment installer.
CHECKING SUPPLY AIR CFM
The RPM of the supply air blower will depend on the
required CFM, the unit accessories or options and the
static resistances of both the supply and the return air
duct systems. With this information, the motor speed
tap (direct drive) or the motor pulley number of turns
open (belt drive) can be determined from the Blower
Performance Data Tables.
To check the supply air CFM after the initial balancing
has been completed:
1. Remove the two 5/16” dot plugs from the blower
motor and the filter access panels shown in Figure
11.
2. Insert at least 8" of 1/4 inch tubing into each of
these holes for sufficient penetration into the air
flow on both sides of the indoor coil.
Note the following:
1. The supply air CFM must be within the limitations
NOTE: The tubes must be inserted and held in a posi-
tion perpendicular to the air flow so that veloc-
ity pressure will not affect the static pressure
readings.
2. Pulleys can be adjusted in half turn increments.
3. The tension on the belt should be adjusted as
3. Using an inclined manometer, determine the pres-
sure drop across a dry evaporator coil. Since the
moisture on an evaporator coil may vary greatly,
measuring the pressure drop across a wet coil
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under field conditions would be inaccurate. To
assure a dry coil, the compressors should be deac-
tivated while the test is being run.
For heating, the thermostat makes a circuit between
“R” and “W1”. The UCB energizes the compressor and
condenser fan allowing the unit to run in heating mode.
A time / temperature control operates the defrost cycle.
4. Knowing the pressure drop across a dry coil, the
actual CFM through the unit can be determined
from the curve in Pressure Drop vs. Supply Air
If at any time a call for both heating and cooling are
present, the heating operation will be performed. If
operating, the cooling system is halted as with a com-
pletion of a call for cooling. Heating always takes prior-
ity.
COOLING SEQUENCE OF OPERATION
CONTINUOUS BLOWER
Failure to properly adjust the total system air
quantity and static pressure can result in
extensive system damage.
By setting the room thermostat fan switch to “ON,” the
supply air blower will operate continuously.
After readings have been obtained, remove the tubes
and reinstall the two 5/16” dot plugs that were removed
in Step 1.
INTERMITTENT BLOWER
With the room thermostat fan switch set to “AUTO” and
the system switch set to either the “AUTO” or “HEAT”
settings, the blower is energized whenever a cooling or
heating operation is requested. The blower is ener-
gized after any specified delay associated with the
operation.
NOTE: De-energize the compressors before taking
any test measurements to assure a dry indoor
coil.
0.5
When energized, the indoor blower has a minimum run
time of 30 seconds. Additionally, the indoor blower has
a delay of 10 seconds between operations.
060
048
036
0.4
0.3
0.2
0.1
0
NO OUTDOOR AIR OPTIONS
When the thermostat calls for cooling, the low-voltage
control circuit from “R” to “Y1” and “G” is completed.
The compressor and condenser fan motor are ener-
gized. After completing the specified fan on delay for
cooling, the UCB will energize the blower motor.
Once the thermostat has been satisfied, it will de-ener-
gize Y1. If the compressor has satisfied its minimum
run time, the compressor and condenser fan de-ener-
gize. Otherwise, the unit operates the cooling system
until the minimum run time for the compressor has
been completed. After the compressor de-energizes,
the blower is stopped following the elapse of the fan off
delay for cooling.
1000
1500
2000
2500
3000
FIGURE 13 - PRESSURE DROP ACROSS COIL
OPERATION
SEQUENCE OF OPERATIONS OVERVIEW
For these units, the thermostat makes a circuit
between “R” and “Y1” for the cooling cycle.
To be available, a compressor must not be locked-out
due to a high or low-pressure switch or freezestat trip
and the anti-short cycle delay (ASCD) must have
elapsed.
The call is passed to the unit control board (UCB),
which then determines whether the requested opera-
tion is available and, if so, which components to ener-
gize.
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ECONOMIZER WITH SINGLE ENTHALPY SENSOR -
open to a position set by the thumbwheel on the
damper motor. When the “R” to “G” circuit is opened,
the damper spring returns fully closed.
