Bard C36H1-A User manual

Page 1 of 25
Wall Mounted
Packaged Heat Pump
Models:
INSTALLATION INSTRUCTIONS
C36H1-A
C36H1-B
C36H1-C
C42H1-A
C42H1-B
C42H1-C
C48H1-A
C48H1-B
C48H1-C
C60H1-A
C60H1-B
C60H1-C
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual: 2100-586G
Supersedes: 2100-586F
Date: 8-13-21

Manual 2100-586G
Page 2 of 25
CONTENTS
General Information ............................................... 4
General ............................................................... 4
Shipping Damage ................................................. 4
Additional Publications ......................................... 4
Duct Work ........................................................... 6
Filters ................................................................. 6
Fresh Air Intake ................................................... 6
Condensate Drain ................................................. 6
Installation ............................................................... 7
Wall Mounting Information .................................... 7
Mounting the Unit ................................................ 7
Placement ........................................................... 7
Required Steps after Final Placement
(C48H & C60H Units Only) ................................... 7
Wiring – Main Power........................................... 13
Wiring – Low Voltage........................................... 13
Optional Outdoor Thermostat Applications ............ 13
Start Up ................................................................... 14
General ............................................................. 14
Topping Off System Charge ................................. 14
Safety Practices ................................................. 14
Important Installer Note...................................... 14
High and Low Pressure Switch............................. 14
Three Phase Scroll Compressor Start Up
Information........................................................ 14
Phase Monitor.................................................... 15
Service Hints ..................................................... 15
Sequence of Operation........................................ 15
Pressure Service Ports ........................................ 15
Defrost Cycle ..................................................... 16
Service ..................................................................... 18
Solid State Heat Pump Control Troubleshooting
Procedure.......................................................... 18
Checking Temperature Sensor Outside Unit
Circuit............................................................... 19
Fan Blade Setting Dimensions ............................. 20
Removal of Fan Shroud....................................... 20
R-410A Refrigerant Charge ................................. 20
Troubleshooting ECM Indoor Blower Motors........... 24
FIGURES
Figure 1 Fresh Air Damper Assembly.................... 6
Figure 2 Unit Dimensions ................................... 8
Figure 3 Mounting Instructions............................ 9
Figure 4 Electric Heat Clearance ....................... 10
Figure 5 Wall Mounting Instructions .................. 11
Figure 6 Wall Mounting Instructions .................. 11
Figure 7 Common Wall Mounting Installations .... 12
Figure 8 Defrost Control Board .......................... 17
Figure 9 Fan Blade Setting ............................... 20
Figure 10
Control Disassembly.............................. 25
Figure 11 Winding Test....................................... 25
Figure 12 Drip Loop ........................................... 25
TABLES
Table 1 Clearance Required for Service Access
and Adequate Condenser Airow............. 9
Table 2 Minimum Clearances Required to
Combustible Materials ........................... 9
Table 3 Troubleshooting ................................. 18
Table 4 Temperature F vs. Resistance of
Temperature Sensor............................. 19
Table 5 Fan Blade Dimension .......................... 20
Table 6A Cooling Pressure ................................. 21
Table 6B Heating Pressure................................. 21
Table 7 Electrical Specications ...................... 22
Table 8 Indoor Blower Performance .................. 23

Manual 2100-586G
Page 3 of 25
Heat Pump Wall Mount Model Nomenclature
NOTE: All 230/208V units with or without electric heat have circuit breaker. 0C is for 460V circuit breaker and 0KW. No 460V electric heat options w/
circuit breaker available.
460V -0Z and all 460V KW options are with rotary disconnect. See available heater options by unit model number.
KW
0C – 0KW
0Z – 0KW
04 – 4KW
05 – 5KW
06 – 6KW
F8 – 8KW
S8 – 8KW
09 – 9KW
10 – 10KW
15 – 15KW
20 – 20KW
CONTROL MODULES
(See Spec. Sheet S3459)
C 36 H 1 –A 05 V P X X X X
MODEL SERIES
REVISION
H – Heat Pump
SUPPLY AIR OUTLET
X – Front (Standard)
COLOR OPTIONS
X – Beige
1 – White
4 – Buckeye Gray
5 – Desert Brown
8 – Dark Bronze
S – Stainless Steel
CAPACITY
36 – 3 Ton
42 – 3½ Ton
48 – 4 Ton
60 – 5 Ton
VENTILATION OPTIONS
B – Blank-off Plate
V – Commercial Ventilator - Mod. Spring Return w/Exhaust
S – Economizer (Internal) - Fully Modulating w/Exhaust
R – Energy Recovery Ventilator - Motorized with Exhaust
(see Spec. Sheet S3459)
VOLTS & PHASE
A – 230/208/60/1
B – 230/208/60/3
C – 460/60/3
COIL OPTIONS
X – Standard Hydrophilic Fin
Indoor Coil & Uncoated
Aluminum Outdoor Coil
1 – Phenolic Coated Indoor Coil
2 – Phenolic Coated Outdoor Coil
3
– Phenolic Coated ID & OD Coil
FILTER OPTIONS
X – 1-Inch Fiberglass (MERV 2)
M – 2-Inch Pleated (MERV 11)
P – 2-Inch Pleated (MERV 8)
N – 2-Inch Pleated (MERV 13) Filter
B – NPBI TECH + 2-Inch Pleated (MERV 13) Filter
A – UV-C + 2-Inch Pleated (MERV 13) Filter

