Bard WH422D, WH484D, WH603D Installation Instructions Manual
INSTALLATION INSTRUCTIONS
W ALL MOUNTED
P ACKAGE HEA T PUMPS
MODELS:
WH422D
WH484D
WH603D
Bard Manufacturing Company
Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.
Manual : 2100-443
Supersedes:
File: Volume III Tab 17
Date: 10-23-03
© Copyright 2003
Contents
Getting Other Informations and Publications
For more information, contact these publishers: ..... 1
Wall Mount General Information
Heat Pump Wall Mount Model Nomenclature .......... 2
Shipping Damage .................................................... 5
General ................................................................ 5
Duct Work................................................................ 5
Filters ................................................................ 5
Fresh Air Intake........................................................ 6
Condensate Drain .................................................... 6
Installation Instructions
Wall Mounting Information ....................................... 7
Mounting the Unit ..................................................... 7
Typical Installations .................................................. 7
Wiring – Main Power...............................................1 1
Wiring – Low Voltage ..............................................11
Low Voltage Connections.......................................11
Thermostat Indicator Lamps .................................. 14
Emergency Heat Mode .......................................... 14
Compressor Malfunction Light............................... 14
Start Up
Important Installer Note ......................................... 15
Crankcase Heaters................................................ 15
High Pressure Switch ............................................ 15
Three Phase Scroll Compressor Start Up ............. 15
Phase Monitor ....................................................... 16
Service Hints ......................................................... 16
Sequence of Operation.......................................... 16
Pressure Service Ports .......................................... 16
Defrost Cycle ......................................................... 17
Troubleshooting
Solid State Heat Pump Control
Troubleshooting Procedure................................ 18
Checking Temperature Sensor
Outside Unit Circuit............................................ 19
Temperature vs. Resistance of
Temperature Sensor .......................................... 19
Fan Blade Dimensions .......................................... 20
Removal of Fan Shroud......................................... 20
Refrigerant Charge ................................................ 20
Pressure Tables ................................................ 21-22
Optional Accessories............................................. 23
Figures
Figure 1 Unit Dimensions...................................... 3
Figure 2 Blower Damper Assembly....................... 6
Figure 3 Mounting Instructions.............................. 8
Figure 4 Electric Heat Clearance .......................... 8
Figure 5 Wall Mounting Instructions...................... 9
Figure 6 Wall Mounting Instructions...................... 9
Figure 7 Common Wall Mounting Installations.... 10
Figure 8 Hot Gas Reheat During
Dehumidification with CS2000 .......... 12
Figure 9 Hot Gas Reheat During
Dehumidification with
Programmable Thermostat ................ 13
Figure 10 Start Up Label ....................................... 15
Figure 11 Defrost Control Board ........................... 18
Figure 12 Fan Blade Setting ................................. 21
Tables
Table 1 Electric Heat Table .................................. 2
Table 2 Electrical Specifications .......................... 4
Table 3 Thermostat Wire Size ........................... 14
Table 4 Wall Thermostats .................................. 14
Table 5 Troubleshooting .................................... 18
Table 6 Fan Blade Dimensions.......................... 20
Table 7 Suction Line Temperatures ................... 20
Table 8 Recommended Operating Ranges ....... 20
Table 9 Indoor Blower Performance .................. 20
Table 10 Maximum ESP of Operation ................. 21
Table 11 Pressure Table – Cooling...................... 21
Table 12 Pressure Table – Heating...................... 22
Table 13 Optional Accessories ............................ 22
Table 14 Dehumidification Relay Logic Board..... 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/NFPA 90B
Heating and Air
Conditioning Systems
Load Calculation for.....................ACCA Manual J or N
Residential Winter and
Summer Air Conditioning
Low Pressure, Low Velocity ...... ACCA Manual D or Q
Duct System Design for Winter
and Summer Air Conditioning
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 Refrigerating
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
Manufactured under the following U.S. patent numbers:
5,301,744; 5,002,116; 4,924,934; 4,875,520; 4,825,936
Other patents pending.
Manual 2100-443
Page 1
WALL MOUNT GENERAL INFORMA TION
Heat Pump Wall Mount Model Nomenclature
MODEL NUMBER
CONTROL MODULES
WH 48 4 D A 10 X X X X X B
CAPACITY
42 – 3-1/2 T on
48 – 4 T on
60 – 5 T on
DEHUMIDIFICATION
REHEAT CIRCUIT
VOL TS & PHASE
A – 230/208/60-1
B – 230/208/60-3
C – 460/60-3
NOTE: For 0 KW and circuit breakers (230/208 V) or pull disconnects (460 V) applications, insert 0Z in the KW field of model number.
