Bard SH381 User manual

Manual 2100-410G
Page 1 of 25
INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGE HEAT PUMPS
Models:
SH381
SH431
SH491
Manual : 2100-410G
Supersedes: 2100-410F
File: Volume III Tab 17
Date: 10-21-08
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914....Moving ahead just as planned.

Manual 2100-410G
Page 2 of 25
CONTENTS
Getting Other Informations and Publications 3
Wall Mount General Information
Heat Pump Wall Mount Model Nomenclature.......... 4
Shipping Damage .................................................... 7
General ................................................................ 7
Duct Work................................................................ 7
Filters ................................................................ 7
Fresh Air Intake ....................................................... 8
Condensate Drain – Evaporator ............................. 8
Installation Instructions
Wall Mounting Information....................................... 9
Mounting the Unit .................................................... 9
Wiring – Main Power ............................................. 14
Wiring – Low Voltage Wiring ................................. 14
Optional Outdoor Thermostat Applications ............ 15
Thermostat Indicators ............................................ 17
Start Up
Important Installer Note ......................................... 18
Crankcase Heaters................................................ 18
High Pressure Switch ............................................ 18
Three Phase Scroll Compressor Start Up.............. 18
Phase Monitor ....................................................... 19
Service Hints ......................................................... 19
Sequence of Operation.......................................... 19
Pressure Service Ports.......................................... 19
Defrost Cycle ......................................................... 20
Troubleshooting
Solid State Heat Pump Control
Troubleshooting Procedure ................................... 21
Checking Temperature Sensor Outside
Unit Circuit ............................................................. 22
Temperature vs. Resistance of Temperature ......... 22
Fan Blade Setting Dimensions .............................. 23
Removal of Fan Shroud......................................... 23
Refrigerant Charge ................................................ 23
Pressure Tables ..................................................... 25
Figures
Figure 1 Unit Dimensions...................................... 5
Figure 2 Fresh Air Damper Assembly ................... 8
Figure 3 Mounting Instructions............................ 10
Figure 4 Electric Heat Clearance .........................11
Figure 5 Wall Mounting Instructions.................... 12
Figure 6 Wall Mounting Instructions.................... 12
Figure 7 Common Wall Mounting Installations.... 13
Figure 8 Unit 24V Terminal Board ....................... 14
Figure 9 Compressor Cutoff Thermostat
Wiring ................................................... 15
Figure 10 Compressor Cutoff Thermostat
Wiring ................................................... 15
Figure 11 Electric Heat Hold-Off Wiring................ 16
Figure 12 Electric Heat Hold-Off Wiring................ 16
Figure 13 Start Up Procedure Decal ..................... 18
Figure 14 Defrost Control Board ........................... 20
Figure 15 Fan Blade Setting ................................. 23
Tables
Table 1 Electric Heat Table .................................. 4
Table 2 Electrical Specifications .......................... 6
Table 3 Thermostat Wire Size ........................... 15
Table 4 Wall Thermostat.................................... 17
Table 5 Troubleshooting .................................... 21
Table 6 Fan Blade Dimensions.......................... 23
Table 7 Refrigerant Charge ............................... 23
Table 8 Recommended Operation Range ......... 23
Table 9 Maximum ESP of Operation
Electric Heat Only ................................. 23
Table 10 Indoor Blower Performance .................. 24
Table 11 Pressure Table – Cooling...................... 25
Table 12 Pressure Table – Heating...................... 25

Manual 2100-410G
Page 3 of 25
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
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 Refrigerating,
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 2100-410G
Page 4 of 25
WALL MOUNT GENERAL INFORMATION
HEAT PUMP WALL MOUNT MODEL NOMENCLATURE
SH 38 1 – A 08 X X X X X B
1Vent options are without exhaust capability. May require separate field supplied barometric relief in building.
MODEL NUMBER CONTROL
MODULES
CAPACITY
38 - 3 Ton
43 - 3½ Ton
49 - 4 ton
VOLTS & PHASE
A - 230/208/60/1
B - 230/208/60/3
C - 460/60/3
REVISIONS KW
FILTER OPTIONS
X - 1-Inch Throwaway (Standard)
W - 1-Inch Washable
P - 2-Inch Pleated
COLOR OPTIONS
X - Beige (Standard)
4 - Buckeye Gray
COIL OPTIONS
X - Standard
1 - Phenolic Coated Evaporator
2 - Phenolic Coated Condenser
3 - Phenolic Coated Evaporator
and Condenser
OUTLET OPTIONS
X - Front (Standard)
VENTILATION OPTIONS
B - Blank-off Plate
E - Economizer
M - Motorized Fresh Air Damper 1
P - Commercial Ventilator - Motorized - Power Return w/Exhaust
R - Energy Recovery Ventilator w/Built-In Exhaust
V - Commercial Ventilator - Motorized - Spring Return w/Exhaust
X - Barometric Fresh Air Damper (Standard) 1
TABLE 1
ELECTRIC HEAT TABLE
sledoM
A-183HS A-134HS A-194HS B-183HS B-134HS B-194HS C-183HS C-134HS C-194HS
1-0421-8023-0423-8023-064
WKAUTBAUTBAUTBAUTBAUTB
58.02560711.8100821
64.41005025.21063512.708402
83.33082728.8205402
97.12006037.81030328.0100703
01 6.14031432.6300652

Manual 2100-410G
Page 5 of 25
FIGURE 1
UNIT DIMENSIONS
LEDOM
htdiWhtpeDthgieHylppuSnruteR
)W()D()H(ABCBEFGIJKLMNOPQRST
183HS 134HS 194HS 570.24234.22578.4888.988.9288.5188.9288.3401.9166.1300.0386.2349.6296.4334.2373.388.2488.3200.0100.200.6188.1
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