Manual 2100-586G
Page 4 of 25
GENERAL INFORMATION
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 following section 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.
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.
Additional 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]

Manual 2100-586G
Page 5 of 25
ANSI Z535.5 Denitions:
DANGER: Indicate[s] a hazardous situation which, if
not avoided, will result in death or serious injury. The
signal word “DANGER” is to be limited to the most
extreme situations. DANGER [signs] should not be used
for property damage hazards unless personal injury risk
appropriate to these levels is also involved.
WARNING: Indicate[s] a hazardous situation which,
if not avoided, could result in death or serious injury.
WARNING [signs] should not be used for property
damage hazards unless personal injury risk appropriate
to this level is also involved.
CAUTION: Indicate[s] a hazardous situation which, if
not avoided, could result in minor or moderate injury.
CAUTION [signs] without a safety alert symbol may be
used to alert against unsafe practices that can result in
property damage only.
NOTICE: [this header is] preferred to address practices
not related to personal injury. The safety alert symbol
shall not be used with this signal word. As an
alternative to “NOTICE” the word “CAUTION” without
the safety alert symbol may be used to indicate a
message not related to personal injury.
Electrical shock hazard.
Have a properly trained individual perform
these tasks.
Failure to do so could result in electric shock
or death.
!WARNING
Fire hazard.
Maintain minimum 1/4" clearance between the
supply air duct and combustible materials in
the rst 3' feet of ducting.
Failure to do so could result in re causing
damage, injury or death.
!WARNING
Heavy item hazard.
Use more than one person to handle unit.
Failure to do so could result in unit damage or
serious injury.
!WARNING
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
Sharp metallic edges.
Take care and wear appropriate protective
devices to avoid accidental contact with sharp
edges.
Failure to do so can result in personal injury.
CAUTION
!

Manual 2100-586G
Page 6 of 25
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.
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 is required. See Mounting the
Unit 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 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 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 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
A 1" throwaway lter is standard with each unit. The
lter slides into position making it easy to service. This
lter can be serviced from the outside by removing the
lter access panel. 2" pleated lters are also available
as optional accessories. The internal lter brackets are
adjustable to accommodate the 2" lter by bending two
(2) tabs down on each side of the lter 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, efciency and cost of operation
information is based upon the fresh air blank-off plate
in place and is recommended for maximum energy
efciency.
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 2100-586G
Page 7 of 25
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 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 ange and the rst 3' of supply
air duct require a minimum of 1/4" clearance to
combustible material. However, it is generally
recommended that a 1" clearance is used for
ease of installation and maintaining the required
clearance to combustible material. See Figure 3
for details on opening sizes.
3. Locate and mark lag bolt locations and bottom
mounting bracket location (see Figure 3).
4. Mount bottom mounting bracket.
5. Hook top rain ashing, attached to front-right of
supply ange for shipping, under back bend of top.
6. Position unit in opening and secure with 5/16" lag
bolts; use 7/8" diameter at washers on the lag
bolts.
7. Secure rain ashing to wall and caulk across entire
length of top (see Figure 3).
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.
Placement
1. 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
airow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
2. Care should be taken to ensure that the
recirculation and obstruction of condenser
discharge air does not occur. Recirculation of
condenser discharge air can be from either a
single unit or multiple units. Any object such
as shrubbery, a building or a large object can
cause obstructions to the condenser discharge
air. Recirculation or reduced airow caused by
obstructions will result in reduced capacity,
possible unit pressure safety lockouts and reduced
unit service life.
For units with a draw through condenser, such as
the C**H 11EER, it is recommended there be a
minimum distance of 15' between the front of the
unit and any barrier to airow.
Required Steps after Final Placement
(C48H & C60H Units Only)
The compressor is secured to the unit base for
shipping. Although unit will perform as designed
with the compressor secured in place, there may be
noticeable additional noise and vibration. To obtain
the lowest noise and vibration levels, remove the
compressor shipping brackets after the unit is in its
nal operating location.
Remove the side grille to gain access to the compressor
shipping brackets. The brackets are located on the
compressor double isolation base at the front and rear
of the compressor. The brackets are secured to the unit
base with two (2) screws and secured to the isolation
plate with a 1/4" nut. Remove and dispose of the two
(2) screws and brackets. Re-install the 1/4" nut once
bracket is removed.
INSTALLATION
Heavy item hazard.
Failure to bolt the unit to the wall could
result in the unit falling. Follow all mounting
instructions.
Failure to do so could result in damage, injury
or death.
!WARNING

