Solair 11EER Series User manual

Page 1 of 39
11EER Series
Wall Mount Air Conditioner
Models:
INSTALLATION INSTRUCTIONS
J42AC-A
J42AC-B
J42AC-C
J48AC-A
J48AC-B
J48AC-C
J60AC-A
J60AC-B
J60AC-C
J72AC-A
J72AC-B
J72AC-C
Manual: 2100-723C
Supersedes: 2100-723B
Date: 4-15-21

Manual 2100-723C
Page 2 of 39
CONTENTS
Getting Other Information and Publications .... 3
Wall Mount General Information ......................... 4
Air Conditioner Wall Mount Model Nomenclature..... 4
Shipping Damage ................................................. 4
General ............................................................... 4
Duct Work ........................................................... 5
Filters ................................................................. 5
Filter Removal/Installation................................. 5
Switching Filter Sizes ....................................... 5
Fresh Air Intake ................................................... 7
Installation ............................................................... 8
Basic Installation Design and Application Planning.. 8
Wall Construction ............................................. 8
Outdoor Area Inspection.................................... 8
Condensate Water Drainage ............................... 8
Indoor Ducted and Non-Ducted Applications........... 8
Indoor Supply Airow........................................ 8
Indoor Return Airow........................................ 8
Ducted Applications ......................................... 8
Free Blow Applications...................................... 9
Thermostat or Indoor Temperature Sensor
Placement ....................................................... 9
Unit Installation ................................................... 9
Materials/Tool List ............................................ 9
Wall Preparation............................................. 10
Wall Mount Installation to Wall Surface ............ 10
Wiring – Main Power........................................... 17
High Voltage Connections................................ 17
Wiring – Low Voltage........................................... 18
Low Voltage (24VAC) Connections .................... 18
Unit Shutdown Feature ................................... 18
Balanced ClimateTM Feature............................. 18
Ventilation Features ........................................ 18
Low Ambient Control (LAC) ............................. 18
Outdoor Temperature Switch and Freeze
Protection Thermostat................................. 18
Alarm Relay Feature ....................................... 18
Start Up ................................................................... 22
General ............................................................. 22
Topping Off System Charge ................................. 22
Safety Practices ................................................. 22
Important Installer Note...................................... 22
High Pressure Switch.......................................... 22
Three Phase Scroll Compressor Start Up
Information........................................................ 22
Phase Monitor.................................................... 23
Condenser Fan Operation .................................... 23
Service Hints ..................................................... 23
Sequence of Operation........................................ 23
Balanced ClimateTM Mode................................ 23
Vent Connection Plug.......................................... 24
Compressor Control Module................................. 24
Features ........................................................ 24
Delay-on-Make Timer ...................................... 24
Short Cycle/Delay-on-Break ............................. 25
Low Pressure Detection................................... 25
High Pressure Detection.................................. 25
Test Mode...................................................... 25
Brownout Protection with Adjustment............... 25
Pressure Service Ports ........................................ 25
Service ..................................................................... 26
Troubleshooting Nidec SelecTech Series ECM
Motors............................................................... 26
If the Motor is Running ................................... 26
If the Motor is Not Running............................. 26
Model SelecTech Communication Diagnostics ... 27
Fan Blade Setting Dimensions ............................. 28
R-410A Refrigerant Charge ................................. 28
Removal of Fan Shroud....................................... 28
Setting Unit Airow ............................................ 32
Blower Speeds ............................................... 32
Speed Tap 1 – Vent/Blower Only .................. 33
Speed Tap 2 – Balanced Climate ................. 33
Speed Tap 3 – Default LO Cooling &
Heating ............................... 33
Speed Tap 4 – Optional MED Cooling &
Heating ............................... 33
Speed Tap 5 – Optional HI Cooling &
Heating ............................... 33
FIGURES
Figure 1 Front Control Panel Cover ...................... 5
Figure 2 Removing Left Filter.............................. 5
Figure 3 Removing Second Filter......................... 5
Figure 4 Filter Tabs in Down Position ................... 6
Figure 5 Bend FIlter Tabs to Up Position .............. 6
Figure 6 Remove Four Screws ............................. 6
Figure 7 Re-Install Filter Support Brackets into
Upper Slots .......................................... 6
Figure 8 Install Right 1" Filter............................. 6
Figure 9 Install Left 1" Filter............................... 6
Figure 10 Fresh Air Damper .................................. 7
Figure 11 Vent Installation/Removal Clearance
Required ............................................ 11
Figure 12 Unit Dimensions ................................. 12
Figure 13 Mounting Instructions.......................... 13
Figure 14 Electric Heat Clearance ....................... 14
Figure 15 Wall Mounting Instructions .................. 15
Figure 16 Wall Mounting Instructions .................. 15
Figure 17 Common Wall Mounting Installations .... 16
Figure 18 High Voltage Connections .................... 17
Figure 19 Programmable Thermostat
Connections ....................................... 20
Figure 20 Non-Programmable Thermostat
Connections ....................................... 21
Figure 21
8201-164 Compressor Control Module ... 24
Figure 22 Motor Connections .............................. 26
Figure 23 Motor Connections .............................. 27
Figure 24 Fan Blade Setting ............................... 28
Figure 25 Fan Shroud Removal ........................... 28
Figure 26 Speed Taps......................................... 32
Figure 27 Speed Taps......................................... 33

