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Related Manuals for Bard SH381D Series
Summary of Contents for Bard SH381D Series
- Page 1 INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE HEAT PUMPS Models SH381D SH431D SH491D Bard Manufacturing Company, Inc. Manual : 2100-413G Supersedes: 2100-413F Bryan, Ohio 43506 File: Volume III Tab 17 Since 1914..Moving ahead just as planned. Date: 09-26-07 Manual 2100-413G Page 1 of 28...
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Page 2: Table Of Contents
CONTENTS Getting Other Informations and Publications ..3 Start Up Important Installer Note ......... 19 Wall Mount General Information Crankcase Heaters ..........19 Heat Pump Wall Mount Model Nomenclature ..4 High Pressure Switch ..........19 Shipping Damage ............ 7 Three Phase Scroll Compressor Start Up .... -
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 MODEL NUMBER CONTROL REVISIONS MODULES VOLTS & PHASE A - 230/208/60/1 COIL OPTIONS CAPACITY B - 230/208/60/3 X - Standard 38 - 3 Ton C - 460/60/3 1 - Phenolic Coated Evaporator 43 - 3½... -
Page 5: Table 1 Electrical Specifications
Manual 2100-413G Page 5 of 28... -
Page 6: Figure 1 Unit Dimensions
Manual 2100-413G Page 6 of 28... -
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 CONDENSATE DRAIN – EVAPORATOR All units are built with fresh air inlet slots punched in A plastic drain hose extends from the drain pan at the top of the unit down to the unit base. There are the service panel. -
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 2100-413G Page 10 of 28... -
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 2100-413G Page 12 of 28... -
Page 13: Figure 7 Common Wall Mounting Installations
FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS Manual 2100-413G Page 13 of 28... -
Page 14: Wiring - Main Power
WIRING – MAIN POWER WIRING – LOW VOLTAGE WIRING Refer to the unit rating plate for wire sizing information 230 / 208V, 1 phase and 3 phase equipment dual and maximum fuse or “HACR” type circuit breaker primary voltage transformers. All equipment leaves the size. -
Page 15: Figure 8 Wiring With Cs2000A2 Monitor
FIGURE 8 SHXXXDX – HOT GAS REHEAT DURING DEHUMIDIFICATION WITH CS2000A2 ENERGY MONITOR FULL TIME DEHUMIDIFICATION Manual 2100-413G Page 15 of 28... - Page 16 FIGURE 9 SHXXXDX – HOT GAS REHEAT DURING DEHUMIDIFICATION WITH PROGRAMMABLE THERMOSTAT FULL TIME DEHUMIDIFICATION Manual 2100-413G Page 16 of 28...
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Page 17: Compressor Cutoff Thermostat And Outdoor Thermostats
FIGURE 10 10KW 1 PH — 6 & 9KW 3 PH TABLE 2 THERMOSTAT WIRE SIZE COMPRESSOR CUT OFF THERMOSTAT Outdoor thermostats are available to hold off various AND OUTDOOR THERMOSTATS banks of electric heat until needed as determined by outdoor temperature. -
Page 18: Low Voltage Connections
NOTE: For total and proper control using DDC, a LOW VOLTAGE CONNECTIONS total of 7 controlled outputs are required (6 if These units use a grounded 24 volt AC low voltage no ventilation system is installed). For proper circuit. system operation under Emergency Heat conditions where the compressor needs to be The “R”... -
Page 19: Figure 11 Start Up Procedure Decal
START UP FIGURE 11 IMPORTANT INSTALLER NOTE START UP LABEL For improved start up performance wash the indoor coil IMPORTANT with a dish washing detergent. 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 20: Phase Monitor
PHASE MONITOR HEATING SEQUENCE – On a call for heating, the compressor and reversing valve of the unit are energized All units with three phase compressors are equipped to provide heat pump heating. If the room temperature with a 3 phase line monitor to prevent compressor falls below the 2nd stage heating set point backup damage due to phase reversal. -
Page 21: Figure 12 Defrost Control Board
There is a cycle speed up jumper on the control. This DEFROST CYCLE 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 12. 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 22: Troubleshooting
TROUBLESHOOTING SOLID STATE HEAT PUMP CONTROL 3. Turn thermostat blower to “auto” position. Indoor TROUBLESHOOTING PROCEDURE blower should stop. NOTE: Many models have a 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 23: 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 24: Table 5 Dehumidification Relay Logic Board
Manual 2100-413G Page 24 of 28... -
Page 25: Figure 13 Fan Blade Setting
REFRIGERANT CHARGE FAN BLADE SETTING DIMENSIONS Shown in Figure 13 are the correct fan blade setting The correct system R-22 charge is shown on the unit rating plate. Optimum unit performance will occur with dimensions for proper air delivery across the outdoor a refrigerant charge shown on the unit serial plate. -
Page 26: Table 9 Indoor Blower Performance
TABLE 9 INDOOR BLOWER PERFORMANCE – CFM 230V / 460V Subtract .08 static for 2" filter NOTE: SH381 is shipped with the indoor NOTE: SH431 and SH491 are shipped with blower on medium speed for ducted the indoor blower on high speed for applications. -
Page 27: Pressure Tables
TABLE 10 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. -
Page 28: Cooling Mode
FIGURE 14 BARD HEAT PUMP COOLING MODE CIRCUIT DIAGRAM FIGURE 15 BARD HEAT PUMP DEHUMIDIFICATION MODE CIRCUIT DIAGRAM Manual 2100-413G Page 28 of 28...