Manual 2100-586G
Page 8 of 25
3"
8620-160 Drain Fitting -
Supplied with unit,
field installed.
MIS-3190
Panel
Air Inlet
Door
Vent Option
Condenser
Filter Access
Ventilation
Air
Front View
F
W
5.75
G
Panel
indoor coil
Electric
Cond.
Access
Heater
4° Pitch
Rain Hood
Side View
Heat
Built In
Air
Disconnect
(Lockable)
Access Panel
Drain for
Outlet
C. Breaker/
ERV and
ECONWMS
only hood
Low Voltage
Electrical
Entrance
High Voltage
Electrical
Entrance
D
2.13
A
C H
K
J
I
Supply Air Opening
Return Air Opening
Top Rain
Flashing
Shipping
Location
Back View
Electrical
Entrances
Optional
Side Wall
Mounting
Brackets
(Built In)
T
S
S
M
.44
L
Q
P
S
N
O
E
R
S
S
B
Bottom Installation
Bracket - optional use
for direct mount, not
used when unit
installed with curb
C**H
RIGHT UNIT
FIGURE 2
All dimensions are in inches. Dimensional drawings are not to scale.
Dimensions of Basic Unit for Architectural & 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
C36H1
C42H1 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
C48H1
C60H1 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
TABLE 1
Clearance Required for Service Access and
Adequate Condenser Airow
Model Left
Side
Right
Side
C36H
C42H
C48H
C60H
36" 36"
TABLE 2
Minimum Clearances Required
to Combustible Materials
Model Supply Air Duct (1st 3') Cabinet
C36H
C42H
C48H
C60H
1/4" 0"

Manual 2100-586G
Page 9 of 25
FIGURE 3
Mounting Instructions
D
16" 16" 16" 16" 16"
1
7 8
"6
1 2
" 6
1 2
"2
1 8
"
7 8
"
1" 3"
4"
Typ.
4"
Typ.
6
1 2
"30"
E
16"
A CC
3
1 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
Dimension is 10" on T48S1 & T60S1.
kDimension is 6" on T48S1 & T60S1.
k

Manual 2100-586G
Page 10 of 25
FIGURE 4
Electric Heat Clearance
SIDE SECTION VIEW OF SUPPLYAIR DUCT
FOR WALL MOUNTED UNIT SHOWING 1/4 INCH
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 2100-586G
Page 11 of 25
FIGURE 5
Wall Mounting Instructions
FIGURE 6
Wall Mounting Instructions
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
SEE FIGURE 3 – MOUNTING INSTRUCTIONS

