INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGED HEAT PUMP
&
LOW VOLTAGE
CONTROL CIRCUIT WIRING
Models:
J18HA-A
J24HA-A
J30HA-A
J36HA-A
J42HA-A
J48HA-A
J60HA-A
J24HA-B
J30HA-B
J36HA-B
J42HA-B
J48HA-B
J60HA-B
J24HA-C
J30HA-C
J36HA-C
J42HA-C
J48HA-C
J60HA-C
Manual:
2100-660
Supersedes: NEW
Date:4-27-16
Page
1 of 32
CONTENTS
Getting Other Information and Publications..... 3
Wall Mount General Information.......................... 4
Heat Pump Wall Mount Model Nomenclature........... 4
Shipping Damage.................................................. 4
General................................................................ 4
Duct Work............................................................ 4
Filter.................................................................... 5
Fresh Air Intake.................................................... 5
Condensate Drain ................................................. 5
Installation................................................................ 6
Wall Mounting Information..................................... 6
Mounting the Unit................................................. 6
Clearances Required.............................................. 6
Minimum Clearances............................................. 6
Wiring – Main Power............................................ 15
Wiring – Low Voltage Wiring.................................. 15
Figures
Figure 1 Fresh Air Damper................................... 5
Figure 2 Unit Dimensions.................................... 7
Figure 3A Mounting Instructions – J18H, J24H....... 8
Figure 3BMounting Instructions – J30H, J36H....... 9
Figure 3C Mounting Instructions – J42H, J48H..... 10
Figure 3D Mounting Instructions – J60H............... 11
Figure 4 Electric Heat Clearance........................ 12
Figure 5 Wall Mounting Instructions................... 13
Figure 6 Wall Mounting Instructions................... 13
Figure 7 Common Wall Mounting Installations..... 14
Figure 8 Programmable Thermostat Connections.. 17
Figure 9 Non-Programmable Thermostat
Connections........................................ 18
Figure 10 Defrost Control Board........................... 18
Figure 11 Fan Blade Setting................................ 21
Manual2100-660
Page
2 of 32
Start Up.................................................................... 19
General.............................................................. 19
Topping Off System Charge.................................. 19
Safety Practices.................................................. 19
Important Installer Note....................................... 20
High and Low Pressure Switch.............................. 20
Three Phase Scroll Compressor Start Up
Information......................................................... 20
Phase Monitor..................................................... 20
Condenser Fan Operation..................................... 20
Service Hints...................................................... 20
Vent Connection Plug........................................... 20
Sequence of Operation......................................... 21
Pressure Service Ports......................................... 21
Defrost Cycle...................................................... 21
Service...................................................................... 24
Solid State Heat Pump Control Troubleshooting
Procedure.......................................................... 24
Checking Temperature Sensor Outside
Unit Circuit......................................................... 25
Fan Blade Setting Dimensions.............................. 26
Removal of Fan Shroud........................................ 26
R-410A Refrigerant Charge.................................. 26
Tables
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7A
Table 7B
Table 8
Table 9
Table 10
Table 11
Table 12
Table 13
Table 14
Wall Thermostats................................. 16
Humidity Controls................................ 16
CO2 Controller...................................... 16
Thermostat Wire Size............................ 16
Troubleshooting................................... 24
Temperature vs. Resistance................... 25
Fan Blade Dimension........................... 26
Cooling Pressure.................................. 27
Heating Pressure.................................. 27
Electrical Specifications....................... 28
Recommended Airflow.......................... 25
Indoor Blower Performance................... 25
Maximum ESP of Operation
Electric Heat Only Tables...................... 30
Electric Heat....................................... 30
Optional Accessories............................ 31
Vent and Control Options...................... 32
GETTING OTHER INFORMATION AND PUBLICATIONS
These publications can help when installing the heat
pump. They can usually be found at the local library
or purchased directly from the publisher. Be sure to
consult the current edition of each standard.
National Electrical Code.......................ANSI/NFPA 70
Standard for the Installation...............ANSI/NFPA 90A
of Air Conditioning and Ventilating Systems
Standard for Warm Air........................ANSI/NFPA 90B
Heating and Air Conditioning Systems
Load Calculation for .......................... ACCA Manual J
Residential Winter and Summer Air Conditioning
Duct Design for Residential................ ACCA Manual D
Winter and Summer Air Conditioning and Equipment
Selection
For more information, contact these publishers:
ACCA
Air Conditioning Contractors of America
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: (202) 483-9370
Fax: (202) 234-4721
ANSI
American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: (212) 642-4900
Fax: (212) 302-1286
ASHRAE
American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: (404) 636-8400
Fax: (404) 321-5478
NFPA
National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: (800) 344-3555
Fax: (617) 984-7057
Manual2100-660
Page
3 of 32
WALL MOUNT GENERAL INFORMATION
HEAT PUMP WALL MOUNT MODEL NOMENCLATURE
J
42 H
A –
A
10
X
X
X
X
X
CONTROL MODULES
(See Spec. Sheet S3533)
REVISION
MODEL NUMBER
KW 
CAPACITY
18 - 1½ Ton
24 - 2 Ton
30 - 2½ Ton
36 - 3 Ton
42 - 3½ Ton
48 - 4 Ton
60 - 5 Ton
H - Heat Pump
VOLTS & PHASE
A-230/208/60/1
B-230/208/60/3
C-460/60/3
VENTILATION OPTIONS
X - Barometric Fresh Air Damper (Standard)
Z - Economizer (Full Flow) - Enthalpy
E
COLOR OPTIONS
X-Beige
COIL OPTIONS
X-Standard
OUTLET OPTIONS
X - Front
FILTER OPTIONS
P -2" Pleated
For 0 KW and circuit breakers (230/208 volt) or toggle disconnect (460V) applications, insert 0Z in the KW field of the model number.
NOTE: Vent option X is without exhaust capability. May require separate field-supplied barometric relief in building.
SHIPPING DAMAGE
Upon receipt of equipment, the carton should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact
the last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.
GENERAL
The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.
The refrigerant system is completely assembled and
charged. All internal wiring is complete.
The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and
return ducts.
These instructions explain the recommended method
to install the air cooled self-contained unit and the
electrical wiring connections to the unit.
These instructions and any instructions packaged with
any separate equipment required to make up the entire
air conditioning system should be carefully read before
beginning the installation. Note particularly “Starting
Procedure” and any tags and/or labels attached to the
equipment.
While these instructions are intended as a general
recommended guide, they do not supersede any
national and/or local codes in any way. Authorities
Manual2100-660
Page
4 of 32
having jurisdiction should be consulted before the
installation is made. See page 3 for information on
codes and standards.
Size of unit for a proposed installation should be
based on heat loss/gain calculation made according
to methods of Air Conditioning Contractors of America
(ACCA). The air duct should be installed in accordance
with the Standards of the National Fire Protection
Association for the Installation of Air Conditioning and
Ventilating Systems of Other Than Residence Type,
NFPA No. 90A, and Residence Type Warm Air Heating
and Air Conditioning Systems, NFPA No. 90B. Where
local regulations are at a variance with instructions,
installer should adhere to local codes.
DUCT WORK
All duct work, supply and return, must be properly
sized for the design airflow requirement of the
equipment. Air Conditioning Contractors of America
(ACCA) is an excellent guide to proper sizing. All duct
work or portions thereof not in the conditioned space
should be properly insulated in order to both conserve
energy and prevent condensation or moisture damage.
Refer to Maximum ESP of Operation Electric Heat
Table 11 on page 30.
Design the duct work according to methods given by
the Air Conditioning Contractors of America (ACCA).
When duct runs through unheated spaces, it should
be insulated with a minimum of 1" of insulation. Use
insulation with a vapor barrier on the outside of the
insulation. Flexible joints should be used to connect
the duct work to the equipment in order to keep the
noise transmission to a minimum.
Models J18 and J24 are approved for 0" clearance
to the supply duct. For models J30, J36, J42, J48
and J60, a 1/4" clearance to combustible material for
the first 3' of duct attached to the outlet air frame is
required. See MOUNTING THE UNIT on page 6 and
Figures 3A-D (pages 8-11) and Figure 4 (page 12) for
further details.
Ducts through the walls must be insulated and all joints
taped or sealed to prevent air or moisture entering the
wall cavity.
Some installations may not require any return air duct.
A metallic return air grille is required with installations
not requiring a return air duct. The spacing between
louvers on the grille shall not be larger than 5/8".
Any grille that meets with 5/8" louver criteria may be
used. It is recommended that Bard Return Air Grille
Kit RG-2W through RG-5W or RFG-2W through RFG5W be installed when no return duct is used. Contact
distributor or factory for ordering information. If using
a return air filter grille, filters must be of sufficient size
to allow a maximum velocity of 400 fpm.
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to
installation only in a single story structure.
FILTER
A 2" pleated filter is standard with each unit. The
filter slides into position making it easy to service. This
filter can be serviced from the outside by removing the
filter access panel.
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in
the service door.
If the unit is equipped with a fresh air damper
assembly, the assembly is shipped already attached
to the unit. The damper blade is locked in the
closed position. To allow the damper to operate, the
maximum and minimum blade position stops must be
installed (see Figure 1).
All capacity, efficiency and cost of operation
information is based upon the fresh air blank-off plate
in place and is recommended for maximum energy
efficiency.
The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.
