Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Bard WH242D
Summary of Contents for Bard WH242D
- Page 1 INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE HEAT PUMP Model WH242D Bard Manufacturing Company Manual : 2100-374D Supersedes: 2100-374C Bryan, Ohio 43506 File: Volume III Tab 17 Since 1914..Moving ahead just as planned. Date: 09-01-03 © Copyright 2003...
-
Page 2: Table Of Contents
CONTENTS Getting Other Informations and Publications Start Up Important Installer Note ......... 13 Wall Mount General Information Crankcase Heaters ..........13 Heat Pump Wall Mount Model Nomenclature ..2 Service Hints ............13 Shipping Damage ............ 2 Sequence of Operation .......... 13 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 conditioner or heat pump. You can usually find these at THESE 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 WH 24 2 D A 08 X X X X X B MODEL NUMBER CONTROL MODULES COIL OPTIONS X - Standard REVISIONS CAPACITY 1 - Phenolic Coated Evaporator COLOR OPTIONS 24 - 2 Ton VENTILATION OPTIONS 2 - Phenolic Coated Condenser... -
Page 5: Figure 1 Unit Dimensions
FIGURE 1 UNIT DIMENSIONS FRONT VIEW SIDE VIEW BACK VIEW MIS-1261... -
Page 6: Duct Work
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. These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. -
Page 7: Filters
Any grille that meets the 5/8 inch louver criteria may be maximum energy efficiency. used. It is recommended that Bard Return Air Grille Kit RG2 thru RG5 or RFG2 thru RFG5 be installed The blank-off plate is available upon request from the when no return duct is used. -
Page 8: Installation Instructions
INSTALLATION INSTRUCTIONS WIRING – MAIN POWER WALL MOUNTING INFORMATION Refer to the unit rating plate for wire sizing information 1. These units are secured by wall mounting brackets and maximum fuse or “HACR” type circuit breaker which secure the unit to the outside wall surface at size. -
Page 9: Figure 3 Mounting Instructions
FIGURE 3 MOUNTING INSTRUCTIONS MIS-353... -
Page 10: Figure 4 Wall Mounting Instructions
FIGURE 4 WALL MOUNTING INSTRUCTIONS SEE FIGURE 3 – MOUNTING INSTRUCTIONS MIS-548 FIGURE 5 WALL MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS MIS-549 Manual 2100-374 Page... -
Page 11: Figure 6 Common Wall Mounting Installations
FIGURE 6 COMMON WALL MOUNTING INSTALLATIONS MIS-550 Manual 2100-374 Page... - Page 12 FIGURE 7 WHxxxDx – HOT GAS REHEAT DURING DEHUMIDIFICATION WITH CS2000 ENERGY MONITOR FULL TIME DEHUMIDIFICATION AREA HVAC OCCUPIED 8403-032 C NC BARD CS2000 H600A 8403-038 HONEYWELL H600A HUMIDITY CONTROLLER 8403-047 DEHUMIDISTAT VICONICS H200-10-21-10 8403-042 HONEYWELL B W1 W2 T8511G1070 THERMOSTAT...
- Page 13 FIGURE 8 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 14: Wiring - Low Voltage Wiring
WIRING – LOW VOLTAGE WIRING LOW VOLTAGE CONNECTIONS FOR DDC CONTROL 230 / 208V, 1 phase and 3 phase equipment dual primary voltage transformers. All equipment leaves the Fan Only Energize G factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. -
Page 15: Figure 8 Hot Gas Reheat During Dehumidification With Programmable Thermostat
START UP FIGURE 9 IMPORTANT INSTALLER NOTE START UP LABEL For improved start up performance, wash the indoor coil with a dish detergent. IMPORTANT CRANKCASE HEATERS THESE PROCEDURES MUST BE WH241 units are provided with compressor crankcase FOLLOWED AT INITIAL START UP heat. -
Page 16: Pressure Service Ports
system switch on subbase is placed in "Heat" position, OTHER CONTROL SEQUENCE the "B" terminal being constantly energized from R. A Any time the indoor coil temperature falls below 32 Thermostat demand for heat completes R-Y circuit, degrees the compressor will be de-energized by the pulling in compressor contactor starting compressor and evaporator defrost sensor until the coil temperature rises outdoor motor. -
Page 17: Figure 10 Defrost Control Board
By placing a jumper across the SEN JMP terminals (a Use a small screwdriver or other metallic object, or 1/4 inch QC terminal works best) the defrost sensor another 1/4 inch QC, to short between the SPEEDUP terminals to accelerate the HPC timer and initiate mounted on the outdoor coil is shunted out and will activate the timing circuit. -
Page 18: Troubleshooting
TROUBLESHOOTING 3. Turn thermostat blower switch to “auto” position. SOLID STATE HEAT PUMP CONTROL Indoor blower should stop (after time delay). TROUBLESHOOTING PROCEDURE 4. Set system switch to “heat” or “cool”. Adjust 1. Turn on AC power supply to indoor and outdoor thermostat to call for heat or cool –... -
Page 19: Checking Temperature Sensor Outside Unit Circuit
CHECKING TEMPERATURE SENSOR 3. Check resistance reading to chart of resistance use ambient temperature. (Tolerance of part is ± 10%.) OUTSIDE UNIT CIRCUIT. 4. If sensor resistance reads very low, then sensor is 1. Disconnect temperature sensor from outdoor coil. shorted and will not allow proper operation of the 2. -
Page 20: Figure 11 Fan Blade Setting
FAN BLADE SETTING DIMENSIONS TABLE 7 SUCTION LINE TEMPERATURES Shown in the drawing below are the correct fan blade setting dimensions for proper air delivery across the (Temperatures °F) 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 check and blade adjusted in or out on the motor shaft accordingly. -
Page 21: Pressure Tables
TABLE 11 PRESSURE TABLE COOLING Air Temperature Entering Outdoor Coil °F Pressures in dehumidification mode will be slightly less than normal cooling mode. TABLE 12 PRESSURE TABLE HEATING Air Temperature Entering Outdoor Coil °F Low Side Pressure ± 2 PSIG High Side Pressure ±... -
Page 22: Optional Accessories
TABLE 13 OPTIONAL ACCESSORIES i t n t a l i t n t a l t i u t i u l l u Manual 2100-374 Page... -
Page 23: Figure 12 Circuit Diagram H/P Cooling Mode
FIGURE 12 BARD MFG. HEAT PUMP COOLING MODE CIRCUIT DIAGRAM INDOOR COIL REHEAT COIL 4-WAY VALVE CHECK VALVE OUTDOOR COIL CAPILLARY DRAIN ASSY. 3-WAY VALVE COMPRESSOR MIS-1426 TXV (2 THRU 3 1/2 TON USE ORIFICE) FIGURE 13 BARD MFG. HEAT PUMP DEHUMIDIFICATION MODE...