When the room thermostat calls for cooling, the low
voltage control circuit from “R” to “G” and “Y1” is com-
pleted. The UCB energizes the blower motor (if the fan
switch on the room thermostat is set in the “AUTO”
position) and drives the economizer dampers from fully
closed to their minimum position. If the enthalpy of the
outdoor air is below the setpoint of the enthalpy con-
troller (previously determined), “Y1” energizes the
economizer. The dampers will modulate to maintain a
constant supply air temperature as monitored by the
discharge air sensor. If the outdoor air enthalpy is
above the setpoint, “Y1” energizes the compressor and
condenser fan motor only.
COOLING OPERATION ERRORS
Each cooling system is monitored for operation outside
of the intended parameters. Errors are handled as
described below. All system errors override minimum
run times for compressors.
HIGH-PRESSURE LIMIT SWITCH
During cooling operation, if a high-pressure limit switch
opens, the UCB will de-energize the compressor, initi-
ate the ASCD (Anti-short cycle delay), and, stop the
condenser fan. If the call for cooling is still present at
the conclusion of the ASCD, the UCB will re-energize
the compressor.
Once the thermostat has been satisfied, it will de-ener-
gize “Y1”. If the compressor has satisfied its minimum
run time, the compressor and condenser fan are de-
energized. Otherwise, the unit operates the cooling
system until the minimum run times for the compressor
has been completed. After the compressor de-ener-
gizes, the blower is stopped following the elapse of the
fan off delay for cooling, and the economizer damper
goes to the closed position. If the unit is in continues
fan operation the economizer damper goes to the min.
position.
Should a high-pressure switch open three times within
two hours of operation, the UCB will lock-out the com-
LOW-PRESSURE LIMIT SWITCH
The low-pressure limit switch is not monitored during
the initial 30 seconds of a cooling system's operation.
For the following 30 seconds, the UCB will monitor the
low-pressure switch to ensure it closes. If the low-pres-
sure switch fails to close after the 30-second monitor-
ing phase, the UCB will de-energize the compressor,
initiate the ASCD, and stop the condenser fan.
ECONOMIZER WITH DUAL ENTHALPY SENSORS -
The operation with the dual enthalpy sensors is identi-
cal to the single sensor except that a second enthalpy
sensor is mounted in the return air. This return air sen-
sor allows the economizer to choose between outdoor
air and return air, whichever has the lowest enthalpy
value, to provide maximum operating efficiency.
Once the low-pressure switch has been proven (closed
during the 30-second monitor period described above),
the UCB will monitor the low-pressure limit switch for
any openings. If the low-pressure switch opens for
greater than 5 seconds, the UCB will de-energize the
compressor, initiate the ASCD, and stop the condenser
fan.
ECONOMIZER (SINGLE OR DUAL) WITH POWER
EXHAUST -
This system operates as specified above with one
addition. The power exhaust motor is energized 45
seconds after the actuator position exceeds the
exhaust fan setpoint on the economizer control. When
the power exhaust is operating, the second stage of
mechanical cooling will not operate. As always, the “R”
to “G” connection provides minimum position but does
not provide power exhaust operation.
If the call for cooling is still present at the conclusion of
the ASCD, the UCB will re-energize the compressor.
Should a low-pressure switch open three times within
one hour of operation, the UCB will lock-out the com-
MOTORIZED OUTDOOR AIR DAMPERS -
FREEZESTAT
This system operation is the same as the units with no
outdoor air options with one exception. When the “R” to
“G” circuit is complete, the motorized damper drives
During cooling operation, if a freezestat opens, the
UCB will de-energize the compressor, initiate the
ASCD, and stop the condenser fan. If the call for cool-
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ing is still present at the conclusion of the ASCD, the
UCB will re-energize the compressor.
trolled. On any fault, the system will be affected by any
safety/preventive action.
Should a freezestat open three times within two hours
of operation, the UCB will lock-out the compressor and
The unit control board monitors the temperature limit
switch of the electric heat.
