Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Bard SH381
Summary of Contents for Bard SH381
- Page 1 INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE HEAT PUMPS Models: SH381 SH431 SH491 Bard Manufacturing Company, Inc. Manual : 2100-410G Supersedes: 2100-410F Bryan, Ohio 43506 File: Volume III Tab 17 Since 1914..Moving ahead just as planned. Date: 10-21-08 Manual 2100-410G Page 1 of 25...
-
Page 2: Table Of Contents
CONTENTS Getting Other Informations and Publications Start Up Important Installer Note ......... 18 Wall Mount General Information Crankcase Heaters ..........18 Heat Pump Wall Mount Model Nomenclature ..4 High Pressure Switch ..........18 Shipping Damage ............ 7 Three Phase Scroll Compressor Start Up ....18 General .............. -
Page 3: Getting Other Informations And Publications
Getting Other Information and Publications These publications can help you install the air For more information, contact these conditioner or heat pump. You can usually find these at publishers: your local library or purchase them directly from the publisher. Be sure to consult current edition of each ACCA Air Conditioning Contractors of America standard. -
Page 4: Wall Mount General Information
WALL MOUNT GENERAL INFORMATION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE – CONTROL MODEL NUMBER REVISIONS MODULES CAPACITY VOLTS & PHASE COIL OPTIONS 38 - 3 Ton A - 230/208/60/1 COLOR OPTIONS X - Standard 43 - 3½ Ton B - 230/208/60/3 X - Beige (Standard) 1 - Phenolic Coated Evaporator 49 - 4 ton... -
Page 5: Figure 1 Unit Dimensions
Manual 2100-410G Page 5 of 25... -
Page 6: Table 2 Electrical Specifications
TABLE 2 ELECTRICAL SPECIFICATIONS & . t i - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -... -
Page 7: Shipping Damage
Any grille that meets with 5/8 inch louver criteria may Air Conditioning Contractors of America (ACCA). The be used. It is recommended that Bard Return Air Grille air duct should be installed in accordance with the Kit RG2 through RG5 or RFG2 through RFG5 be Standards of the National Fire Protection Association installed when no return duct is used. -
Page 8: Fresh Air Intake
FRESH AIR INTAKE The blank-off plate is available upon request from the factory and is installed in place of the fresh air damper All units are built with fresh air inlet slots punched in shipped with each unit. the service panel. If the unit is equipped with a fresh air damper assembly, CONDENSATE DRAIN –... -
Page 9: Installation Instructions
INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION WARNING 1. Two holes for the supply and return air openings must be cut through the wall as shown in Figure 3. Failure to provide the 1/4 inch clearance 2. On wood frame walls, the wall construction must be between the supply duct and a combustible strong and rigid enough to carry the weight of the surface for the first 3 feet of duct can result in... -
Page 10: Figure 3 Mounting Instructions
Manual 2100-410G Page 10 of 25... -
Page 11: Figure 4 Electric Heat Clearance
FIGURE 4 ELECTRIC HEAT CLEARANCE SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR WALL MOUNTED UNIT SHOWING 1/4 INCH CLEARANCE TO COMBUSTIBLE SURFACES. WARNING A minimum of 1/4 inch clearance must be maintained between the supply air duct and combustible materials. This is required for the first 3 feet of ducting. -
Page 12: Figure 5 Wall Mounting Instructions
FIGURE 5 WALL MOUNTING INSTRUCTIONS SEE FIGURE 4 – MOUNTING INSTRUCTIONS FIGURE 6 WALL MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS Manual 2100-410G Page 12 of 25... -
Page 13: Figure 7 Common Wall Mounting Installations
FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS Manual 2100-410G Page 13 of 25... -
Page 14: Wiring - Main Power
WIRING – MAIN POWER FIGURE 8 UNIT 24V TERMINAL BOARD Refer to the unit rating plate for wire sizing information and maximum fuse or “HACR” type circuit breaker size. Each outdoor unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current. -
