Bard W24HA-B, W30HA-C, W24HA-A, W30HA-B, W24HA-C Installation Instructions Manual

INSTALLATION INSTRUCTIONS

WALL MOUNTED PACKAGE

HEAT PUMP

Models:

W18HA-A W24HA-A

W24HA-B
W24HA-C

W30HA-A
W30HA-B
W30HA-C

W36HA-A
W36HA-B
W36HA-C

W42HA-A
W42HA-B
W42HA-C

W48HA-A
W48HA-B
W48HA-C

W60HA-A
W60HA-B
W60HA-C

W24HADA
W24HADB
W24HADC

W30HADA
W30HADB
W30HADC

W36HADA
W36HADB
W36HADC

W42HADA
W42HADB
W42HADC

W48HADA
W48HADB
W48HADC

W60HADA
W60HADB
W60HADC

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

www.bardhvac.com

Manual: 2100-654C
Supersedes: 2100-654B
Date: 7-26-17

Page 1 of 34

CONTENTS

Getting Other Information and Publications .... 3

Wall Mount General Information .........................4

Heat Pump Wall Mount Model Nomenclature .......... 4

Shipping Damage ................................................. 4

General ............................................................... 4

Duct Work ........................................................... 4

Filters ................................................................. 5

Fresh Air Intake ................................................... 5

Condensate Drain ................................................ 5

Installation ............................................................... 6

Wall Mounting Information .................................... 6

Mounting the Unit ................................................ 6

Clearances Required ............................................. 6

Minimum Clearances ............................................ 6

Wiring – Main Power ........................................... 15

Wiring – Low Voltage Wiring ................................. 15

Start Up ................................................................... 19

General ............................................................. 19

Topping Off System Charge ................................. 19

Safety Practices ................................................. 19

Important Installer Note ...................................... 20

High and Low Pressure Switch ............................. 20

Three Phase Scroll Compressor Start Up

Information ........................................................ 20

Phase Monitor .................................................... 20

Condenser Fan Operation .................................... 20

Service Hints ..................................................... 20

Vent Connection Plug .......................................... 20

Sequence of Operation ........................................ 21

Pressure Service Ports ........................................ 21

Defrost Cycle ..................................................... 21

Service ..................................................................... 24

Solid State Heat Pump Control Troubleshooting

Procedure ......................................................... 24

Checking Temperature Sensor Outside

Unit Circuit ........................................................ 25

Troubleshooting Nidec SelecTech Series ECM

Motors ............................................................... 26

Fan Blade Setting Dimensions ............................. 28

Removal of Fan Shroud ....................................... 28

R-410A Refrigerant Charge ................................. 28

Figures

Figure 1 Fresh Air Damper .................................. 5

Figure 2 Unit Dimensions ................................... 7

Figure 3A Mounting Instructions – W18H, W24H .... 8

Figure 3B Mounting Instructions – W30H, W36H .... 9

Figure 3C Mounting Instructions – W42H, W48H .. 10

Figure 3D Mounting Instructions – W60H ............. 11

Figure 4 Electric Heat Clearance ....................... 12

Figure 5 Wall Mounting Instructions .................. 13

Figure 6 Wall Mounting Instructions .................. 13

Figure 7 Common Wall Mounting Installations .... 14

Figure 8 Programmable Thermostat Connections . 17
Figure 9 Non-Programmable Thermostat

Connections ....................................... 18

Figure 10 Defrost Control Board .......................... 23

Figure 11 Motor Connections .............................. 26

Figure 12 Motor Connections .............................. 27

Figure 13 Fan Blade Setting ............................... 28

Tables

Table 1 Wall Thermostats ................................ 16

Table 2 Humidity Controls ............................... 16

Table 3 CO

Table 4 Thermostat Wire Size ........................... 16

Table 5 Troubleshooting .................................. 24

Temperature vs. Resistance .................. 25

Table 6 Fan Blade Dimension .......................... 28

Table 7A Cooling Pressure ................................. 29

Table 7B Heating Pressure ................................. 29

Table 8 Electrical Specifications ...................... 30

Table 9 Recommended Airflow ......................... 31

Table 10 Indoor Blower Performance .................. 31

Table 11 Maximum ESP of Operation

Electric Heat Only Tables ..................... 32

Table 12 Electric Heat ...................................... 32

Table 13 Optional Accessories ........................... 33

Table 14 Vent and Control Options ..................... 34

Controller ..................................... 16

2

Manual 2100-654C
Page 2 of 34

GETTING OTHER INFORMATION AND PUBLICATIONS

These publications can help when installing the heat
pump. They can usually be found at the local library
or purchased directly from the publisher. Be sure to
consult the current edition of each standard.