CONDENSATE DRAIN
A plastic drain hose extends from the drain pan at
the top of the unit down to the unit base. There are
openings in the unit base for the drain hose to pass
through. In the event the drain hose is connected to
a drain system of some type, it must be an open or
vented type system to assure proper drainage.
FIGURE 1
Fresh Air Damper
BLADE IS LOCKED CLOSED
FOR SHIPPING
MIS-938
Manual2100-660
Page
5 of 32
INSTALLATION
WALL MOUNTING INFORMATION
1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figure 3.
2. On wood frame walls, the wall construction must
be strong and rigid enough to carry the weight of
the unit without transmitting any unit vibration.
3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the
weight of the installed unit.
NOTE: Before mounting the heat pump unit,
consideration should be given to the
condensate removal from the outdoor coil
when in heating mode. The unit must be
mounted high enough above grade to ensure
that ice will not build up under the unit and
come into contact with the base of the unit. If
allowed, this could cause damage to the coil
and other base components. Also, be sure
there are no air obstructions to the sides or
front of the unit, such as bushes or fences,
that would inhibit condenser airflow.
MOUNTING THE UNIT
1. These units are secured by wall mounting brackets
which secure the unit to the outside wall surface at
both sides. A bottom mounting bracket, attached
to skid for shipping, is provided for ease of
installation, but is not required.
2. The unit itself is suitable for 0" clearance, but the
supply air duct flange and the first 3' of supply
air duct require a minimum of 1/4" clearance
to combustible material for model series J30,
J36, J42, J48 and J60. However, it is generally
recommended that a 1" clearance is used for
ease of installation and maintaining the required
clearance to combustible material. See Figures
3A-D for details on opening sizes.
WARNING
Failure to provide the 1/4" clearance between
the supply duct and a combustible surface
for the first 3' of duct can result in fire causing
damage, injury or death.
Manual2100-660
Page
6 of 32
Minimum Clearances Required to
Combustible Materials
MODELS
SUPPLY AIR DUCT
FIRST 3'
CABINET
J18H/J24H
0"
0"
J30H/J36H
1/4"
0"
J42H/J48H/J60H
1/4"
0"
Clearances Required for Service Access
and Adequate Condenser Airflow
MODELS
LEFT SIDE
RIGHT SIDE
J18H, J24H, J30H, J36H
15"
20"
J42H, J48H, J60H
20"
20"
3. Locate and mark lag bolt locations and bottom
mounting bracket location (see Figures 3A-D).
4. Mount bottom mounting bracket.
5. Hook top rain flashing, attached to front-right of
supply flange for shipping, under back bend of top.
6. Position unit in opening and secure with fasteners
sufficient for the application such as 5/16" lag/
anchor/carriage bolts; use 7/8" diameter flat washers
on the bolts.
7. Secure rain flashing to wall and caulk across entire
length of top (see Figures 3A-D).
8. For additional mounting rigidity, the return air
and supply air frames or collars can be drilled
and screwed or welded to the structural wall itself
(depending upon wall construction). Be sure to
observe required clearance if combustible wall.
9. On side-by-side installations, maintain a minimum
of 20" clearance on right side to allow access to
control panel and heat strips, and to allow proper
airflow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
NOTE: Refer to Figures 2 – 7 for dimensions and various mounting configurations.
FIGURE 2
Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal)
SUPPLY
RETURN
A
C
MODEL
WIDTH DEPTH HEIGHT
(W)
(D)
(H)
J18HA
J24HA
33.300
17.125
74.563
7.88 19.88 11.88 19.88 35.00 10.88 29.75 20.56 30.75 32.06 33.25 31.00 2.63 34.13 26.06 10.55 4.19 12.00
9.00
J30HA
J36HA
38.200
17.125
74.563
7.88 27.88 13.88 27.88 40.00 10.88 29.75 17.93 30.75 32.75 33.25 31.00 2.75 39.13 26.75
9.00
J42HA
J48HA
42.075
22.432
84.875
9.88 29.88 15.88 29.88 43.88 13.56 31.66 30.00 32.68 26.94 34.69 32.43 3.37 43.00 23.88 10.00 1.44 16.00
1.88
J60HA
42.075
22.432
93.000
9.88 29.88 15.88 29.88 43.88 13.56 37.00 30.00 40.81 35.06 42.81 40.56 3.37 43.00 31.00 10.00 1.44 16.00
10.00
B
B
E
F
G
I
J
K
L
M
N
O
P
Q
9.14
R
S
4.19 12.00
T
All dimensions are in inches. Dimensional drawings are not to scale.
W
Built In
Rain Hood
4° Pitch
Heater
Access
Panel
Electric
Heat
C. Breaker/
Disconnect
Access Panel
(Lockable)
Hood for CRV and
ECON models
only
5.88
F
G
1
E
O
D
.44
2.13
A
1.250
I
Filter Access Panel
Ventilation Air
Condenser
Air Outlet
Standard
3"
flush vent
door for nonERV/CRV
Econ.
models
C H
High Voltage
Electrical
Entrance
Cond.
Air
Inlet
K
J
R
S
B
Top Rain
Flashing
Shipping
Location
S
Optional
Electrical
Entrances
Return Air Opening
S
L
M
S
P
T
Drain
Front View
Supply Air Opening
S
7.00
Low Voltage
Electrical
Entrance
Side Wall
Mounting
Brackets
(Built In)
Side View
N
Q
Back View
Bottom Installation
Bracket
MIS-3796
Manual2100-660
Page
7 of 32
Manual2100-660
Page
8 of 32
13
3 16 "
9"
12"
12"
12"
12"
12"
4"
Typ.
1"
20"
2"
1
1
7 16 "
38"
4"
Typ.
Return Opening
Supply Opening
20"
5"
Wall Opening and Hole Location View
2"
7
8"
3"
1
7 16 "
12"
1
20 2 "
8"
WALL
TOP
HEATER ACCESS
PANEL
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF TOP.
FIGURE 3A
J18H, J24H
Mounting Instructions
Right Side View
MIS-3157 A
J**A UNIT SHOWN, J**L UNIT
CONTROLS AND HEATER ACCESS
IS ON OPPOSITE (LEFT) SIDE.
NOTES:
IT IS RECOMMENDED THAT A BEAD OF
SILICONE CAULKING BE PLACED BEHIND
THE SIDE MOUNTING FLANGES AND UNDER
TOP FLASHING AT TIME OF INSTALLATION.
RETURN AIR
OPENING
SUPPLY AIR
DUCT
WALL STRUCTURE
FOAM AIR SEAL
RAIN FLASHING
SUPPLIED
Manual2100-660
Page
9 of 32
E
7
8"
1
11
4 16 "
9 16 "
7
8"
4"
Typ.
38"
1
C
11
4 16 "
14"
E
B
Wall Opening and Hole Location View
4"
Typ.
7
28"
28"
12"
12"
Return Opening
Supply Opening
A
12"
12"
12"
D
C
7
48"
WALL
4 5/8 4 7/16 16 7/8
D
REQUIRED DIMENSIONS TO MAINTAIN
RECOMMENDED 1" CLEARANCE FROM 29 7/8 9 7/8
COMBUSTIBLE MATERIALS
C
5 3/8 3 11/16 17 5/8
B
REQUIRED DIMENSIONS TO MAINTAIN
28 3/8 8 3/8
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
A
TOP
HEATER ACCESS
PANEL
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF TOP.
FIGURE 3B
J30H, J36H
Mounting Instructions
Right Side View
MIS-3158 A
J*R UNIT SHOWN, J*L UNIT
CONTROLS AND HEATER ACCESS
IS ON OPPOSITE (LEFT) SIDE.
NOTES:
IT IS RECOMMENDED THAT A BEAD OF
SILICONE CAULKING BE PLACED BEHIND
THE SIDE MOUNTING FLANGES AND UNDER
TOP FLASHING AT TIME OF INSTALLATION.
RETURN AIR
OPENING
SUPPLY AIR
DUCT
1/4" CLEARANCE ON ALL
FOUR SIDES OF SUPPLY
AIR DUCT IS REQUIRED
FROM COMBUSTABLE
MATERIALS
WALL STRUCTURE
FOAM AIR SEAL
RAIN FLASHING
SUPPLIED
Manual2100-660
Page
10 of 32
2
7
18"
16"
16"
16"
16"
16"
1
1
4"
Typ.
1
1
62"
38"
C
5 1/2
6 1/4
C
Dimension is 21" on 95" tall units.
Dimension is 10" on T48H1 & T60H1.
Dimension is 6" on T48H1 & T60H1.
4"
Typ.
1"
3"
30"
Return Opening
Supply Opening
A
12
10 1/2
B
Wall Opening and Hole Location View
3
2
1
1
62"
1
62"
C
32
REQUIRED DIMENSIONS TO MAINTAIN
RECOMMENDED 1" CLEARANCE FROM
COMBUSTIBLE MATERIALS
D
30 1/2
REQUIRED DIMENSIONS TO MAINTAIN
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
A
2
E
3
29
29 3/4
7
8"
28"
1
16"
E
B
1 1/4
D
TOP
HEATER ACCESS
PANEL
WALL
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
TOP.
FIGURE 3C
J42H, J48H
Mounting Instructions
Right Side View
NOTES:
MIS-416 E
IT IS RECOMMENDED THAT A BEAD OF
SILICONE CAULKING BE PLACED BEHIND
THE SIDE MOUNTING FLANGES AND UNDER
TOP FLASHING AT TIME OF INSTALLATION.
