valutazioni - 5, GPA: 4.6 ( )

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This will activate the compressor sump heat. Do not change the From Dwg. 756978 Rev. 5 NOTES: 1. FUSED DISCONNECT SIZE, POWER WIRING AND GROUNDING OF EQUIPMENT MUST COMPLY WITH CODES. 2. BE SURE POWER SUPPLY AGREES WITH EQUIPMENT AND HEATER NAMEPLATE. 3. LOW VOLTAGE WIRING TO BE 18 AWG MINIMUM CONDUCTOR. 4. SEE HEATER NAMEPLATE FOR CURRENT RATING OF HEATER USED. 5. SEE UNIT AND HEATER DIAGRAM FOR ELECTRICAL CONNECTION DETAILS. 6. IF ELECTRIC HEATER ACCESSORY IS NOT INSTALLED OMIT THE ELECTRIC HEATER, ASSOCIATED POWER WIRES AND THE ‘W’ AND ‘X2’ THERMOSTAT WIRES. 7. FIG. 3 DEMONSTRATES CONNECTION OF THE OUTDOOR THERMOSTAT ACCESSORY ONLY. FOR FURTHER UNIT CONNECTION DETAILS REFER TO THE OTHER FIGURES. 8. THE 41A(BR) WIRE IS FIRST STAGE ELECTRIC HEAT. IF THE ELECTRIC HEATER ACCESSORY HAS TWO HEATING STAGES THE 41C(BR) WIRE IS SECOND STAGE ELECTRIC HEAT. 9. WHEN THE BAYECON054A OR –055A ECONOMIZER IS INSTALLED THE BAYRLAY003 RELAY ACCESSORY KIT IS REQUIRED TO INTERFACE THE ECONOMIZER TO THE HEAT PUMP FOR PROPER SYSTEM OPERATION. WHEN THE BAYECON054B OR –055B OR 073A ECONOMIZER IS INSTALLED, THE BAYRLAY004A RELAY ACCESSORY KIT IS REQUIRED TO INTERFACE THE ECONOMIZER TO THE HEAT PUMP FOR PROPER SYSTEM OPERATION. 10. THE BAYSTAT033A OUTDOOR THERMOSTAT ACCESSORY KIT CONTAINS A THERMOSTAT AND A RELAY. THE RELAY IS NOT REQUIRED TO BE USED IN THIS APPLICATION. r START - U P PRE-START QUICK CHECKLIST . Is the unit properly located and level with the proper clearance? See Figure 5. . Is the duct work correctly sized, run, taped, insulated, and weatherproofed with proper unit arrangement. See Ductwork Installation section. . Is the condensate line properly sized, run, trapped, and pitched? . Is the filter of the correct size and number? Is it clean and in place? . Is the wiring properly sized and run according to the unit wiring diagram? . Are all the wiring connections, including those in the unit, tight? . Has the unit been properly grounded and fused with the recommended fuse size? See Wiring Data. . Is the thermostat level, correctly wired, well located, and set for the proper heat anticipation? . Have the air conditioning systems been checked at the service ports for charge and leak tested if necessary? . Do the condenser fan and indoor blower turn free without rubbing, and are they tight on the shafts? . Has the indoor blower speed been determined and the proper speed been set? See the Unit Wiring Diagram. . Has all work been done in accordance with applicable local and national codes? . Are all covers and access panels in place to prevent air loss and safety hazards? STARTING THE UNIT IN THE COOLING MODE CAUTION: Before starting the system on the cooling cycle, turn the thermostat switch to OFF and close the unit disconnect switch. This procedure energizes the compressor crankcase heater, vaporizing any liquid refrigerant in the crankcase. This is a precaution against foaming at startup which could damage the compressor bearings. Allow the heater to operate a minimum of eight (8) hours. NOTE: See the section on "Sequence of Operation" for a description of the cooling operating sequence. ^WARNING: DO NOT OPERATE THE UNIT WITHOUT THE EVAPORATOR FAN ACCESS PANEL IN PLACE. REINSTALL THE ACCESS PANEL AFTER PERFORMING ANY MAINTENANCE PROCEDURES ON THE FAN. OPERATING THE UNIT WITHOUT THE ACCESS PANEL PROPERLY INSTALLED MAY RESULT IN SEVERE PERSONAL INJURY OR DEATH. To start the unit in the cooling mode, set the thermostat system switch to COOL and move the thermostat COOL indicator to a setting below room temperature. The condenser (outdoor) fan motor compressor and evaporator (indoor) fan motor will operate automatically. OPERATING PRESSURES After the unit has operated in the cooling mode for a short period of time, install pressure gauges on the gauge ports of the discharge and suction line valves. Check the suction and discharge pressures and compare them to the normal operating pressures provided in the unit's SERVICE FACTS. NOTE: Do not use the pressures from the unit's SERVICE FACTS to determine the unit refrigerant charge. The correct charge is shown on the unit nameplate. To charge the system accurately, weigh in tIhe charge according to the unit nameplate. VOLTAGE With the compressor operating, check the line voltage at the unit. The voltage should be within the range shown on the unit nameplate. If low voltage is encountered, check the size and length of the supply line from the main disconnect to the unit. The line may be undersized for the length of the run. COOLING SHUT DOWN Place the system selector in the OFF position or reset thermostat at a setting above room temperature. Do not de-energize the main power disconnect except when unit it to be serviced. Power is required to keep the heat pump compressor warm and boil off refrigerant in the compressor. STARTING THE UNIT IN THE HEATING MODE NOTE: See the section on "Sequence of Operation" for a description of the heat pump heating operating sequence. Check to...

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