COMPRESSOR PROTECTION
LOW AMBIENT COOLING
The compressor also has inherent (internal) protection.
If there is an abnormal temperature rise in a compres-
sor, the protector will open to shut down the compres-
sor. The UCB incorporates features to minimize
compressor wear and damage. An anti-short cycle
delay (ASCD) is utilized to prevent operation of a com-
pressor too soon after its previous run. Additionally, a
minimum run time is imposed any time a compressor is
energized.
To determine when to operate in low ambient mode,
the UCB has a pair of terminals connected to a temper-
ature-activated switch set at 45ºF. When the low ambi-
ent switch is closed and the thermostat is calling for
cooling, the UCB will operate in the low ambient mode.
Low ambient mode operates the compressors in this
manner: 10 minutes on, 5 minutes off. The indoor
blower is operated throughout the cycle. The 5-minute
off period is necessary to defrost the indoor coil.
The ASCD is initiated on unit start-up and on any com-
pressor reset or lock-out.
Low ambient mode always begins with compressor
operation. Compressor minimum run time may extend
the minutes of compressor operation. The defrost cycle
will begin immediately following the elapse of the mini-
mum run time.
FLASH CODES
The UCB will initiate a flash code associated with
errors within the system. Refer to UNIT CONTROL
BOARD FLASH CODES Table 32.
When operating in low ambient mode, the UCB will not
lockout the compressor due to a freezestat trip. How-
ever, a freezestat trip will de-energize the compressor.
If the call for cooling is still present at the end of the
ASCD and the freezestat has closed, the unit will
resume operation.
RESET
Remove the call for cooling, by raising thermostat set-
ting higher than the conditioned space temperature.
This resets any pressure or freezestat flash codes.
SAFETY CONTROLS
HEATING SEQUENCE OF OPERATIONS
WITH OR WITHOUT ELECTRIC HEAT
The unit control board monitors the following inputs for
the cooling system:
When the thermostat calls for the first stage of heating,
the low voltage control circuit is completed between “R”
and “W1”. The 24vac signal is passed through the
UCB to the “Y” contact on the Defrost Control (DC)
assuring the reversing valve cannot be energized,
except during defrost. If the ASCD timer is satisfied the
UCB will energize compressor contactor M1.
1. A suction line freezestat to protect against low
evaporator temperatures due to a low airflow or a
low return air temperature, (opens at 26 ± 5 °F and
resets at 38 ± 5°F).
2. A high-pressure switch to protect against exces-
sive discharge pressures due to a blocked con-
denser coil or a condenser motor failure, (opens at
380 ± 10 psig and resets at 300 ± 10 psig).
If the compressor alone cannot satisfy the heating
requirements, a second stage call from the thermostat
completes the circuit between “R” and “W2”. This
24vac signal is passed through the UCB to the electric
heat section (if available). The total available kW of
electric heat will be energized on a call for “W2”.
3. A low-pressure switch to protect against loss of
refrigerant charge, (opens at 7 ± 3 psig and resets
at 22 ± 5 psig).
The above pressure switches are hard-soldered to the
unit. The refrigeration system is monitored and con-
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DEFROST MODE
SAFETY CONTROLS
As mentioned earlier, the defrost control (DC) utilizes a
time/temperature defrost scheme. The following two
conditions must be met before the DC will enter a
defrost mode:
The control circuit includes the following safety con-
trols:
1. Temperature Limit Switch (TLS) - This control is
located inside the heater compartment and is set to
open at the temperature indicated in the Electric
matically. The limit switch operates when a high
temperature condition, caused by inadequate sup-
ply air flow occurs, thus shutting down the heater
and energizing the blower.
The defrost thermostat (SD) must be closed. This nor-
mally open thermostat is mounted on the liquid line and
is set to close at 28 ± 4°F.
Once the defrost thermostat closes, the defrost control
starts a run timer that must be satisfied before defrost
can begin. This is accumulated compressor run time.
The selection pin is factory set at 60 minutes, but is
field adjustable to 30, 60 or 90 minutes.
