Bard W48A12 User manual

Manual 2100-515B
Page 1 of 23
INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGE AIR CONDITIONERS
MODELS
W48A12 W48L12
W60A12 W60L12
W48A13 W48L13
W60A13 W60L13
W70A13 W70L13
Manual : 2100-515B
Supersedes: 2100-515A
File: Volume III Tab 16
Date: 12-15-11
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.

Manual 2100-515B
Page 2 of 23
Contents
Figures
Figure 1 Unit Dimensions...................................... 7
Figure 2 Unit Dimensions...................................... 8
Figure 3 Unit Dimensions...................................... 9
Figure 4 Unit Dimensions.................................... 10
Figure 5 Unit Dimensions.....................................11
Figure 6 Unit Dimensions.....................................11
Figure 7 Wall Mounting Instructions.................... 12
Figure 8 Wall Mounting Instructions.................... 13
Figure 9 Electric Heat Clearance ........................ 14
Figure 10 Wall Mounting Installations ................... 15
Figure 11 Wall Mounting Installations ................... 15
Figure 12 Common Wall Mounting Installations.... 16
Figure 13 Fan Blade Setting ................................. 21
Tables
Table 1 Maximum ESP Electric Heat Only.......... 6
Table 2 Fan Blade Dimensions.......................... 21
Table 3 Rated CFM & ESP ................................ 21
Table 4 Indoor Blower Performance .................. 21
Table 5 Cooling Pressure .................................. 22
Table 6 Electrical Specifications W**A/L ........... 22
Table 7 Optional Accessories ............................ 23
Table 8 Electric Heat ......................................... 23
Getting Other Information and Publications 3
Wall Mount General Information
Wall Mount Model Nomenclature ............................ 4
Shipping Damage .................................................... 4
General ................................................................ 4
Duct Work................................................................ 5
Condensate Drain.................................................... 5
Filters ................................................................ 5
Installation Instructions
Wall Mounting Information....................................... 6
Mounting the Unit .................................................... 6
Clearances Required............................................... 6
Wiring – Main Power ............................................. 17
Wiring – Low Voltage Wiring ................................. 17
Start Up — R-410A
General .............................................................. 18
Topping Off System Charge................................... 18
Safety Practices..................................................... 18
Important Installer Note ......................................... 19
High & Low Pressure Switch ................................. 19
Three Phase Scroll Compressor............................ 19
Phase Monitor ....................................................... 19
Condenser Fan Operation ..................................... 19
Service Hints ......................................................... 19
Sequence of Operation.......................................... 20
Compressor Control Module.................................. 20
Adjustments ........................................................... 20
Pressure Service Ports.......................................... 20
Troubleshooting
Fan Blade Setting Dimensions .............................. 21
Removal of Fan Shroud......................................... 21
Refrigerant Charge ................................................ 21

Manual 2100-515B
Page 3 of 23
GETTING OTHER INFORMATION AND PUBLICATIONS
These publications can help you install the air
conditioner or heat pump. You can usually find 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/NFPA90B
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 2100-515B
Page 4 of 23
WALL MOUNT GENERAL INFORMATION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
W48 A 1 2 A 10 B X X X X A
NOTE: Vent option B is without exhaust capability. May require separate field supplied barometric relief in 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.
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.
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.
KW
MODELNUMBER CONTROLMODULES
(SeeSpec.SheetS3397)
VOLTS & PHASE
A - 230/208/60/1
REVISIONS
VENTILATIONOPTIONS
B - Blank-offPlate
FILTEROPTIONS
X - OneInchThrowaway(Standard)(W48A/L12&W60A/L12)
W - OneInchWashable(W48A/L12&W60A/L12)
P - TwoInchPleated(W48A/L12&W60A/L12)
N - NoFilter(W48A/L13&W60A/L13)
COLOROPTIONS
X - Beige(Standard)
1 - White
2 - MesaTan
4 - BuckeyeGray
5 - DesertBrown
8 - DarkBronze
A - Aluminum
S - StainlessSteel
COILOPTIONS
X - Standard
1 - PhenolicCoatedEvaporator
2 - PhenolicCoatedCondenser
3 - PhenolicCoatedEvaporator
andCondenser
OUTLETOPTIONS
X -Front(Standard)
CAPACITY
48 - 4Ton
60 - 5Ton
70 - 6Ton
A - AirConditioner
L - LeftHandAirConditioner
2- 2Ton AirOpeningson5 Ton Cabinet
3- 3 Ton Air Openings on5TonCabinet