Manual 2100-723C
Page 3 of 39
GETTING OTHER INFORMATION AND PUBLICATIONS
These publications can help when installing the air
conditioner. 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 of Air Conditioning and
Ventilating Systems
.......................................................ANSI/NFPA 90A
Standard for Warm Air Heating and Air Conditioning
Systems
.......................................................ANSI/NFPA 90B
Load Calculation for Winter and Summer Air
Conditioning
....................................... ACCA Manual J Residential
Duct Design for Residential Winter and Summer Air
Conditioning and Equipment Selection
....................................................... ACCA Manual D
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]
TABLES
Table 1 Clearance Required for Service Access
and Adequate Condenser Airow........... 11
Table 2 Minimum Clearances Required to
Combustible Materials ......................... 11
Table 3 Wall Thermostats ................................ 19
Table 4 Humidity Controls ............................... 19
Table 5 CO2Controllers ................................... 19
Table 6 Thermostat Wire Size........................... 19
Table 7 Fan Blade Dimensions......................... 28
Table 8 Cooling Pressure – Standard Airow ...... 29
Table 9 Cooling Pressure – Balanced Climate
Airow ............................................... 30
Table 10 Electrical Specications J**AC............. 31
Table 11 Recommended Airow ......................... 32
Table 12 Blower Speeds for Unit Operational
Modes................................................ 32
Table 13 Indoor Blower Performance .................. 34
Table 14 Maximum ESP Electric Heat Only......... 35
Table 15 Electric Heat ...................................... 35
Table 16 Vent and Control Options ..................... 36
Table 17 Optional Accessories ........................... 37
GRAPHS
Graph 1 J42AC FAD-NE5 W/O Exhaust
Ventilation Delivery ............................. 38
Graph 2 J48AC FAD-NE5 W/O Exhaust
Ventilation Delivery ............................. 38
Graph 3 J60AC FAD-NE5 W/O Exhaust
Ventilation Delivery ............................. 39
Graph 4 J72AC FAD-NE5 W/O Exhaust
Ventilation Delivery ............................. 39

Manual 2100-723C
Page 4 of 39
WALL MOUNT GENERAL INFORMATION
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.
This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person
responsible for their safety.
Children should be supervised to ensure that they do
not play with the appliance.
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 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.
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
NOTE: Vent options X is without exhaust capability. May require separate field-supplied barometric relief in building.
CONTROL MODULES
J – LAC and Alarm Relay (ALR)
COIL OPTIONS
X–Standard
J 42 A C –A 00 X P X X X J
MODEL SERIES
REVISION
KW
FILTER OPTIONS
P–2" MERV8 Disposable
PLACEHOLDER
X–Future Use
COLOR OPTIONS
X–Beige (Standard)
CAPACITY
42 –3½ Ton
48 –4 Ton
60 –5 Ton
72 –6 Ton
VENTILATION OPTIONS
X–Fresh Air Damper - No Exhaust (Standard)
Z – Full Flow Economizer, JADE
VOLTS & PHASE
A–230/208/60/1
B–230/208/60/3
C–460/60/3
A – Air Conditioner

Manual 2100-723C
Page 5 of 39
Duct Work
All duct work, supply and return, must be properly
sized for the design airow 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 the Maximum External Static Pressure (ESP)
of Operation – Electric Heat Only table on page 35.
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.
All model series require a 1/4" clearance to
combustible material for the rst 3' of duct attached to
the outlet air frame. See instructions on page 10 and
Figures 13 − 17 (pages 13 – 16) 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 a 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
Kits RG5 or RFG5 be installed when no return duct
is used. Contact distributor or factory for ordering
information. If using a return air lter grille, lters must
be of sufcient 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
The lters can be serviced from the outside by
removing the front control panel cover (see Figure 1).
Two (2) 20" x 20" x 2" disposable lters come standard
with each unit.
Filter Removal/Installation
1. Remove left lter rst by pulling on lter removal
slide (see Figure 2).
2. Slide second lter to the left around the wires and
pull the lter out (see Figure 3).
3. Reverse the order for new lter installation.
NOTE: When installing new filters, make sure that
airflow arrows on filters point up.
FIGURE 1
Front Control Panel Cover
Front
Control Panel
Cover
FIGURE 3
Removing Second Filter
Switching Filter Sizes
1. To switch from 2" to 1" lters, start by removing
the lter slide and bend the tabs up (see Figures 4
and 5 on page 6).
2. Locate the lter support brackets and remove the
four (4) screws holding them to the top of the
control panel (see Figure 6 on page 6).
Filter
Removal Slide
FIGURE 2
Removing Left Filter

Manual 2100-723C
Page 6 of 39
NOTE: When installing new filters, make sure that
airflow arrows on filters point up.
7. Reverse the steps above to switch from 1" to 2"
lters.
FIGURE 6
Remove Four Screws
FIGURE 7
Re-Install Filter Support Brackets into Upper Slots
3. Pull the brackets out towards the front of the unit.
The back of the bracket will slip out of the lower
slots at the back of the lter tray.
4. Re-install the lter support brackets into the upper
slots at the back of the lter tray (see Figure 7).
5. Re-install the four (4) screws into the lower
screw holes on the lter support brackets. If the
tabs have been bent down, they will need to be
straightened out to be used.
6. Install the right 1" lter rst followed by the left
lter (see Figures 8 and 9).
Upper slots for
1" lters
Lower slots for
2" lters
FIGURE 8
Install Right 1" Filter
FIGURE 9
Install Left 1" Filter
FIGURE 4
Filter Tabs in Down Position
FIGURE 5
Bend Filter Tabs to Up Position