TABLE 30: ELECTRIC HEAT LIMIT CONTROL
SETTING
When the DC enters the defrost mode, it’s on-board
defrost relay is powered. This energizes the reversing
valve, de-energizes the condenser fan motor and ener-
gizes the unit’s optional electric heater. The DC
remains in defrost mode until either of the following two
conditions is met:
ºF
VOLTAGE
kW
TEMPERATURE LIMIT SWITCH
Open Temp
5
7
1
1,3
140
140
140
140
140
150
150
140
140
150
140
150
160
150
140
140
140
160
150
140
140
160
150
10
15
1,2,3
2,4,6
1,2,3,4,5
6
230-1-60
1. The liquid line thermostat is open. It is set to open
at 55 ± 4°F.
20
30
5
1,2,3,4,5,6
1,2,3
1,2,3
1,2,3
2,4,6
1,2,3,4,5,6
1,3,5
2,4,6
2,4,6
2,4,6
2,4,6
3
2. The maximum defrost run time of 10 minutes is
met.
7
10
15
20
230-3-60
FORCED DEFROST
The processor on the defrost board is only energized
when the defrost sensor (DS) is closed.
30
7
To create a forced defrost:
10
15
20
30
10
15
20
30
1. The DS must either be closed or a jumper must be
placed across the DFS terminals on the board.
460-3-60
575-3-60
3
2. Place a jumper across the test pin terminals on the
board.
2,4,6
2,4,6
5
Depending on the selected defrost minimum run
time of 30, 60 or 90 minutes, the board will go into
defrost in 7.5, 15 or 22.5 seconds.
5
The DC will remain in defrost until the jumpers
across the DS and the test pin terminals are
removed.
HEAT ANTICIPATOR SETPOINTS
It is important that the anticipator setpoint be correct.
Too high of a setting will result in longer heat cycles
and a greater temperature swing in the conditioned
space. Reducing the value below the correct setpoint
will give shorter “ON” cycles and may result in the low-
ering of the temperature within the conditioned space.
Once the jumpers are removed, the board then ter-
minates defrost when the DS opens or a maximum
of 10 minutes after the test pin jumper is removed,
whichever comes first.
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tor setting.
3. Compressor will energize after the built-in time
delay (five minutes).
POST START CHECK LIST
TABLE 31: ELECTRIC HEAT ANTICIPATOR
SETPOINTS
1. Verify proper system pressures.
SETTING, AMPS
HEATER
KW
VOLTAGE
2. Measure the temperature drop across the evapora-
tor coil.
TH1
TH2
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.37
0.37
0.35
0.35
0.37
0.37
5
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
3. Measure the system Amperage draw across all
legs of 3 phase power wires.
7
10
15
20
30
7
230-3-60
4. Measure the condenser fan amp draw.
SHUT DOWN
1. Set the thermostat to highest temperature setting.
2. Turn off the electrical power to the unit.
10
15
20
30
10
15
20
30
460-3-60
575-3-60
TROUBLESHOOTING
COOLING TROUBLESHOOTING GUIDE
START-UP (COOLING)
Troubleshooting of components may require
opening the electrical control box with the power
connected to the unit. Use extreme care when
working with live circuits! Check the unit
nameplate for the correct line voltage and set
the voltmeter to the correct range before making
any connections with line terminals.
PRESTART CHECK LIST
After installation has been completed:
1. Check the electrical supply voltage being supplied.
Be sure that it is the same as listed on the unit
nameplate.
2. Set the room thermostat to the off position.
3. Turn unit electrical power on.
When not necessary, shut off all electric power to
the unit prior to any of the following maintenance
procedures so as to prevent personal injury.
4. Set the room thermostat fan switch to on.
5. Check indoor blower rotation.
•
If blower rotation is in the wrong direction.
Refer to Phasing Section in general informa-
tion section.
Label all wires prior to disconnection when ser-
vicing controls. Wiring errors can cause improper
and dangerous operation, which could cause
injury to person and/or damage unit components.
Verify proper operation after servicing.
•
Check blower drive belt tension.