Manual 2100-515B
Page 5 of 23
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.
Refer to Maximum ESP of operation Electric Heat
Table.
Design the duct work according to methods given by the
AirConditioning 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
transmissiontoaminimum.
For model series W48, W60 and W70, a 1/4 inch
clearance to combustible material for the first three feet
of duct attached to the outlet air frame is required. See
Wall Mounting Instructions and Figures for further
details.
Ducts through the walls must be insulated and all joints
taped or sealed to prevent air or moisture entering the
wallcavity.
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
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.
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.
FILTERS
W48A12, W48L12 & W60A12, W60L12 ONLY
A 1-inch throw away filter is supplied with each unit.
The filter slides into position making it easy to service.
This filter can be serviced from the outside by removing
the service door. A 1-inch washable filter and a 2-inch
pleated filter are also available as optional accessories.
The internal filter brackets are adjustable to
accommodate the 2-inch filter by bending the metal tabs
holding the 1-inch filter down. There are two tabs on
each side of the filter.
NOTE: W48A13, W48L13, W60A13, W60L13 and
W70A13, W70L13 models require the use of a
return air filter grille.

Manual 2100-515B
Page 6 of 23
sseccAecivreSrofderiuqeRsecnaraelC wolfriAresnednoCetauqedAdna SLEDOM EDISTFEL EDISTHGIR
A07W,A06W,A84W "02 "02
L07W,L06W,L84W "02 "02
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 Specification S3397 & W**L Specification S3400
and Specification Sheet S3409 for 6-Ton W**A / W**L.
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 1 or 2.
Figure 1 is for models W48A13 and W60A13.
Figure 2 is for models W48A12 and W60A13.
Figure 3 is for models W48L13 and W60L13.
Figure 4 is for models W48L12 and W60L12
Figure 5 is for model W70A13
Figure 6 is for model W70L13
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.
W48A12, W48L12 & W60A12, W60L12 ONLY
These units are equipped with adjustable return and
supply air flanges. The flanges are adjustable side to side
in 1" increments. This allows these units to be adjusted
so that in side by side applications these units can replace
two 2 Ton units using the same wall openings.
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 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 flange and the first 3 feet of supply air
duct require a minimum of 1/4 inch clearance to
combustible material. If a combustible wall use a
minimum of 30½" x 10½" dimensions for sizing.
However, it is generally recommended that a 1 inch
clearance is used for ease of installation and maintaining
the required clearance to combustible material. The
supply air opening would then be 32" x 12".
3. Locate and mark lag bolt locations and bottom
mounting bracket location.
4. Mount bottom mounting bracket.
5. Hook top rain flashing under back bend of top. Top rain
flashing is shipped secured to the right side of the back.
6. Position unit in opening and secure with 5/16 lag bolts;
use 7/8 inch diameter flat washers on the lag bolts.
7. Secure rain flashing to wall and caulk across entire
length of top.
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
airflow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
WARNING
Fire hazard can result if 1/4 inch clearance to
combustible materials for supply air duct is
not maintained.
WARNING
Failure to provide the 1/4 inch clearance
between the supply duct and a combustible
surface for the first 3 feet of duct can result in
fire causing damage, injury or death.
TABLE 1
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
SLEDOMPSE
-31A06W YLNO
-31L06W YLNO
-31A07W YLNO
-31L07W YLNO
50A 01A 01A 01A 4.3.3.3.
VALUES SHOWN ARE FOR UNITS EQUIPPED WITH
STANDARD 1" THROWAWAY FILTERS OR 1" WASHABLE
FILTERS. DERATE ESP BY .15 FOR 2" PLEATED FILTERS.

