Bard w17a2 User Manual
INSTALLATION INSTRUCTIONS
WALL MOUNTED
P ACKAGE AIR CONDITIONERS
MODELS
W17A2 W17L2
W18A2 W18L2
W24A2 W24L2
W30A2 W30L2
W36A2 W36L2
W42A2 W42L2
W48A2 W48L2
W60A2 W60L2
W70A2 W70L2
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.
Manual : 2100-581B
Supersedes: 2100-581A
File: Volume III Tab 16
Date: 11-25-13
Manual 2100-581B
Page 1 of 26
Contents
Getting Other Information and Publications 3
Wall Mount General Information
Wall Mount Model Nomenclature
Shipping Damage
General .................................................................4
Duct Work
Filters .................................................................5
Fresh Air Intake
Condensate Drain
Installation Instructions
Wall Mounting Information
Mounting the Unit
Clearances Required
Minimum Clearances
Wiring – Main Power
Wiring – Low Voltage Wiring
Figures
Figure 1 Fresh Air Damper Assembly .....................5
Figure 2 Unit Dimensions .......................................7
Figu r e 3 A Mounting Instructions ...............................8
Figure 3B Mounting Instructions - W17 – 36 ................9
Figure 3C
Figure 4 Electric Heat Clearance ......................... 11
Figure 5 Wall Mounting Instructions .....................12
Figure 6 Wall Mounting Instructions .....................12
Figure 7 Common Wall Mounting Installations .....13
Figure 8 Fan Blade Setting ...................................18
.................................................................5
Mounting Instructions - W42, 48, 60, 70 ....10
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...............................................14
..............................4
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...................................14
Start Up
General ...............................................................15
Topping Off System Charge
Safety Practices
Important Installer Note
High Pressure Switch
Three Phase Scroll Compressor
Phase Monitor
Condenser Fan Operation
Service Hints
Sequence of Operation
Compressor Control Module
Adjustments
Pressure Service Ports
Troubleshooting
Fan Blade Setting Dimensions
R-410A Refrigerant Charge
Removal of Fan Shroud
Tables
Table 1 Fan Blade Dimensions ...........................18
Table 2 Cooling Pressure ....................................19
Table 3 Electrical Specications W**A ................20
Table 4 Electrical Specications W**L ................21
Table 5 Recommended Airow ...........................22
Table 6 Indoor Blower Performance ...................22
Table 7 Maximum ESP Electric Heat Only ..........22
Table 8 Electric Heat ...........................................23
Table 9A Optional Accessories — Right Hand ......24
Table 9B Optional Accessories — Left Hand ............25
Table 10 Vent & Control Options ...........................26
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Manual 2100-581B
Page 2 of 26
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 W arm 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: (202) 483-9370
Fax: (202) 234-4721
ANSI American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: (212) 642-4900
Fax: (212) 302-1286
ASHRAE American Society of Heating, Refrigeration
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: (404) 636-8400
Fax: (404) 321-5478
NFPA National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: (800) 344-3555
Fax: (617) 984-7057
Manual 2100-581B
Page 3 of 26
WALL MOUNT GENERAL INFORMATION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
W 42 A 2 – A 10 X X X X X A
MODEL NUMBER
CAPACITY
17 - 1½ Ton
18 - 1½ Ton
24 - 2 Ton
30 - 2
½ T on
36 - 3 Ton
42 - 3½ Ton
48 - 4 Ton
60 - 5 Ton
70 - 6 Ton
NOTE: Vent options X, B and M are without exhaust capability. May require separate eld supplied barometric relief in building.
A - Right Hand Air Conditioner
L - Left Hand Air Conditioner
VENTILATION OPTIONS
X - Barometric Fresh Air Damper (Standard)
B - Blank-off Plate
M - Motorized Fresh Air Damper
V - Commercial Ventilator - Motorized with Exhaust
R - Energy Recovery Ventilator - Motorized with Exhaust
(See Spec. Sheet S3397)
S - Economizer - S
W - Economizer - Equipment Building
T - Economizer - Equipment Building
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
chool Versions, Enthalpy
, Enthalpy
, DB Temp.
KW
COLOR OPTIONS
X - Beige (Standard)
1 - White
4 - Buckeye Gray
5 - Desert Brown
6 - Dark Bronze
A - Aluminum
S - Stainless Steel
FILTER OPTIONS
X - One Inch Throwaway (Standard)
W - One Inch Washable
P - T wo Inch Pleated
OUTLET OPTIONS
X - Front (Standard)
T - Top Outlet (W30A, W36A Only)
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.
CONTROL MODULES
(See Spec. Sheet S3397)
COIL OPTIONS
X - Standard
1 - Phenolic Coated Evaporator
2 - Phenolic Coated Condenser
3 - Phenolic Coated Evaporator
and Condenser
While these instructions are intended as a general
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.
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 2100-581B
Page 4 of 26
DUCT WORK
FILTERS
All duct work, supply and return, must be properly sized
for the design airow requirement of the equipment.
Air Conditioning Contractors of America (ACCA) is an
excellent guide to proper sizing. All duct work or portions
thereof not in the conditioned space should be properly
insulated in order to both conserve energy and prevent
condensation or moisture damage.
Refer to Maximum ESP of operation Electric Heat Table 7.
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.