Manual 2100-723C
Page 7 of 39
Fresh Air Intake
All units are built with fresh air inlet louvers punched
in the side grilles.
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, remove the two (2) screws
in the bottom of the blade (see Figure 10). Remove right
side grille to access the damper blade.
There is an adjustable slide on the side of the fresh air
intake that can be adjusted to limit how far the damper
opens so that the amount of fresh air that enters the
structure is regulated.
Graphs found on pages 38 and 39 give approximate
fresh air amounts based on the slide adjustment
setting.
All capacity, efciency and cost of operation
information is based upon the fresh air blank-off plate
in place.
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.
MIS-3977
MIS-3977
BLADE IS SCREWED CLO
SED
FOR SHIPPING. REMOVE
(2)
SCREWS FOR FRESH AIR IN
TAKE
DURING UNIT OPERA
TION.
Blade is screwed closed for
shipping. Remove two (2)
screws for fresh air intake
during unit operation.
FIGURE 10
Fresh Air Damper

Manual 2100-723C
Page 8 of 39
INSTALLATION
Basic Installation Design and
Application Planning
Successful unit installations require proper planning
and site inspection before installation begins. Before
installing the wall mount unit, make sure that all
service and airow clearances are met and that the
unit can meet all applicable code and regulation
requirements. Provide an inspection of both the inside
and outside of the structure by reviewing oorplans
and/or visiting the installation site.
Wall Construction
The wall must be inspected to ensure that the weight
of the unit can be supported. Be sure to review all
applicable construction codes and regulations including
seismic requirements. When inspecting wood frame
walls, the wall construction must be strong and
rigid enough to carry the weight of the unit without
transmitting any unit vibration. It is important that
the side unit wall mounting lags and optional bottom
bracket are supported by structural members inside
the wall cavity. Concrete block and brick walls must be
thoroughly inspected to ensure that they are capable of
carrying the weight of the installed unit. Metal buildings
must contain structural components to support the unit
weight. If heavily corrugated siding is present, it may
need to be trimmed and ashed similar to a window
to provide a at, even surface to attach and seal the
unit to the wall. Heavy gauge corrugations that would
be present on shipping containers and blast-proof
structures may require the installation of a metal plate
over the corrugated area. It is important that the unit
area is weatherized and sealed to avoid air and water
inltration into the area between the unit and the wall.
Outdoor Area Inspection
Inspect the outdoor area of the jobsite or review
construction plans and locate the area where the wall
mount is to be installed. The outdoor area must be
free from obstructions including fences, bushes and
walls that will hinder unit operation regarding outdoor
condenser airow and unit serviceability. Do not
install units in enclosed areas that limit the amount
of ambient temperature airow. Warm air will exit
the front condenser section of the unit, and outdoor
ambient temperature air must be able to enter side
intake condenser openings of the unit. Portable or
modular building placement must be in a way that the
wall mount units have a constant supply of outdoor air
for proper unit operation. Make sure that the service
panels of the unit are accessible. Inspect wall surfaces
for obstructions that could hinder unit installation
and servicing including outdoor electrical conduits,
junction boxes, wall drains, vent hoods, windows, doors,
overhangs and posts.
Condensate Water Drainage
Review all codes and requirements for unit condensate
drainage. A clear, exible PVC drain hose (3/4" ID, 1"
OD) extends from the drain pan in the upper section of
the unit and extends down to the unit base. An opening
is supplied towards the back of the unit base for the
drain hose to pass through, and the hose extends 1"
to 2" below the unit base. Water removed from the
indoor air (condensate) will be expelled from the unit
in large amounts during cooling operation through the
hose. Units running in cooling operation in cold outdoor
below freezing conditions can cause the condensate
to freeze after leaving the drain hose. 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 ensure
proper drainage throughout seasonal use.
Indoor Ducted and Non-Ducted
Applications
Air distribution inside the structure being conditioned
plays an important role in making sure the area is
a consistent temperature. Improper air distribution
can result in areas being cooler or warmer, electrical
equipment not receiving sufcient airow or occupancy
discomfort felt inside an area. Thermostat or indoor
temperature sensor placement inside the area being
conditioned also plays an important role in indoor
climate control.
Indoor Supply Airow
Indoor installation areas must provide a non-restrictive
path for the conditioned supply air to leave supply
grilles and registers. Inspect the area to ensure that all
indoor portions of the room or rooms will have access
to supply air. Ductwork may be used to ensure proper
air circulation and all provided ductwork guidelines and
clearances must be followed. Non-ducted applications
must use a supply louver grille installed over the supply
opening inside the room. Be sure to adjust supply
deectors to properly disperse the conditioned supply
air to all parts of the room. Avoid closing sections of
the supply grilles which would cause unneeded supply
duct pressurization.
Indoor Return Airow
A non-restrictive path for room air returning to the
center section of the unit must be provided inside
the room. Avoid placing objects including furniture,
electronics equipment, equipment racks and cabinets
directly in front of the unit return grilles and registers.
Bard recommends at least 2' between solid objects
and return grilles or registers. Ductwork may be used to
ensure proper air circulation and all provided ductwork
guidelines and clearances must be followed. Non-
ducted applications must use a return louver grille
installed over the return opening inside the room.