Manual 2100-515B
Page 7 of 23
1.88
16.00 16.00 16.00 16.00 16.00
43.88
43.00.44
27.88
23.87
32.50
34.75
37.13
40.63
43.63
7.88
18.00
13.88
43.00
32.69
84.88
42.00
13.50
31.50
7.06
22.25
3.31 4.56
10.0
11.0
3.25
Side Wall
Back View
Ventilation Air
Supply
Air Opening
Bracket
Installation
Return
Air Opening
Electric
Heat
Electrical
Drain
Built In Slope Top 2° Pitch
Panel
(Built In)
Heater
Access
Circuit Breaker
Disconnect Access
Panel (Lockable)
Entrances
Mounting Brackets
Entrances
Condenser Airflow
is Blowthrough on
All Models
Front View
Low Voltage
Right Side View
Electrical
Bottom
Electrical
Entrances
MIS-2610
FIGURE 1
UNITDIMENSIONS
W48A13 & W60A13

Manual 2100-515B
Page 8 of 23
11.0
16.00 16.00 16.00 16.00 16.00
43.88
.44
3.25
19.88
23.87
32.50
34.75
37.13
40.63
43.63
7.88
20.50 11.88 42.25
32.69
84.88
42.00
13.50
31.50
1.88
From 11.0" to
3.31
22.25
4.56
10.0
6.5" each side
Adjustable
43.00
Back View
Filter Access
Side Wall
Mounting Brackets
Air Opening
Supply
Installation
Bracket
Ventilation Air
Air Opening
Return
(Built In)
Heat
Electric
Drain
Right Side View
Top 2° Pitch Built In Slope
Panel
Access
Heater
Panel (Lockable)
Disconnect Access
Circuit Breaker
Entrances
Entrances
Electrical
All Models
is Blowthrough on
Front View
Low Voltage
Condenser Airflow
Door
Electrical
Bottom
Electrical
Entrances
MIS-2609
FIGURE 2
UNITDIMENSIONS
W48A12 & W60A12

Manual 2100-515B
Page 9 of 23
22.25
13.50 31.50
7.88
18.00
13.88 43.00
32.81
84.88
23.88
32.50
40.63
34.75
43.63
3.31 4.56
27.88 43.00 43.88
1.88
16.00 16.00
16.00 16.00
16.00
42.00
10.00 3.25
11.00
37.13
7.06 .44
Front View
Air Opening
Supply
Left Side View
Installation
Air Opening
Return
Heat Electric
Top 2° Pitch Built In Slope
Bracket
Panel
Access
Heater
Circuit Breaker
Panel (Lockable)
Disconnect Access
Entrances Entrances
Condenser Airflow
All Models
is Blowthrough on
Ventilation Air
Electrical
Low Voltage
(Built In)
Back View
Drain
Mounting Brackets
Side Wall
Electrical
Bottom
Electrical
Entrances
MIS-2611
FIGURE 3
UNITDIMENSIONS
W48L13 & W60L13

Manual 2100-515B
Page 10 of 23
22.25
13.50 31.50
32.81
84.88
23.88
32.50
40.63
34.75
43.63
3.31 4.56
43.00 43.88
1.88
16.00 16.00
16.00 16.00
16.00
42.00
10.00 3.25
11.00
37.13
.44
6.5" each side
Adjustable
from 11.0" to
42.25
20.50
7.88
11.88
19.88
Left Side View
MIS-2612
Air Opening
Supply
Electrical
Entrances
Air Opening
Return
Heat Electric
Top 2° Pitch Built In Slope
Panel
Access
Heater
Circuit Breaker
Panel (Lockable)
Disconnect Access
Entrances Entrances
Condenser Airflow
All Models
is Blowthrough on
Ventilation Air
Electrical
Low Voltage
Front View
(Built In)
Back View
Drain
Mounting Brackets
Side Wall
Bracket
Installation
Electrical
Bottom
Filter Access
Door
FIGURE 4
UNITDIMENSIONS
W48L12 & W60L12