6. Check the unit supply air (CFM). See “CHECKING
SUPPLY AIR CFM” on page 30.
On calls for cooling, if the compressors are operating
but the supply air blower motor does not energize after
a short delay (the room thermostat fan switch is in the
“AUTO” position).
7. Measure evaporator fan motor's amp draw.
8. Set the room thermostat fan switch to off.
9. Turn unit electrical power off.
1. Turn the thermostat fan switch to the ON position.
If the supply air blower motor does not energize, go
to Step 3.
OPERATING INSTRUCTIONS
1. Turn unit electrical power on.
2. Set the room thermostat setting to lower than the
room temperature.
2. If the blower motor runs with the fan switch in the
ON position but will not run after the compressor
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has energized when the fan switch is in the AUTO
position, check the room thermostat for contact
between R and G in the AUTO position during calls
for cooling.
providing free cooling and the compressors will not
immediately operate. If both stages of cooling are
requested simultaneously and the economizer pro-
vides free cooling, following a short delay the com-
pressor will be energized unless it is locked out,
unless this option has been disabled through com-
puter communications.
3. If the supply air blower motor does not energize
when the fan switch is set to ON, check that line
voltage is being supplied to the contacts of the M2,
contactor, and that the contactor is pulled in. Check
for loose wiring between the contactor and the sup-
ply air blower motor.
2. If no economizer is installed or the economizer is not
opening to provide free cooling and the compressor
does not energize on a call for cooling, check for line
voltage at the compressor contactor, M1, and that
the contactor is pulled in. Check for loose wiring
between the contactor and the compressor.
4. If M2 is pulled in and voltage is supplied to M2,
lightly touch the supply air blower motor housing. If
it is hot, the motor may be off on internal protec-
tion. Cancel any thermostat calls and set the fan
switch to AUTO. Wait for the internal overload to
reset. Test again when cool.
3. If M1 is pulled in and voltage is supplied at M1,
lightly touch the compressor housing. If it is hot, the
compressor may be off on inherent protection.
Cancel any calls for cooling and wait for the inter-
nal overload to reset. Test again when cool.
5. If M2 is not pulled in, check for 24 volts at the M2
coil. If 24 volts are present at M2 but M2 is not
pulled in, replace the contactor.
4. If M1 is not pulled in, check for 24 volts at the M1
coil. If 24 volts are present and M1 is not pulled in,
replace the contactor.
6. Failing the above, if there is line voltage supplied at
M2, M2 is pulled in, and the supply air blower
motor still does not operate, replace the motor.
5. Failing the above, if voltage is supplied at M1, M1
is pulled in, and the compressor still does not oper-
ate, replace the compressor.
7. If 24 volts is not present at M2, check that 24 volts
is present at the UCB supply air blower motor ter-
minal, “FAN”. If 24 volts is present at the FAN,
check for loose wiring between the UCB and M2.
6. If 24 volts is not present at M1, check for 24 volts at
the UCB terminal, C1. If 24 volts is present, check
for loose wiring between C1 and the compressor
contactor.
8. If 24 volts is not present at the “FAN” terminal,
check for 24 volts from the room thermostat. If 24
volts are not present from the room thermostat,
check for the following:
7. If 24 volts is not present at the C1 terminal, check
for 24 volts from the room thermostat at the UCB
Y1 terminal. If 24 volts is not present from the room
thermostat, check for the following:
a. Proper operation of the room thermostat (contact
between R and G with the fan switch in the ON posi-
tion and in the AUTO position during operation calls).
a. 24 volts at the thermostat Y1 terminal
b. Proper wiring between the room thermostat and the
UCB, i.e. Y1 to Y1, Y2 to Y2
b. Proper wiring between the room thermostat and the
UCB.
c. Loose wiring from the room thermostat to the UCB.
c. Loose wiring from the room thermostat to the UCB.
8. If 24 volts is present at the UCB Y1 terminal, the
compressor may be out due to an open high-pres-
sure switch, low-pressure switch, or freezestat.