Manual 2100-723C
Page 9 of 39
Ducted Applications
Field fabricated supply and return duct work may be
installed inside the structure being conditioned. A short
supply and/or return stub duct may be connected to the
unit supply and return anges before unit installation to
help with duct connections inside the structure. Supply
and return ducts must be properly sized for the design
airow 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 conserve energy, reduce heat conductivity,
and prevent condensation or moisture damage. Refer
to the Maximum External Static Pressure (ESP) of
Operation – Electric Heat Only table on page 35.
Design the duct work according to methods given by
the Air Conditioning Contractors of America (ACCA).
When duct work is installed in 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. Ducts through the
walls must be insulated and all joints taped or sealed to
prevent air or moisture from entering the wall cavity.
All model series require a 1/4" clearance to
combustible material for the rst 3' of duct attached to
the outlet air frame. See instructions on page 10 and
Figures 13 − 17 (pages 13 – 16) for further details.
A non-restrictive metallic supply air grille with
deectors is required for free blow applications. Contact
the local Bard distributor or visit www.bardhvac.com for
ordering information.
A metallic return air grille is required for non-ducted
applications. The spacing between louvers on the grille
shall not be larger than 5/8". It is recommended that a
Bard Return Air Grille Kit is installed that is designed
specically for the wall mount product. Contact the
local Bard distributor or visit www.bardhvac.com for
ordering information. A eld-supplied return grille
that meets the 5/8" louver criteria and does not cause
the unit to exceed the maximum specied external
static pressure (ESP) may be used. If using a return
air lter grille, lters must be of sufcient size to
allow a maximum velocity of 400 fpm. Filter return
air grilles do not lter air being brought into the
structure through ventilation options including fresh air
dampers, ventilators, economizers and energy recovery
ventilators. Be sure to install the return grille with the
louvers pointed downward towards the oor. This will
help ensure return air is drawn upward from the oor
and improve air circulation in the room.
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to
installation only in a single story structure.
Thermostat or Indoor Temperature Sensor Placement
The location and installation of the thermostat or
temperature sensor that monitors indoor temperature is
very important regarding unit operation. Avoid placing
the thermostat in an area exposed to direct sunlight
or air from doorways leading outdoors. Use a piece
of insulating material to close off conduit openings
or holes in the wall surface for wire entry into the
thermostat or temperature sensor. This will help avoid
non-conditioned air from entering the thermostat
and effecting temperature and/or humidity readings.
As common practice, the thermostat or temperature
sensor should measure the temperature of the air
being returned to the unit, and not the conditioned
air being supplied by the unit. Placing the thermostat
or temperature sensor near a return air opening will
normally result in optimal unit performance.
Unit Installation
Make sure to have the proper tools at the work site that
are needed for unit installation. The following steps
are provided to ensure the unit is installed properly to
the wall surface, and that the unit will provide years of
service with minimal service requirements.
Materials/Tools List
Additional hardware and miscellaneous supplies are
needed for installation. These items are eld supplied
and must be sourced before installation. This list also
includes tools needed for installation.
Fire hazard.
Maintain minimum 1/4" clearance between the
supply air duct and combustible materials in
the rst 3' of ducting.
Failure to do so could result in re causing
damage, injury or death.
!WARNING
Free Blow Applications
Some installations may not require extensive supply
duct work throughout the structure and are referred
to as free blow applications. A short eld-fabricated
supply duct must be used in the wall cavity to
transition between the supply collar on the unit and
the supply louver grille in the room. The duct must
be properly insulated in order to conserve energy,
reduce heat conductivity and prevent condensation or
moisture damage. All joints must be taped or sealed to
prevent air or moisture entering the wall cavity. Follow
all clearances including distances to combustible
materials and all instructions provided in this manual.