Manual 2100-515B
Page 11 of 23
21.00
21.00
16.00
16.00
16.00
43.88
43.00.44 27.88
7.88
13.88
42.00
13.50
7.06
22.25
3.31
4.56
10.0
11.0
3.25
42.70
94.87
33.87
42.43
44.69
47.13
50.62
53.62
1.88
2.13
17.94
53.06
MIS-2670
Air Opening
Supply
Electrical
Entrances
Air Opening
Return
Heat
Electric Top 2° Pitch
Built In Slope
Panel
Access
Heater
Circuit Breaker
Panel (Lockable)
Disconnect Access
Entrances
Entrances
Condenser Airflow
All Models
is Blowthrough on
Ventilation Air
Electrical
Low Voltage
Front View Right Side View
(Built In)
Back View
Drain
Mounting Brackets
Side Wall
Bracket
Installation
Electrical
Bottom
Filter Access
Door
94.87
2.13
7.87
17.94
13.88
53.06
42.70
13.50
33.87
42.43
44.69
47.13
50.62
53.62
10.00
11.00
4.56
3.25
3.31
22.25
16.00
16.00
16.00
21.00
21.00
27.88
43.00
43.88
.44 7.06 42.00
Bracket
Front View
Installation
Supply
Air Opening
Return
Air Opening
Electric
Heat
MIS-2671
Built In Slope
Top 2° Pitch
Panel
Heater
Access
Electrical
Disconnect Access
Panel (Lockable)
Entrances
Entrances
Condenser Airflow
is Blowthrough on
All Models
(Built In)
Low Voltage
Electrical
Ventilation Air
Back View
Side Wall
Mounting Brackets
Circuit Breaker
Drain
Entrances
Electrical
Bottom
Filter Access
Door
Left Side View
FIGURE 5
UNIT DIMENSIONS — W70A13
FIGURE 6
UNIT DIMENSIONS — W70L13

Manual 2100-515B
Page 12 of 23
FIGURE 7
W48A13, W60A13, W48L13, W60L13, W70A13
11 11
1
, W70L13
11 11
1
MOUNTINGINSTRUCTIONS
6
1 2
" 6
1
2
"2
1 8
"
7 8
"
3
1 8
"
4"
Typ.
4"
Typ.
1"3"
16" 16" 16" 16" 16"
1
7 8
"
A CC
B E
14"
D
28"
7
1 2
"
TOP
B
1/4" CLEARANCE ON ALL
SUPPLIED
FOAM AIR SEAL
1
C
FROM COMBUSTABLE
DUCT
REQUIRED DIMENSIONS TO MAINTAIN
D
HEATER ACCESS MATERIALS
Wall Opening and Hole Location View
1/4"MIN. CLEARANCEFROM
E
AIR DUCT IS REQUIRED
NOTES:
RAIN FLASHING
FOUR SIDES OF SUPPLY
REQUIRED DIMENSIONS TO MAINTAIN
IT IS RECOMMENDED THAT A BEAD OF TOP FLASHING AT TIME OF INSTALLATION.
COMBUSTIBLE MATERIALS
THE SIDE MOUNTING FLANGES AND UNDER
RETURN AIR OPENING
SUPPLY AIR
WALLSTRUCTURE
COMBUSTIBLE MATERIALS
PANEL
Dimension is 21" on W70A and W70L Units.
SILICONE CAULKING BE PLACED BEHIND
A
Right Side View
TOP.
RECOMMENDED 1" CLEARANCE FROM
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
W**A UNIT SHOWN, W**L UNIT CONTROLS AND HEATER ACCESS IS ON OPPOSITE (LEFT) SIDE.
Supply Opening
Return Opening
1 1/4 17 5/8
30 10 6 1/2 2 16 7/8
28 1/2 8 1/2
MIS-1349 A
1
1
7 1/4

