Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Bard WH422D
Summary of Contents for Bard WH422D
- Page 1 INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE HEAT PUMPS MODELS: WH422D WH484D WH603D Bard Manufacturing Company Manual : 2100-443 Supersedes: Bryan, Ohio 43506 File: Volume III Tab 17 Since 1914...Moving ahead just as planned. Date: 10-23-03 © Copyright 2003...
-
Page 2: Table Of Contents
Contents Start Up Getting Other Informations and Publications For more information, contact these publishers: ..1 Important Installer Note ......... 15 Crankcase Heaters ..........15 Wall Mount General Information High Pressure Switch ..........15 Heat Pump Wall Mount Model Nomenclature ..2 Three Phase Scroll Compressor Start Up ..... -
Page 3: Getting Other Informations And Publications
Getting Other Information and Publications For more information, contact these publishers: 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 ACCA Air Conditioning Contractors of America publisher. -
Page 4: Wall Mount General Information
WALL MOUNT GENERAL INFORMATION Heat Pump Wall Mount Model Nomenclature MODEL NUMBER CONTROL MODULES 4 D A CAPACITY COIL OPTIONS 42 – 3-1/2 Ton REVISION X – Standard 48 – 4 Ton 1 – Phenolic Coated Evaporator 60 – 5 Ton VENTILATION OPTIONS 2 –... -
Page 5: Figure 1 Unit Dimensions
FIGURE 1 UNIT DIMENSIONS MIS-411... -
Page 6: Table 2 Electrical Specifications
TABLE 2 ELECTRICAL SPECIFICATIONS & Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. Based on 75°C copper wire. All wiring must conform to NEC and all local codes. Maximum KW that can operate with heat pump on. These Minimum Circuit Ampacity"... -
Page 7: Shipping Damage
Any grille that meets the 5/8 inch louver criteria, may be standards. used. It is recommended that Bard Return Air Grille Kit RG-2 thru RG-5 or RFG-2 thru RFG-5 be installed Size of unit for a proposed installation should be based 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 the fresh air damper CONDENSATE DRAIN assembly, the assembly is shipped already attached to... -
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
FIGURE 3 MOUNTING INSTRUCTIONS DIMENSION CHART DIMENSION CHART Seal with bead of Top flashing detail view caulking along entire DIM. "A" DIM. "B" DIM. "C" DIM. "D" DIM. "E" DIM. "A" DIM. "B" DIM. "C" DIM. "D" DIM. "E" length of top. Attach supplied Required dimensions to Required dimensions to... -
Page 11: Figure 5 Wall Mounting Instructions
FIGURE 5 WALL-MOUNTING INSTRUCTIONS SEE FIGURE 3 — MOUNTING INSTRUCTIONS MIS-548 FIGURE 6 WALL-MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS SEE FIGURE 1 FOR DUCT DIMENSIONS MIS-549 Manual 2100-443 Page... -
Page 12: Figure 7 Common Wall Mounting Installations
FIGURE 7 COMMON WALL-MOUNTING INSTALLATIONS MIS-550 Manual 2100-443 Page... -
Page 13: Wiring - Main Power
WIRING — MAIN POWER LOW VOLTAGE CONNECTIONS Refer to the unit rating plate for wire sizing These units use a grounded 24 volt AC low voltage information and maximum fuse or “HACR" type circuit. circuit breaker size. Each outdoor unit is marked with The “R”... -
Page 14: Figure 8 Hot Gas Reheat During Dehumidification With Cs2000
FIGURE 8 WHXXXDX – HOT GAS REHEAT DURING DEHUMIDIFICATION WITH CS2000 ENERGY MONITOR FULL TIME DEHUMIDIFICATION IMPORTANT NOTE: Only the thermostat and subbase combinations as shown in Table 4 will work with this equipment. The thermostat and subbase must be matched and the correct operation can be assured only by proper selection and application of these parts. -
