Bard WG3S2-A User manual

Literature Assembly
911-0602
Contains the following:
Installation Instructions
Users’ Guide
Trouble Shooting Manual
Servicing Procedures
Replacement Parts Manual
2100-587(N)
2100-502(B)
2100-367(B)
2100-479
2110-812(V)
7960-420 Warranty Form

Page 1 of 46
Wall Mounted Gas/Electric
Models:
INSTALLATION INSTRUCTIONS
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual : 2100-587N
Supersedes: 2100-587M
Date: 9-1-23
WG3S2-A
WG4S2-A
WG5S2-A
WG3S2-B
WG4S2-B
WG5S2-B
WG3S2-C
WG4S2-C
WG5S2-C
WARNING
READ ALL INSTRUCTIONS CAREFULLY BEFORE
BEGINNING THE INSTALLATION.
THE INSTALLATION MUST COMPLY WITH THESE
INSTRUCTIONS AND THE REQUIREMENTS OF
ALL GOVERNING CODES AND ORDINANCES FOR
THE INSTALLATION LOCATION.
IT IS THE RESPONSIBILITY OF INSTALLER
TO KNOW AND UNDERSTAND ALL OF THESE
REQUIREMENTS.
FAILURE TO DO SO COULD CREATE A HAZARD
RESULTING IN PROPERTY DAMAGE, BODILY
INJURY, OR DEATH.

Manual 2100-587N
Page 2 of 46
CONTENTS
Getting Other Information and Publications ...4
Wall Mount Gas/Electric General Information ..5
WG Series Model Nomenclature ........................... 5
Ventilation Options ............................................. 5
Air Conditioning Module Options.......................... 6
Installation ..............................................................9
1. Important ....................................................... 9
2. Application ..................................................... 9
3. Duct Work....................................................... 9
4. High Altitude Applications................................ 9
5. Transportation Damage................................... 10
6. General Information....................................... 10
7. Wall Mounting Information ............................. 10
8. Mounting the Unit ......................................... 10
9. Clearances.................................................... 16
10. Vent Terminal and Combustion Air Inlet Hood... 17
11. Optional Vertical Venting ................................ 17
12. Vent Resizing Instructions .............................. 18
13. Fresh Air Intake............................................. 18
14. Condensate Drain .......................................... 18
15. Wiring – Main Power ...................................... 18
16. Wiring – Low Voltage Wiring............................ 20
17. Thermostats.................................................. 20
18. Gas Supply and Piping................................... 26
19. Manifold Pressure Adjustment ........................ 27
20. Checking Gas Input Rate................................ 27
21. Standard Orice Sizing and
High Altitude Derate ...................................... 29
22. Conversion of Gas Input BTUH from High
to Low Rating................................................ 31
23. Measuring Air Temperature Rise...................... 31
24. Filters .......................................................... 32
25. Compressor Control Module ............................ 32
26 Phase Monitor............................................... 34
27. Lighting and Shutdown Instructions ................ 35
28. Service Agency Procedures ............................. 36
29. Maintaining Unit in Good Working Order .......... 36
30. Replacement Parts ........................................ 37
31. Sequence of Operation – Heating .................... 38
32. Sequence of Operation – Cooling..................... 38
33. Indoor Blower Operation................................. 39
Start Up ..................................................................41
Application ...................................................... 41
Important Installer Note .................................... 41
High and Low Pressure Switch........................... 41
Three Phase Scroll Compressor .......................... 41
Service ....................................................................42
Compressor Solenoid ........................................ 42
Fan Blade Setting Dimensions ........................... 42
Removal of Fan Shroud ..................................... 42
ECMTM Motors .................................................. 43
34. Pressure Service Ports ................................... 45
35. R-410A Refrigerant Charge ............................ 46
36. Low NOx Burner Assembly "N" Sufx
Models Only – U.S. Installations Only.............. 46
Page Page

