Bard J18H2-A User manual

Page 1 of 30
WALL MOUNTED
PACKAGED HEAT PUMP
&
LOW VOLTAGE
CONTROL CIRCUIT WIRING
Models:
INSTALLATION INSTRUCTIONS
Manual: 2100-606B
Supersedes: 2100-606A
Date: 11-18-16
J18H2-A
J24H2-A J24H2-B J24H2-C
J30H2-A J30H2-B J30H2-C
J36H2-A J36H2-B J36H2-C
J42H2-A J42H2-B J42H2-C
J48H2-A J48H2-B J48H2-C
J60H2-A J60H2-B J60H2-C

Manual 2100-606B
Page 2 of 30
Figures
Figure 1 Fresh Air Damper Assembly.................... 5
Figure 2 Unit Dimensions ................................... 7
Figure 3A Mounting Instructions - J18 & J24 ......... 8
Figure 3B Mounting Instructions - J30 & J36 ........ 9
Figure 3C Mounting Instructions - J42, J48, J60 .. 10
Figure 4 Electric Heat Clearance ....................... 11
Figure 5 Wall Mounting Instructions .................. 12
Figure 6 Wall Mounting Instructions .................. 12
Figure 7 Common Wall Mounting Installations .... 13
Figure 8 Defrost Control Board .......................... 21
Figure 9 Fan Blade Setting ............................... 24
Diagrams
Diagram 1 HP w/Opt. Elec. Heat No Econ. ............ 16
Diagram 2 HP w/ECONWMT Economizer ............... 17
Tables
Table 1 Diagram to Use w/Unit & Vents............. 15
Table 2 Operating Voltage Range...................... 15
Table 3 Thermostat Wire Size........................... 15
Table 4 Troubleshooting .................................. 22
Table 5 Fan Blade Dimension .......................... 24
Table 6 Refrigerant Charge .............................. 24
Table 7 Cooling Pressure ................................. 25
Table 8 Heating Pressure................................. 25
Table 9 Electrical Specifications J**H .............. 26
Table 10 Recommended Airflow ......................... 27
Table 11 Indoor Blower Performance .................. 27
Tables 12 Maximum ESP Electric Heat Only........ 28
Table 13 Electric Heat ...................................... 28
Table 14 Optional Accessories ........................... 29
Table 15 Vent & Control Options ........................ 30
Getting Other Information and Publications .... 3
Wall Mount General Information ......................... 4
Wall Mount Model Nomenclature ........................... 4
Shipping Damage ................................................. 4
General ............................................................... 4
Duct Work ........................................................... 5
Filters ................................................................. 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
Start Up ................................................................... 18
General ............................................................. 18
Topping Off System Charge ................................. 18
Safety Practices ................................................. 18
Important Installer Note...................................... 19
High & Low Pressure Switch................................ 19
Three Phase Scroll Compressor............................ 19
Phase Monitor.................................................... 19
Condenser Fan Operation .................................... 19
Service Hints ..................................................... 19
Sequence of Operation........................................ 20
Pressure Service Ports ........................................ 20
Defrost Cycle ..................................................... 20
Troubleshooting .................................................... 22
Solid State Heat Pump Control ............................ 22
Checking Temperature Sensor.............................. 23
Fan Blade Setting Dimensions ............................. 24
Removal of Fan Shroud....................................... 24
Refrigerant Charge.............................................. 24
CONTENTS

Manual 2100-606B
Page 3 of 30
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 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: [phone]
Fax: [phone]
ANSI American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: [phone]
Fax: [phone]
ASHRAE American Society of Heating, Refrigeration
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: [phone]
Fax: [phone]
NFPA National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: [phone]
Fax: [phone]
GETTING OTHER INFORMATION AND PUBLICATIONS

Manual 2100-606B
Page 4 of 30
KW
WALL MOUNT GENERAL INFORMATION
HEAT PUMP WALL MOUNT MODEL NOMENCLATURE
J 42 H 2 – A 10 X X X X X E
NOTE: Vent option X is without exhaust capability. May require separate field-supplied barometric relief in building.
See Table 15 on page 30 for field installment options.
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
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.
MODEL NUMBER CONTROL MODULES
See Spec. Sheet S3441
VOLTS & PHASE
A - 230/208/60/1
B - 230/208/60/3
C - 460/60/3
REVISIONS
VENTILATION OPTIONS
X - Barometric Fresh Air Damper (Standard)
S - Economizer Standard Version, Enthalpy
W - Economizer Equipment Building, Enthalpy
T - Economizer Equipment Building, DB Temp.
FILTER OPTIONS
P - 2" Pleated
COLOR OPTIONS
X - Beige
COIL OPTIONS
X - Standard
OUTLET OPTIONS
X - Front (Standard)
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