Manual 2100-515B
Page 13 of 23
FIGURE 8
W48A12, W60A12, W48L12, W60L12
MOUNTINGINSTRUCTIONS
6
1 2
"6
1 2
"2
1 8
"
7 8
"
3
1 8
"
4"
Typ.
4"
Typ.
1"3"
16" 16" 16" 16" 16"
1
7 8
"
A
B
DC
11
1 2
"
20"
C
E
12.000
TOP
RETURN AIR OPENING
DUCT
REQUIRED DIMENSIONS TO MAINTAIN 1/4"MIN. CLEARANCEFROM COMBUSTIBLE MATERIALS
REQUIRED DIMENSIONS TO MAINTAIN RECOMMENDED 1" CLEARANCE FROM COMBUSTIBLE MATERIALS
AB C DE
20 1/2 8 1/2 1 20 1/4
22 10 1 3/4 19 1/2
NOTES:
SUPPLY AIR
Wall Opening and Hole Location View Right Side View
TOP FLASHING AT TIME OF INSTALLATION. SILICONE CAULKING BE PLACED BEHIND IT IS RECOMMENDED THAT A BEAD OF
MIS-1444 A
THE SIDE MOUNTING FLANGES AND UNDER
TOP.
WALLSTRUCTURE
FOUR SIDES OF SUPPLY AIR DUCT IS REQUIRED FROM COMBUSTABLE 1/4" CLEARANCEON ALL MATERIALS
HEATER ACCESS
PANEL
FOAM AIR SEAL
RAIN FLASHING SUPPLIED
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
W**A UNIT SHOWN, W**L UNIT CONTROLS AND HEATER ACCESS IS ON OPPOSITE (LEFT) SIDE.
Return Opening
Supply Opening
Adjustable
side-to-side
for locating
flanges on
unit

Manual 2100-515B
Page 14 of 23
FIGURE 9
ELECTRICHEATCLEARANCE
W48A13, W48L13, W60A13, W60L13, W70A13, W70L13
WARNING
A minimum of 1/4 inch clearance must be maintained between
the supply air duct and combustible materials. This is required
for the first 3 feet of ducting.
It is important to insure that the 1/4 inch minimum spacing is
maintained at all points.
Failure to do this could result in overheating the combustible
material and may result in a fire causing damage, injury or death.
SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR
WALL MOUNTED UNIT SHOWING 1/4 INCH
CLEARANCE TO COMBUSTIBLE SURFACES.

Manual 2100-515B
Page 15 of 23
FIGURE 10
WALLMOUNTINGINSTRUCTIONS
FIGURE 11
WALLMOUNTINGINSTRUCTIONS
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
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
I
A
C
K
E + 1.000
B
1.000
RETURN DUCT
L
2 x 6
PLATE OF WALL
ATTACH TO BOTTOM
1.000" CLEARANCE
C
STRUCTURAL STEEL
OVER FRAME
2 x 4'S, 2 x 6'S &/OR
EXTERIOR FINISH WALL
OPENING
1.000" CLEARANCE
OPENING
SUPPLY DUCT
INTERIOR FINISHED WALL
ATTACH TO TOP
FRAMING MATERIAL
PLATE OF WALL
OVER FRAME
IF REQUIRED
THIS STRUCTURAL MEMBER
LOCATED TO MATCH STUD
SPACING FOR REST OF WALL.
A SECOND MEMBER MAY BE
REQUIRED FOR SOME WALLS.
IF REQUIRED
ALL AROUND DUCT
ALL AROUND DUCT
SEE UNIT DIMENSIONS, FIGURE 2,
FOR ACTUAL DIMENSIONS.
MIS-549 A
SEEFIGURE 3 – MOUNTING INSTRUCTIONS