National Electrical Code ...................... ANSI/NFPA 70

Standard for the Installation ..............ANSI/NFPA 90A

of Air Conditioning and Ventilating Systems

Standard for Warm Air .......................ANSI/NFPA 90B

Heating and Air Conditioning Systems

Load Calculation for ......................... ACCA Manual J

Residential Winter and Summer Air Conditioning

Duct Design for Residential ............... ACCA Manual D

Winter and Summer Air Conditioning and Equipment
Selection

For more information, contact these publishers:

ACCA Air Conditioning Contractors of America

1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: [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 2100-654C
Page 3 of 34

WALL MOUNT GENERAL INFORMATION

HEAT PUMP WALL MOUNT MODEL NOMENCLATURE

W 42 H A – A 10 X X X X X A

MODEL NUMBER

CAPACITY

18 - 1½ Ton
24 - 2 Ton
30 - 2½ Ton
36 - 3 Ton
42 - 3½ Ton
48 - 4 Ton
60 - 5 Ton

Insert “D” for dehumidification with hot gas reheat. Reference Form 7960-702 for complete details.
For 0 KW and circuit breakers (230/208 volt) or toggle disconnect (460V) applications, insert 0Z in the KW field of the model number.

NOTE: Vent options X, B and M are without exhaust capability. May require separate field-supplied barometric relief in building.

H - Heat Pump

SPECIALTY PRODUCTS 

(Non-Standard)

VENTILATION OPTIONS

X - Barometric Fresh Air Damper (Standard)
B - Blank-Off Plate
M - Motorized Fresh Air Damper
V - Commercial Ventilator - Motorized with Exhaust
S - Economizer (Std.) - Enthalpy
W - Economizer (Full Flow) - Enthalpy
T - Economizer (Full Flow) - Temperature
R - Energy Recovery Ventilator - Motorized with Exhaust
(See Spec. Sheet S3523)

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.

REVISIONS

VOLTS & PHASE

A - 230/208/60/1
B - 230/208/60/3
C - 460/60/3

KW 

COLOR OPTIONS

X - Beige (Standard)
1 - White
4 - Buckeye Gray
5 - Desert Brown
8 - Dark Bronze

FILTER OPTIONS

X - 1" Throwaway (Standard)
W - 1" Washable
P - 2" Pleated

OUTLET OPTIONS

X - Front

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.

CONTROL MODULES

(See Spec. Sheet S3523)

COIL OPTIONS

X - Standard
1 - Phenolic Coated Evaporator
2 - Phenolic Coated Condenser
3 - Phenolic Coated Evaporator
and Condenser

Size of unit for a proposed installation should be

GENERAL

based on heat loss/gain calculation made according
to methods of Air Conditioning Contractors of America

The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.

The refrigerant system is completely assembled and
charged. All internal wiring is complete.

The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and

(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.

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

DUCT WORK

All duct work, supply and return, must be properly
sized for the design airflow requirement of the
equipment. Air Conditioning Contractors of America
(ACCA) is an excellent guide to proper sizing. All duct
work or portions thereof not in the conditioned space
should be properly insulated in order to both conserve
energy and prevent condensation or moisture damage.

equipment.

Manual 2100-654C
Page 4 of 34

Refer to Maximum ESP of Operation Electric Heat
Table 11 on page 32.

Design the duct work according to methods given by
the Air Conditioning Contractors of America (ACCA).
When duct runs through unheated spaces, it should
be insulated with a minimum of 1" of insulation. Use
insulation with a vapor barrier on the outside of the
insulation. Flexible joints should be used to connect
the duct work to the equipment in order to keep the
noise transmission to a minimum.