Manual 2100-606B
Page 5 of 30
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
tables found on page 28.
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 model series 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 the INSTALLATION section (beginning
on page 6) and Figures 3 and 4 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 Return Air Grille Kit
RG2 through RG5 or RFG2 through RFG5 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.
FILTERS
A 1" throwaway 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. A 1" washable filter and 2" pleated
filter are also available as optional accessories. The
internal filter brackets are adjustable to accommodate
the 2" filter by bending two (2) tabs down on each side
of the filter support bracket.
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

Manual 2100-606B
Page 6 of 30
See J**H Specification S3441.
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"
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
INSTALLATION
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.
WALL MOUNTING INFORMATION
1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figures
3A - 3C on pages 8-10.
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 ensure that they are capable of carrying the
weight of the installed unit.
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-C on pages 8-10 for details on opening sizes.
3. Locate and mark lag bolt locations and bottom
mounting bracket location (see Figures 3A-C).
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 5/16" lag
bolts; use 7/8" diameter flat washers on the lag
bolts.
7. Secure rain flashing to wall and caulk across entire
length of top (see Figure 3A-C).
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.

Manual 2100-606B
Page 7 of 30
3"
11"
7.88
1.00 31.88
Heat
models.
Electric
Hood for
ECONWMT
MIS-2487 G
11
1
Condenser
Filter Access Panel
Front View
Air Outlet
Standard
flush vent
door for
non-ERV/
Econ.
models
Ventilation Air
5.88
F
W
GLow Voltage
Electrical
Entrance
High Voltage
Side View
Drain
Electrical
Cond.
Air
Inlet
Heater
Access
Panel
4° Pitch
Built In
Rain Hood
Disconnect
Access Panel
(Lockable)
Entrance
C. Breaker/
Hood for ERV and
ECONWMS models
only
C
I
D
J
H
A
2.13
K
Mounting
Supply Air Opening
Side Wall
Brackets
Location
Shipping
Return Air Opening
(Built In)
Optional
Electrical
Entrances
Top Rain
Flashing
Bottom Installation
Bracket
Back View
P
M
O
E
R
S
S
S
S
S
T
.44
N
Q
B
L
* Optional top outlet (factory installed only) for J30H and J36H models only.
J**H
RIGHT
UNIT
SIDE VIEW BACK VIEW
FRONT VIEW
All dimensions are in inches. Dimensional drawings are not to scale.
Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal)
MODEL WIDTH
(W)
DEPTH
(D)
HEIGHT
(H)
SUPPLY RETURN
A B C B E F G I J K L M N O P Q R S T
J18H2
J24H2 33.300 17.125 70.563 7.88 19.88 11.88 19.88 35.00 18.50 25.75 20.56 26.75 28.06 29.25 27.00 2.63 34.13 22.06 10.55 5.00 12.00 5.00
J30H2
J36H2 38.200 17.125 70.563 7.88 27.88 13.88 27.88 40.00 18.50 25.75 17.93 26.75 28.75 29.25 27.00 2.63 39.13 22.75 9.14 5.00 12.00 5.00
J42H2
J48H2 42.075 22.432 84.875 9.88 29.88 15.88 29.88 43.88 19.10 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
J60H2 42.075 22.432 94.875 9.88 29.88 15.88 29.88 43.88 13.56 41.66 30.00 42.68 36.94 44.69 42.43 3.37 43.00 33.88 10.00 1.44 16.00 1.88
FIGURE 2

Manual 2100-606B
Page 8 of 30
FIGURE 3A
J18H, J24H
Mounting Instructions
12" 12" 12" 12" 12"
20" 20"
1"
3"
4"
Typ.
8"
20
1 2
"
12"
1"
3
1 8
"
4"
Typ.
5"
7 8
"
3
13 16
"
2" 2"
7
1
16
"
1
16
"7
CONTROLS AND HEATER ACCESS
NOTES:
TOP
TOP FLASHING AT TIME OF INSTALLATION.
OPENING
MIS-3157
ENTIRE LENGTH OF TOP.
RETURN AIR
DUCT
Wall Opening and Hole Location View Right Side View
OF CAULKING ALONG
PANEL
FOAM AIR SEAL
WALL STRUCTURE
WALL
HEATER ACCESS
RAIN FLASHING
SILICONE CAULKING BE PLACED BEHIND IS ON OPPOSITE (LEFT) SIDE.
THE SIDE MOUNTING FLANGES AND UNDER
SEAL WITH BEAD
IT IS RECOMMENDED THAT A BEAD OF
W**A UNIT SHOWN, W**LUNIT
SUPPLY AIR
SUPPLIED
Return Opening
Supply Opening