REVISION
KW
00 – No KW
05 – 5 KW
06 – 6KW
09 – 9 KW
10 – 10 KW
VENTILATION OPTIONS
X – Barometric Fresh Air Damper
(Standard)
B – Blank-off Plate
M – Motorized Fresh Air Damper
V – Commercial Room Ventilator
-
Motorized with Exhaust
E – Economizer (Internal) - Fully
Modulating with Exhaust
R – Energy Recovery V entilator -
Motorized with Exhaust
COLOR OPTIONS
X – Beige (Standard)
1 – White
2 – Mesa T an
3 – Colonial White
4 – Buckeye Gray
FILTER OPTIONS
X – One Inch Throwaway
(Standard)
W – One Inch Washable
P – Two Inch Pleated
COIL OPTIONS
X – Standard
1 – Phenolic Coated Evaporator
2 – Phenolic Coated Condenser
3 – Phenolic Coated Evaporator
and Condenser
OUTLET OPTIONS
X – Front (Standard)
TABLE 1
ELECTRIC HEAT TABLE
BD224HW
sledoMAD224HW
1-0421-8023-0423-8023-0641-0421-8023-0423-8023-064
WK
AUTBA UTBA UTBAUTBAUTBAUTBAUTBAUTBAUTBAUTB
58.02560711.81008218.02560711.8100821
64.41005025.21063512.708402
97.12006037.81030328.01007037.12006037.81030328.0100703
016.14031432.63006526.14031432.6300652
BD484HWCD224HW
AD484HW
AD306HW
BD484HW
BD306HW
CD484HW
CD306HW
Manual 2100-443
Page 2
Manual 2100-443
Page 3
FIGURE 1
UNIT DIMENSIONS
MIS-411
3
3
3
3
3
3
3
3
3
TABLE 2
ELECTRICAL SPECIFICATIONS
TIUCRICELGNIS TIUCRICLAUD
4
detaR
&stloV
ledoM
Z0A,00AD224HW
50A
01A
Z0B,00BD224HW
60B
90B
Z0C,00CD224HW
60C
90C
Z0A,00AD484HW
50A
01A
Z0B,00BD484HW
60B
90B
Z0C,00CD484HW
90C
Z0A,00AD306HW
50A
01A
Z0B,00BD306HW
90B
Z0C,00CD306HW
90C
esahP
3-064
3-064
064
.oN
dleiF
rewoP
.stkC
1
1-802/032
1
3-802/032
1
1
1
1
1
1
1-802/032
1
3-802/032
1
1
1
1
1
1-802/032
1
3-802/032
1
1
1
43
2ro1
06
2ro1
68
62
44
35
31
32
72
83
2ro1
46
2ro1
09
72
54
45
51
82
54
2ro1
17
2ro1
79
33
06
61
92
1
muminiM
tiucriC
yticapmA
05
07
09
53
05
06
02
52
03
05
08
53
05
06
02
03
06
09
54
06
02
53
2
mumixaM
lanretxE
roesuF
tiucriC
rekaerB
001
011
2
dleiF
rewoP
eriW
eziS
8
6
3
8
8
6
21
01
01
8
6
3
8
8
6
21
01
8
4
3
8
6
21
8
dnuorG
eriW
eziS
01
8
8
01
01
01
21
01
01
01
8
8
01
01
01
21
01
01
8
6
01
01
21
01
4
muminiM
tiucriC
yticapmA
AtkCBtkCAtkCBtkCAtkCBtkCAtkCBtkC
A/N
A/N
43
62
43
25
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
83
62
83
25
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
54
62
54
25
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
1
mumixaM
lanretxE
rekaerB
A/N
A/N
05
03
05
06
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
06
03
06
06
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
06
06
06
06
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
2
.tkCroesuF
A/N
8
8
A/N
A/N
A/N
A/N
A/N
A/N
A/N
8
8
A/N
A/N
A/N
A/N
A/N
A/N
8
8
A/N
A/N
A/N
A/N
rewoPdleiF
eziSeriW
A/N
01
6
A/N
A/N
A/N
A/N
A/N
A/N
A/N
01
6
A/N
A/N
A/N
A/N
A/N
A/N
01
6
A/N
A/N
A/N
A/N
2
eriWdnuorG
eziS
A/N
A/N
01
01
01
01
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
01
01
01
01
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
01
01
01
01
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
Q
Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.
Based on 75°C copper wire. All wiring must conform to NEC and all local codes.
R
Maximum KW that can operate with heat pump on.
S
T
These Minimum Circuit Ampacity" values are to be used for sizing the field power conductors. Refer to the
National Electrical Code (latest version), article 310 for power conductor sizing. CAUTION: When more than
one field 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.
Manual 2100-443
Page 4
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 and any instructions packaged with
any separate equipment required to make up the entire
heat pump 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 1 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.
Refer to Table 10 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.
A 1/4 inch clearance to combustible material for the
first three feet (3') of duct attached to the outlet air
frame is required. See Wall Mounting Instructions and
Figures 4 and 5 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.
CAUTION
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 inches.
Any grille that meets the 5/8 inch louver criteria, may be
used. It is recommended that Bard Return Air Grille Kit
RG-2 thru RG-5 or RFG-2 thru RFG-5 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
DUCT WORK
Any heat pump is more critical of proper operating
charge and an adequate duct system than a straight air
conditioning unit. All duct work, supply and return,
must be properly sized for the design air flow
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.
A 1 inch throwaway 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 2 inch
pleated filter are also available as optional accessories.
The internal filter brackets are adjustable to
accommodate the 2 inch filter by bending down the tabs
to allow spacing for the 2 inch filters.
Manual 2100-443
Page 5
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in
the service panel.
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.
If the unit is equipped with the 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 minium blade position stops must be
installed. See Figure 1.
All capacity, efficiency 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 efficiency.
BLOWER DAMPER ASSEMBLY
BLADE IS LOCKED
CLOSED FOR
SHIPPING
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
Manual 2100-443
Page 6
MIS-938
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