Models W18 and W24 are approved for 0" clearance to
the supply duct. For models W30, W36, W42, W48
and W60, a 1/4" clearance to combustible material for
the first 3' of duct attached to the outlet air frame is
required. See MOUNTING THE UNIT on page 6 and
Figures 3A – D (pages 8 – 11) and Figure 4 (page 12)
for further details.

Ducts through the walls must be insulated and all joints
taped or sealed to prevent air or moisture entering the
wall cavity.

Some installations may not require any return air duct.
A metallic return air grille is required with installations
not requiring a return air duct. The spacing between
louvers on the grille shall not be larger than 5/8".

Any grille that meets with 5/8" louver criteria may be
used. It is recommended that Bard Return Air Grille
Kit RG-2W through RG-5W or RFG-2W through RFG­5W be installed when no return duct is used. Contact
distributor or factory for ordering information. If using
a return air filter grille, filters must be of sufficient size
to allow a maximum velocity of 400 fpm.

NOTE: If no return air duct is used, applicable

installation codes may limit this cabinet to
installation only in a single story structure.

FILTERS

A 1" throwaway filter is standard with each unit. The
filter slides into position making it easy to service. This
filter can be serviced from the outside by removing the
filter access panel. A 1" washable filter and 2" pleated
filter are also available as optional accessories. The
internal filter brackets are adjustable to accommodate
the 2" filter by bending two tabs down on each side of
the filter support bracket.

FRESH AIR INTAKE

All units are built with fresh air inlet slots punched in
the service door.

If the unit is equipped with a fresh air damper
assembly, the assembly is shipped already attached
to the unit. The damper blade is locked in the
closed position. To allow the damper to operate, the
maximum and minimum blade position stops must be
installed (see Figure 1).

All capacity, efficiency and cost of operation
information is based upon the fresh air blank-off plate
in place and is recommended for maximum energy
efficiency.

The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.

CONDENSATE DRAIN

A plastic drain hose extends from the drain pan at
the top of the unit down to the unit base. There are
openings in the unit base for the drain hose to pass
through. In the event the drain hose is connected to
a drain system of some type, it must be an open or
vented type system to assure proper drainage.

FIGURE 1

Fresh Air Damper

BLADE IS LOCKED CLOSED
FOR SHIPPING

MIS-938

Manual 2100-654C
Page 5 of 34

INSTALLATION

WALL MOUNTING INFORMATION

1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figures
3A – D.

2. On wood frame walls, the wall construction must
be strong and rigid enough to carry the weight of
the unit without transmitting any unit vibration.

3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the
weight of the installed unit.

NOTE: Before mounting the heat pump unit,

consideration should be given to the
condensate removal from the outdoor coil
when in heating mode. The unit must be
mounted high enough above grade to ensure
that ice will not build up under the unit and
come into contact with the base of the unit. If
allowed, this could cause damage to the coil
and other base components. Also, be sure
there are no air obstructions to the sides or
front of the unit, such as bushes or fences,
that would inhibit condenser airflow.

MOUNTING THE UNIT

1. These units are secured by wall mounting brackets
which secure the unit to the outside wall surface at
both sides. A bottom mounting bracket, attached
to skid for shipping, is provided for ease of
installation, but is not required.

2. The unit itself is suitable for 0" clearance, but the
supply air duct flange and the first 3' of supply
air duct require a minimum of 1/4" clearance to
combustible material for model series W30, W36,
W42, W48 and W60. However, it is generally
recommended that a 1" clearance is used for
ease of installation and maintaining the required
clearance to combustible material. See Figures 3A
– D for details on opening sizes.