RETURN AIR
OPENING
SUPPLY AIR
DUCT
1/4" CLEARANCE ON ALL
FOUR SIDES OF SUPPLY
AIR DUCT IS REQUIRED
FROM COMBUSTABLE
MATERIALS
WALL STRUCTURE
FOAM AIR SEAL
RAIN FLASHING
SUPPLIED
Manual2100-660
Page
11 of 32
7
98"
16"
16"
16"
16"
16"
4"
Typ.
1"
3"
30"
4"
Typ.
Return Opening
Supply Opening
A
12
10 1/2
B
1
1
62"
38"
C
5 1/2
6 1/4
C
Wall Opening and Hole Location View
1
62"
1
62"
C
32
REQUIRED DIMENSIONS TO MAINTAIN
RECOMMENDED 1" CLEARANCE FROM
COMBUSTIBLE MATERIALS
D
30 1/2
REQUIRED DIMENSIONS TO MAINTAIN
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
A
2
7
8"
7
E
29
29 3/4
58"
16"
E
B
1 1/4
D
TOP
HEATER ACCESS
PANEL
WALL
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
TOP.
FIGURE 3D
J60H
Mounting Instructions
Right Side View
NOTES:
MIS-3789
IT IS RECOMMENDED THAT A BEAD OF
SILICONE CAULKING BE PLACED BEHIND
THE SIDE MOUNTING FLANGES AND UNDER
TOP FLASHING AT TIME OF INSTALLATION.
RETURN AIR
OPENING
SUPPLY AIR
DUCT
1/4" CLEARANCE ON ALL
FOUR SIDES OF SUPPLY
AIR DUCT IS REQUIRED
FROM COMBUSTABLE
MATERIALS
WALL STRUCTURE
FOAM AIR SEAL
RAIN FLASHING
SUPPLIED
FIGURE 4
Electric Heat Clearance
J30H, J36H, J42H, J48H, J60H
SEE NOTE BELOW
SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR
WALL-MOUNTED UNIT SHOWING 1/4" CLEARANCE
TO COMBUSTIBLE SURFACES.
WARNING
A minimum of 1/4" clearance must be maintained between the
supply air duct and combustible materials. This is required for the
first 3' of ducting.
It is important to insure that the 1/4" minimum spacing is maintained
at all points.
Failure to do this could result in overheating the combustible
material and may result in a fire causing damage, injury or death.
Manual2100-660
Page
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FIGURE 5
Wall Mounting Instructions
SEE FIGURES 3A-D – MOUNTING INSTRUCTIONS
FACTORY SUPPLIED
RAIN FLASHING.
MOUNT ON UNIT
BEFORE INSTALLATION
WALL STRUCTURE
SUPPLY AIR
OPENING
SUPPLY AIR
OPENING
SUPPLY AIR
DUCT
RETURN AIR
OPENING
RETURN AIR
OPENING
RETURN AIR
OPENING
WOOD OR STEEL SIDING
CONCRETE BLOCK WALL INSTALLATION
WOOD FRAME WALL INSTALLATION
BOTTOM MOUNTING
BRACKET. MOUNT ON
WALL BEFORE
INSTALLING UNIT.
SIDE VIEW
MIS-548 A
FIGURE 6
Wall Mounting Instructions
SEE UNIT DIMENSIONS, FIGURE 2,
FOR ACTUAL DIMENSIONS.
E + 1.000
ATTACH TO TOP
PLATE OF WALL
B
1.000
1.000" CLEARANCE
ALL AROUND DUCT
IF REQUIRED
INTERIOR FINISHED WALL
OVER FRAME
SUPPLY DUCT
OPENING
A
I
1.000" CLEARANCE
ALL AROUND DUCT
IF REQUIRED
RETURN DUCT
OPENING
EXTERIOR FINISH WALL
OVER FRAME
K
2x6
FRAMING MATERIAL
2 x 4'S, 2 x 6'S &/OR
STRUCTURAL STEEL
MIS-549 B
ATTACH TO BOTTOM
PLATE OF WALL
C
CL
THIS STRUCTURAL MEMBER
LOCATED TO MATCH STUD
SPACING FOR REST OF WALL.
A SECOND MEMBER MAY BE
REQUIRED FOR SOME WALLS.
Manual2100-660
Page
13 of 32
FIGURE 7
Common Wall Mounting Installations
SUPPLY DUCT MAY BE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
RAIN
FLASHING
RAFTERS
RAIN
FLASHING
FINISHED CEILING SURFACE
SUPPLY AIR DUCT
SUPPLY AIR DUCT
W/ GRILLE
FINISHED CEILING SURFACE
RETURN AIR
OPENING W/ GRILLE
RETURN AIR
OPENING W/ GRILLE
OUTSIDE
WALL
RAFTERS
OUTSIDE
WALL
FREE AIR FLOW
NO DUCT
DUCTED SUPPLY
RETURN AT UNIT
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
RAIN
FLASHING
RAFTERS
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
RAIN
FLASHING
SUPPLY AIR DUCT
SUPPLY AIR DUCT
LOWERED
CEILING
FINISHED
CEILING SURFACE
RETURN AIR
SPACE
WALL SLEEVE
CLOSET WALL
RETURN AIR GRILLE
FALSE WALL INSTALLATION
SUPPLY AIR
GRILLE
FINISHED CEILING
SURFACE
WALL
SLEEVE
FALSE WALL
OUTSIDE
WALL
RAFTERS
OUTSIDE
WALL
RAISED FLOOR
RETURN AIR
RETURN AIR
GRILLE
CLOSET INSTALLATION
MIS-550 C
Manual2100-660
Page
14 of 32
WIRING – MAIN POWER
Refer to the unit rating plate for wire sizing information
and maximum fuse or circuit breaker size. Each
outdoor unit is marked with a “Minimum Circuit
Ampacity”. This means that the field wiring used must
be sized to carry that amount of current. Depending
on the installed KW of electric heat, there may be
two field power circuits required. If this is the case,
the unit serial plate will so indicate. All models are
suitable only for connection with copper wire. Each
unit and/or wiring diagram will be marked “Use Copper
Conductors Only”. These instructions must be adhered
to. Refer to the National Electrical Code (NEC) for
complete current carrying capacity data on the various
insulation grades of wiring material. All wiring must
conform to NEC and all local codes.
For low voltage wiring, an 18 gauge copper, color-coded
cable is recommended. See Table 4 on page 16 for
more information.
Low Voltage Connections
These units use a 24-volt AC low voltage circuit.
The “RT” terminal is the 24V transformer output,
and the “R” terminal is the 24VAC hot terminal
for the operation of the equipment. “RT” and “R”
are connected with brass jumper bar which can be
removed and “RT” and “R” connected to external
NC (normally closed) contact such as a fire/smoke
detector that will cause immediate shutdown of the
equipment upon activation.
The disconnect access door on this unit may be locked
to prevent unauthorized access to the disconnect. To
convert for the locking capability, bend the tab located
in the bottom left-hand corner of the disconnect
opening under the disconnect access panel straight
out. This tab will now line up with the slot in the door.
When shut, a padlock may be placed through the hole
in the tab preventing entry.
“C” terminal is 24VAC common and is grounded.
“G” terminal is the indoor fan input.
“Y1” terminal is the 1st Stage input for cooling.
“Y2” terminal is the 2nd Stage compressor input for
cooling (if equipped with an economizer).
“B/W1” terminal is the reversing valve input. The
reversing valve must be energized for heating mode.
“W2” terminal is the 2nd stage heat (if equipped).
“W3” terminal is the emergency heat input. This
terminal energizes the emergency heat relay. This is not
applicable on units with dehumification.
“A” terminal is the ventilation input. This terminal
energizes any factory-installed ventilation option and
indoor blower.
“D” terminal is the dehumidification input. If
installed, this terminal energizes any factory-installed
dehumidification option.
"L/1" terminal is the compressor lockout output. This
terminal is activated on a high or low pressure trip by
the electronic heat pump control. This is a 24VAC
output.
See page 20 for important information on three phase
scroll compressor start ups.
LOW VOLTAGE CONNECTIONS FOR DDC CONTROL
The electrical data lists fuse and wire sizes (75°C
copper) for all models including the most commonly
used heater sizes. Also shown are the number of field
power circuits required for the various models with
heaters.
The unit rating plate lists a maximum fuse or circuit
breaker that is to be used with the equipment. The
correct size must be used for proper circuit protection
and also to assure that there will be no nuisance
tripping due to the momentary high starting current of
the compressor motor.
Standard Units
Units w/
Economizers
Fan Only
Energize G
Energize G
1st Stage
Cooling Mode
Energize Y1, G
Energize Y1, G
See Table 8 on page 28 for electrical specifications.
WIRING – LOW VOLTAGE WIRING
All 230/208V 1 phase and 3 phase equipment have
dual primary voltage transformers. All equipment
leaves the factory wired on 240V tap. For 208V
operation, reconnect from 240V to 208V tap. The
acceptable operating voltage range for the 240 and
208V taps are:
TAPRANGE
240
253 – 216
208
220 – 187
NOTE: The voltage should be measured at the field
power connection point in the unit and while
the unit is operating at full load (maximum
amperage operating condition).
