Bard WH602, WH483, WH421 User Manual
INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGE HEAT PUMPS
MODELS:
WH421
WH483
WH602
BARD MANUFACTURING COMPANY
Bryan, Ohio 43506
Since 1914...Moving ahead, just as planned.
Manual: 2100-399
Supersedes:
File: Volume III Tab 17
Date: 03-01-02
Copyright 2002
CONTENTS
Getting Other Information and Publications .......... 1
For more information, contact these publishers: ...... 1
Wall Mount General Information ............................. 2
Air Conditioner Wall Mount Model Nomenclature..... 2
Shipping Damage .................................................... 5
General ............................................................... 5
Duct Work ............................................................... 5
Filters ............................................................... 5
Fresh Air Intake........................................................ 6
Condensate Drain .................................................... 6
Installation Instructions ........................................... 7
Wall Mounting Information ....................................... 7
Mounting the Unit ..................................................... 7
Typical Installations .................................................. 7
Wiring – Main Power.............................................11
Wiring – Low Voltage Wiring.................................11
Thermostat Wiring ................................................. 12
Heat Anticipation.................................................... 12
Thermostat Indicator Lamps .................................. 13
Emergency Heat Position ...................................... 13
Compressor Malfunction ........................................ 13
Start Up ................................................................... 14
Important Installer Note.......................................... 14
High Pressure Switch............................................. 14
Three Phase Scroll Compressor Start Up
Information............................................................. 14
Phase Monitor........................................................ 15
Service Hints.......................................................... 15
Sequence of Operation.......................................... 15
Pressure Service Ports .......................................... 15
Defrost Cycle ......................................................... 15
Troubleshooting ..................................................... 17
Solid State Heat Pump Control
Troubleshooting Procedure.................................... 17
Checking T emperature Sensor Outdoor
Unit Circuit ............................................................. 18
Fan Blade Setting Dimensions ............................... 19
Removal of Fan Shroud......................................... 19
Refrigerant Charge ................................................ 19
Pressure Chart.................................................. 20-21
Optional Accessories ............................................. 21
Figures
Figure 1 Unit Dimensions ..................................... 3
Figure 2 Blower Damper Assembly...................... 6
Figure 3 Mounting Instructions.............................. 8
Figure 3A Electric Heat Clearance ......................... 8
Figure 4 Wall-Mounting Instructions ..................... 9
Figure 5 Wall-Mounting Instructions ..................... 9
Figure 6 Common Wall-Mounting Instructions.... 10
Figure 7 Unit 24V Terminal Board .......................1 1
Figure 8 Compressor Cutoff and Outdoor
Thermostat Wiring................................ 12
Figure 9 Start-Up Label...................................... 14
Figure 10 Defrost Control Board .......................... 16
Figure 1 1 Fan Blade Setting ................................ 19
Tables
Table 1 Electrical Specifications ......................... 2
Table 2 Electric Heat Table ................................. 4
Table 3 Thermostat Wire Size .......................... 12
Table 4 Wall Thermostat and
Subbase Combinations ........................ 13
Table 5 Troubleshooting.................................... 17
T able 6 Fan Blade Dimensions ......................... 19
T able 7 Suction Line T emperatures................... 19
Table 8 Recommended Operating Ranges ...... 19
Table 9 Indoor Blower Performance ................. 19
Table 10 Maximum ESP of Operation ................ 20
Table 11 Cooling Pressures................................ 20
Table 12 Heating Pressures................................ 21
Table 13 Optional Accessories ........................... 21
i
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
Residential Winter and Manual N
Summer Air Conditioning
Low Pressure, Low Velocity .......... ACCA Manual D or
Duct System Design for Winter Manual Q
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
ASHRAEAmerican 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;
4,432,409
Other patents pending.