Minimum Clearances Required to
Combustible Materials

MODELS

W18H/W24H 0" 0"

W30H/W36H 1/4" 0"

W42H/W48H/W60H 1/4" 0"

SUPPLY AIR DUCT

FIRST 3'

CABINET

Clearances Required for Service Access
and Adequate Condenser Airflow

MODELS LEFT SIDE RIGHT SIDE

W18H, W24H, W30H, W36H 15" 20"

W42H, W48H, W60H 20" 20"

3. Locate and mark lag bolt locations and bottom
mounting bracket location (see Figures 3A – D).

4. Mount bottom mounting bracket.

5. Hook top rain flashing, attached to front - right of
supply flange for shipping, under back bend of top.

6. Position unit in opening and secure with fasteners
sufficient for the application such as 5/16" lag/
anchor/carriage bolts; use 7/8" diameter flat washers
on the bolts.

7. Secure rain flashing to wall and caulk across entire
length of top (see Figures 3A – D).

8. For additional mounting rigidity, the return air
and supply air frames or collars can be drilled
and screwed or welded to the structural wall itself
(depending upon wall construction). Be sure to
observe required clearance if combustible wall.

9. On side-by-side installations, maintain a minimum
of 20" clearance on right side to allow access to
control panel and heat strips, and to allow proper
airflow to the outdoor coil. Additional clearance
may be required to meet local or national codes.

WARNING

Failure to provide the 1/4" clearance between
the supply duct and a combustible surface

for the rst 3' of duct can result in re causing
damage, injury or death.

Manual 2100-654C
Page 6 of 34

NOTE: Refer to Figures 2 – 7 for dimensions and
various mounting configurations.

FIGURE 2

Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal)

WIDTH

DEPTH

MODEL

W18HA
W24HA

W30HA
W36HA

W42HA
W48HA

W60HA 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

(W)

33.300 17.125 74.563 7.88 19.88 11.88 19.88 35.00 10.88 29.75 20.56 30.75 32.06 33.25 31.00 2.63 34.13 26.06 10.55 4.19 12.00 9.00

38.200 17.125 74.563 7.88 27.88 13.88 27.88 40.00 10.88 29.75 17.93 30.75 32.75 33.25 31.00 2.75 39.13 26.75 9.14 4.19 12.00 9.00

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

HEIGHT

(D)

All dimensions are in inches. Dimensional drawings are not to scale.

SUPPLY RETURN

(H)

A B C B E F G I J K L M N O P Q R S T

5.88

Built In

Rain Hood

W

Hood for CRV and
ECON models
only

Filter Access Panel

1

Standard

F

G

Ventilation Air

Condenser

flush vent
door for non­ERV/CRV
Econ.
models

Air Outlet

4° Pitch

Heater

Access

Panel

Electric

Heat

C. Breaker/
Disconnect

Access Panel

(Lockable)

3"

7.00

Low Voltage

Electrical
Entrance

High Voltage

Electrical
Entrance

Front View

D

1.250

Cond.

Air

Inlet

Side View

2.13

J

Drain

Side Wall

A

Mounting

Brackets

(Built In)

I

Top Rain

Flashing
Shipping
Location

Optional

C

Electrical

H

Entrances

K

L

M

P

N

Supply Air Opening

Return Air Opening

Q

E
O

B

Back View

.44

Bottom Installation
Bracket

MIS-3796

R

S

S

S

S

S

T

Manual 2100-654C
Page 7 of 34

12"

12"

12"

12"

12"

20"

20"

8"

20

1

2

"

12"

3

13

16

"

2"

2"

7

1

16

" 7

1

16

"

5"

1"

3"

4"

Typ.

3

1

8

"

4"

Typ.

7

8

"

9"

NOTES:

WALL STRUCTURE

ENTIRE LENGTH OF TOP.

TOP

WALL

OF CAULKING ALONG

PANEL

FOAM AIR SEAL

DUCT

RAIN FLASHING

HEATER ACCESS

MIS-3157 A

Wall Opening and Hole Location View Right Side View

RETURN AIR

TOP FLASHING AT TIME OF INSTALLATION.

OPENING

THE SIDE MOUNTING FLANGES AND UNDER

SEAL WITH BEAD

IT IS RECOMMENDED THAT A BEAD OF

SILICONE CAULKING BE PLACED BEHIND

SUPPLY AIR

SUPPLIED

Return Opening

Supply Opening

J**A UNIT SHOWN, J**L UNIT

CONTROLS AND HEATER ACCESS

IS ON OPPOSITE (LEFT) SIDE.