2nd Stage
Cooling Mode
Energize Y1, Y2, G
Heat Pump Heating
Energize Y1, G,
B/W1
Energize Y1, G,
B/W1
2nd Stage Heating
w/heat pump
(if employed)
Energize Y1, G,
B/W1, W2
Energize Y1, G,
B/W1, W2
Ventilation
Energize A
Energize A
Dehumidification
(if employed)
Energize D
Energize D
Emergency Heat*
Energize G, W2,
W3
Energize G, W2,
W3
* Not applicable on units with dehumidification
Manual2100-660
Page
15 of 32
TABLE 1
Wall Thermostats
Part Number
8403-058
(TH5220D1151)
Predominate Features
2 stage Cool, 2 stage Heat; Electronic Non-Programmable;
HP or Conventional (Default: HP); Auto or Manual changeover
8403-060
(1120-445)
3 stage Cool; 3 stage Heat; Electronic Programmable/Non-Programmable;
HP or Conventional; Auto or Manual changeover; Dehumidification Output
CS9B-THO
3 Stage Heat, 3 Stage Cool; Programmable/Non-Programmable; HP or Conventional;
Auto or Manual Changeover; Humidity Sensor w/dehumidification; Motion Sensor
wIntelligent Learning Control; BACnet-compatible
CS9B-THOC
3 Stage Heat, 3 Stage Cool, Programmable/Non-Programmable; HP or Conventional;
Auto or Manual Changeover; Humidity Sensor w/dehumidification; CO2 Sensor; Motion
Sensor w/Intelligent Learning Control; BACnet-compatible
CS9BE-THO
3 Stage Heat, 3 Stage Cool, Programmable/Non-Programmable; HP or Conventional;
Auto or Manual Changeover; Humidity Sensor w/dehumidification; Motion Sensor
wIntelligent Learning Control; BACnet-compatible; Ethernet-compatible
CS9BE-THOC
3 Stage Heat, 3 Stage Cool, Programmable/Non-Programmable; HP or Conventional; Auto
or Manual Changeover; Humidity Sensor w/dehumidification; CO2 Sensor; Motion Sensor
w/Intelligent Learning Control; BACnet-compatible; Ethernet-compatible
TABLE 2
Humidity Controls
Part Number
8403-038
(H600A1014)
8403-047
(H200-10-21-10)
Predominate Features
SPDT switching, pilot duty 50VA @ 24V
Humidity range 20-80% RH
Electronic dehumidstat SPST closes-on-rise
Humidity range 10-90% with adjustable stops
TABLE 3
CO2 Controller
Part Number
8403-067
Predominate Features
Normally Open SPST relay closes-on-rise
24V dual wave length sensor. Default setting
950ppm, adjustable to 0-2000ppm
Default off setting 1000ppm, adjustable to
0-200 ppm can be calibrated
TABLE 4
Thermostat Wire Size
Transformer
VA
55
Manual2100-660
Page
16 of 32
FLA
2.3
Wire Gauge
20
18
16
14
12
gauge
gauge
gauge
gauge
gauge
Maximum
Distance
In Feet
45
60
100
160
250
FIGURE 8
Programmable Thermostat Connections
Completestat
Model #CS9B-THO or
Model #CS9BE-THO
SC
SC
SC
24V
COM
G
Y1
Y2
O/B
W2
L
W1/E
A
D
GND
Yellow
3
2
Thermostat
Bard #8403-060
R
C
G
Y1
Y2
O/B
W2
R
RT
C
G
Y1
Y2
B/W1
W2
A
3
L/1
W3/8
A
1
12-Pin
Vent Plug
9
YO/D
4
2
Unit Low
Voltage
Term. Strip
Red
L
W1/E
5
White
4
7
Blue
Orange
D
2
4
3
5
6
4
6
3
2
5
11
Optional CO2 Controller
Bard Part #8403-067
6
7
1
24VAC
2
3 CO2 OUT
4 TEMP-OUT
5
6
7
8
4
12
10
ALL VENT OPTIONS PLUG IN HERE
If not equipped with a ventilation option to plug in, a jumper plug must be installed.
2
Factory installed jumper. Remove jumper and connect
to N.C fire alarm circuit if emergency shutdown required.
Wire not needed below 15KW.
3
Wire required for dehumidification models only.
4
Do not connect "A" from thermostat if optional CO2 controller is used
0-10 VDC modulating C02 control signal for modulating ventilation control (optional for
ECON only - see vent instruction manuals)
Change model configuration from heat pump to heat/cool. Must be configured to programmable
and fan set to be programmed fan for the "A" output to function during scheduled occupied
7 periods. Must be configured for multi-stage for Y1 output to be active 1st stage cooling. For
dehumidification, must be configured for "No Economizer" for YO/D to be active for humidity
control.
5
Relay Provided with Completestat
8 Do not add these wires if setting up for modulating control. See note 7.
1
6
MIS-3821
Manual2100-660
Page
17 of 32
FIGURE 9
Non-Programmable Thermostat Connections
(not for use on models equipped with an economizer)
Units With Dehumidification
8403-038
Mechanical Humidistat
8
8403-058
(TH522OD1151)
8403-059
(TH522OD1219/U)
R
Rc
C
G
Y
O/B
AUX
1 Stage Cool
2 Stage Heat
E
5
6
4
3
7
2
Optional CO2 Controller
Bard Part #8403-067
3
1
24VAC
2
3 CO2 OUT
4 TEMP-OUT
5
6
6
Unit Low
Voltage
Term. Strip
R
RT
C
G
Y1
Y2
B/W1
W2
W3/8
L/1
A
1
12-Pin
Vent Plug
D
2
4
3
5
6
4
9
6
3
2
5
11
8403-047
Electronic Humidistat
7
7
5
4
12
10
ALL VENT OPTIONS PLUG IN HERE
If not equipped with a ventilation option to plug in, a jumper plug must be installed.
Factory installed jumper. Remove jumper and connect
1 to N.C fire alarm circuit if emergency shutdown required.
2
Wire not needed below 15KW.
3
Wire required for dehumidification models only.
For vent operation, add jumper if optional CO2 controller is not used.
4 Vent will run while blower is energized.
Manual2100-660
Page
18 of 32
5 Do not add these wires if setting up for modulating control. See note 7.
6 0-10 VDC Modulating CO2 control signal for modulating ventilation control
(Optional for ECON Only) - See vent installation manual.
For 8403-059, change "system type", set up Function 1, From 6 (2 Heat/ 1 Cool)
7 to 5 (2 Heat / 1 Cool Heat pump). For 8403-058, No change required.
8 Jumper needs added.
MIS-3844
START UP
THESE UNITS REQUIRE R-410A
REFRIGERANT AND POLYOL ESTER OIL.
GENERAL
1. Use separate service equipment to avoid cross
contamination of oil and refrigerants.
2. Use recovery equipment rated for R-410A
refrigerant.
3. Use manifold gauges rated for R-410A (800
psi/250 psi low).
4. R-410A is a binary blend of HFC-32 and HFC125.
REMEMBER: When adding R-410A refrigerant, it
must come out of the charging cylinder/tank as a
liquid to avoid any fractionation, and to ensure optimal
system performance. Refer to instructions for the
cylinder that is being utilized for proper method of
liquid extraction.
WARNING
Failure to conform to these practices
could lead to damage, injury or death.
5. R-410A is nearly azeotropic—similar to R-22 and
R-12. Although nearly azeotropic, charge with
liquid refrigerant.
SAFETY PRACTICES
6. R-410A operates at 40-70% higher pressure
than R-22 and systems designed for R-22 cannot
withstand this higher pressure.
2. Use gloves and safety glasses. Polyol Ester oils
can be irritating to the skin, and liquid refrigerant
will freeze the skin.
7. R-410A has an ozone depletion potential of zero,
but must be reclaimed due to its global warming
potential.
3. Never use air and R-410A to leak check; the
mixture may become flammable.
8. R-410A compressors use Polyol Ester oil.
9. Polyol Ester oil is hygroscopic; it will rapidly absorb
moisture and strongly hold this moisture in the oil.
10.A liquid line dryer must be used—even a deep
vacuum will not separate moisture from the oil.
11.Limit atmospheric exposure to 15 minutes.
12.If compressor removal is necessary, always plug
compressor immediately after removal. Purge with
small amount of nitrogen when inserting plugs.
TOPPING OFF SYSTEM CHARGE
If a leak has occurred in the system, Bard
Manufacturing recommends reclaiming, evacuating
(see criteria above) and charging to the nameplate
charge. If done correctly, topping off the system
charge can be done without problems.
With R-410A, there are no significant changes in the
refrigerant composition during multiple leaks and
recharges. R-410A refrigerant is close to being an
azeotropic blend (it behaves like a pure compound
or single component refrigerant). The remaining
refrigerant charge, in the system, may be used after
leaks have occurred and then “top-off” the charge by
utilizing the pressure charts on the inner control panel
cover as a guideline.
1. Never mix R-410A with other refrigerants.
4. Do not inhale R-410A—the vapor attacks
the nervous system, creating dizziness, loss
of coordination and slurred speech. Cardiac
irregularities, unconsciousness and ultimately
death can result from breathing this concentration.
5. Do not burn R-410A. This decomposition
produces hazardous vapors. Evacuate the area if
exposed.
6. Use only cylinders rated DOT4BA/4BW 400.
7. Never fill cylinders over 80% of total capacity.
8. Store cylinders in a cool area, out of direct
sunlight.
9. Never heat cylinders above 125°F.
10.Never trap liquid R-410A in manifold sets, gauge
lines or cylinders. R-410A expands significantly
at warmer temperatures. Once a cylinder or line is
full of liquid, any further rise in temperature will
cause it to burst.