Manual 2100-399
Page 1
WALL MOUNT GENERAL INFORMATION
HEAT PUMP WALL MOUNT MODEL NOMENCLATURE
MODEL NUMBER
WH 48 1 – A 10 X X X X X B
CAPACITY
42 – 3-1/2 T on
48 – 4 T on
60 – 5 T on
VOLTS & PHASE
A – 230/208/60-1
B – 230/208/60-3
C – 460/60-3
NOTE: For 0KW 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
15 – 15 KW
18 – 18 KW
20 – 20 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 Ventilator -
Motorized with Exhaust
COLOR OPTIONS
X – Beige (Standard)
1 – White
2 – Mesa Tan
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
CONTROL MODULES
(See Chart Below)
and Condenser
OUTLET OPTIONS
X – Front (Standard)
TABLE 1
ELECTRIC HEAT TABLE
sledoM
AUTBA UTBAUTBAUTBAUTBA UTBAUTBAUTBA UTBAUTB
WK
4 7.61056314.4104201
58.02560711.81008218.02560711.8100821
64.41005025.21063512.708402
97.12006037.81030328.01007037.12006037.81030328.0100703
016.14031432.63006526.14031432.6300652
515.26002151.45004832.63002152.13004830.81002155.26002151.45004832.63002152.13004830.8100215
81 3.34004165.7305064
02 2.38052861.2700215
A-124HW
1-0421-8023-0423-8023-0641-0421-8023-0423-8023-064
B-124HW
B-384HW
C-124HW
A-384HW
A-206HW
B-384HW
B-206HW
C-384HW
C-206HW
Manual 2100-399
Page 2
FIGURE 1
UNIT DIMENSIONS
Manual 2100-399
Page 3
MIS-411
3
3
3
3
3
3
3
3
3
TABLE 2
ELECTRICAL SPECIFICATIONS
TIUCRICELGNIS TIUCRICLAUD
4
detaR
stloV
ledoM
Z0A,00A-124HW
50A
01A
51A
Z0B,00B-124HW
60B
90B
51B
Z0C,00C-124HW
60C
90C
51C
Z0A,00A-384HW
40A
50A
01A
51A
02A
Z0B,00B-384HW
60B
90B
51B
81B
Z0C,00C-384HW
90C
51C
Z0A,00A-206HW
50A
01A
51A
02A
Z0B,00B-206HW
90B
51B
81B
Z0C,00C-206HW
90C
51C
3-064
3-064
3-064
.oN
dleiF
esahP&
1-802/032
3-802/032
1-802/032
3-802/032
1-802/032
3-802/032
rewoP
.stkC
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
43
2ro1
06
2ro1
68
2ro1
68
62
44
35
35
31
32
72
72
63
75
2ro1
26
1ro1
88
2ro1
88
2ro1
2ro1
1ro1
2ro1
2ro1
011
52
34
25
25
06
31
62
72
54
17
79
79
011
33
06
06
06
61
92
92
1
muminiM
tiucriC
yticapmA
05
07
09
09
53
05
06
06
02
52
03
03
05
06
07
53
05
06
06
06
51
03
03
06
09
54
06
06
06
02
53
53
2
mumixaM
lanretxE
roesuF
tiucriC
rekaerB
001
001
011
011
011
011
2
dleiF
rewoP
eriW
eziS
8
6
3
3
8
8
6
6
21
01
01
01
8
6
6
3
3
2
8
8
6
6
6
41
01
8
8
4
3
3
2
8
6
6
6
21
8
8
dnuorG
eriW
eziS
01
8
8
8
01
01
01
01
21
01
01
01
01
8
8
8
8
6
01
01
01
01
01
41
01
01
01
8
6
6
6
01
01
01
01
21
01
01
4
muminiM
tiucriC
yticapmA
AtkCBtkCAtkCBtkCAtkCBtkCAtkCBtkC
A/N
A/N
43
62
43
25
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
A/N
A/N
A/N
A/N
A/N
A/N
63
62
63
25
63
25
95
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
A/N
A/N
A/N
A/N
54
62
54
25
54
25
95
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
1
mumixaM
lanretxE
roesuF
A/N
A/N
05
03
05
06
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
A/N
A/N
A/N
A/N
A/N
A/N
05
03
05
06
05
06
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
A/N
A/N
A/N
A/N
A/N
A/N
06
06
06
06
06
06
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
A/N
A/N
2
rewoPdleiF
rekaerB.tkC
eziSeriW
A/N
A/N
8
8
8
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
8
8
8
6
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
8
8
8
6
A/N
A/N
A/N
A/N
A/N
A/N
A/N
A/N
01
01
6
01
6
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
A/N
A/N
A/N
A/N
A/N
A/N
01
01
6
01
6
01
6
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
A/N
A/N
A/N
A/N
01
01
6
01
6
01
6
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
2
eriWdnuorG
eziS
A/N
01
01
01
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
01
01
01
01
A/N
A/N
A/N
A/N
A/N
A/N
A/N
Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.
Q
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 2100-399
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.
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.
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 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.
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
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 2100-399
Page 5
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