Check for 24 volts at the HPS1, LPS1, and FS1
terminals of the UCB. If a switch has opened, there
should be a voltage potential between the UCB ter-
minals, e.g. if LPS1 has opened, there will be a 24-
volt potential between the LPS1 terminals.
9. If 24 volts is present at the room thermostat but not
at the UCB, check for proper wiring between the
thermostat and the UCB, i.e. that the thermostat G
terminal is connected to the G terminal of the UCB,
and for loose wiring.
10. If the thermostat and UCB are properly wired,
replace the UCB.
9. If 24 volts is present at the UCB Y1 terminal and none
of the protection switches have opened, the UCB
may have locked out the compressor for repeat trips.
The UCB should be flashing an alarm code. If not,
press and release the ALARMS button on the UCB.
On a call for cooling, the supply air blower motor is
operating but the compressor is not (the room thermo-
stat fan switch is in the “AUTO” position).
1. If installed, check the position of the economizer
blades. If the blades are open, the economizer is
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The UCB will flash the last five alarms on the LED. If
the compressor is locked out, cancel any call for cool-
ing. This will reset any compressor lock outs.
For units with factory installed economizers, the
UCB is programmed to lock out compressor opera-
tion when the LAS set point is reached.
For units without factory installed or with field
installed economizers, the UCB allows compressor
operation all the time. This programming can be
checked or changed by the local distributor.
NOTE: While the above step will reset any lockouts,
the compressor may be held off for the ASCD.
See the next step.
10. If 24 volts is present at the UCB Y1 terminal and
none of the switches are open and the compressor
is not locked out, the UCB may have the compres-
sor in an ASCD. Check the LED for an indication of
an ASCD cycle. The ASCD should time out within
5 minutes. Press and release the TEST button to
reset all ASCDs.
15. If none of the above correct the error, replace the
UCB.
UNIT FLASH CODES
Various flash codes are utilized by the unit control
board (UCB) to aid in troubleshooting. Flash codes are
distinguished by the short on and off cycle used
(approximately 200ms on and 200ms off). To show
normal operation, the control board flashes a 1 second
on, 1 second off “heartbeat” during normal operation.
This is to verify that the UCB is functioning correctly.
Do not confuse this with an error flash code. To prevent
confusion, a 1-flash, flash code is not used.
11. If 24 volts is present at the UCB Y1 terminal and the
compressor is not out due to a protective switch trip,
repeat trip lock out, or ASCD, the economizer termi-
nals of the UCB may be improperly wired. Check for
24 volts at the Y1 “OUT” terminal of the UCB. If 24
volts is present, trace the wiring from Y1 “OUT” for
incorrect wiring. If 24 volts is not present at the Y1
“OUT” terminal, the UCB must be replaced.
Current alarms are flashed on the UCB LED. Pressing
and releasing the ALARMS button on the UCB can
check the alarm history. The UCB will cycle through the
last five (5) alarms, most recent to oldest, separating
each alarm flash code by approximately 2 seconds.
12. For units without economizers: If 24 volts is present
at the Y1 OUT terminal, check for 24 volts at the
Y1 “ECON” terminal. If 24 volts is not present,
check for loose wiring from the Y1 “OUT” terminal
to the Mate-N-Lock plug, the jumper in the Mate-N-
Lock plug, and in the wiring from the Mate-N-Lock
plug to the Y1 “ECON” terminal.
In some cases, it may be necessary to “zero” the
ASCD for the compressors in order to perform trouble-
shooting. To reset all ASCDs for one cycle, press and
release the UCB TEST button once.
13. For units with economizers: If 24 volts is present at
the Y1 “OUT” terminal, check for 24 volts at the Y1
“ECON” terminal. If 24 volts is not present, check
for loose wiring from the Y1 “OUT” terminal to the
Mate-N-Lock plug, a poor connection between the
UCB and economizer Mate-N-Lock plugs, loose
wiring from the Mate-N-Lock plug to the econo-
mizer, back to the Mate-N-Lock plug, and from the
Mate-N-Lock plug to the Y1 “ECON” terminal. If
nothing is found, the economizer actuator may
have faulted and is failing to return the 24-volt “call”
to the Y1 “ECON” terminal even though the econo-
mizer is not providing free cooling. To test, discon-
nect the Mate-N-Locks and jumper between the
WHITE and YELLOW wires of the UCB’s Mate-N-
Lock plug. If the compressor energizes, there is a
fault in the economizer wiring or actuator.