Page 15: Figure 9 Hot Gas Reheat During Dehumidification With Programmable Thermostat
FIGURE 9 WHXXXDX – HOT GAS REHEAT DURING DEHUMIDIFICATION WITH PROGRAMMABLE THERMOSTAT FULL TIME DEHUMIDIFICATION IMPORTANT NOTE: Only the thermostat and subbase combinations as shown in Table 4 will work with this equipment. The thermostat and subbase must be matched, and the correct operation can be assured only be proper selection and application of these parts. -
Page 16: Thermostat Indicator Lamps
TABLE 3 THERMOSTAT WIRE SIZE TABLE 4 WALL THERMOSTATS ; l o ; l o THERMOSTAT INDICATOR LAMPS COMPRESSOR MALFUNCTION LIGHT The red lamp will come on if there is any problem that Actuation of the red lamp is accomplished by a relay prevents the compressor from running when it is output from the heat pump control board which is supposed to be. -
Page 17: Figure 10 Start Up Label
START UP IMPORTANT INSTALLER NOTE FIGURE 10 START UP LABEL For improved start-up performance, wash the indoor coil with a dishwashing detergent. IMPORTANT THESE PROCEDURES MUST BE FOL- CRANKCASE HEATERS LOWED AT INITIAL START UP AND AT WH422 units are provided with compressor crankcase ANY TIME POWER HAS BEEN REMOVED heat. -
Page 18: Phase Monitor
PHASE MONITOR HEATING SEQUENCE – On a call for heating, the compressor and reversing valve of the unit are All units with three phase scroll compressors are energized to provide heat pump heating. If the room equipped with a 3 phase line monitor to prevent temperature falls below the 2nd stage heating set point compressor damage due to phase reversal. -
Page 19: Figure 11 Defrost Control Board
Use a small screwdriver or other metallic object, or DEFROST CYCLE another 1/4 inch QC, to short between the SPEEDUP The defrost cycle is controlled by temperature and time terminals to accelerate the HPC timer and initiate on the solid state heat pump control. See Figure 11. defrost. -
Page 20: Troubleshooting
TROUBLESHOOTING 3. Turn thermostat blower switch to auto position. SOLID STATE HEAT PUMP CONTROL Indoor blower should stop. TROUBLESHOOTING PROCEDURE 4. Set system to heat or cool. Adjust thermostat to call 1. Turn on AC power supply to indoor and outdoor for heat or cool –... -
Page 21: Checking Temperature Sensor Outside Unit Circuit
CHECKING TEMPERATURE SENSOR 3. Check resistance reading to chart of resistance. Use sensor ambient temperature. (Tolerance of part is OUTSIDE UNIT CIRCUIT ± 10%.) 1. Disconnect temperature sensor from board and from 4. If sensor resistance reads very low, then sensor is outdoor coil. -
Page 22: Figure 12 Fan Blade Setting
REFRIGERANT CHARGE FAN BLADE SETTING DIMENSIONS The correct system R-22 charge is shown on the unit Shown in the drawing in Figure 12 are the correct fan rating plate. Optimum unit performance will occur with blade setting dimensions for proper air delivery across a refrigerant charge resulting in a suction line the outdoor coil. -
Page 23: Pressure Tables
TABLE 10 MAXIMUM ESP OF OPERATION ELECTRIC HEAT ONLY Values shown are for units equipped with standard 1 inch throwaway filter on 1 inch washable filter. Derate ESP by .15 for 2 inch pleated filters. TABLE 11 COOLING PRESSURE – (All temperatures °F) Low side pressure ±... -
Page 24: Table 12 Pressure Table - Heating
TABLE 12 HEATING PRESSURES – (ALL TEMPERATURES °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 25: Optional Accessories
TABLE 14 DEHUMIDIFICATION RELAY LOGIC BOARD...
Need help?
Do you have a question about the WH422D and is the answer not in the manual?
Questions and answers