Models W17 - W24 as approved for zero inch clearance to
the supply duct. For model series W30, W36, W42, W48,
W60 and W70 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 3
and 4 for further details.
Ducts through the walls must be insulated and all joints taped
or sealed to prevent air or moisture entering the wall cavity.
Some installations may not require any return air duct. A
metallic return air grille is required with installations not
requiring a return air duct. The spacing between louvers on
the grille shall not be larger than 5/8 inch.
Any grille that meets with 5/8 inch louver criteria may be
used. It is recommended that Bard Return Air Grille Kit
RG2 through RG5 or RFG2 through RFG5 be installed
when no return duct is used. Contact distributor or factory
for ordering information. If using a return air lter grille,
lters must be of sufcient size to allow a maximum
velocity of 400 fpm.
A 1-inch 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. A 1-inch washable lter and
2-inch pleated lter are also available as optional
accessories. The internal lter brackets are adjustable
to accommodate the 2-inch 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, efciency and cost of operation
information is based upon the fresh air blank-off plate
in place and is recommended for maximum energy
efciency.
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.
NOTE: If no return air duct is used, applicable installation
codes may limit this cabinet to installation only in a
single story structure.
FIGURE 1
FRESH AIR DAMPER
Manual 2100-581B
Page 5 of 26
INSTALLATION INSTRUCTIONS
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 insure that they are capable of carrying the
weight of the installed unit.
MOUNTING THE UNIT
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.
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
W30, W36, W42, W48, W60 and W70. 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
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.
Clearances Required for Service Access
and Adequate Condenser Airow
LEFT
MODELS
W17A, W18A, W24A, W30A, W36A 15" 20" 10'
W17L, W18L, W24L, W30L, W36L 20" 15" 10'
W42A, W48A, W60A, W70A 20" 20" 10'
W42L, W48L, W60L, W70L 20" 20" 10'
NOTE: For side by side installation of two (2) W**A models there
must be 20" between units. This can be reduced to 15" by using a
W**L model (left side compressor and controls) for the left unit and
WA (right side compressor and controls) for right unit.
See W**A Specication S3397 & W**L Specication S3400.
RIGHT
SIDE
SIDE
DISCHARGE
SIDE
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 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.
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
airow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
Minimum Clearances Required to
Combustible Materials
MODELS
W17A, L / W18A, L / W24A, L 0" 0"
W30A, L / W36A, L 1/4" 0"
W42A, L / W48A, L
W60A, L / W70A, L
SUPPL Y AIR DUCT
FIRST THREE FEET
1/4" 0"
CABINET
Manual 2100-581B
Page 6 of 26
3"
11"
7.88
1.00
31.88
Heat
models.
Electric
Hood for
ECONWMT
MIS-2487 G
1
1
1
Condenser
Filter Access Panel
Front View
Air Outlet
Standard
flush vent
door for
non-ERV/
Econ.
models
Ventilation Air
5.88
F
W
G
Low Voltage
Electrical
Entrance
High Voltage
Side View
Drain
Electrical
Cond.
Air
Inlet
Heater
Access
Panel
4° Pitch
Built In
Rain Hood
Disconnect
Access Panel
(Lockable)
Entrance
C. Breaker/
Hood for ERV and
ECONWMS models
only
C
I
D
J
H
A
2.13
K
Mounting
Supply Air Opening
Side Wall
Brackets
Location
Shipping
Return Air Opening
(Built In)
Optional
Electrical
Entrances
Top Rain
Flashing
Bottom Installation
Bracket
Back View
P
M
O
E
R
S
S
S
S
S
T
.44
N
Q
B
L
FIGURE 2
Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal)
MODEL
W17A, L
W18A, L
W24A, L
W30A, L
W36A, L
W42A, L
W48A, L
W60A, L
W70A, L
WIDTH
DEPTH
(W)
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
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
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.
W**A
RIGHT
UNIT
SUPPLY RETURN
(H)
A B C B E F G I J K L M N O P Q R S T
j Optional top outlet (factory installed only) for W30A and W36A models only.
W**L
LEFT
UNIT
Manual 2100-581B
Page 7 of 26
MIS-3157
WALL STRUCTURE
FOAM AIR SEAL
SUPPLIED
RAIN FLASHING
SEAL WITHBEAD
FIGURE 3A
OF CAULKING ALONG
TOP
ENTIRE LENGTH OF TOP.
WALL
MOUNTING INSTRUCTIONS
W17A2, W17L2, W18A2, W18L2, W24A2, W24L2
"7
1
16
DUCT
SUPPLY AIR
PANEL
HEATER ACCESS
8"
NOTES:
SILICONE CAULKING BE PLACED BEHIND
THE SIDEMOUNTING FLANGES AND UNDER
IT IS RECOMMENDED THAT A BEAD OF
RETURN AIR
OPENING
"
1
2
20
12"
1"
"
1
8
3
4"
Typ.
CONTROLS AND HEATER ACCESS
TOP FLASHING AT TIME OF INSTALLATION.
IS ON OPPOSITE (LEFT) SIDE.
W**A UNIT SHOWN,W**L UNIT
Manual 2100-581B
Page 8 of 26
20"
Supply Opening
"
1
16
7
"
13
16
3
12"
12"
20"
Return Opening
12"
12"
1"
3"
7
12"
4"
Typ.
"
8
2" 2"
Wall Opening andHole Location View Right Side View
5"
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