TABLE 32: UNIT CONTROL BOARD FLASH CODES
Flash Code
On Steady
Heart Beat
1 Flash
Description
Control Failure - Replace Control
Normal Operation
Not Applicable
1
2 Flashes
3 Flashes
5 Flashes
7 Flashes
Control waiting ASCD
HPS1 - Compressor Lock out
LPS1 - Compressor Lock out
FS1 - Compressor Lock out
Ignition Control Locked Out/
9 Flashes
Ignition Control Failure / Limit Switch Trip /
No Jumper Plug in Heat Section
Compressors Locked Out On Low
10 Flashes
11 Flashes
Outdoor Air Temperature
Compressors Locked Out Because the
Economizer Is Using Free Cooling
14. The UCB can be programmed to lock out compres-
sor operation during free cooling and in low ambi-
ent conditions. These options are not enabled by
default. Local distributors can test the UCB for this
programming.
13 Flashes
14 Flashes
OFF
Compressor Held Off Due To Low Voltage
EEPROM Storage Failure (Control Failure)
No Power or Control Failure
1. These flash codes do not represent alarms.
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MAINTENANCE
NORMAL MAINTENANCE
Perform all maintenance operations on the
blower motor with electric power disconnected
from the unit. Do not attempt to lubricate bear-
ings with the unit in operation.
Prior to any of the following maintenance pro-
cedures, shut off all electric power to the unit to
prevent personal injury.
On an annual basis, check the motor for accumulations
of dust, etc. that may block the cooling slots in the
motor shell. Check for loose, damaged or misaligned
drive components. Check that all mounting bolts are
tight. Replace defective parts as required.
FILTERS
Inspect once a month. Replace disposable or clean
permanent type as necessary. DO NOT replace per-
manent type with disposable. The dimensional size of
the replacement filter must be the same as the
replaced filter.
If desired, every three years remove both pipe plugs at
each end shell and clean out any hardened grease or
foreign matter. Replace one plug on each end with a
clean grease fitting. Using a low pressure grease gun,
pump grease (Chevron SRI-2 or equivalent) into the
bearing cavity until new grease shows at the open port.
Do not over lubricate. Run the motor for ten minutes
until excess grease is purged from the cavity. Replace
the plugs.
MOTORS
Outdoor fan motors are permanently lubricated and
require no maintenance.
Indoor Blower Motor and Drive - The indoor blower
motor features ball bearings that do not require
periodic lubrication. Periodic lubrication of the motor
and bearings can extend the life of components but is
optional.
15 ton units are supplied with blower shaft bearings
that do not require maintenance but may be lubricated
if desired. Every three years, using a low pressure
grease gun, pump grease into the bearing grease fit-
ting until grease just begins to show at the seals. Do
not over lubricate. Use any lithium base grease recom-
mended for ball bearing service.
OUTDOOR COIL
Damage can occur if the bearings are overlu-
bricated. Use grease sparingly.
Dirt should not be allowed to accumulate on the out-
door coil surface or other parts in the air circuit. Clean-
ing should be as often as necessary to keep coil clean.
Use a brush, vacuum cleaner attachment, or other suit-
able means. If water is used to clean coil, be sure elec-
tric power to the unit is shut off prior to cleaning.
NOTE: Exercise care when cleaning the coil so that
the coil fins are not damaged.
38
Johnson Controls Unitary Products
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364985-XIM-B-0508
Johnson Controls Unitary Products
39
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Subject to change without notice. Printed in U.S.A.
364985-XIM-B-0508
Copyright © 2008 by Johnson Controls, Inc. All rights reserved.
Supersedes: 364985-YIM-A-0308
Johnson Controls Unitary Products
5005 York Drive
Norman, OK 73069
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