Bard W12AAA User manual

Page 1 of 21
WALL MOUNTED
PACKAGE AIR CONDITIONERS
Model:
W12AAA
INSTALLATION INSTRUCTIONS
Manual: 2100-618
Supersedes: NEW
File: Tab 16
Date: 06-04-14
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914....Moving ahead just as planned.

Manual 2100-618
Page 2 of 21
CONTENTS
Getting Other Informations and Publications.........3
Wall Mount General Information
Air Conditioner Wall Mount Model Nomenclature.....4
Shipping Damage .....................................................6
General.....................................................................6
Duct Work.................................................................7
Filters........................................................................7
Fresh Air Intake.........................................................7
Condensate Drain.....................................................7
Installation Instructions
Wall Mounting Information ........................................8
Mounting the Unit......................................................8
Wiring – Main Power...............................................12
Wiring – Low Voltage Wiring...................................12
Start Up
Requirements: R-410A............................................17
Important Installer Note...........................................18
Service Hints...........................................................18
High & Low Pressure Switch...................................18
Sequence of Operation...........................................18
Compressor Control Module...................................18
Adjustments............................................................19
Pressure Service Ports...........................................19
Troubleshooting
Fan Blade Setting Dimension .................................20
Refrigerant Charge .................................................20
Pressure Table........................................................21
Optional Field Installed Accessories.......................21
Figures
Figure 1 Unit Dimensions......................................5
Figure 2 Fresh Air Damper....................................7
Figure 3 Mounting Instructions..............................9
Figure 4 Wall Mounting Instructions....................10
Figure 5 Wall Mounting Instructions....................10
Figure 6 Common Wall Mounting Installations.... 11
Figure 7 Low Voltage Wiring –
Basic A/C with Optional Electric Heat
No Economizer or Ventilation
Packages ..............................................13
Figure 8 Low Voltage Wiring –
A/C with Programmable Thermostat.....14
Figure 9 Low Voltage Wiring –
A/C with Non-Programmable
Thermostat............................................15
Figure 10 Low Voltage Wiring –
1-Stage A/C with Optional Electric
Heat with ECONWMStyle
Economizer...........................................16
Figure 11 Fan Blade Setting Dimensions..............20
Tables
Table 1 Electric Heat Table..................................4
Table 2 Electrical Heat Specications..................6
Table 3 Wall Thermostat....................................12
Table 4 Thermostat Wire Size ...........................12
Table 5 Fan Blade Dimensions..........................20
Table 6 Indoor Blower Performance..................20
Table 7 Rated CFM and ESP Recommended
Airow Range........................................20
Table 8 Maximum ESP of Operation
Electric Heat Only .................................20
Table 9 Pressure Table - Cooling.......................21
Table 10 Optional Accessories ............................21

Manual 2100-618
Page 3 of 21
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 of .......... ANSI/NFPA 90A
Air Conditioning and
Ventilating Systems
Standard for Warm Air Heating......... ANSI/NFPA 90B
and Air Conditioning Systems
Load Calculation for .......................... ACCA Manual J
Residential Winter and
Summer Air Conditioning
Duct Design for .................................ACCA Manual D
Residential Winter and
Summer Air Conditioning
and Equipment Selection
For more information, contact these
publishers:
ACCA Air Conditioning Contractors ofAmerica
1712 New Hampshire Avenue NW
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, Refrigerating
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, NE
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 2100-618
Page 4 of 21
TABLE 1
ELECTRIC HEAT TABLE
Models
KW
W12AAAA W12AAAK W12AAAD
240V 208V 120V 240V 220V
Aj
BTU Aj BTU Aj BTU Aj BTU Aj BTU
02 18.3 7,985
03 15.0 12,760 13.0 9,705 15.0 12,760 13.8 10,735
05 20.8 17,540 18.1 13,275
jWith blower watts included
WALL MOUNT GENERAL INFORMATION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
W 12 A A A A 00 X X X X X J
MODEL
NUMBER
REVISIONS
CONTROL
MODULES
X - Standard Low Pressure Switch,
High Pressure Switch, Compressor
Control Module
E - X + LowAmbient Control
J - X + LowAmbient Control and
Alarm Relay
VOLTS & PHASE
A - 230/208/60/1
D - 240/220/50/1
K - 115/60/1
KW
00 - No KW
02 - 2.2 KW
03 - 3.6 KW
05 - 5.0 KW
0Z - Circuit Breaker Only
VENTILATION OPTIONS
X - Barometric FreshAir Damper (Standard)
B - Blank-off Plate
E - Economizer (Internal) - Fully Modulating with Exhaust
V - Commercial Ventilator - Motorized with Exhaust
FILTER OPTIONS
X - 1-Inch Throwaway
(Standard)
W- 1-Inch Washable
P - 2-Inch Pleated
COLOR OPTIONS
X - Beige
1 - White
4 - Buckeye Gray
5 - Desert Brown
8 - Dark Bronze
OUTLET OPTIONS
X - Front
COIL OPTIONS
X - Standard Coils
1 - Phenolic Coated Evaporator
2 - Phenolic Coated Condenser
3 - Phenolic Coated Evaporator and
Condenser
CAPACITY
12 - 1 Ton
AIR CONDITIONER
1 STAGE
EFFICIENCY
A - 10 EER

Manual 2100-618
Page 5 of 21
FIGURE 1
UNIT DIMENSIONS
ENTRANCE
LOW VOLTAGE ENTRANCE
ELECTRICAL
BUILT-IN RAIN
HOOD 2° PITCH
21.88
1.50
48.00
14.63
ACCESS
HEATER & FILTER
VENTILATION
AIR
CONDENSER AIRFLOW
IS BLOW THRU
19.72
19.72
3.88
31.06
20.43
ELECTRICAL
ENTRANCE
SHIPPING LOCATION
OPTIONAL
TOP RAIN FLASHING
DRAIN HOSE
10.00
5.00
30.13
17.00
5.00
32.00
22.25 25.750
2.50
MIS-3599
FRONT VIEW
BACK VIEW
RIGHT SIDE VIEW
NOTE: Maintain a minimum of 20 inches clearance on right side to allow access to control panel and allow proper airow to outdoor
condenser coil. Allow 15 inches on left side.