Manual 2100-586G
Page 12 of 25
FIGURE 7
Common Wall Mounting Installations
SupplyAir
RoomAir
ReturnAir
ReturnAir
RoomAir
SupplyAir Duct
Supply Air Supply Air
ReturnAir
SupplyAir
RoomAir
Supply Air Supply Air
SupplyAir Duct
RoomAir
ReturnAir
throughout a single area or multiple areas. The supply air mixes
MIS-550 D
Non-Ducted Installations
Outside Wall
Adjustable SupplyGrille
Ceiling
with the room air and cools or heatsoccupants and/or equipment.
Unconditioned room air is returned to the unit through a return
wall.
Fixed Blade Return Grille
sealed to
Unit is
conditioned. The supply air mixes with the room air and cools or
Indoor AreaIndoor Area
Indoor Area
Ceiling
Ceiling
plenum when installing the product.
the outer wall surface. Wall curb use may avoid resizing supply
supply air leaving supplygrille and re-entering the unit return
room air isreturned to the unit through the return grille.Avoid
heats occupants and/or equipment in the area. Unconditioned
Non-ducted installationssupply conditioned air into indoor room
directed byadjusting the 4-waysupply grille to reach areas being
areas without extensive duct work. The supply airstreamis
grille without mixing with room air.
selecta curb that will meet the application requirements and also
static pressure requirementsprovided in this manual.
provide the best unit performance and efficiency.Review duct
grille or return duct work. Avoid using restrictive duct workto
Unit
Mount Return Grille
Fixed Blade
Wall
wall.
Outside Wall
Ducted Installations
Adjustable Supply Grille
Outdoor Wall Curb Installations
sealed to
Unit
Ducted installationssupply conditioned air into indoor room areas
Optional Dropped Ceiling
sealed to
Wall
WAPR11
provided with the wall curb when installing the product.
be exceeded when using a wall curb. Follow all instructions
be the correct size for the unit. Unit duct static requirements cannot
Unit Fixed Blade Return Grille
Mount
Wall
wall. Ceiling
Curb is
Outside Wall
Unit is
Wall
Mount
using solid or flexible ducts. The supply air is distributed
curb.
Optional Dropped Ceiling
reduction.Variouscurb options are available, and it isimportant to
Outside Wall
sealed to
Unit is
wall.
sealed to
Unit is
Unit
Mount
WAPR11 Indoor Sound Plenum Installations
curbs mayalso provide sound isolation and indoor area sound
and return openings thatare currently in an existing wall. Wall
Plenum
Outdoor Wall curbsare installed between the wall mount unitand Indoor sound plenumsare installed inside the room over the unit
return air opening.Plenum use can provide sound isolation and
indoor area sound reduction. The WAPR11 sound plenum
provides a single solution for all unit tonnage sizes. The
WAPR11 maybe installed horizontallyor vertically in the room.
Unit duct static requirements cannot be exceeded when using a
sound plenum.Follow all instructions provided with the sound
Indoor Area
Wall Curb

Manual 2100-586G
Page 13 of 25
Wiring – Main Power
Refer to the unit serial 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 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. 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 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 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 7 for electrical specications.
Wiring – Low Voltage
230/208V, 1 phase and 3 phase units are equipped
with 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 RANGE
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).
For wiring size and connections, refer to Wiring Manual
2100-554.
Optional Outdoor Thermostat
Applications
Since most equipment at the time of manufacture
is not designated for any specic destination of the
country and are installed in areas not approaching the
lower outdoor temperature range, outdoor thermostats
are not factory installed as standard equipment, but
are offered as an option. See specication sheet for
outdoor thermostat options. They may vary according to
the thermostat used to control the unit. There are also
different applications for applying outdoor thermostats.
The set point of either type of outdoor thermostat
application is variable with geographic region and
sizing of the heating equipment to the individual
structure. Utilization of the heating application data
and the heat loss calculation of the building are useful
in determining the correct set points.
NOTE: The additional LAB (low ambient bypass) relay
is required to prevent heater operation during
low temperature cooling operation.

Manual 2100-586G
Page 14 of 25
START UP
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 and 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, 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 signicant 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.
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 ammable.
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 ll 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 signicantly at
warmer temperatures. Once a cylinder or line is full
of liquid, any further rise in temperature will cause
it to burst.
Important Installer Note
For improved start up performance, wash the indoor
coil with a dishwashing detergent.
High and Low Pressure Switch
All C**H wall-mounted air conditioner series models
are supplied with a remote reset for the high and low
pressure switch. If tripped, the pressure switch may be
reset by turning the thermostat off then back on again.
Three Phase Scroll Compresser 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.
These units require R-410A refrigerant and
polyol ester oil.

Manual 2100-586G
Page 15 of 25
Since there is a 50-50 chance of connecting power
in such a way as to cause rotation in the reverse
direction, verication of proper rotation must be made.
Verication 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.
Verication 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.
NOTE: If compressor is allowed to run in reverse
rotation for an extended period of time, 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 specic 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.
Service Hints
1. Caution owner/operator to maintain clean air lters
at all times and also not to needlessly close off
supply and return air registers. This reduces airow
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 airow circulation is essential.
Sequence of Operation
Cooling Stage 1 – 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.
Cooling Stage 2 – Circuit R-Y1 makes at the
thermostat, energizing the 2nd stage solenoid in
the compressor. Default position is not energized.
Compressor will run at low capacity until this solenoid
is energized.
Heating Stage 1 – 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-B 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 Stage 1 heat completes R-Y
circuit, pulling in compressor contactor and starting
compressor and outdoor motor. R-G also make, starting
indoor blower motor.
Heating Stage 2 – Circuit R-Y2 makes at the thermostat,
energizing the 2nd stage solenoid in the compressor.
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 6A and 6B cover all models.
It is imperative to match the correct pressure table to
the unit by model number.
This unit employs high-ow 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 rst 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.

