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Summary of Contents for Bard WH303
- Page 1 WALL MOUNTED INSTALLATION PACKAGED HEAT PUMP INSTRUCTIONS WH303, WH363 Models: Bard Manufacturing Company, Inc. Manual No.: 2100-489 Supersedes: NEW Bryan, Ohio 43506 File: Volume III, Tab 17 Since 1914. . .Moving ahead just as planned. Date: 01-18-08 Manual 2100-489 Page...
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Page 2: Table Of Contents
CONTENTS Getting Other Information and Publications Start Up For more information, Important Installer Note ........20 contact these publishers ........3 Crankcase Heaters ..........20 Service Hints ............20 Wall Mount General Information Sequence of Operation ........20 Heat Pump Wall Mount Model Nomenclature ..4 Pressure Service Ports ........ -
Page 3: Getting Other Information And Publications
Getting Other Information and Publications FOR MORE INFORMATION, CONTACT These publications can help you install the air 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 standard. -
Page 4: Wall Mount General Information
WALL MOUNT GENERAL INFORMATION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE REVISIONS CONTROL MODEL NUMBER MODULES VOLTS & PHASE CAPACITY COIL OPTIONS A - 230/208/60/1 30 - 2½ Ton X - Standard B - 230/208/60/3 36 - 3 Ton COLOR OPTIONS 1 - Phenolic Coated Evaporator C - 460/60/3 X - Beige (Standard) -
Page 5: Table 1 Electric Heat Table
Manual 2100-489 Page 5 of 26... -
Page 6: Figure 1 Unit Dimensions
Manual 2100-489 Page 6 of 26... -
Page 7: Table 3 Electrical Specifications
Manual 2100-489 Page 7 of 26... -
Page 8: Filters
5/8 inches. Any grille that meets the 5/8 inch louver criteria may be used. It is recommended that Bard Return Air Grille Kit RG-2 through RG-5 or RFG-2 through RFG-5 be installed when no return duct is used. Contact distributor or factory for ordering information. -
Page 9: Installation Instructions
INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION 3. Locate and mark lag bolt locations and bottom mounting bracket location. See Figure 3. 1. Two holes, for the supply and return air openings, 4. Mount bottom mounting bracket, if used. must be cut through the wall as shown in Figure 3. 5. -
Page 10: Figure 3 Mounting Instructions
Manual 2100-489 Page 10 of 26... -
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" clearance to combustible surfaces. WARNING A minimum of 1/4" clearance must be maintained between the supply air duct and combustible materials. This is required for the fist three (3) feet of ducting. -
Page 12: Figure 5 Attaching Top Outlet To Unit
FIGURE 5 ATTACHING TOP OUTLET AIRFRAMES TO UNIT FIGURE 6 UNIT WITH TOP OUTLET MOUNTED UNDER OVERHANG Manual 2100-489 Page 12 of 26... -
Page 13: Figure 7 Wall-Mounting Instructions
FIGURE 7 WALL-MOUNTING INSTRUCTIONS SEE FIGURE 3 – MOUNTING INSTRUCTIONS FIGURE 8 WALL-MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS SEE FIGURE 1 FOR DUCT DIMENSIONS Manual 2100-489 Page 13 of 26... -
Page 14: Figure 9 Common Wall-Mounting Installations
FIGURE 9 COMMON WALL-MOUNTING INSTALLATIONS Manual 2100-489 Page 14 of 26... -
Page 15: Wiring - Main Power
If no motorized vent option is used, nine (9) wires WIRING — MAIN POWER should be run from the thermostat subbase to the 24V Refer to the unit rating plate for wire sizing information terminal board in the unit. A nine (9) conductor, 18 and maximum fuse or “HACR Type”... -
Page 16: Figure 10 Low Voltage Wiring
FIGURE 10 LOW VOLTAGE WIRING TABLE 5 THERMOSTAT WIRE SIZE Manual 2100-489 Page 16 of 26... -
Page 17: Optional Outdoor Thermostat Applications
OPTIONAL OUTDOOR THERMOSTAT Thus, not requiring the optional compressor cut-off APPLICATIONS thermostat or the electric heat cut-off thermostat option. Since most equipment at the time of manufacture is not OPTIONAL COMPRESSOR CUTOFF designated for any specific destination of the country and THERMOSTAT (See Figures 11 and 12) are installed in areas not approaching the lower outdoor temperature range, outdoor thermostats are not factory... -
Page 18: Figure 13 Electric Heat Hold-Off Wiring
ELECTRIC HEAT HOLD-OFF (See Figures 13 efficiency by utilizing the heat pump to bring the and 14) conditioned space temperature up, rather than cycling on the electric heat due a second stage call for heat from the In other applications, it is desirable to disable the thermostat on start-up coming off a night setback operation of the electric heat until outdoor temperatures condition or someone increasing the thermostat set... -
Page 19: Table 6 Wall Thermostat
TABLE 6 WALL THERMOSTAT , l o , l o - t l i t s i Manual 2100-489 Page 19 of 26... -
Page 20: Figure 15 Start Up Label
START UP FIGURE 15 IMPORTANT INSTALLER NOTE START UP LABEL For improved start-up performance, wash the indoor IMPORTANT coil with a dishwashing detergent. THESE PROCEDURES MUST BE CRANKCASE HEATERS FOLLOWED AT INITIAL START UP All units are provided with some form of compressor AND AT ANY TIME POWER HAS crankcase heat. -
Page 21: Figure 16 Defrost Control Board
circumstances require a change to another time, remove PRESSURE SERVICE PORTS the wire from the 60 minute terminal and reconnect to High and low pressure service ports are installed on all the desired terminal. The manufacturer’s units so that the system operating pressures can be recommendation is for 60 minute defrost cycles. -
Page 22: Troubleshooting
TROUBLESHOOTING SOLID STATE HEAT PUMP CONTROL 3. Turn thermostat blower to “auto” position. Indoor 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 23: Checking Temperature Sensor Outside Unit Circuit
3. Check resistance reading to chart of resistance use CHECKING DEFROST SENSOR sensor ambient temperature. (Tolerance of part is 1. Disconnect temperature sensor from board and from ± 10%.) outdoor coil. 4. If sensor resistance reads very low, then sensor is 2. -
Page 24: Figure 17 Fan Blade Setting
FAN BLADE SETTING DIMENSIONS The suction line temperatures in Table 9 are based upon 80ºF dry bulb/67ºF wet bulb (50 percent R.H.) Shown in Figure 17 are the correct fan blade setting temperature and rated airflow across the evaporator dimensions for proper air delivery across the outdoor during cooling cycle. -
Page 25: Pressure Tables
TABLE 13 COOLING PRESSURE (PSI) – OUTDOOR TEMPERATURE °F AIR TEMPERATURE ENTERING OUTDOOR COIL °F TABLE 14 HEATING PRESSURE (PSI) – OUTDOOR TEMPERATURE °F 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 and should be found under section titled “Refrigerant Charge”... -
Page 26: Optional Accessories
TABLE 15 OPTIONAL ACCESSORIES l a i i t n t a l i t n t a l i t n t a l t i u t i u t i u t i u Manual 2100-489 Page 26 of 26...