Manual 2100-723C
Page 10 of 39
• Appropriate safety gear including gloves and safety
glasses
• 5/16" hex bit with drill driver
• Phillips head screwdriver
• Small straight (thermostat) screwdriver
• Tape measure
• Leveling device
• Two (2) tubes of caulk and caulk gun
• Utility knife
• Tools for cutting holes in the wall surface (if
needed)
• Electrical components and wiring along with
electrical tools
• Multimeter
• Wall fasteners for side anges, bottom mounting
bracket and top rain ashing.
• Duct tape and/or other duct sealing materials.
Wall Preparation
1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figure
13 on page 13. Be sure the openings are square
and level. Follow all clearances including distances
to combustible materials and all instructions
provided in this manual.
2. Review all electrical requirements provided in this
manual and plan out electrical entrances into the
building. Also plan electrical conduit routing and
thermostat placement, if necessary.
3. Install necessary duct work and prepare the
openings for unit installation.
4. Clean the exterior wall where the unit is to be
installed and make sure it is able to provide a
smooth, level, debris-free surface. Remove all
construction debris from the supply, return and
electrical hole cutting process.
Wall Mount Installation to Wall Surface
1. Remove packaging from unit and make sure the
unit is not damaged before installation. A top rain
ashing is supplied for eld use and is mounted to
the back of the unit for shipping. Remove the rain
ashing before locating the unit against the wall.
Top rain ashing is required to avoid water entering
the area behind the unit that is against the wall. A
bottom mounting bracket, attached to the skid for
shipping, is provided for ease of installation but
is not required. Review all requirements listed on
unit labels and on serial plate located on the side
of the unit.
2. Locate and mark bolt hole locations and bottom
mounting bracket location. Install bottom
mounting bracket with eld-supplied fasteners to
wall if it is to be used (optional). Bracket must be
level and installed in the correct location to help
support the unit during the installation process
(see Figure 13).
3. Position the wall mount unit close to the wall
surface where it will be installed. Install rain
ashing at the top of the unit facing the wall by
hooking the hem bend into the rear bend of the
unit top (see Figure 13).
4. Apply a liberal amount of caulk on left and right
cabinet side wall mount brackets and back of
top rain ashing. Place unit back surface ush
against wall. Unit must be level to ensure proper
condensate drainage. Optional bottom bracket may
be used to help support the unit.
5. Units are secured to the wall by using eld-
supplied fasteners along each side of the wall
mount through the built-in wall mounting brackets.
It is the responsibility of the installer to select
the proper fastener to secure the unit to the wall
based on wall construction and applicable building
codes. Typical installations may include 5/16"
fasteners with 7/8" diameter at washers. Be sure
unit is securely mounted and all weight-bearing
fasteners are attached to the weight supporting
structural members of the wall.
6. Apply a bead of caulk between the back of the unit
top and the front surface of the top rain ashing
(see Figure 13).
7. Connect unit duct work from the inside of the
building following all clearances and instructions
provided. 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 use code approved duct tape or other sealing
materials to seal the duct work to the unit.
8. On side-by-side installations, maintain a minimum
of 20" clearance on both sides to allow access to
heat strips and to provide proper airow to the
outdoor coil. Additional clearance may be required
to meet local or national codes.

Manual 2100-723C
Page 11 of 39
* For vent installation and removal, one side of the unit
requires 45" clearance in the vent area. See Figure
11 for clarity.
See Specications Sheet S3590.
TABLE 1
Clearance Required for Service Access and
Adequate Condenser Airow
Model Left
Side
Right
Side
Discharge –
Front
J42AC
J48AC
J60AC
J72AC
20" 20" 10'
TABLE 2
Minimum Clearances Required
to Combustible Materials
Model Supply Air Duct (1st 3') Cabinet
J42AC
J48AC
J60AC
J72AC
1/4" 0"
FIGURE 11
Vent Installation/Removal Clearance Required
2034"
2"
3714"
1734"
45"
MIS-4042
KEEP AREA
CLEAR FOR 45"
IN FRONT OF
SIDE PANEL
OBJECT OR WALL
IN THIS SECTION OR ANY
OTHER OBSTRUCTION
OF UNIT
OR RIGHT SIDE OF UNIT
CLEARANCE NEEDED ON LEFT
VENT ASSEMBLY
SHOWN OUTSIDE
AVOID LOCATING UNIT DISCONNECT
VENTS CAN BE INSTALLED
FROM EITHER SIDE OF UNIT.
45"

Manual 2100-723C
Page 12 of 39
FIGURE 12
Unit Dimensions
Width
(W)
Depth
(D)
Height
(H)
Supply Return
A B C B E F G I J K L M N O R S T
J42AC
J48AC 42.00 25.52 84.75 9.88 29.88 15.88 25.52 43.88 12.63 39.06 30.06 43.25 26.94 55.59 52.59 8.82 43.00 1.44 16.00 1.88
J60AC
J72AC 42.00 25.52 92.88 9.88 29.88 15.88 25.52 43.88 12.63 45.00 30.06 49.25 35.06 61.72 58.72 8.82 43.00 1.44 16.00 10.00
All dimensions are in inches. Dimensional drawings are not to scale.
2.000
Return Air Opening
Supply Air Opening
MIS-3978 A
Condenser Air Outlet
Ventilation Air
Inlet
Cond. Air
Exhaust Air
Brackets
(Built In)
Mounting
Side Wall
Location
Shipping
Flashing
Top Rain
DO NOT PLACE ELECTRICAL
ENTRANCES IN SHADED AREAS
ABOVE DUE TO POTENTIAL
INTERFERENCE WITH COPPER TUBING
L
O
B
E
.375
M
N
T
S
S
S
S
S
R
.375
TYP.
Access Panel
(Lockable)
Disconnect
C. Breaker/
Filter Behind Control Panel Door
Optional
Electrical
Entrance
Drain
W
G
F
4° Pitch
Rain Hood
Electrical
Panel
High Voltage
Built In
Entrance
Heater Access
Electric Heat
Low Voltage
Electrical
Entrance
1.375
A
K
H
D
C
I
2.250
J