Manual 2100-606B
Page 9 of 30
FIGURE 3B
J30H, J36H
Mounting Instructions
28"
A
C
D
C
12" 12" 12" 12" 12"
5 1
16 "
B E
14"
4 11
16 "4 11
16 "
4"
Typ.
2 7
8"
7 8"7
8"
4"
Typ.
7 8"
3 1
8"
W*RUNIT SHOWN, W*LUNIT
MIS-3158
ENTIRE LENGTH OF TOP.
SUPPLIED
SUPPLY AIR
TOP
OF CAULKING ALONG
PANEL
FOAM AIR SEAL
WALL STRUCTURE
RAIN FLASHING
FOUR SIDES OF SUPPLY AIR DUCT IS REQUIRED FROM COMBUSTABLE MATERIALS
NOTES:
1/4" CLEARANCE ON ALL
HEATER ACCESS
TOP FLASHING AT TIME OF INSTALLATION.
THE SIDE MOUNTING FLANGES AND UNDER
SILICONE CAULKING BE PLACED BEHIND IS ON OPPOSITE (LEFT) SIDE.
OPENING
CONTROLS AND HEATER ACCESS
DUCT
RETURN AIR
Right Side View
SEAL WITH BEAD
IT IS RECOMMENDED THAT A BEAD OF
WALL
Wall Opening and Hole Location View
Return Opening
16 7/84 7/164 5/89 7/829 7/8
17 5/8311/165 3/88 3/8
28 3/8
EDCBA
COMBUSTIBLE MATERIALS
RECOMMENDED 1" CLEARANCE FROM
REQUIRED DIMENSIONS TO MAINTAIN
COMBUSTIBLE MATERIALS
1/4" MIN. CLEARANCE FROM
REQUIRED DIMENSIONS TO MAINTAIN
Supply Opening

Manual 2100-606B
Page 10 of 30
FIGURE 3C
J42H, J48H, J60H
Mounting Instructions
D
16" 16" 16" 16" 16"
17
8"
61
2" 6 1
2"
21
8"
7 8"
1"
3"
4"
Typ.
4"
Typ.
61
2"30"
E
16"
A CC
31
8"
B
Wall Opening and Hole Location View
RETURN AIR
1
REQUIRED DIMENSIONS TO MAINTAIN
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
REQUIRED DIMENSIONS TO MAINTAIN 29
DUCT
COMBUSTIBLE MATERIALS
A B C DE
30 1/2 10 1/2 6 1/4 1 1/4 29 3/4
32 12 5 1/2 2
NOTES:
WALL STRUCTURE
1
SUPPLY AIR
IT IS RECOMMENDED THAT A BEADOF
OPENING
Right Side View
RAIN FLASHING
SILICONE CAULKING BE PLACED BEHIND
RECOMMENDED 1" CLEARANCE FROM
THE SIDE MOUNTING FLANGES AND UNDER
TOP FLASHING AT TIME OFINSTALLATION.
TOP.
PANEL
HEATER ACCESS
FOUR SIDES OFSUPPLY
AIRDUCTIS REQUIRED
FROM COMBUSTABLE
WALL
1/4" CLEARANCE ONALL MATERIALS
Supply Opening
FOAMAIRSEAL
SUPPLIED
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
TOP
1
Return Opening
MIS-416 E
Dimension is 21" on 95" tall units.
2
Dimension is 10" on T48H1 & T60H1.
2
Dimension is 6" on T48H1 & T60H1.
3
3

Manual 2100-606B
Page 11 of 30
FIGURE 4
Electric Heat Clearance
J30H, J36H, J42H, J48H, J60H
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.
SIDE SECTION VIEW OF SUPPLY AIR DUCT
FOR WALL MOUNTED UNIT SHOWING 1/4 INCH
CLEARANCE TO COMBUSTIBLE SURFACES.