FIGURE 3A

W18H, W24H

Mounting Instructions

Manual 2100-654C
Page 8 of 34

28"

AC

D

C

12"

12"

12"

12"

12"

B

E

14"

4

11

16

"

4

11

16

"

4"

Typ.

2

7

8

"

7

8

"

7

8

"

4"

Typ.

3

1

8

"

9

1

16

"

4

7

8

"

NOTES:

DUCT

HEATER ACCESS

1/4" CLEARANCE ON ALL

ENTIRE LENGTH OF TOP.

TOP

OF CAULKING ALONG

PANEL

FOAM AIR SEAL

WALL STRUCTURE

TOP FLASHING AT TIME OF INSTALLATION.

FOUR SIDES OF SUPPLY

RAIN FLASHING

FROM COMBUSTABLE

MATERIALS

SUPPLY AIR

SUPPLIED

SILICONE CAULKING BE PLACED BEHIND

RETURN AIR

Right Side View

MIS-3158 A

AIR DUCT IS REQUIRED

OPENING

THE SIDE MOUNTING FLANGES AND UNDER

SEAL WITH BEAD

IT IS RECOMMENDED THAT A BEAD OF

WALL

Wall Opening and Hole Location View

Return Opening

16 7/84 7/164 5/89 7/829 7/8

17 5/83 11/165 3/88 3/828 3/8

EDCBA

COMBUSTIBLE MATERIALS

RECOMMENDED 1" CLEARANCE FROM

REQUIRED DIMENSIONS TO MAINTAIN

COMBUSTIBLE MATERIALS

1/4" MIN. CLEARANCE FROM

REQUIRED DIMENSIONS TO MAINTAIN

Supply Opening

J*R UNIT SHOWN, J*L UNIT

CONTROLS AND HEATER ACCESS

IS ON OPPOSITE (LEFT) SIDE.

FIGURE 3B

W30H, W36H

Mounting Instructions

Manual 2100-654C
Page 9 of 34

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 BEAD OF

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 OF INSTALLATION.

TOP.

PANEL

HEATER ACCESS

FOUR SIDES OF SUPPLY

AIR DUCT IS REQUIRED

FROM COMBUSTABLE

WALL

1/4" CLEARANCE ON ALL

MATERIALS

Supply Opening

FOAM AIR SEAL

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

FIGURE 3C

W42H, W48H

Manual 2100-654C
Page 10 of 34

Mounting Instructions

D

16"

16"

16"

16"

16"

2

"6

8

" 5

8 97

"

1"

3"

Typ.

1

4"

4"

Typ.

6

1

2

"

30"

E

16"

A CC

"

7

8

3

B

"

8

7

1

1

2

"6

1 1/430 1/2

1/4" CLEARANCE ON ALL

SUPPLIED

FOAM AIR SEAL

A

Supply Opening

SILICONE CAULKING BE PLACED BEHIND

DUCT

FOUR SIDES OF SUPPLY

FROM COMBUSTABLE

1/4" MIN. CLEARANCE FROM

COMBUSTIBLE MATERIALS

REQUIRED DIMENSIONS TO MAINTAIN

OPENING

COMBUSTIBLE MATERIALS

B D E

PANEL

AIR DUCT IS REQUIRED

32

10 1/2

Right Side View

SUPPLY AIR

RECOMMENDED 1" CLEARANCE FROM

MIS-3789

RAIN FLASHING

REQUIRED DIMENSIONS TO MAINTAIN

12

TOP.

MATERIALS

5 1/2

WALL STRUCTURE

2

6 1/4

29

29 3/4

IT IS RECOMMENDED THAT A BEAD OF

THE SIDE MOUNTING FLANGES AND UNDER

WALL

C

Wall Opening and Hole Location View

NOTES:

TOP FLASHING AT TIME OF INSTALLATION.

HEATER ACCESS

RETURN AIR

SEAL WITH BEAD

OF CAULKING ALONG

ENTIRE LENGTH OF

TOP

Return Opening

W60H

FIGURE 3D

Mounting Instructions

Manual 2100-654C
Page 11 of 34