Manual 2100-618
Page 6 of 21
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
air 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/gain 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.
j Maximum size of the time delay fuse or HACR type circuit breaker for protection of eld wiring conductors.
Based on 75°C copper wire. All wiring must conform to NEC and all local codes.
These “Minimum Circuit Ampacity” values are to be used for sizing the eld power conductors. Refer to the National
Electrical Code (latest revision), article 310 for power conductor sizing.
CAUTION: When more than one eld power conductor circuit is run through one conduit, the conductors must be
derated. Pay special attention to note 8 of table 310 regarding Ampacity Adjustment Factors when more than 3
conductors are in a raceway.
TABLE 2
ELECTRICAL HEAT SPECIFICATIONS
SINGLE CIRCUIT
Models Rated Volts and
Phase
No. Field
Power
Circuits

Minimum
Circuit
Ampacity
j
Maximum
External Fuse
or Circuit
Breaker

Field Power
Wire Size

Ground
Wire Size
W12AAAA0Z
A03
A05 230/208-1 1
1
1
9
20
27
15
20
30
14
12
10
14
12
10
W12AAAK00
K02 115-1 1 117 26 30 30 10 10 10 10
W12AAAD00
D03 240/220-1 1 19 20 15 20 14 12 14 12

Manual 2100-618
Page 7 of 21
DUCT WORK
All duct work, supply and return must be properly sized
for the design air ow requirement of the equipment.
Air Conditioning Contractors of America (ACCA) is
an excellent guide to proper sizing. All duct work or
portions thereof not in the conditioned space should be
properly insulated in order to both conserve energy and
prevent condensation or moisture damage.
Refer to Table 8 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.
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.
It is recommended that on this type of installation that
a lter grille be located in the wall. Filters must be of
sufcient size to allow a maximum velocity of 400 FPM.
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to
installation only in a single story structure.
FILTERS
A one inch throwaway lter is supplied with each unit.
The lter slides into position making it easy to service.
This lter can be serviced from the outside by removing
the service door. A 2-inch pleated lter is also available
as an optional accessory. The internal lter brackets are
adjustable to accommodate the 2-inch lter by bending
the metal tabs holding the 1-inch lter down. There are
two tabs on each side of the lter.
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in the
service panel.
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 2.
All capacity, efciency and cost of operation information
as required for Department of Energy “Energyguide”
Fact Sheets is based upon the fresh air blank-off plate
in place and is recommended for maximum energy
efciency.
The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.
CONDENSATE DRAIN
A plastic drain hose extends from the drain pan at the top
of the unit down to the unit base. There are openings in
the unit base for the drain hose to pass through. In the
event the drain hose is connected to a drain system of
some type, it must be an open or vented type system to
assure proper drainage.
FIGURE 2
FRESH AIR DAMPER

Manual 2100-618
Page 8 of 21
INSTALLATION INSTRUCTIONS
WALL MOUNTING INFORMATION
1. These units are secured by wall mounting brackets
which secure the unit to the outside wall surface at
both sides.
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. Two holes, for the supply and return air openings,
must be cut through the wall as shown in Figure 3.
2. Locate and mark lag bolt locations, if desired. See
Figure 3.
3. Hook top rain ashing under back bend of top. Top
rain ashing is shipped attached to the back of the
unit on the right side.
4. Position unit in opening and secure with 5/16 lag
bolts; use 7/8 inch diameter at washers on the lag
bolts.
5. Secure rain ashing to wall and caulk across entire
length of top. See Figure 3.
6. 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.
7. On side-by-side installations, maintain a minimum
of 20 inches clearance on right side to allow access
to control panel and allow proper airow to outdoor
coil. Additional clearance may be required to meet
local or national codes.

Manual 2100-618
Page 9 of 21
FIGURE 3
MOUNTING INSTRUCTIONS
SEAL WITH BEAD OF CAULKING
ALONG ENTIRE LENGTH OF TOP.
TOP
RAIN FLASHING
SUPPLIED
FOAM AIR SEAL
WALL
WALL STRUCTURE
MIS-3600
FLANGES AND UNDER TOP FLASHING AT TIME OF
INSTALLATION.
SUPPLY AIR DUCT
RETURN AIR
NOTE:
IT IS RECOMMENDED THAT A BEAD OF SILICONE
CAULKING BE PLACED BEHIND THE SIDE MOUNTING
OPENING
WALL OPENING AND HOLE
LOCATION VIEW
7.031
19.719
10.000
7.031
17.0006.969
19.719
5.000
17.000
5.000
2.500

Manual 2100-618
Page 10 of 21
FIGURE 5
WALL MOUNTING INSTRUCTIONS
FIGURE 4
WALL MOUNTING INSTRUCTIONS
SEE FIGURE 3 - MOUNTING INSTRUCTIONS
SEE UNIT DIMENSIONS, FIGURE 1,
FOR ACTUAL DIMENSIONS