Manual 2100-587N
Page 3 of 46
FIGURES
Figure 1 Unit Dimensions .................................. 8
Figure 2A Mounting Instructions for WG3S2 ........ 11
Figure 2B Mounting Instructions for WG4S2
and WG5S2 ....................................... 12
Figure 3 Combustible Clearance ....................... 13
Figure 4 Wall Mounting Instructions.................. 14
Figure 5 Wall Mounting Instructions.................. 14
Figure 6 Common Wall Mounting Installations.... 15
Figure 7 Location of Vent Terminal in Shipping .. 16
Figure 8 Vent Terminal and Combustion
Air Intake .......................................... 17
Figure 9 Installation of Flexible Conduit ............ 19
Figure 10A Low Voltage Wiring – No Vent .............. 21
Figure 10B Low Voltage Wiring – CRV.................... 22
Figure 10C Low Voltage Wiring – Economizer ......... 23
Figure 10D Low Voltage Wiring – ERV.................... 24
Figure 11 Gas Pipe Connection........................... 25
Figure 12 Proper Piping Practice ........................ 26
Figure 13 Access Internal Filter.......................... 32
Figure 14 8201-169 Compressor Control Module. 33
Figure 15 Lighting and Shutdown Instruction
Label ................................................ 35
Figure 16 Top View of Gas Control ...................... 36
Figure 17 Sequence of Operation – Electronic
Blower Control ................................... 38
Figure 18 Furnace Control Board and
Blower Control ................................... 39
Figure 19 Fan Blade.......................................... 42
Figure 20 Control Disassembly ........................... 44
Figure 21 Winding Test ...................................... 44
Figure 22 Drip Loop .......................................... 44
Figure 23 Low NOx Insert .................................. 46
TABLES
Table 1 Specications ........................................7
Table 2 Minimum Installation Clearances........... 16
Table 3 Thermostat Wire Size............................ 20
Table 4 Wall Thermostat................................... 20
Table 5 Length of Standard Pipe Threads........... 26
Table 6 Gas Pipe Sizes – Natural Gas ................26
Table 7 Natural Gas Derate Capacities
for All Models ...................................... 29
Table 8 Natural Gas Orice Tables .....................30
Table 9 Indoor Blower Performance ...................39
Table 10 Integrated Furnace and Blower
Control Operation .................................40
Table 11 Fan Blade Dimensions.......................... 42
Table 12 Cooling Pressures................................. 45
Page Page

Manual 2100-587N
Page 4 of 46
GETTING OTHER INFORMATION AND PUBLICATIONS
FOR MORE INFORMATION, CONTACT
THESE PUBLISHERS:
ACCA Air Conditioning Contractors of America
1712 New Hampshire Avenue, NW
Washington, DC 20009
Telephone: [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]
CSA Canadian Standards Association
178 Rexdale Boulevard
Rexdale, Ontario
Canada. M9W 1R3
Telephone: [phone]
BARD MANUFACTURING COMPANY, INC.
BRYAN, OHIO 43506 USA
These publications can help when installing the
furnace. They can usually be found at the local library
or purchased directly from the publisher. Be sure to
consult the current edition of each standard.
National Fuel Gas Code ..........ANSI Z223.1 / NFPA 54
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
Standard for Chimneys, .............................NFPA 211
Fireplaces, Vents, and Solid Fuel Burning Appliances
Load Calculation for ........................... ACCA Manual J
Residential Winter and Summer Air Conditioning
Duct Design for Residential .............. ACCA Manual D
Winter and Winter Air Conditioning and Equipment
Selection
Canadian Electrical Code........................... CSA C22.1
Canadian Installation Code ................. CAN/CGA B149

Manual 2100-587N
Page 5 of 46
WALL MOUNT GAS/ELECTRIC GENERAL INFORMATION
MODEL NUMBER NOMENCLATURE
Low ambient control is required with economizer for low temperature compressor operation.
VENTILATION OPTIONS
Description Factory Installed
Code No.
Field Installed
Part No.
Blank-Off Plate B WGSBOP-5
Commercial Ventilator – Multiple Position V WGSCRVMP-5
Economizer – Fully Modulating E WGSJIFM-5
Energy Recovery Ventilator – 230 Volt R WGSERV-A5A
Energy Recovery Ventilator – 460 Volt R WGSERV-C5A
WG 4 S 2 – A X C X X X X X X
MODEL
Wall Mount
Gas/Electric
CONTROL OPTIONS
(See Table page 6)
VENT
(See Table Below)
COOLING
CAPACITY
3 = 3 ton
4 = 4 ton
5 = 5 ton
OUTLET
X = Front (Standard)
T = Top
COIL OPTIONS
X = Standard
1 = Phenolic coated evaporator
2 = Phenolic coated condenser
3 = Phenolic coated both coils
COLOR
X = Beige
(Standard)
4 = Buckeye Gray
FILTER
X = 2" Pleated (Standard)
W = 1" Washable
M = 2" Pleated (MERV 11)
N = 2" Pleated (MERV 13)
B = NPBI TECH +
2" Pleated (MERV 13)
VOLTAGE
A = 230/208-60-1
B = 230/208-60-3
C = 460-60-3
REVISION
FEATURE
(-) = Standard
(C) = Canada
EMISSIONS
X = Standard
N = NOx Certied
*125,000 BTU input model is not NOx certied.
HEATING INPUT
A = 50,000
B = 75,000
C = 100,000
D = 125,000*
Denotes Step
Capacity

Manual 2100-587N
Page 6 of 46
AIR CONDITIONING MODULE OPTIONS
STD = Standard equipment
CCM Compressor control module has adjustable 30 second to 5 minute delay-on-break timer. On initial
power up, or any time the power is interrupted, the delay-on-make will be 2 minutes plus 10% of
the delay-on-break setting. There is no delay-on-make during routine operation of the unit. The
module also provides the lockout feature (with 1 retry) for high and/or low pressure controls, and a
2 minute timed bypass for low pressure control.
HPC High pressure control is auto reset. Always used with compressor control module (CCM) which is
included. See note .
LPC Low pressure control is auto reset. Always used with compressor control module (CCM) which is
included. See note .
LAC Low ambient control permits cooling operation down to 0°F.
CAUTION
During the initial ring of the burners there will probably be some amount of smoke issued to the
circulating air stream as the result of residual oil burning o󰀨 of the heat exchanger tubes. This oil
is required during the forming process of the stainless steel heat exchanger tubes to facilitate the
bending. OSHA or the National Toxicology Program does not list the oil as a carcinogen. In vapor
form this may be irritating to the eyes or could cause headaches. This is a one-time occurrence, and
ventilation of the space may be required depending upon the space being conditioned.
CCM