Manual2100-660
Page
19 of 32
IMPORTANT INSTALLER NOTE
PHASE MONITOR
For improved start-up performance, wash the indoor
coil with dishwashing detergent.
All units with three phase scroll compressors are
equipped with a three phase line monitor to prevent
compressor damage due to phase reversal.
HIGH AND LOW PRESSURE SWITCH
All J**H Series wall-mounted heat pump models are
supplied with a remote reset for the high and low
pressure switch. If tripped, this pressure switch may
be reset by turning the thermostat off then back on
again.
THREE PHASE SCROLL COMPRESSOR
START UP INFORMATION
Scroll compressors, like several other types of
compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with
single phase compressors since they will always start
and run in the proper direction.
However, three phase compressors will rotate in either
direction depending upon phasing of the power.
Since there is a 50-50 chance of connecting power
in such a way as to cause rotation in the reverse
direction, verification of proper rotation must be made.
Verification of proper rotation direction is made by
observing that suction pressure drops and discharge
pressure rises when the compressor is energized.
Reverse rotation also results in an elevated sound level
over that with correct rotation, as well as substantially
reduced current draw compared to tabulated values.
The phase monitor in this unit is equipped with two
LEDs. If the Y signal is present at the phase monitor
and phases are correct, the green LED will light.
If phases are reversed, the red fault LED will be lit and
compressor operation is inhibited.
If a fault condition occurs, reverse two of the supply
leads to the unit. Do not reverse any of the unit factory
wires as damage may occur.
CONDENSER FAN OPERATION
Applies to J42, J48 and J60 models only. The
condenser fan motor on 230/208 volt, one and three
phase, 60 HZ units is a two-speed motor that comes
factory wired on high speed for peak performance. If
ambient conditions permit, it can be reconnected to
low speed (red wire) for lower sound level (see unit
wiring diagram).
SERVICE HINTS
1. Caution owner/operator to maintain clean air filters
at all times and to not needlessly close off supply
and return air registers. This reduces airflow
through the system, which shortens equipment
service life as well as increasing operating costs.
Verification of proper rotation must be made at the
time the equipment is put into service. If improper
rotation is corrected at this time, there will be no
negative impact on the durability of the compressor.
However, reverse operation for over 1 hour may have a
negative impact on the bearing due to oil pump out.
2. Check all power fuses or circuit breakers to be sure
they are the correct rating.
NOTE: If compressor is allowed to run in reverse
rotation for several minutes, the compressor’s
internal protector will trip.
All units are equipped with a vent connection plug
in the side of the control panel for the different
ventilation packages to plug in to. If the compressor
will not start and there is no "Y1" at the compressor
control module, first check to make sure that either
the optional vent is plugged into the vent connection
plug or the supplied jumper plug is in place. The unit
will not operate without anything plugged in. This plug
is located on the side of the control panel behind the
front vent door (behind the filter access door). If the
unit is supplied with a factory-installed vent package,
it will be plugged in but the jumper plug will also be
tethered next to the connection for troubleshooting
purposes, if necessary.
All three phase ZP compressors are wired identically
internally. As a result, once the correct phasing
is determined for a specific system or installation,
connecting properly phased power leads to the same
Fusite terminal should maintain proper rotation
direction.
The direction of rotation of the compressor may be
changed by reversing any two line connections to the
unit.
Manual2100-660
Page
20 of 32
3. Periodic cleaning of the outdoor coil to permit full
and unrestricted airflow circulation is essential.
VENT CONNECTION PLUG
SEQUENCE OF OPERATION
COOLING – Circuit R-Y makes at thermostat pulling
in compressor contactor, starting the compressor
and outdoor motor. The G (indoor motor) circuit is
automatically completed on any call for cooling operation
or can be energized by manual fan switch on subbase for
constant air circulation.
HEATING – A 24V solenoid coil on reversing valve
controls heating cycle operation. Two thermostat options,
one allowing “Auto” changeover from cycle to cycle
and the other constantly energizing solenoid coil during
heating season, thus eliminating pressure equalization
noise except during defrost, are to be used. On “Auto”
option a circuit is completed from R-B/W1 and R-Y
on each heating “on” cycle, energizing reversing valve
solenoid and pulling in compressor contactor starting
compressor and outdoor motor. R-G also make starting
indoor blower motor. Heat pump heating cycle now in
operation. The second option has no “Auto” changeover
position, but instead energizes the reversing valve
solenoid constantly whenever the system switch on
subbase is placed in “Heat” position, the “B” terminal
being constantly energized from R. A thermostat demand
for heat completes R-Y circuit, pulling in compressor
contactor starting compressor and outdoor motor. R-G
also make starting indoor blower motor.
PRESSURE SERVICE PORTS
High and low pressure service ports are installed on
all units so that the system operating pressures can
be observed. Pressure tables covering all models can
be found on page 27. It is imperative to match the
correct pressure table to the unit by model number.
This unit employs high-flow Coremax valves instead of
the typical Shrader type valves.
WARNING! Do NOT use a Schrader valve core removal
tool with these valves. Use of such a tool could result
in eye injuries or refrigerant burns!
To change a Coremax valve without first removing the
refrigerant, a special tool is required which can be
obtained at www.fastestinc.com/en/SCCA07H. See the
replacement parts manual for replacement core part
numbers.
DEFROST CYCLE
The defrost cycle is controlled by temperature and time
on the solid state heat pump control.
When the outdoor temperature is in the lower
40°F temperature range or colder, the outdoor coil
temperature is 32°F or below. This coil temperature
is sensed by the coil temperature sensor mounted near
the bottom of the outdoor coil. Once coil temperature
reaches 30°F or below, the coil temperature sensor
sends a signal to the control logic of the heat pump
control and the defrost timer will start accumulating
run time.
After 30, 60 or 90 minutes of heat pump operation at
30°F or below, the heat pump control will place the
system in the defrost mode.
During the defrost mode, the refrigerant cycle switches
back to the cooling cycle, the outdoor motor stops,
electric heaters are energized, and hot gas passing
through the outdoor coil melts any accumulated frost.
When the temperature rises to approximately 57°F, the
coil temperature sensor will send a signal to the heat
pump control which will return the system to heating
operations automatically.
If some abnormal or temporary condition such as a
high wind causes the heat pump to have a prolonged
defrost cycle, the heat pump control will restore the
system to heating operation automatically after 8
minutes.
The heat pump defrost control board has an option of
30, 60 or 90-minute setting. By default, this unit is
shipped from the factory with the defrost time on the
60-minute pin. If circumstances require a change
to another time, remove the wire from the 60-minute
terminal and reconnect to the desired terminal. Refer
to Figure 10 on page 23.
There is a cycle speed up jumper on the control. This
can be used for testing purposes to reduce the time
between defrost cycle operation without waiting for
time to elapse.
Use a small screwdriver or other metallic object, or
another 1/4" QC, to short between the SPEEDUP
terminals to accelerate the HPC timer and initiate
defrost.
Be careful not to touch any other terminals with the
instrument used to short the SPEEDUP terminals.
It may take up to 10 seconds with the SPEEDUP
terminals shorted for the speedup to be completed and
the defrost cycle to start.
As soon as the defrost cycle kicks in remove the
shorting instrument from the SPEEDUP terminals.
Otherwise the timing will remain accelerated and
run through the 1-minute minimum defrost length
sequence in a matter of seconds and will automatically
terminate the defrost sequence.
There is an initiate defrost jumper (sen jump) on the
control that can be used at any outdoor ambient during
the heating cycle to simulate a 0°F coil temperature.
This can be used to check defrost operation of the unit
without waiting for the outdoor ambient to fall into the
defrost region.
By placing a jumper across the SEN JMP terminals (a
1/4" QC terminal works best) the defrost sensor
mounted on the outdoor coil is shunted out and will
Manual2100-660
Page
21 of 32
activate the timing circuit. This permits the defrost
cycle to be checked out in warmer weather conditions
without the outdoor temperature having to fall into the
defrost region.
In order to terminate the defrost test, the SEN JMP
jumper must be removed. If left in place too long, the
compressor could stop due to the high pressure control
opening because of high pressure condition created
by operating in the cooling mode with outdoor fan off.
Pressure will rise fairly fast as there is likely no actual
frost on the outdoor coil in this artificial test condition.
There is also a 5-minute compressor time delay
function built into the HPC. This is to protect the
compressor from short cycling conditions. The board’s
LED will have a fast blink rate when in the compressor
time delay. In some instances, it is helpful to the
service technician to override or speed up this timing
period, and shorting out the SPEEDUP terminals for a
few seconds can do this.
Low Pressure Switch Bypass Operation
The control has a selectable (SW1) low pressure switch
bypass set up to ignore the low pressure switch input
during the first (30, 60, 120 or 180 seconds) of “Y”
operation.
After this period expires, the control will then monitor
the low pressure switch input normally to make sure
that the switch is closed during “Y” operation.
High Pressure Switch Operation
The control has a built-in lockout system that allows
the unit to have the high pressure switch trip up to two
times in 1 hour and only encounter a “soft” lockout.
A “soft” lockout shuts the compressor off and waits
for the pressure switch to reset, which at that point
then allows the compressor to be restarted as long
as the 5-minute short cycle timer has run out. If the
high pressure switch trips a third time within 1 hour,
the unit is in “hard” lockout indicating something is
certainly wrong and it will not restart itself.