Manual 2100-515B
Page 16 of 23
FIGURE 12
COMMONWALL MOUNTINGINSTALLATIONS
LOWERED
RAISED FLOOR
RAFTERS
SUPPLY AIR
CEILING SURFACE
WALL SLEEVE
RETURN AIR
CLOSET WALL
GRILLE
FLASHING
RETURN AIR
FLASHING
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
SUPPLY DUCT MAY BE LOCATED IN AN ATTIC
SURFACE
RAFTERS
FINISHED CEILING
SUPPLY AIR DUCT
WALL
OPENING W/ GRILLE
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
CEILING
RAIN
RETURN AIR
SLEEVE
WALL
SUPPLY AIR DUCT
RAFTERS
RAFTERS
RETURN AIR
OPENING W/ GRILLE
RAIN
FALSE WALL INSTALLATION
DUCTED SUPPLY
GRILLE
OUTSIDE
SPACE
FALSE WALL
RETURN AIR GRILLE
OUTSIDE
OR BELOW CEILING RAFTERS AS SHOWN
FINISHED CEILING SURFACE
RAIN
FLASHING
RAIN
FLASHING
RETURN AT UNITNO DUCT
WALL
SUPPLY AIR DUCT
CLOSET INSTALLATION
RETURN AIR
FINISHED
FINISHED CEILING SURFACE
MIS-550 B
FREE AIR FLOW
OUTSIDE
WALL
OUTSIDE
WALL
SUPPLY AIR DUCT
W/ GRILLE

Manual 2100-515B
Page 17 of 23
WIRING – MAIN POWER
Refer to the unit rating plate for wire sizing information
and maximum fuse or “HACR” type circuit breaker
size. Each outdoor unit is marked with a “Minimum
Circuit Ampacity”. This means that the field wiring
used must be sized to carry that amount of current.
Depending on the installed KW of electric heat, there
may be two field 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 field
power circuits required for the various models with
heaters.
The unit rating plate lists a “Maximum Time Delay
Relay Fuse” or “HACR” type 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 6 for Electrical Specifications.
WIRING – LOW VOLTAGE WIRING
230/208V, 1 phase and 3 phase equipment 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
operatingcondition).
For wiring size and connections, refer to Wiring Manual
2100-507.

Manual 2100-515B
Page 18 of 23
START UP
THESE UNITS REQUIRE R-410A
REFRIGERANT AND POLYOL
ESTER OIL.
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 significant 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 insure 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 flammable.
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 fill 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 significantly
at warmer temperatures. Once a cylinder or line is
full of liquid, any further rise in temperature will
cause it to burst.
WARNING
Failure to conform to these practices
could lead to damage, injury or death.

Manual 2100-515B
Page 19 of 23
START UP (Continued)
IMPORTANT INSTALLER NOTE
For improved start up performance wash the indoor coil
with a dish washing detergent.
HIGH & LOW PRESSURE SWITCH
AllW**A/W**L wall mounted air conditionerseries
models are supplied with a remote reset for the high and
low pressure switch. If tripped, this pressure switch may
be reset by turning the thermostat off then back on again.
THREE PHASE SCROLL COMPRESSOR
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. Since
there is a 50-50 chance of connecting power in such a
way as to cause rotation in the reverse direction,
verification of proper rotation must be made.
Verification 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.
Verification 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 one 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 several minutes, the compressor’s internal
protector will trip.
All three phase compressors are wired identically
internally. As a result, once the correct phasing is
determined for a specific 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 3 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.
CONDENSER FAN OPERATION
The condenser fan motor on 230/208 volt, one and three
phase, 60 HZ units is a two-speed motor that comes
factory wired on high speed for peak performance. If
ambient conditions permit, it can be reconnected to low
speed (red wire) for lower sound level. See wiring
diagram.
50 HZ models must have fan wired on low speed.
These models are factory wired on low speed.
SERVICE HINTS
1. Caution owner/operator to maintain clean air filters
at all times. Also, not to needlessly close off supply
and return air registers. This reduces airflow
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 airflow circulation is essential.

