Bard WH381 Installation Instructions Manual

Manual 2100-342IPage 2 of 24CONTENTSGetting Other Informations and Publications 3Wall Mount General InformationHeat Pump Wall Mount Model Nomenclature .......... 4Shipping Damage .................................................... 7General ................................................................ 7Duct Work ................................................................ 7Filters ................................................................ 7Fresh Air Intake ....................................................... 8Condensate Drain – Evaporator ............................. 8Condensate Drain – Condenser ............................. 8Installation InstructionsWall Mounting Information ....................................... 9Mounting the Unit .................................................... 9Wiring – Main Power ............................................. 14Wiring – Low Voltage Wiring ................................. 14Optional Outdoor Thermostat Applications ............ 15Electric Heat Hold-Off ............................................ 16Start UpImportant Installer Note ......................................... 17Crankcase Heaters ................................................ 17High Pressure Switch ............................................ 17Two Speed Outdoor Fan Motors ............................ 17Three Phase Scroll Compressor Start Up .............. 17Phase Monitor ....................................................... 18Service Hints ......................................................... 18Sequence of Operation .......................................... 18Pressure Service Ports .......................................... 18Defrost Cycle ................................................. 18 & 19TroubleshootingSolid State Heat Pump ControlTroubleshooting Procedure ................................... 20Checking Temperature Sensor OutsideUnit Circuit ............................................................. 21Temperature vs. Resistance of Temperature ......... 21Fan Blade Setting Dimensions .............................. 22Removal of Fan Shroud ......................................... 22Refrigerant Charge ................................................ 22Pressure Tables ..................................................... 24FiguresFigure 1 Unit Dimensions ...................................... 5Figure 2 Fresh Air Damper Assembly ................... 8Figure 3 Condensate Drains ................................. 8Figure 4 Mounting Instructions ............................ 10Figure 4A Electric Heat Clearance ......................... 11Figure 5 Wall Mounting Instructions .................... 12Figure 6 Wall Mounting Instructions .................... 12Figure 7 Common Wall Mounting Installations .... 13Figure 8 Unit 24V Terminal Board ....................... 14Figure 9 Compressor Cutoff and OutdoorThermostat Wiring ................................ 15Figure 10 Compressor Cutoff and OutdoorThermostat Wiring ................................ 15Figure 11 Electric Heat Hold-Off Wiring ................ 16Figure 12 Electric Heat Hold-Off Wiring ................ 16Figure 13 Start Up Procedure Decal ..................... 17Figure 14 Defrost Control Board ........................... 19Figure 15 Fan Blade Setting ................................. 22TablesTable 1 Electric Heat Table .................................. 4Table 2 Electrical Specifications .......................... 6Table 3 Thermostat Wire Size ........................... 15Table 4 Wall Thermostat .................................... 16Table 5 Troubleshooting .................................... 20Table 6 Fan Blade Dimensions .......................... 22Table 7 System Charge Ratings ........................ 22Table 8 Rated CFM and Rated ESP .................. 22Table 9 Maximum ESP of OperationElectric Heat Only ................................. 22Table 10 Indoor Blower Performance .................. 23Table 11 Pressure Table – Cooling ...................... 24Table 12 Pressure Table – Heating ...................... 24