Page 15: Optional Outdoor Thermostat Applications
FIGURE 9 COMPRESSOR CUTOFF THERMOSTAT WIRING 4 – 10KW 1 PH – 6 & 9KW 3 PH FIGURE 10 COMPRESSOR CUTOFF THERMOSTAT WIRING 15 – 20KW 1 PH AND 3 PH TABLE 3 geographic region and sizing of the heating equipment to THERMOSTAT WIRE SIZE the individual structure. -
Page 16: Figure 11 Electric Heat Hold-Off Wiring
ELECTRIC HEAT HOLD-OFF efficiency by utilizing the heat pump to bring the (See Figures 11 and 12) conditioned space temperature up, rather than cycling on the electric heat due a second stage call for heat from In other applications, it is desirable to disable the the thermostat on start-up coming off a night set-back operation of the electric heat until outdoor temperatures condition or someone increasing the thermostat set... -
Page 17: Thermostat Indicators
TABLE 4 WALL THERMOSTAT ; l o ; l o ; l a LOW VOLTAGE CONNECTIONS “W2” terminal is second stage heat (if equipped). These units use a grounded 24 volt AC low voltage “O1” terminal is the ventilation input. This terminal circuit. -
Page 18: Figure 13 Start Up Procedure Decal
START UP FIGURE 13 IMPORTANT INSTALLER NOTE START UP LABEL For improved start up performance wash the indoor coil with a dish washing detergent. IMPORTANT THESE PROCEDURES MUST BE CRANKCASE HEATERS FOLLOWED AT INITIAL START UP SH491-B and -C are provided with compressor AND AT ANY TIME POWER HAS crankcase heat. -
Page 19: Phase Monitor
PHASE MONITOR SEQUENCE OF OPERATION All units with three phase compressors are equipped COOLING – Circuit R-Y makes at thermostat pulling with a 3 phase line monitor to prevent compressor in compressor contactor, starting the compressor and damage due to phase reversal. outdoor motor. -
Page 20: Figure 14 Defrost Control Board
DEFROST CYCLE There is a cycle speed up jumper on the control. This can be used to reduce the time between defrost cycle The defrost cycle is controlled by temperature and time operation without waiting for time to elapse. on the solid state heat pump control. See Figure 14. Use a small screwdriver or other metallic object, or When the outdoor temperature is in the lower 40°F another 1/4 inch QC, to short between the SPEEDUP... -
Page 21: Troubleshooting
TROUBLESHOOTING 3. Turn thermostat blower to “auto” position. Indoor SOLID STATE HEAT PUMP CONTROL blower should stop. NOTE: Many models have a TROUBLESHOOTING PROCEDURE 1-minute blower time delay on “off” command; 1. NOTE: A thorough understanding of the defrost wait for this to time-out. cycle sequence is essential. -
Page 22: Checking Temperature Sensor Outside Unit Circuit
3. Check resistance reading to chart of resistance use CHECKING TEMPERATURE SENSOR OUTSIDE sensor ambient temperature. (Tolerance of part is UNIT CIRCUIT ± 10%) 1. Disconnect temperature sensor from board and from 4. If sensor resistance reads very low, then sensor is outdoor coil. -
Page 23: Figure 15 Fan Blade Setting
FAN BLADE SETTING DIMENSIONS TABLE 7 REFRIGERANT CHARGE Shown in Figure 15 are the correct fan blade setting SUBCOOLING LEVEL dimensions for proper air delivery across the outdoor coil. Any service work requiring removal or adjustment in f r i the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly. -
Page 24: Table 10 Indoor Blower Performance
INDOOR BLOWER PERFORMANCE – CFM 230V / 460V Subtract .08 static for 2" filter NOTE: SH431 and SH491 are shipped with NOTE: SH381 is shipped with the indoor the indoor blower on high speed for blower on medium speed for ducted applications. Move to ducted applications. -
Page 25: Pressure Tables
TABLE 11 PRESSURE TABLE COOLING Air Temperature Entering Outdoor Coil °F Low side pressure ± 2 PSIG High side pressure ± 5 PSIG Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instruction.
Need help?
Do you have a question about the SH381 and is the answer not in the manual?
Questions and answers