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Related Manuals for Bard WH381
Summary of Contents for Bard WH381
- Page 1 INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE HEAT PUMPS Models WH381 WH431 WH491 Bard Manufacturing Company, Inc. Manual : 2100-342 Bryan, Ohio 43506 Supersedes: 2100-342H Since 1914..Moving ahead just as planned. File: Tab 17 Date: 08-01-07 Manual 2100-342 © Copyright 2003 Page...
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Page 2: Table Of Contents
CONTENTS Getting Other Informations and Publications Start Up Important Installer Note ......... 17 Wall Mount General Information Crankcase Heaters ..........17 Heat Pump Wall Mount Model Nomenclature ..4 High Pressure Switch ..........17 Shipping Damage ............ 7 Two Speed Outdoor Fan Motors ......17 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 COIL OPTIONS X - Standard VOLTS & PHASE CAPACITY 1 - Phenolic Coated Evaporator A - 230/208/60/1 38 - 3 Ton 2 - Phenolic Coated Condenser B - 230/208/60/3 43 - 3½... -
Page 5: Figure 1 Unit Dimensions
Manual 2100-342 Page 5 of 24... -
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 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 the service panel. top of the unit down to the unit base. There are openings in the unit base for the drain hose to pass If the unit is equipped with a fresh air damper assembly, through. -
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 4. 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 4 Mounting Instructions
Manual 2100-342 Page 10 of 24... -
Page 11: Figure 4A Electric Heat Clearance
FIGURE 4A 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 2100-342 Page 12 of 24... -
Page 13: Figure 7 Common Wall Mounting Installations
FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS Manual 2100-342 Page 13 of 24... -
Page 14: Wiring - Main Power
WIRING – MAIN POWER WIRING – LOW VOLTAGE WIRING Refer to the unit rating plate for wire sizing 230 / 208V, 1 phase and 3 phase equipment dual information and maximum fuse or “HACR” type primary voltage transformers. All equipment leaves the circuit breaker size. -
Page 15: Optional Outdoor Thermostat Applications
TABLE 3 to the individual structure. Utilization of the heating Application Data, and the heat loss calculation of the THERMOSTAT WIRE SIZE building are useful in determining the correct set points. NOTE: The additional LAB (low ambient bypass) relay is required to prevent heater operation during low temperature cooling operation. -
Page 16: Electric Heat Hold-Off
This is done to maximize efficiency by utilizing the heat ELECTRIC HEAT HOLD-OFF pump to bring the conditioned space temperature up, rather (See Figures 11 and 12) than cycling on the electric heat due a second stage call for In other applications, it is desirable to disable the operation heat from the thermostat on start-up coming off a night set- of the electric heat until outdoor temperatures have reached back condition or someone increasing the thermostat set... -
Page 17: Figure 13 Start Up Procedure Decal
START UP FIGURE 13 START UP LABEL IMPORTANT INSTALLER NOTE For improved start up performance wash the indoor coil IMPORTANT with a dish washing detergent. THESE PROCEDURES MUST BE FOLLOWED AT INITIAL START UP CRANKCASE HEATERS AND AT ANY TIME POWER HAS WH491-B and -C are provided with compressor BEEN REMOVED FOR 12 HOURS crankcase heat. -
Page 18: Phase Monitor
A thermostat demand for heat completes R-Y circuit, PHASE MONITOR pulling in compressor contactor starting compressor and All units with three phase compressors are equipped outdoor motor. R-G also make starting indoor blower with a 3 phase line monitor to prevent compressor motor. -
Page 19: Figure 14 Defrost Control Board
Be careful not to touch any other terminals with the mounted on the outdoor coil is shunted out and will instrument used to short the SPEEDUP terminals. It activate the timing circuit. This permits the defrost may take up to 10 seconds with the SPEEDUP cycle to be checked out in warmer weather conditions terminals shorted for the speedup to be completed and without the outdoor temperature having to fall into the... -
Page 20: 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 21: Checking Temperature Sensor Outside Unit Circuit
CHECKING TEMPERATURE SENSOR 3. Check resistance reading to chart of resistance use OUTSIDE UNIT CIRCUIT sensor ambient temperature. (Tolerance of part is ± 10%.) 1. Disconnect temperature sensor from board and from outdoor coil. 4. If sensor resistance reads very low, then sensor is shorted and will not allow proper operation of the 2. -
Page 22: Figure 15 Fan Blade Setting
FAN BLADE SETTING DIMENSIONS TABLE 7 REFRIGERANT CHARGE Shown in Figure 15 are the correct fan blade setting dimensions for proper air delivery across the outdoor f r i coil. Any service work requiring removal or adjustment in 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 23: Table 10 Indoor Blower Performance
INDOOR BLOWER PERFORMANCE – CFM 230V / 460V Subtract .08 static for 2" filter NOTE: WH431 and WH491 are shipped NOTE: WH381 is shipped with the indoor with the indoor blower on high blower on medium speed for speed for ducted applications. -
Page 24: 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.
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