Manual 2100-586G
Page 16 of 25
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 (see
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 on the outdoor coil is shunted out and will
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 articial 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 rst (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.

Manual 2100-586G
Page 17 of 25
120*
SW
1SW 2 TIME (SEC)
OFF
OFF
ON
ON
OFF
ON
OFF
ON
30
60
180
MIS-2668 A
OFF
LOW PRESSUREBYPASS TIMER SWITCH
*(FACTORY SETTING 120 SECONDS)
ACCUMULATED DEFROST TIME TIMER
(FACTORY SETTING 60 MIN.)
ON
FIGURE 8
Defrost Control Board

Manual 2100-586G
Page 18 of 25
SERVICE
Solid State Heat Pump Control
Troubleshooting Procedure
1. NOTE: A thorough understanding of the defrost
cycle sequence is essential. Review that section
(page 26) prior to troubleshooting the control.
Turn on AC power supply to unit.
2. Turn thermostat blower switch to “fan on”—
the indoor blower should start. (If it doesn’t,
troubleshoot indoor unit and correct problem.)
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.
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.
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.
TABLE 3 – Troubleshooting
Sympton Description, Check and Possible Causes What & How to Check / Repair
Compressor
will not start
(heating or
cooling)
1. Check for LED illumination.
Is there an LED illuminated on the board (ashing)? Yes = go to Step #2; No = go to Step #3
2. Check for error codes.
Is the LED ashing 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.
Wait for 5 minute delay or jump board's "speed up pins".
Check for proper operation; if still needed, go back to Step #1.
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 nally unit wiring.
12. No "CC" compressor output signal. Check compressor contactor for proper operation and nally check compressor.
13. Faulty board. Replace defrost board.
Fan outdoor
motor does
not run
(cooling or
heating except
during defrost)
Heat pump control defective Check across fan relay on heat pump control. (Com-NC)
Replace heat pump control.
Motor defective Check for open or shorted motor winding. Replace motor.
Motor capacitor defective Check capacitor rating. Check for open or shorted capacitor. Replace capacitor.
Reversing
valve does not
energize
(heating only)
Heat pump control defective
Check for 24V between RV-C and B-C.
1. Check control circuit wiring.
2. Replace heat pump control.
Reversing valve solenoid coil defective Check for open or shorted coil.
Replace solenoid coil.
Unit will not
go into defrost
(heating only)
Temperature sensor or heat pump control defective
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
defrost
(heating only)
Temperature sensor or heat pump control defective
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.
LED BLINK CODES
BLINK FUNCTION
Slow Normal function (1.0 sec on/1.0 sec off)
Fast Compressor Delay timer active
(0.1 sec on/0.1 sec off)
1 Low pressure switch failure
2 High pressure switch failure/“Soft” Lockout
3 Defrost mode active
4 High pressure switch failure/“Hard” Lockout

Manual 2100-586G
Page 19 of 25
Checking Temperature Sensor Outside
Unit Circuit
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.
3. Check resistance reading to chart of resistance.
Use sensor ambient temperature. (Tolerance of part
is ± 10%.)
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.
TABLE 4
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

Manual 2100-586G
Page 20 of 25
TABLE 5
Fan Blade Dimension
Removal of Fan Shroud
1. Disconnect all power to the unit.
2. Remove the screws holding both grilles, one on
each side of unit, and remove grilles.
3. Remove nine (9) 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.
6. Service motor/fan as needed.
7. Reverse steps to re-install.
R-410A Refrigerant Charge
This unit was charged at the factory with the quantity
of refrigerant listed on the serial plate. AHRI capacity
and efciency ratings were determined by testing with
this refrigerant charge quantity.
The following pressure tables show nominal pressures
for the units. Since many installation specic situations
can affect the pressure readings, this information
should only be used by certied 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
.
MODEL Dimension A
C36H
C42H
C48H
C60H
1.00"
"A"
S**H AIRFLOW
W**H AIRFLOW
MIS-2725 A
C**H
FIGURE 9
Fan Blade Setting
Fan Blade Setting Dimensions
Shown in Figure 9 is the correct fan blade setting for
proper air delivery across the outdoor coil. Refer to
Table 5 for unit specic dimension.
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.