Manual2100-660
Page
22 of 32
FIGURE 10
Defrost Control Board
LOW PRESSURE BYPASS TIMER SWITCH
*(FACTORY SETTING 120 SECONDS)
SW SW
1
2 TIME (SEC)
OFF OFF
30
ON OFF
60
120*
OFF ON
ON ON
180
OFF
ON
ACCUMULATED DEFROST TIME TIMER
(FACTORY SETTING 60 MIN.)
Model
Setting
J18HA
60
J24HA
60
J30HA
30
J36HA
60
J42HA
60
J48HA
60
J60HA
30
MIS-2668 A
Manual2100-660
Page
23 of 32
SERVICE
SOLID STATE HEAT PUMP CONTROL
TROUBLESHOOTING PROCEDURE
1. NOTE: A thorough understanding of the defrost
cycle sequence is essential. Review that section
(page 21) prior to troubleshooting the control.
Turn on AC power supply to unit.
NOTE: If there was no power to 24 volt transformer,
the compressor and outdoor fan motor will not
start for 5 minutes. This is because of the
compressor short cycle protection.
LED BLINK CODES
BLINK
2. Turn thermostat blower switch to “fan on”—
the indoor blower should start. (If it doesn’t,
troubleshoot indoor unit and correct problem.)
FUNCTION
Slow
Normal function (1.0 sec on/1.0 sec off)
3. Turn thermostat blower to “auto” position. Indoor
blower should stop. NOTE: Many models have a
1-minute blower time delay on “off” command;
wait for this to time out.
Fast
Compressor Delay timer active
(0.1 sec on/0.1 sec off)
4. Set system switch to “heat” or “cool”. Adjust
thermostat to call for heat or cool. The indoor blower, compressor and outdoor fan should start.
1
Low pressure switch failure
2
High pressure switch failure/“Soft” Lockout
3
Defrost mode active
4
High pressure switch failure/“Hard” Lockout
TABLE 5 – Troubleshooting
Sympton
Compressor
will not start
(heating or
cooling)
Description, Check and Possible Causes
What & How to Check / Repair
1. Check for LED illumination.
Is there an LED illuminated on the board (flashing)?
Yes = go to Step #2; No = go to Step #3
2. Check for error codes.
Is the LED flashing a Code?
Yes = go to Step #4; No = go to Step #8
3. Check for power at board.
Is there 24 volts AC between R and C?
Yes = go to Step #13; No = go to Step #9
4. Check codes.
What code is blinking?
Code "1", go to Step #6; Code "2", go to Step#7; Fast Blink, go to Step #5
5. Compressor delay active.
Check for proper operation; if still needed, go back to Step #1.
Wait for 5 minute delay or jump board's "speed up pins".
6. Low pressure fault.
Check wiring circuit and unit pressures.
7. High pressure fault.
Check wiring circuit and unit pressures.
8. Check for Compressor input signal.
Is there 24 volts AC between Y and C?
Yes = go to Step #10; No = go to Step #11
9. No power to board.
The unit either does not have unit voltage, the transformer is bad or the unit wiring is incorrect.
10. Check for Compressor output signal.
Is there 24 volts AC between CC & C?
Yes = go to Step #12; No = go to Step #13
11. No "Y" compressor input signal.
Check thermostat wiring, incorrect phase of unit (see section on Phase Monitor), and finally unit wiring.
12. No "CC" compressor output signal.
Check compressor contactor for proper operation and finally check compressor.
13. Faulty board.
Fan outdoor
Heat pump control defective
motor does
not run
Motor defective
(cooling or
heating except
during defrost) Motor capacitor defective
Reversing
Heat pump control defective
valve does not
energize
(heating only) Reversing valve solenoid coil defective
Replace defrost board.
Check across fan relay on heat pump control. (Com-NC)
Replace heat pump control.
Check for open or shorted motor winding. Replace motor.
Check capacitor rating. Check for open or shorted capacitor. Replace capacitor.
Check for 24V between RV-C and B-C.
1. Check control circuit wiring.
2. Replace heat pump control.
Check for open or shorted coil.
Replace solenoid coil.
Unit will not
go into defrost Temperature sensor or heat pump control defective
(heating only)
Disconnect temperature sensor from board and jumper across "SPEEDUP" terminals and "SEN
JMP" terminals. This should cause the unit to go through a defrost cycle within one minute.
1. If unit goes through defrost cycle, replace temperature sensor.
2. If unit does not go through defrost cycle, replace heat pump control.
Unit will not
come out of
Temperature sensor or heat pump control defective
defrost
(heating only)
Jumper across "SPEEDUP" terminal.
This should cause the unit to come out of defrost within one minute.
1. If unit comes out of defrost cycle, replace temperature sensor.
2. If unit does not come out of defrost cycle, replace heat pump control.
Manual2100-660
Page
24 of 32
CHECKING TEMPERATURE SENSOR
OUTSIDE UNIT CIRCUIT
3. Check resistance reading to chart of resistance.
Use sensor ambient temperature. (Tolerance of
part is ± 10%.)
1. Disconnect temperature sensor from board and
from outdoor coil.
2. Use an ohmmeter to measure the resistance of the
sensor. Also use ohmmeter to check for short or
open.
4. If sensor resistance reads very low, sensor is
shorted and will not allow proper operation of the
heat pump control.
5. If sensor is out of tolerance, shorted, open or reads
very low ohms, it should be replaced.
Temperature F vs. Resistance R of Temperature Sensor
F
R
F
R
F
R
F
R
-25.0
196871
13.0
56985
53.0
19374
89.0
7507
-24.0
190099
14.0
55284
52.0
18867
90.0
7334
-23.0
183585
15.0
53640
53.0
18375
91.0
7165
-22.0
177318
16.0
52051
54.0
17989
92.0
7000
-21.0
171289
17.0
50514
55.0
17434
93.0
6840
-20.0
165487
18.0
49028
56.0
16984
94.0
6683
-19.0
159904
19.0
47590
57.0
16547
95.0
6531
-18.0
154529
20.0
46200
58.0
16122
96.0
6383
-17.0
149355
21.0
44855
59.0
15710
97.0
6239
-16.0
144374
22.0
43554
60.0
15310
98.0
6098
-15.0
139576
23.0
42295
61.0
14921
99.0
5961
-14.0
134956
24.0
41077
62.0
14544
100.0
5827
-13.0
130506
25.0
39898
63.0
14177
101.0
5697
-12.0
126219
26.0
38757
64.0
13820
102.0
5570
-11.0
122089
27.0
37652
65.0
13474
103.0
5446
-10.0
118108
28.0
36583
66.0
13137
104.0
5326
-9.0
114272
29.0
35548
67.0
12810
105.0
5208
-8.0
110575
30.0
34545
68.0
12492
106.0
5094
-7.0
107010
31.0
33574
69.0
12183
107.0
4982
-6.0
103574
32.0
32634
70.0
11883
108.0
4873
-5.0
100260
33.0
31723
71.0
11591
109.0
4767
-4.0
97064
34.0
30840
72.0
11307
110.0
4663
-3.0
93981
35.0
29986
73.0
11031
111.0
4562
-2.0
91008
36.0
29157
74.0
10762
112.0
4464
-1.0
88139
37.0
28355
75.0
10501
113.0
4367
0.0
85371
38.0
27577
76.0
10247
114.0
4274
1.0
82699
39.0
26823
77.0
10000
115.0
4182
2.0
80121
40.0
26092
78.0
9760
116.0
4093
3.0
77632
41.0
25383
79.0
9526
117.0
4006
4.0
75230
42.0
24696
80.0
9299
118.0
3921
5.0
72910
43.0
24030
81.0
9077
119.0
3838
6.0
70670
44.0
23384
82.0
8862
120.0
3757
7.0
68507
45.0
22758
83.0
8653
121.0
3678
8.0
66418
46.0
22150
84.0
8449
122.0
3601
9.0
64399
47.0
21561
85.0
8250
123.0
3526
10.0
62449
48.0
20989
86.0
8057
124.0
3452
11.0
60565
49.0
20435
87.0
7869
12.0
58745
50.0
19896
88.0
7686
Manual2100-660
Page
25 of 32
FAN BLADE SETTING DIMENSIONS
REMOVAL OF FAN SHROUD
The correct fan blade setting for proper air delivery
across the outdoor coil is shown in Figure 11. Refer to
Table 6 for unit specific dimension.
1. Disconnect all power to the unit.
Any service work requiring removal or adjustment in the
fan and/or motor area will require that the dimensions
below be checked and blade adjusted in or out on the
motor shaft accordingly.
2. Remove the screws holding both grilles, one on
each side of unit, and remove grilles.
3. Remove nine screws holding fan shroud to
condenser and bottom.
4. Unwire condenser fan motor.
5. Slide complete motor, fan blade and shroud
assembly out the left side of the unit.
FIGURE 11
Fan Blade Setting
6. Service motor/fan as needed.
7. Reverse steps to reinstall.
R-410A REFRIGERANT CHARGE
This unit was charged at the factory with the quantity
of refrigerant listed on the serial plate. AHRI capacity
and efficiency ratings were determined by testing with
this refrigerant charge quantity.