Manual 2100-723C
Page 13 of 39
FIGURE 13
Mounting Instructions
13
4"4"
D
16"
16"
16"
16"
16"
61
2"61
2"
1" 3"
4"
Typ.
4"
Typ.
61
2"30"
E
F
A CC
B
G
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
TOP.
WALL
WALL STRUCTURE
1/4" CLEARANCE ONALL
FOUR SIDES OFSUPPLY
AIRDUCTIS REQUIRED
FROM COMBUSTABLE
MATERIALS
HEATER ACCESS
PANEL
FOAMAIRSEAL
RAIN FLASHING
SUPPLIED
TOP
Right Side ViewWall Opening and Hole Location View
Supply Opening
Return Opening
UNITS REQUIRED DIMESIONS A B C D E F G
J42AC-J48AC
UNITS
REQUIRED DIMESIONS TO
MAINTAIN 1/4" MIN. CLEARANCE
FROM COMBUSTIBLE
MATERIALS 30 1/2 10 1/2 6 1/4 1 1/4 29 3/4 16 1 7/8
REQUIRED DIMENSIONS TO
MAINTAIN RECOMMENDED 1"
CLEARANCE FROM
COMBUSTIBLE MATERIALS 32 12 5 1/2 2 29 16 1 7/8
J60AC-J72AC
UNITS
REQUIRED DIMESIONS TO
MAINTAIN 1/4" MIN. CLEARANCE
FROM COMBUSTIBLE
MATERIALS 30 1/2 10 1/2 6 1/4 1 1/4 29 3/4 16 10
REQUIRED DIMENSIONS TO
MAINTAIN RECOMMENDED 1"
CLEARANCE FROM
COMBUSTIBLE MATERIALS 32 12 5 1/2 2 29 16 10
MIS-4069 A

Manual 2100-723C
Page 14 of 39
FIGURE 14
Electric Heat Clearance
NOTE 1: SIDE SECTION VIEW OF SUPPLY AIR
DUCT FOR WALL MOUNTED UNIT SHOWING 1/4"
CLEARANCE TO COMBUSTIBLE SURFACES.
Fire hazard.
Maintain minimum 1/4" clearance between the
supply air duct and combustible materials in
the rst 3' of ducting.
Failure to do so could result in re causing
damage, injury or death.
!WARNING

Manual 2100-723C
Page 15 of 39
FIGURE 15
Wall Mounting Instructions
FIGURE 16
Wall Mounting Instructions
I
A
C
K
E + 1.000
B
1.000
L
C
STRUCTURAL STEEL
2 x 6
SEE UNIT DIMENSIONS, FIGURE 2,
FOR ACTUAL DIMENSIONS.
SUPPLY DUCT
OPENING
FRAMING MATERIAL
ALL AROUND DUCT
1.000" CLEARANCE
2 x 4'S, 2 x 6'S &/OR
OPENING
RETURN DUCT
INTERIOR FINISHED WALL
OVER FRAME
EXTERIOR FINISH WALL
OVER FRAME
ATTACH TO BOTTOM
PLATE OF WALL
1.000" CLEARANCE
ALL AROUND DUCT
ATTACH TO TOP
PLATE OF WALL
THIS STRUCTURAL MEMBER
LOCATED TO MATCH STUD
SPACING FOR REST OF WALL.
ASECOND MEMBER MAY BE
REQUIRED FOR SOME WALLS.
MIS-3982
SEE UNIT DIMENSIONS, FIGURE 12,
FOR ACTUAL DIMENSIONS
See Figure 13 Mounting Instructions
WALL BEFORE
CONCRETE BLOCK WALL INSTALLATION
OPENING
RETURN AIR
WALL STRUCTURE
INSTALLING UNIT.
OPENING
WOOD OR STEEL SIDING
MOUNT ON UNIT
BOTTOM MOUNTING
WOOD FRAME WALL INSTALLATION
BRACKET. MOUNT ON
BEFORE INSTALLATION
SIDE VIEW
FACTORY SUPPLIED
RAIN FLASHING.
SUPPLY AIR
MIS-3981 A

Manual 2100-723C
Page 16 of 39
FIGURE 17
Common Wall Mounting Installations
FLASHING
RECOMMEND WALL SLEEVE
WALL
RAIN
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
SUPPLY AIR DUCT
FINISHED CEILING
RAFTERS
WALL
OPENING WITH
CEILING SURFACE
OUTSIDE
WALL
WALL
WALL SLEEVE
SUPPLY DUCT MAY BE LOCATED IN AN ATTIC
FINISHED CEILING SURFACE
RAIN
CLOSET WALL
FINISHED CEILING SURFACE
RAIN
RECOMMEND WALL SLEEVE
RAFTERS
GRILLE
FLASHING
OR BELOW CEILING RAFTERS AS SHOWN
OR BELOW CEILING RAFTERS AS SHOWN
FLASHING
OUTSIDE
SURFACE
RAIN
FLASHING
SLEEVE
FINISHED
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
GRILLE
OUTSIDE
OR BELOW CEILING RAFTERS AS SHOWN
SUPPLY AIR DUCT
RAFTERS
RETURN AIR
RETURN AIR
RETURN AIR
OPENING WITH
GRILLE
FALSE WALL
SUPPLY AIR DUCT
OPENING WITH GRILLE
FALSE WALL INSTALLATION CLOSETINSTALLATION
DUCTED SUPPLY
RETURN AT UNIT
FREE AIR
NO DUCT
MIS-4043 A
RAISED FLOOR
RETURN AIR
RETURN AIR
GRILLE
SUPPLY AIR
GRILLE
SUPPLY AIR DUCT
LOWERD
CEILING
OUTSIDE
WALL
RAFTERS
RETURN AIR
SPACE