Manual 2100-606B
Page 12 of 30
DUCT
OPENING
RETURN AIR
SUPPLY AIR
WOOD FRAME WALL INSTALLATION
OPENING
WALL BEFORE
MOUNT ON UNIT
OPENING
BEFORE INSTALLATION
BOTTOM MOUNTING
CONCRETE BLOCK WALL INSTALLATION
BRACKET. MOUNT ON
OPENING
WOOD OR STEELSIDING
OPENING
INSTALLING UNIT.
RETURN AIR
WALL STRUCTURE
RETURN AIR
SUPPLY AIR
FACTORY SUPPLIED
RAIN FLASHING.
SUPPLY AIR
MIS-548 A
SIDE VIEW
I
A
C
K
E + 1.000
B
1.000
SUPPLY DUCT
OVER FRAME
INTERIOR FINISHED WALL
ALL AROUND DUCT
FRAMING MATERIAL
EXTERIOR FINISH WALL
OPENING
FOR ACTUAL DIMENSIONS.
2 x 4'S, 2 x 6'S &/OR
STRUCTURAL STEEL
ATTACH TO TOP
1.000" CLEARANCE
1.000" CLEARANCE
PLATE OF WALL
C
SEE UNIT DIMENSIONS, FIGURE 2,
OPENING
RETURN DUCT
2 x 6
ATTACH TO BOTTOM
OVER FRAME
PLATE OF WALL
L
THIS STRUCTURAL MEMBER
LOCATED TO MATCH STUD
SPACING FOR REST OF WALL.
A SECOND MEMBER MAY BE
REQUIRED FOR SOME WALLS.
MIS-549 B
ALL AROUND DUCT
FIGURE 5
Wall Mounting Instructions
FIGURE 6
Wall Mounting Instructions
SEE FIGURE 3 – MOUNTING INSTRUCTIONS
SEE UNIT DIMENSIONS, FIGURE 2,
FOR ACTUAL DIMENSIONS
IF REQUIRED
IF REQUIRED

Manual 2100-606B
Page 13 of 30
LOWERED
RAISED FLOOR
RAFTERS
SUPPLY AIR
CEILING SURFACE
WALL SLEEVE
RETURN AIR
CLOSET WALL
GRILLE
FLASHING
RETURN AIR
FLASHING
SUPPLY DUCT MAYBE LOCATED INANATTIC
OR BELOW CEILING RAFTERS AS SHOWN
SUPPLY DUCT MAY BE LOCATED INANATTIC
SURFACE
RAFTERS
FINISHED CEILING
SUPPLY AIRDUCT
WALL
OPENING W/ GRILLE
SUPPLY DUCT MAYBE LOCATED INANATTIC
OR BELOW CEILING RAFTERS AS SHOWN
CEILING
RAIN
RETURN AIR
SLEEVE
WALL
SUPPLY AIRDUCT
RAFTERS
RAFTERS
RETURN AIR
OPENING W/ GRILLE
RAIN
FALSE WALL INSTALLATION
DUCTED SUPPLY
GRILLE
OUTSIDE
SPACE
FALSE WALL
RETURN AIR GRILLE
OUTSIDE
OR BELOW CEILING RAFTERS AS SHOWN
FINISHED CEILING SURFACE
RAIN
FLASHING
RAIN
FLASHING
RETURN AT UNITNO DUCT
WALL
SUPPLY AIRDUCT
CLOSETINSTALLATION
RETURN AIR
FINISHED
FINISHED CEILING SURFACE
MIS-550 B
FREE AIR FLOW
OUTSIDE
WALL
OUTSIDE
WALL
SUPPLY AIRDUCT
W/ GRILLE
FIGURE 7
Common Wall Mounting Installations

Manual 2100-606B
Page 14 of 30
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Manual 2100-606B
Page 15 of 30
TABLE 3
Thermostat Wire Size
Low Voltage Connections for DDC Control
Fan Only Energize G
Cooling Mode Energize Y, G
Heat Pump Heating Energize Y, G, B
2nd Stage Heating Energize G, W2, Y, B
w/Heat Pump (if employed)
Ventilation Energize G, O1
Emergency Heat Energize B, W2, E, G
Transformer
VA FLA Wire Gauge
Maximum
Distance
in Feet
55 2.3
20 gauge
18 gauge
16 gauge
14 gauge
12 gauge
45
60
100
160
250
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.
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 Time Delay
Relay 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.
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.
See “Start Up” section for important information on
three phase scroll compressor start ups.
See Table 9 for Electrical Specifications.
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).
WIRING – LOW VOLTAGE WIRING
230/208V, 1 phase and 3 phase equipment contain
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 240V and
208V taps are:
TABLE 2
Operating Voltage Range
An 18 gauge copper, color-coded thermostat cable is
recommended. The connection points are shown in
this manual (see Table 2).
Low Voltage Connection
These units use a grounded 24-volt AC low voltage circuit.
The “R” terminal is the hot terminal and the “C”
terminal is grounded.
“G” terminal is the fan input.
“Y” terminal is the compressor input.
“B” terminal is the reversing valve input. The reversing
valve must be energized for heating mode.
“R” terminal is the 24 VAC hot.
“C” terminal is the 24 VAC grounded.
“L” terminal is compressor lockout output. This
terminal is activated on a high or low pressure trip by
the electronic heat pump control. This is a 24 VAC
output.
“W2” terminal is second stage heat (if equipped).
“W3” terminal is spare; use as needed.
“DH” terminal is used if outdoor thermostat installed.
“O1” terminal is the ventilation input. This terminal
energizes any factory installed ventilation option.
“E” terminal is the emergency heat input. This
terminal energizes the emergency heat relay.
TAP RANGE
240V 253 - 216
208V 220 - 187
TABLE 1 Diagram to Use with Unit and Vents
System Type
Vent FAD or No Vent
Vent Code X
Thermostat Programmable
Model Series No Yes
Heat Pump J**H Diagram 1 Diagram 2