AIRFLOW
"A"
MIS-1724
TABLE 6
Fan Blade Dimension
Model
Dimension
A
J18HA
J24HA
1.00"
J30HA
J36HA
1.25"
J42HA
J48HA
J60HA
1.75"
Manual2100-660
Page
26 of 32
The following pressure tables show nominal
pressures for the units. Since many installation
specific situations can affect the pressure readings,
this information should only be used by certified
technicians as a guide for evaluating proper system
performance. They shall not be used to adjust charge.
If charge is in doubt, reclaim, evacuate and recharge
the unit to the serial plate charge.
TABLE 7A – Cooling Pressure
Air Temperature Entering Outdoor Coil °F
Model
Return Air Temp
(DB/WB)
75/62
J18HA
80/67
85/72
75/62
J24HA
80/67
85/72
75/62
J30HA
80/67
85/72
75/62
J36HA
80/67
85/72
75/62
J42HA
80/67
85/72
75/62
J48HA
80/67
85/72
75/62
J60HA
80/67
85/72
Pressure
75
80
85
90
95
100
105
110
115
120
125
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
125
278
134
285
139
295
126
324
135
332
140
344
120
309
128
317
132
328
129
329
138
337
143
349
131
319
140
327
145
338
126
331
135
339
140
351
121
324
129
332
134
344
127
298
136
306
141
317
128
344
137
353
142
365
122
331
131
339
136
351
131
351
140
360
145
373
133
339
142
348
147
360
129
353
138
362
143
375
123
347
132
356
137
368
130
321
139
329
144
341
130
367
139
376
144
389
125
352
134
361
139
374
133
373
142
383
147
396
135
361
144
370
149
383
131
377
140
387
145
401
126
371
135
381
140
394
132
343
141
352
146
364
132
390
141
400
146
414
128
375
137
385
142
398
135
397
144
407
149
421
137
384
146
394
151
408
133
402
142
412
147
426
128
396
137
406
142
420
134
367
143
376
148
389
134
414
143
425
148
440
131
401
140
411
145
425
137
422
146
433
151
448
137
409
147
419
152
434
136
427
145
438
150
453
130
422
139
433
144
448
137
391
146
401
151
415
136
440
145
451
150
467
133
426
142
437
147
452
138
449
148
460
153
476
139
434
149
445
154
461
137
453
147
465
152
481
132
449
141
460
146
476
138
415
148
426
153
441
137
467
147
479
152
496
136
453
145
465
150
481
140
476
150
488
155
505
141
460
151
472
156
489
139
481
149
493
154
510
134
476
143
488
148
505
140
441
150
452
155
468
139
495
149
508
154
526
138
482
148
494
153
511
142
504
152
517
157
535
143
488
153
500
158
518
141
509
151
522
156
540
136
504
145
517
150
535
143
467
153
479
158
496
141
526
151
539
156
558
140
511
150
524
155
542
144
533
154
547
159
566
145
517
155
530
160
549
143
538
153
552
158
571
137
532
147
546
152
565
145
494
155
507
160
525
144
557
154
571
159
591
142
541
152
555
157
574
146
564
156
578
161
598
147
547
157
561
162
581
145
568
155
583
160
603
139
563
149
577
154
597
147
523
157
536
162
555
146
589
156
604
161
625
145
573
155
588
160
609
148
596
158
611
164
632
149
579
159
594
165
615
147
599
157
614
162
635
141
593
151
608
156
629
Low side pressure ± 4 PSIG; High side pressure ± 10 PSIG
Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge
should be removed and system evacuated and recharged to serial plate charge weight.
NOTE:
Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated check condenser fan wiring. See
“Condenser Fan Operation”.
TABLE 7B – Heating Pressure
Air Temperature Entering Outdoor Coil °F
Model
Return Air Temp
J18HA
70
J24HA
70
J30HA
70
J36HA
70
J42H
70
J48H
70
J60H
70
Pressure
0
5
10
15
20
25
30
35
40
45
50
55
60
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
50
267
25
261
50
349
34
428
66
326
29
293
63
529
55
270
35
270
51
328
41
374
60
313
35
292
59
462
60
274
44
279
54
313
48
330
57
303
41
294
56
408
65
278
53
288
57
302
55
298
55
298
48
297
56
368
71
284
61
297
61
297
62
276
56
296
55
302
57
342
78
290
69
306
67
297
69
264
60
298
62
309
61
328
85
297
76
315
73
302
76
263
65
305
69
317
66
328
92
305
83
324
81
313
83
273
73
315
77
328
73
341
100
314
90
333
90
328
90
294
84
329
86
340
82
368
108
324
96
342
99
349
98
325
96
348
94
354
93
408
116
335
101
352
110
376
105
366
111
370
103
369
106
461
125
346
107
361
122
407
112
419
128
396
113
387
122
528
135
359
111
370
135
444
120
482
148
426
123
406
139
608
Manual2100-660
Page
27 of 32
TABLE 8
Electrical Specifications
Single Circuit
Dual Circuit
n
n
k Maximum
j Minimum
n
k
Rated Volts
Ground
Field Power
External Fuse or
Circuit
Field
Maximum
n
MODEL
& Phase
Wire Size
Wire Size
Ckt. Breaker
Ampacity
Power
External
Ground
Wire
Fuse or
Wire
Ckt. A Ckt. B Ckt. A
Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B
Size
Ckt. Brkr.
12
12
20
16
J18HA-A00, A0Z
1
10
8
40
37
A04 230/208-1
1
10
6
60
57
A08
1
10
10
25
21
J24HA-A00, A0Z
1
10
8
45
42
A04 230/208-1
1
8
42
25
45
25
8
10
10
10
6
70
63
A08
1 or 2
J24HA-B00, B0Z
1
15
20
12
12
230/208-3
B06
1
33
35
8
10
J24HA-C00, C0Z
1
9
15
14
14
460-3
C06
1
18
20
12
12
10
8
35
24
J30HA-A00, A0Z*
1
10
8
50
50
A05* 230/208-1
1
8
50
26
50
30
8
10
10
10
4
80
76
A10*
1 or 2
10
10
25
18
J30HA-B00, B0Z*
1
10
8
40
36
B06 230/208-3
1
10
8
50
45
B09*
1
J30HA-C00, C0Z*
1
10
15
14
14
C06
1
19
20
12
12
460-3
C09*
1
24
25
10
10
 C15
1
25
30
10
10
J36HA-A00, A0Z*
1
29
40
8
10
A05
1
55
60
6
10
230/208-1
A10*
1 or 2
81
90
4
8
55
26
60
30
6
10
10
10
A15
1 or 2
85
90
4
8
55
52
60
60
6
6
10
10
J36HA-B00, B0Z*
1
23
30
10
10
B06
1
41
45
8
10
230/208-3
B09*
1
50
50
8
10
l B15
1
52
60
6
10
J36HA-C00, C0Z*
1
11
15
14
14
C06
1
20
25
10
10
460-3
C09*
1
24
25
10
10
 C15
1
25
30
10
10
10
8
45
30
1
J42HA-A00, A0Z
10
6
60
51
1
A04
10
6
60
56
1
A05 230/208-1
8
30
52
45
60
8
6
10
10
4
90
82
1 or 2
A10
8
32
52
45
60
8
6
10
10
4
90
82
1 or 2
m A15
J42HA-B00, B0Z
1
24
35
8
10
B06
1
42
50
8
10
230/208-3
B09
1
52
60
6
10
l B15
1
52
60
6
10
J42HA-C00, C0Z
1
12
15
14
14
C06
1
21
25
10
10
460-3
C09
1
25
30
10
10
l C15
1
26
30
10
10
J48HA-A00, A0Z
1
35
50
8
10
A04
1
56
60
6
10
A05
1 or 2
61
70
6
8
35
26
50
30
8
10
10
10
230/208-1
A10
1 or 2
87
90
3
8
35
52
50
60
8
6
10
10
m A15
1 or 2
87
90
3
8
35
52
50
60
8
6
10
10
m A20
1 or 2
110
125
2
6
58
52
60
60
6
6
10
10
10
8
35
25
1
J48HA-B00, B0Z
10
8
50
43
1
B06
10
6
60
52
1
B09 230/208-3
10
6
60
52
1
l B15
-33
28
40
30
8
10
10
10
---2
l B18
14
14
15
12
J48HA-C00, C0Z
1
10
10
30
26
C09
460-3
1
10
10
30
26
l C15
1
10
8
60
47
1
J60HA-A00, A0Z
8
4
90
73
1 or 2
A05
47
26
60
30
8
10
10
10
6
3
110
99
A10 230/208-1 1 or 2
47
52
60
60
8
6
10
10
6
3
110
99
1 or 2
m A15
47
52
60
60
8
6
10
10
6
2
125
112
1 or 2
m A20
60
52
60
60
6
6
10
10
J60HA-B00, B0Z
1
32
40
8
10
B09
1
59
60
6
10
230/208-3
l B15
1
59
60
6
10
l B18
2
----35
28
40
30
8
10
10
10
12
12
20
16
J60HA-C00, C0Z
1
10
8
35
29
C09
460-3
1
10
8
35
29
l C15
1
 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electrical code (latest version), Article 310 for power conductor sizing. CAUTION: When more than one field power circuit is run through one conduit, the conductors must be derated. Pay special attention to note 8 of Table 310 regarding Ampacity Adjustment Factors when more than three (3) current carrying conductors are in a raceway.
 Maximum size of the time delay fuse or circuit breaker for protection of field wiring conductors.