Manual 2100-723C
Page 17 of 39
Wiring – Main Power 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 on the serial plate, in the unit
specications and also in Table 10 on page 31 list fuse
and wire sizes (75°C copper) for all models including
the most commonly used heater sizes. Also shown are
the number of eld 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 type
and size must be used for proper circuit protection and
also to ensure that there will be no nuisance tripping
due to the momentary high starting current of the
compressor motor.
Three phase models must have proper phasing. A phase
monitor is included in all three phase models, and will
indicate improper phasing during a call for cooling
(24VAC at Y1 terminal). See provided information
included in this document regarding the phase monitor.
High Voltage Connections
Route eld wires under the eld wire shield shown in
Figure 18. (The eld wire shield can be removed for
wire installation.) If eld power is supplied to the left
side of the unit, run the high voltage wires under the
shield and to the right of the wire shield next to the
compressor contactor and up into the upper control
FIGURE 18
High Voltage Connections
MIS-4044
MIS-4044
USE CONDUIT
WHEN FIELD WIRES
COME IN THROUGH
THE BACK
RIGHT SIDE VIEW
WIRE SHIELD
FIELD HIGH OR LOW
VOLTAGE WIRE SHIELD
FRONT VIEW
MIS-4044
USE CONDUIT
WHEN FIELD WIRES
COME IN THROUGH
THE BACK
RIGHT SIDE VIEW
WIRE SHIELD
FIELD HIGH OR LOW
VOLTAGE WIRE SHIELD
FRONT VIEW
Electrical shock hazard.
Do not operate this equipment without an
earth ground attached and always disconnect
the remote electric power supplies before
servicing.
Electrical shock can result in serious injury or
death.
!WARNING
Main electrical power must be supplied to the unit
from a clean, reliable power source. Verify voltage being
supplied to the unit is consistent during all times of the
day and within the range specied for the unit in the
unit specications and on the unit serial plate. Voltage
must be measured at the eld power connection point
in the unit and while the unit is operating at full load
(maximum amperage operating condition).
Refer to the unit serial plate and unit specications
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
eld wiring used must be sized to carry that amount
of current. Depending on the installed KW of electric
heat, there may be two eld power circuits required. If
this is the case, the unit serial plate will so indicate.

Manual 2100-723C
Page 18 of 39
panel where the connections are made. If eld power is
supplied to the right of side of the unit, the low voltage
wires can be run under the eld wire shield to access
the low voltage terminal strip.
When eld wires are supplied through the back of the
unit, exible conduit must be extended through the
back of the unit and terminate into the knock-outs on
the upper control panel (see Figure 18).
Wiring – Low Voltage
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:
Tap: 240 Range: 253 – 216
Tap: 208 Range: 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).
For low voltage wiring, an 18 gauge copper, color-
coded cable is recommended. See Table 6 for more
information.
Low Voltage (24VAC) Connections
These units use a 24-volt AC low voltage circuit.
Cterminal is the 24VAC common and is grounded.
Gterminal is the indoor blower 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) or Y2 disables Balanced
Climate mode if the Y1-Y2 jumper is removed (see page
24).
B/W1 terminal is the 1st stage electric heat.
W2 terminal is the 2nd stage heat (if equipped).
Aterminal is the ventilation input. This terminal
energizes any factory-installed ventilation option and
indoor blower.
Lterminal is 24 volt alarm active output.
For units equipped with an alarm relay:
1 terminal is the normally closed contact on the relay.
2 terminal is the normally open contact on the relay.
3 terminal is the common contact on the relay.
Unit Shutdown Feature (Standard on All Models)
The RT terminal is the 24VAC transformer output,
and the R terminal is the 24VAC hot terminal for the
operation of the equipment. RT and R are connected
with a brass jumper bar which can be removed and RT
and R connected to an external NC (normally closed)
contact such as a re/smoke detector that will cause
shutdown of the equipment upon activation.
Balanced Climate™ Feature (Standard on All Models)
All units are equipped with the capability of running
in Balanced Climate mode. This mode is designed to
enhance the comfort level by reducing the indoor airow
amount and extending the run time to help extract more
humidity during cooling operation. The Y1 terminal
is the 24VAC input for Balanced Climate compressor
cooling operation. The Y2 terminal is the 24VAC input
for compressor cooling standard operation. Y1 and Y2
are connected with a brass jumper bar which can be
removed to enable Balanced Climate mode. Units with
an economizer will not have the brass jumper installed.
Refer to vent manuals for instructions on how Balanced
Climate works with each vent.
To operate in Balanced Climate mode, a 2-stage
cooling thermostat is required. The lower indoor airow
operation is overridden by utilizing a 2-stage thermostat.
If the call for cooling is not satised within a given
time frame or temperature differential (specied by
the thermostat), the thermostat will send a signal to
Y2 which then increases the blower speed back to the
selected speed. See pages 32
– 34 for blower speed
selection options.
Refer to page 23 for additional Balanced Climate
requirements and limitations.
Ventilation Features (Optional)
See ventilation instructions provided with unit for low
voltage wiring.
Low Ambient Control (LAC)
The low ambient control is a pressure switch that is
attached to the liquid line of the system and monitors
high side pressure. Operation of the LAC occurs as
outdoor temperatures drop below 60°F. LAC operation
cycles the condenser fan on/off based on pressure
changes caused by outdoor temperature changes.
Outdoor Temperature Switch and Freeze Protection
Thermostat
An outdoor temperature switch and an evaporator
freeze protection thermostat is supplied with all units
that have a low ambient control. The outdoor switch
disables Balanced Climate mode (if enabled) when
the temperature drops below 50°F. This prevents
potential evaporator coil freeze up issues. For units
with mechanical dehumidication, this switch must
remain disconnected when Balanced Climate mode
is not being used. Refer to unit wiring diagram. The
freeze thermostat cuts out compressor operation if the
evaporator begins to freeze up.
Alarm Relay Feature (Controls Option)
The alarm relay provides a set of NO (normally open)
and NC (normally closed) pilot duty contacts that
operate when the compressor control module locks out
compressor operation because of a high or low system
refrigerant pressure event.