Manual 2100-606B
Page 16 of 30
UNIT 24V
E01
LDH
W1BC W2 W3Y1YRG
TERMINAL BLOCK
MIS-2977
COMPRESSOR LOCKOUT OUTPUT
24V COMMON (GROUNDED)
FAN (BLOWER)
24V HOT
COMPRESSOR
REVERSING VALVE
ELECTRIC HEAT STAGE 1
SPARE
EMERGENCY HEAT
USED WITH OUTDOOR THERMOSTAT
VENTILATION INPUT
DIAGRAM 1
Basic Heat Pump with Optional Electric Heat
No Economizer

Manual 2100-606B
Page 17 of 30
TERMINAL BLOCK
MIS-2979
E01
L
CW1BDH W2 W3Y1YRG
UNIT 24V
COOLING STAGE 1
24V COMMON (GROUNDED)
VENTILATION INPUT (USEDIF
FAN (BLOWER)
FOR VENTILATION)
USED WITH OUTDOOR THERMOSTAT
EMERGENCY HEAT
COMPRESSOR LOCKOUT OUTPUT
REVERSING VALVE
ELECTRIC HEAT STAGE 1
MINIMUM POSITION REQUIRED
ORANGE
24V HOT
YELLOW
COOLING STAGE 2
COMPRESSOR
BLACK
BLUE
PINK
PURPLE
BROWN/WHITE
RED
1
1
YELLOW/RED
REMOVE FACTORY INSTALLED JUMPER.
ECONWMT ECONOMIZER
WIRING HARNESS
DIAGRAM 2
BASIC HEAT PUMP WITH OPTIONAL ELECTRIC HEAT
WITH ECONWMECONOMIZER

Manual 2100-606B
Page 18 of 30
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 HFC-
125.
5. R-410A is nearly azeotropic—similar to R-22 and
R-12. Although nearly azeotropic, charge with
liquid refrigerant.
6. R-410A operates at 40-70% higher pressure than
R-22. Systems designed for R-22 cannot withstand
this higher pressure.
7. R-410A has an ozone depletion potential of zero,
but must be reclaimed due to its global warming
potential.
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, Solair
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 charging charts on the inner control panel
cover as a guideline.
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.
SAFETY PRACTICES
1. Never mix R-410A with other refrigerants.
2. Use gloves and safety glasses, Polyol Ester oils can
be irritating to the skin, and liquid refrigerant will
freeze the skin.
3. Never use air and R-410A to leak check—the
mixture may become flammable.
4. Do not inhale R-410A—the vapor attacks
the nervous system, creating dizziness, loss
of coordination and slurred speech. Cardiac
irregularities, unconsciousness and ultimate 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.
WARNING
Failure to conform to these practices could
lead to damage, injury or death.

Manual 2100-606B
Page 19 of 30
IMPORTANT INSTALLER NOTE
For improved start-up performance, wash the indoor
coil with a dish washing detergent.
HIGH AND LOW PRESSURE SWITCH
All J**H wall mounted air conditioner series 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.
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 one hour may have
a negative impact on the bearing due to oil pump out.
NOTE: If compressor is allowed to run in reverse
rotation for several minutes, the compressor’s
internal protector will trip.
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.
PHASE MONITOR
All units with three phase scroll compressors are
equipped with a three phase line monitor to prevent
compressor damage due to phase reversal.
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 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.
2. Check all power fuses or circuit breakers to be sure
they are the correct rating.
3. Periodic cleaning of the outdoor coil to permit full
and unrestricted airflow circulation is essential.

Manual 2100-606B
Page 20 of 30
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, and thus eliminating pressure
equalization noise except during defrost, are to be
used. On “Auto” option a circuit is completed from
R-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 can be found later in the
manual covering all models. It is imperative to match
the correct pressure table to the unit by model number.
See Tables 7 & 8.
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 8.
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 ¼" 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° 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
¼" QC terminal works best) the defrost sensor mounted