HPC

LPC

LAC

Factory Installed
Code
Field Installed
Part
STD STD STD X N/A
STD STD STD -- H CMA-28

Manual 2100-587N
Page 7 of 46
*75° C Copper wire size ** Maximum time delay fuse or circuit breaker
TABLE 1
SPECIFICATIONS
Models WG3S2-A WG3S2-B WG3S2-C WG4S2-A WG4S2-B WG4S2-C WG5S2-A WG5S2-B WG5S2-C
Electrical Rating – 60 Hz 230/208-60-1 230/208-60-3 460-60-3 230/208-60-1 230/208-60-3 460-60-3 230/208-60-1 230/208-60-3 460-60-3
Operating Voltage Range 197-253 187-253 414-506 197-253 187-253 414-506 197-253 187-253 414-506
Minimum Circuit Ampacity 27 23 12 36 27 14 45 31 15
* Field Wire Size 8 10 14 8 10 12 8 8 12 Ground Wire Size 10 10 14 10 10 12 10 10 12
** Delay Fuse – Max. 40 30 15 45 40 20 60 45 20
Compressor
Compressor Type Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll
Volts 230/208 230/208 460 230/208 230/208 460 230/208 230/208 460 Rated Load Amps 11.6/12.9 8.8/9.9 6.7 15.0/17.8 10.4/11.8 5.4 20.9/23.0 12.8/14.1 6.2 Branch Circuit Selection Current 15.3 11.7 5.8 21.2 14.1 6.5 27.2 16.5 7.2 Lock Rotor Amps 83 73 38 104 83 41 153 110 52
Fan Motor and Compressor
Fan Motor – HP/RPM/SPD 1/3-850-2 1/3-850-2 1/3-850-1 1/3-850-2 1/3-850-2 1/3-850-1 1/3-850-2 1/3-850-2 1/3-850-1
Blower Motor – Amps 2.5 2.5 1.3 2.5 2.5 1.3 2.5 2.5 1.3
Fan – DIA/CFM 24" – 2700 24" – 2700 24" – 2700 24" – 2700 24" – 2700 24" – 2700 24" – 2700 24" – 2700 24" – 2700
Motor and Evaporator
Blower Motor – HP/RPM/SPD 1/2 Variable 1/2 Variable 1/2 Variable 3/4 Variable 3/4 Variable 3/4 Variable 3/4 Variable 3/4 Variable 3/4 Variable
Blower Motor – Amps 3.6 3.6 3.6 4.7 4.7 4.7 6.0 6.0 6.0
CFM Cooling and E.S.P. 1100 1100 1100 1500 1500 1500 1700 1700 1700
Filter Sizes (Inches) 20 x 30 x 2 20 x 30 x 2 20 x 30 x 2 20 x 30 x 2 20 x 30 x 2 20 x 30 x 2 20 x 30 x 2 20 x 30 x 2 20 x 30 x 2
Charge (R-410A) 156 156 156 240 240 240 246 246 246

Manual 2100-587N
Page 8 of 46
F
G
N
P
DDD FF
GG
HH
A
M
I
C
KJ
L
H
R
S S S S S
T
V Y
AA
X
U
Z
CC
BB
B
EE O
E
B
II
Q
W1
1
PANEL (LOCKABLE)
PANEL
CONDENSER
AIR OUTLET
BACK
RETURN OPENING
SUPPLY OPENING
GAS ENTRANCES
AIR EXHAUST COMBUSTION
CONDENSER AIR INLETS
4 DEG. PITCH IN TOP
VESTIBULE DOOR
COMBUSTION AIR INTAKE
VENT OPTION
PANEL DOOR CIRCUIT BREAKER/ CONTROL
FRONT
DISCONNECT ACCESS
RIGHT SIDE
ENTRANCES LOW VOLTAGE
HIGH VOLTAGE ENTRANCES
FRONT DOOR
MIS-3240 B
FILTER SERVICE DOOR
UNIT A B C D E F G H I J K L M N O P Q R
WG3S2 31.63 87.5 33.38 28.75
WG4S2/WG5S2
41.63
97.5
43.38
38.75
UNIT S T U V W X Y Z AA BB CC DD EE FF GG HH II
WG3S2 3.75 24.9
WG4S2/WG5S2
13.75
34.9
3.75
16
9.88 29.88 15.88 27.25
1.257.25 1.13
4.5
12.19 10 40.25
43.81
0.44
15.31
2.253.88 42 17.34 8.44 3.25 2.75
2.514.88 30 14.12 15.44 42.88
FIGURE 1
Unit Dimensions