Manual 2100-723C
Page 19 of 39
TABLE 4
Humidity Controls
Part Number Predominate Features
8403-038
(H600A1014)
SPDT switching, pilot duty 50VA @ 24V;
Humidity range 20-80% RH
8403-047
(H200-10-21-10)
Electronic dehumidstat SPST closes-
on-rise; Humidity range 10-90% with
adjustable stops
TABLE 5
CO2Controllers
Part Number Predominate Features
8403-056
CO2ventilation control with digital display.
Normally Open SPST (Default: Close at
800ppm)
8403-067
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 6
Thermostat Wire Size
Transformer
VA FLA Wire Gauge
Maximum
Distance
In Feet
55 2.3
18 gauge
16 gauge
14 gauge
12 gauge
60
100
160
250
TABLE 3
Wall Thermostats
Part Number Predominate Features
8403-057
(TH3110D1040)
1 stage Cool, 1 stage Heat; Electronic Non-Programmable; Auto or Manual changeover
8403-059
(TH5220D1219/U)
2 stage Cool, 2 stage Heat; Electronic Non-Programmable; HP or Conventional (Default: AC); 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; Dehumidication Output
CS9B-THO
3 stage Cool, 3 stage Heat; Programmable/Non-Programmable; HP or Conventional; Auto or Manual Changeover;
Humidity Sensor w/ dehumidication; Motion Sensor w/Intelligent Learning Control; BACnet-compatible
CS9B-THOC
3 stage Cool, 3 stage Heat; Programmable/Non-Programmable; HP or Conventional; Auto or Manual Changeover;
Humidity Sensor w/ dehumidication; CO2Sensor; Motion Sensor w/Intelligent Learning Control; BACnet-compatible
CS9BE-THO
3 stage Cool, 3 stage Heat; Programmable/Non-Programmable; HP or Conventional; Auto or Manual Changeover; Humidity
Sensor w/ dehumidication; Motion Sensor w/Intelligent Learning Control; BACnet-compatible; Ethernet-compatible
CS9BE-THOC
3 stage Cool, 3 stage Heat; Programmable/Non-Programmable; HP or Conventional; Auto or Manual Changeover;
Humidity Sensor w/dehumidication; CO2Sensor; Motion Sensor w/Intelligent Learning Control; BACnet-compatible;
Ethernet-compatible
8403-089
(T4 Pro)
1 stage Cool, 1 stage Heat – Heat Pump; 1 stage Cool, 1 stage Heat – Conventional; Programmable/Non-
Programmable Electronic; Auto or Manual changeover
8403-090
(T6 Pro)
2 stage Cool, 3 stage Heat – Heat Pump; 2 stage Cool, 2 stage Heat – Conventional; Programmable/Non-
Programmable Electronic; Auto or Manual changeover
8403-091 1 stage Cool, 1 stage Heat; Non-Programmable; FEMA use
8403-092
(T6 Pro Wi-Fi)
2 stage Cool, 3 stage Heat – Heat Pump; 2 stage Cool, 2 stage Heat – Conventional; Programmable/Non-
Programmable Electronic; Auto or Manual changeover; Wi-Fi

Manual 2100-723C
Page 20 of 39
FIGURE 19
Programmable Thermostat Connections
Thermostat W1/E AYO/D
LO/BY2Y1R GC W2
Bard #8403-060
61012 119 4 12-Pin
Vent Plug 23 5 7
CO2 OUT
Optional CO2 Controller
Bard Part #8403-096
6
5
4
3
2
1
TEMP-OUT
24VAC
W3 65421R
Unit Low
Voltage
Term. Strip W2C GRT Y1 Y2 B/W1 L DA 3
not present if economizer is factory installed. Units with economizers have balanced
Install jumper for 1 stage electric heat on units with more than 10KW
Y1 Y2 jumper
climate jumper in economizer, refer to economizer manual.
Factory installed jumper. Remove jumper to activate Balanced Climate™ mode.
8
7
6
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)
5
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 tofunction during scheduled occupied
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.
4
Factory installed jumper. Remove jumper and connect
to N.C fire alarm circuit if emergency shutdown required.
3
Wire not needed below 15KW.2Wire required for dehumidification models only.
1
Do not add these wires if setting up for modulating control. See note 5.
9A 2-stage thermostat is recommended for Balanced Climate mode.
W1/E
SC SC
SC
Completestat
Model #CS9B-THOA or
Model #CS9BE-THOA
W2
COM G
24V Y1 Y2 O/B L DA GND
MIS-3974
ALL VENT OPTIONS PLUG IN HERE
2
3
3
1
6
D
4
5
7
If notequipped withaventilation option to plug in, a jumper plug mustbe installed.
4
2
8
9