Bard H24A2-A, H42A2-A, H48A2-A, H36A2-A, H60A2-A User Manual

INSTALLATION INSTRUCTIONS

WALL MOUNTED PACKAGED

AIR CONDITIONER

Models:

H24A2-A
H36A2-A
H42A2-A
H48A2-A
H60A2-A

H24L2-A
H36L2-A
H42L2-A
H48L2-A
H60L2-A

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

www.bardhvac.com

Manual : 2100-585C
Supersedes: 2100-585B
Date: 10-22-14

Page 1 of 22

CONTENTS

Getting Other Information and Publications ........... 3

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

Wall Mount Model Nomenclature .............................. 4

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

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

Duct Work .................................................................5

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

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

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

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

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

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

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

Wiring – Main Power ............................................... 14

Wiring – Low Voltage Wiring ................................... 14

Dirty Filter Switch and Relay ................................... 14

Economizer Fail Time Delay Relay ......................... 14

Start Up ..................................................................... 15

General ................................................................... 15

Topping Off System Charge .................................... 15

Safety Practices ...................................................... 15

Important Installer Note ........................................... 15

High Pressure Switch .............................................. 15

Condenser Fan Operation ...................................... 16

Service Hints ........................................................... 16

Sequence of Operation ........................................... 16

Compressor Control Module ................................... 16

Adjustments ............................................................ 16

Pressure Service Ports ........................................... 16

Service ...................................................................... 17

Fan Blade Setting Dimensions ................................ 17

Removal of Fan Shroud .......................................... 17

R410A Refrigerant Charge ......................................17

Figures

Figure 1 Unit Dimensions ...................................... 7

Figure 2A H24 Mounting Instructions ...................... 8

Figure 2B H36 Mounting Instructions ...................... 9

Figure 2C H42, 48, 60 Mounting Instructions ........ 10

Figure 3 Electric Heat Clearance ........................ 11

Figure 4 Wall Mounting Instructions .................... 12

Figure 5 Wall Mounting Instructions .................... 12

Figure 6 Common Wall Mounting Installations .... 13

Figure 7 Fan Blade Setting ................................. 17

Tables

Table 1 Fan Blade Dimensions .......................... 17

Table 2 Cooling Pressure .................................. 18

Table 3A Electrical Specications H**A Series ....19

Table 3B Electrical Specications H**L Series ..... 19

Table 4 Recommended Airow .......................... 20

Table 5 Indoor Blower Performance .................. 20

Table 6 Max ESP of Operation Elec Heat Only . 20

Table 7 Electric Heat .......................................... 21

Table 8 Optional Accessories ............................ 21

Table 9 Vent and Control Options ...................... 22

Manual 2100-585C
Page 2 of 22

GETTING OTHER INFORMATION AND PUBLICATIONS

These publications can help you install the air

conditioner or heat pump. You can usually nd these

at your local library or purchase them directly from the
publisher. Be sure to consult current edition of each
standard.

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

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

of Air Conditioning and Ventilating Systems

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

Heating and Air Conditioning Systems

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

Residential Winter and Summer Air Conditioning

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

Winter and Summer Air Conditioning and Equipment
Selection

FOR MORE INFORMATION, CONTACT
THESE PUBLISHERS:

ACCA Air Conditioning Contractors of America
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: [phone]
Fax: [phone]

ANSI American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: [phone]
Fax: [phone]

ASHRAE American Society of Heating, Refrigeration
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.

Atlanta, GA 30329-2305
Telephone: [phone]
Fax: [phone]

NFPA National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: [phone]
Fax: [phone]

Manual 2100-585C
Page 3 of 22

WALL MOUNT GENERAL INFORMATION

AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE

H 42 A 2 – A 05 Y P X X X J

MODEL SERIES

CAPACITY

24 - 2 Ton
36 - 3 Ton
42 - 3½ Ton
48 - 4 Ton
60 - 5 Ton

A - Right Hand Air Conditioner
L - Left Hand Air Conditioner

VENTILATION OPTIONS

B - Blank-off Plate (No Ventilation)
Y - 100% Economizer Temperature
Z - 100% Economizer Enthalpy

REVISIONS

KW

VOLTS & PHASE

A - 230/208/60/1

SHIPPING DAMAGE

Upon receipt of equipment, the carton should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact
the last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.

GENERAL

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

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

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

These instructions explain the recommended method
to install the air cooled self-contained unit and the
electrical wiring connections to the unit.

CONTROL MODULES

(See Spec. Sheet)

COIL OPTIONS

COLOR OPTIONS

X - Beige (Standard)
1 - White
4 - Buckeye Gray
5 - Desert Brown
6 - Dark Bronze
A - Aluminum
S - Stainless Steel

FILTER OPTIONS

P - 2 inch Pleated MERV 8

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

OUTLET OPTIONS

X - Front (Standard)

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.

Manual 2100-585C
Page 4 of 22

DUCT WORK

FILTERS

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 Table 5 for maximum static pressure available
for duct design.

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 one inch 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.