Manual 2100-515B
Page 20 of 23
SEQUENCE OF OPERATION
COOLING – 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. On a call for
heating, circuit R-W1 make at the thermostat pulling in
heat contact for the strip heat and blower operation. On
a call for second stage heat, R-W2 makes bringing on
second heat contactor, if so equipped.
COMPRESSOR CONTROL MODULE
The compressor control module is standard on all
models covered by this manual. The compressor control
module is an anti-short cycle/lockout timer with high
and low pressure switch monitoring and alarm relay
output.
Adjustable Delay On Make And Break Timer
On initial power up or anytime power is interrupted to
the unit, the delay on make period begins, which will be
2 minutes plus 10% of the delay on break setting. When
the delay on make is complete and the high pressure
switch and low pressure switch is closed, the compressor
contactor is energized. Upon shutdown, the delay on
break timer starts and prevents restart until the delay on
break and delay on make periods have expired.
During routine operation of the unit with no power
interruptions, the compressor will operate on demand
with no delay.
High Pressure Switch and Lockout Sequence
If the high pressure switch opens, the compressor
contactor will de-energize immediately. The lockout
timer will go into a soft lockout and stay in soft lockout
until the high pressure switch closes and the delay on
break time has expired. If the high pressure switch
opens again in this same operating cycle, the unit will go
into manual lockout condition and the alarm relay circuit
will energize. Recycling the wall thermostat resets the
manual lockout.
Low Pressure Switch, Bypass, and Lockout
Sequence
If the low pressure switch opens for more than 120
seconds, the compressor contactor will de-energize and
go into a soft lockout. Regardless the state of the low
pressure switch, the contactor will reenergize after the
delay on make time delay has expired. If the low
pressure switch remains open, or opens again for longer
than 120 seconds, the unit will go into manual lockout
condition and the alarm relay circuit will energize.
Recycling the wall thermostat resets the manual lockout.
Alarm Relay Output
Alarm terminal is output connection for applications
where alarm relay is employed. This terminal is
powered whenever the compressor is locked out due to
HPC or LPC sequences as described.
NOTE: Both high and low pressure switch controls are
inherently automatic reset devices. The high
pressure switch and low pressure switch cut out
and cut in settings are fixed by specific air
conditioner unit model. The lockout features,
both soft and manual, are a function of the
Compressor Control Module.
ADJUSTMENTS
Adjustable Delay on Make and Delay on Break
Timer
The potentiometer is used to select Delay on Break time
from 30 seconds to 5 minutes. Delay on Make (DOM)
timing on power-up and after power interruptions is
equal to 2 minutes plus 10% of Delay on Break (DOB)
setting:
0.5 minute (30 seconds) DOB = 123 second DOM
1.0 minute (60 seconds) DOB = 126 second DOM
2.0 minute (120 seconds) DOB = 132 second DOM
3.0 minute (180 seconds) DOB = 138 second DOM
4.0 minute (240 seconds) DOB = 144 second DOM
5.0 minute (300 seconds) DOB = 150 second DOM
During routine operation of the unit with no power
interruptions the compressor will operate on demand
with no delay.
Typical Settings for Dual Unit Installation:
Unit 1: DOB set at 2 minutes, and DOM is 132 seconds
Unit 2: DOB set at 4 minutes, and DOM is 144 seconds
PRESSURE SERVICE PORTS
High and low pressure service ports are installed on all
units so that the system operating pressures can be
observed. A pressure table can be found later in the
manual covering all models. It is imperative to match
the correct pressure table to the unit by model number.
See Table 5.