 Maximum KW that can operate with the heat pump on is 9KW. Full heat available during emergency heat mode.
m Maximum KW that can operate with the heat pump on is 10KW. Full heat available during emergency heat mode.
n Based on 75°copper wire. All wiring must conform to the National Electrical Code and all local codes.
No.
Field
Power
Circuits
j
Minimum
Circuit
Ampacity
* Available factory-built only with top outlet supply as an option.
IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires in accordance with the
National Electrical Code and all local codes.
Manual2100-660
Page
28 of 32
TABLE 9
Recommended Airflow
Recommended
Airflow Range
Rated ESP *
Factory Speed
Connection
Model
Rated CFM *
J18H
600 
.20
575 - 725
Low
J24H
800
.20
700 - 925
Single
J30H
1000
.40
930 - 1300
High
J36H
1100
.30
930 - 1350
High
J42H
1400
.40
1250 - 1700
High
J48H
1550
.20
1275 - 1700
High
J60H
1700
.20
1500 - 1950
Medium
* Rated CFM and ESP on high speed tap.
Rated CFM and ESP on low speed tap.
TABLE 10
Indoor Blower Performance
J18HA
Speed
High
E.S.P.
Dry
(Inch
Coil
H2O)
.0
.1
.2
.3
.4
.5
980
920
850
785
715
610
J24HA
Low
Single
J30HA, J36HA
High
J42HA, J48HA
Low
High
J60HA
Low
High
Medium
Low
Wet
Coil
Dry
Coil
Wet
Coil
Dry
Coil
Wet
Coil
Dry
Coil
Wet
Coil
Dry
Coil
Wet
Coil
Dry
Coil
Wet
Coil
Dry
Coil
Wet
Coil
Dry
Coil
Wet
Coil
Dry
Coil
Wet
Coil
Dry
Coil
Wet
Coil
970
905
825
755
680
565
725
670
630
580
530
455
720
655
610
550
490
390
960
920
860
790
700
565
920
860
790
705
610
450
1435
1400
1300
1230
1125
1010
1400
1335
1250
1160
1075
940
960
935
925
895
840
765
960
945
905
880
810
735
1840
1755
1665
1570
1465
1355
1790
1700
1615
1515
1410
1280
1655
1565
1490
1410
1320
1215
1605
1530
1455
1370
1280
980
2095
2040
1985
1925
1875
1820
1995
1950
1900
1850
1800
1745
1910
1850
1790
1735
1675
1615
1820
1760
1700
1630
1570
1500
1795
1730
1665
1605
1545
1475
1715
1655
1600
1540
1475
1310
Manual2100-660
Page
29 of 32
TABLE 11
Maximum ESP of Operation
Electric Heat Only
Model
Front Outlet
ESP
J18H
J24H
A00
A04
A08
.50
.40
.35
J24H
B00
B06
.50
.40
J24H
C00
C06
.50
.40
Model
J42H
Low
Speed
High
Speed
J30H
J36H
A00
A05
A10
A15
.50
.40
.35
.35
.50
.50
.40
.40
J30H
J36H
B00
B06
B09
B15
.50
.40
.30
.30
.50
.50
.35
.35
J30H
J36H
C00
C06
C09
C15
.50
.40
.30
.30
.50
.50
.40
.40
J48H
J60H
Model
Speed KW
High Speed
Low Speed
High Speed
Low Speed
High Speed
Low Speed
-A00
-A04
-A05
-A10
-A15
-A20
.50
----.50
.50
.50
-----
.50
----.50
.45
.45
-----
.50
.50
.50
.50
.50
.50
.50
.50
.50
.45
.45
.45
.50
----.50
.50
.50
.50
.40
----.25
.25
.25
.25
-B00
-B09
-B15
-B18
.50
.50
.50
-----
.50
.45
.45
-----
.50
.50
.50
.50
.50
.45
.45
.45
.50
.50
.50
.50
.40
.30
.30
.30
-C00
-C09
-C15
.50
.50
.50
.50
.40
.40
.50
.50
.50
.50
.40
.40
.50
.50
.50
.40
.35
.35
TABLE 12
Electric Heat
Models
240V-1
208V-1
KW
Amps
BTUH
Amps
BTUH
4
16.7
13650
14.4
10240
5
20.8
17065
18.1
12800
33.3
27300
28.8
20475
10
41.6
34130
36.2
25600
15
62.5
51250
54.0
38400
6
8
9
18
20
Manual2100-660
Page
30 of 32
83.2
68260
72.1
51200
240V-3
208V-3
460V-3
Amps
BTUH
Amps
BTUH
Amps
BTUH
14.4
20500
12.5
15360
7.2
20500
21.7
30600
18.7
23030
10.8
30700
18.0
51200
36.2
51200
31.2
38400
43.3
61430
37.5
46100
EHW18H-A04
X
EHW18H-A08
X
EHW2TH-A04
X
EHW2TH-A08
X
EHWH24-B06B
X
EHW30H-A10
X
EHWH36-A05
X
EHW3TH-A10
X
EHW3TH-A15
X
X
EHW36H-B06
X
EHWH03-B09
X
X
EHW3TH-B15
X
EHW3TH-C06
X
X
EHW3TA-C09
X
X
EHW3TH-C15
X
X
EHW4TH-A05
X
EHWH42-A05B
X
EHW4TH-A10
X
EHW4TH-A15
X
EHWH42-A15B
X
X
X
EHWH04-A20B
X
X
EHWH05-B06B
X
X
EHWH05-B09B
X
X
X
EHWH05-B15B
X
X
X
EHW4TH-C06
X
EHW4TH-C09
X
X
EHW4TH-C15
X
X
EHWH04-A15B
EHW5TH-A10
X
X
X
X
X
X
X
WMCB-03B
X
WMCB-06A
X
X
X
WMCB-05B
X
WMCB-07B
X
WMCB-08A
X
WMCB-09A
WMPD-01C
X
X
WMCB-02B
WMCB-03A
X
X
EHW4TH-B18
WMCB-02A
J60HA-C
J60HA-B
X
EHWH30-A05
EHWH03-B06
CIRCUIT BREAKER (WMCB) &
PULL DISCONNECT (WMPD)
J60HA-A
J48HA-C
J48HA-B
J48HA-A
J42HA-C
J42HA-B
J42HA-A
J36HA-C
X
EHWH24B-C06
HEATER KITS
J36HA-B
J36HA-A
J30HA-C
J30HA-B
J30HA-A
J24HA-C
J24HA-B
J24HA-A
Part Number
J18HA-A
TABLE 13
Optional Accessories
X
X
X
X
X
X
X
Manual2100-660
Page
31 of 32
Part Number
Description
J18, J24
J30, J36
J42, J48, J60
TABLE 14
Vent and Control Options
CMH-27
Low Ambient Control – Heat Pump (LAC)
X
X
CMH-28
Outdoor Thermostat – Heat Pump (ODT)
X
X
CMH-29
LAC and ODT – Heat Pump
X
X
CMH-30
LAC and Start Kit (1-PH only) 
X
X
CMH-31
LAC, ODT and Start Kit (1-PH only) 
X
X
CMH-22
Low Ambient Control – Heat Pump
X
CMH-23
Outdoor Thermostat – Heat Pump (ODT)
X
CMH-24
LAC and ODT – Heat Pump
X
CMH-25
LAC and Start Kit (1-PH only) 
X
CMH-26
LAC, ODT and Start Kit (1-PH only) 
CMC-15
Start Relay (PTCR based) 
X
X
X
X
X
X
SK-111
Start Kit (Hard Start) 
X
BFAD-2
Barometric Fresh Air Damper – Standard
X
BOP-2
Blank-Off Plate
X
WMFADP2
Motorized Fresh Air Damper
X
WCRVPS2
Commercial Ventilator – Spring Return
X
WECOPE2
WECOPT2
Economizer – Bldg. Equipment, Enthalpy
Economizer – Bldg. Equipment, DB Temp.
X
X
WERVPA2
Energy Recovery Ventilator – 230 Volt
X
WERVPC2
Energy Recovery Ventilator – 460 Volt
X
BFAD-3
Barometric Fresh Air Damper – Standard
X
BOP-3
Blank-Off Plate
X
WMFADP3
Motorized Fresh Air Damper
X
WCRVPS3
Commercial Ventilator – Spring Return
X
WECOPE3
WECOPT3
Economizer – Bldg. Equipment, Enthalpy
Economizer – Bldg. Equipment, DB Temp.
X
X
WERVPA3
Energy Recovery Ventilator – 230 Volt
X
WERVPC3
Energy Recovery Ventilator – 460 Volt
X
BFAD-5
Barometric Fresh Air Damper – Standard
X
BOP-5
Blank-Off Plate
X
WMFADP5
Motorized Fresh Air Damper
X
WCRVPS5
Commercial Ventilator – Spring Return
X
WECOPE5
WECOPT5
Economizer – Bldg. Equipment, Enthalpy
Economizer – Bldg. Equipment, DB Temp.
X
X
WERVPA5
Energy Recovery Ventilator – 230 Volt
X
WERVPC5
Energy Recovery Ventilator – 460 Volt
X


PTCR Start Kit can be used with all -A single phase models. Increases starting torque 2-3x. Not used
for -B or -C three phase models. Do not use if SK111 is used.
Start capacitor and potential relay start kit can be used with all -A single phase models. Increases
starting torque 9x. Not used for -B or -C three phase models. Do not use if CMC-15 is used.
Manual2100-660
Page
32 of 32
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