For the H model series 36-60, a 1/4 inch clearance

to combustible material for the rst three feet of duct

attached to the outlet air frame is required. See Wall
Mounting Instructions and Figures 2A-C and Figure 3
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.

A 2-inch pleated MERV 8 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.

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.

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 inch.

Any grille that meets with 5/8 inch louver criteria
may be used. It is recommended that Bard Return Air
Grille Kit RG2W thru RG5W or RFG2W thru RFG5W
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.

Manual 2100-585C
Page 5 of 22

INSTALLATION

WALL MOUNTING INFORMATION

1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figure 2.

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.

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 inch clearance,

but the supply air duct ange and the rst 3 feet

of supply air duct require a minimum of 1/4 inch
clearance to combustible material for model series
H36,

H42, H48 and H60

. However, it is generally
recommended that a 1-inch clearance is used for
ease of installation and maintaining the required
clearance to combustible material. See Figures
2A-C for details on opening sizes.

Minimum Clearances Required to
Combustible Materials

MODELS

H24A, H24L 0" 0"

H36A, H36L 1/4" 0"

H42A, H42L
H48A, H48L
H60A, H60L

SUPPLY AIR DUCT

FIRST THREE FEET

1/4" 0"

CABINET

WARNING

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

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

Clearances Required for Service Access

and Adequate Condenser Airow

LEFT

MODELS

H24A, H36A 15" 20" 10'

H24L, H36L 20" 15" 10'

H42A, H48A, H60A 20" 20" 10'

H42L, H48L, H60L 20" 20" 10'

NOTE: For side by side installation of two (2) H**A models there

must be 20" between units. This can be reduced to 15" by using

a H**L model (left side compressor and controls) for the left unit
and H**A (right side compressor and controls) for right unit.

RIGHT

SIDE

3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figure 2.

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 inch diameter at washers on the lag

bolts.

7. Secure rain ashing to wall and caulk across entire

length of top. See Figure 2.

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 inches 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.

10.

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 other
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.

SIDE

DISCHARGE

SIDE

Manual 2100-585C
Page 6 of 22

For units with blow through condensers, it is

recommended there be a minimum distance of 10'
between the front of the unit and any barrier or 20'
between the fronts of two opposing (facing) units.

FIGURE 1

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

MODEL

H24A, L 33.300 17.125 70.563 7.88 19.88 11.88 19.88 35.00 11.00 25.75 20.56 26.75 28.06 29.25 27.00 2.63 34.13 22.06 10.55 4.19 12.00 5.00

H36A, L 38.200 17.125 70.563 7.88 27.88 13.88 27.88 40.00 11.00 25.75 17.93 26.75 28.75 29.25 27.00 2.75 39.19 22.75 9.14 4.19 12.00 5.00

H42A, L
H48A, L
H60A, L

WIDTH

DEPTH

(W)

42.075 22.432 84.875 9.88 29.88 15.88 29.88 43.88 13.63 31.66 30.00 32.68 26.94 34.69 32.43 3.37 42.88 23.88 10.00 1.44 16.00 1.88

HEIGHT

(D)

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

H**A
RIGHT
UNIT

5.88

F

G

 Not used when EWM Economizer is installed. Filter access is through the EWM hood.

Filter Access Panel

Ventilation Air

Condenser

Air Outlet

Front View

H**L
LEFT

.44

UNIT

R

S

S

S

S

S

T

Drain

 Not used when EWM Economizer is installed. Filter access is through the EWM hood.

Supply Air Opening

Return Air Opening

Bottom

Installation

Bracket

SUPPLY RETURN

(H)

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

E
O

Supply Air Opening

B

Return Air Opening

Back View

W

Filter Access Panel

Ventilation Air

Condenser

Air Outlet

Front ViewSide View

W

E
O

B

Back View

Built In

Rain Hood

4° Pitch

Heater

Access

Panel

Electric

Heat

C. Breaker/
Disconnect

Access Panel

(Lockable)

Economizer
Air Intake Hood

Economizer

Q

Controls

Standard
flush vent
door for
non-Econ.
models

Side Wall
Mounting
Brackets
(Built In)

Top Rain

Flashing

Shipping

Location

Optional
Electrical
Entrances

P

N

L

M

7"

Low Voltage

Electrical
Entrance

High Voltage

Electrical
Entrance

Built In
Rain Hood
4° Pitch

2.13

A

I

C

H

K

1

J

D

Cond.

Air

Inlet

Side View

D

Cond.

Air

Inlet

2.13

A

I

C

K

J

Drain

C. Breaker/
Disconnect
Access Panel
(Lockable)

Standard flush

Economizer
Air Intake Hood

Low Voltage
Electrical
Entrance

High Voltage
Electrical
Entrance

Side Wall
Mounting

Brackets

(Built In)

Top Rain

Flashing
Shipping
Location

Optional

H

Electrical

Entrances

L

M

Electric
Heat

Heater
Access
Panel

vent door for

non-Econ.

models

Economizer
controls
(opposite side)

7"

P

N

Q

Manual 2100-585C
Page 7 of 22

.44

Bottom Installation
Bracket

MIS-3624

1

5.88

MIS-3625

R

S

S

S

S

S

T

F

G