Carrier PA3Z-B Скачать руководство пользователя страница 14 | Manualshive

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14

A10025

Fig. 14 -- Single--Phase Accessory Electric Heater Wiring

PA

3Z

B

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Содержание PA3Z-B

Страница 1: ...round Lead to Unit Ground 8 Routing Control Power Wires 8 Accessory Electric Heat Wiring 8 PRE START UP 8 START UP 9 15 Check for Refrigerant Leaks 9 Start Up Cooling and Make Adjustments 9 Checking Cooling and Heating Control Operation 9 Refrigerant Charge 11 No Charge 11 Low Charge Cooling 11 Indoor Airflow and Airflow Adjustments 11 Sequence of Operation 11 Fan Operation 11 Cooling Operation 11...

Страница 2: ...plications with a field supplied plenum RECEIVING AND INSTALLATION Step 1 Check Equipment IDENTIFY UNIT The unit model number and serial number are printed on the unit informative plate Check this information against shipping papers INSPECT SHIPMENT Inspect for shipping damage while unit is still on shipping pallet If unit appears to be damaged or is torn loose from its anchorage have it examined ...

Страница 3: ...eater element 3 Size ductwork for cooling air quantity cfm The minimum air quantity for proper electric heater operation is listed in Table 2 Heater limit switches may trip at air quantities below those recommended 4 Seal insulate and weatherproof all external ductwork Seal insulate and cover with a vapor barrier all ductwork passing through conditioned spaces Follow latest Sheet Metal and Air Con...

Страница 4: ...DE OF UNIT WITH DUCT OPENINGS 0 0 REQUIRED CLEARNACE FOR SERVICING TOP OF UNIT 36 0 914 SIDE OF UNIT OPPOSITE DUCT OPENINGS 30 0 762 SIDE OF UNIT WITH POWER ENTRY 30 0 762 EXCEPT FOR NEC REQUIREMENTS NOTE CLEARANCES MUST BE MAINTAINED TO PREVENT RECIRCULATION OF AIR FROM OUTDOOR FAN DISCHARGE A REMOVABLE FENCE OR BARRICADE REQUIRES NO CLEARANCE DIMENSIONS IN ARE IN MM A10295 Fig 4 Unit Base Dimens...

Страница 5: ... UNIT WITH DUCT OPENINGS 0 0 REQUIRED CLEARANCE FOR SERVICING INCHES MM TOP OF UNIT 36 0 914 SIDE OF UNIT OPPOSITE DUCT OPENINGS 30 0 762 SIDE OF UNIT WITH POWER ENTRY 30 0 762 EXCEPT FOR NEC REQUIREMENTS NOTE CLEARANCES MUST BE MAINTAINED TO PREVENT RECIRCULATION OF AIR FROM OUTDOOR FAN DISCHARGE A REMOVABLE FENCE OR BARRICADE REQUIRES NO CLEARANCE DIMENSIONS IN ARE IN MM A10296 Fig 5 Unit Base D...

Страница 6: ...050 2700 20 508 1 4 1050 2700 20 508 1 4 1050 3000 20 508 1 3 1100 INDOOR COIL ROWS FINS in FACE AREA sq ft 2 12 4 3 3 12 4 3 3 12 4 3 3 12 4 9 3 12 4 9 3 12 6 1 INDOOR BLOWER NOMINAL COOLING AIRFLOW cfm SIZE L x D in mm MOTOR HP 800 8 x 11 203 x 279 1 3 1000 8 x 11 203 x 279 1 3 1200 9 5 x 12 241 x 305 1 2 1400 9 5 x 12 241 x 305 1 2 1600 9 5 x 12 241 x 305 3 4 1750 10 5 x 12 267 x 305 1 HIGH PRE...

Страница 7: ...y of personal injury if an electrical fault should occur This ground may consist of an electrical wire connected to the unit ground screw in the control compartment or conduit approved for electrical ground when installed in accordance with NEC ANSI NFPA 70 American National Standards Institute National Fire Protection Association latest edition in Canada Canadian Electrical Code CSA C22 1 and loc...

Страница 8: ...oad resistor wired across low voltage leads G and C Purpose of resistor is to provide a small electrical load for the indoor thermostat fan circuit to ensure reliable operation ACCESSORY ELECTRIC HEAT WIRING Refer to accessory electric heat installation instructions for information on installing accessory electric heat Accessory electric heat wiring is shown in Fig 14 PRE START UP FIRE EXPLOSION E...

Страница 9: ... practices NOTE Install a filter drier whenever the system has been opened for repair 3 Add a small charge of R 410A refrigerant vapor to system and leak test unit 4 Recover refrigerant from system and evacuate to 500 microns if no additional leaks are found 5 Charge unit with R 410A refrigerant using an accurate scale Refer to unit rating plate for required charge Step 2 Start Up Cooling and Make...

Страница 10: ...10 Table 3 Superheat Charging A10038 Table 4 Required Subcooling A10039 PA3ZB ...

Страница 11: ...efer to the required subcooling in Table 4 to find the required subcooling based on the model type and the outdoor ambient temperature 5 Interpolate if the outdoor temperature lies in between the table values 6 Find the pressure value corresponding to the measured pressure on the compressor discharge line 7 Read across from the pressure reading to obtain the Liquid line temperature for a required ...

Страница 12: ...12 ACCESSORY ELECTRIC HEAT 24 VOLT THERMOSTAT CONNECTIONS 24 VOLT THERMOSTAT CONNECTIONS THERMOSTAT WIRES A10024C Fig 13 Typical Single Phase Connection Electrical Diagram PA3ZB ...

Страница 13: ...13 24 VOLT THERMOSTAT CONNECTIONS A10024L Fig 13 Cont Typical Single Phase Ladder Electrical Diagram PA3ZB ...

Страница 14: ...14 A10025 Fig 14 Single Phase Accessory Electric Heater Wiring PA3ZB ...

Страница 15: ...ired When the need for heating is satisfied the heater and IFM are de energized MAINTENANCE To ensure continuing high performance and to minimize the possibility of premature equipment failure periodic maintenance must be performed on this equipment This cooling unit should be inspected at least once each year by a qualified service person To troubleshoot unit refer to Table 9 Troubleshooting Char...

Страница 16: ... 1 Remove the blower housing a Remove the screws on the external side of the duct panel that fasten the housing to the duct panel assembly b Remove the side access panel and unscrew the mounting bracket that fastens the blower housing to the internal partition panel of the control box assembly c Make sure that the blower housing is supported by hand before completely removing the mounting bracket ...

Страница 17: ...lash water on the insulation motor wiring or air filter s If the drain trough is restricted clear it with a plumbers snake or similar probe device Outdoor Fan Adjustment UNIT OPERATION HAZARD Failure to follow this caution may result in damage to unit components Keep the condenser fan free from all obstructions to ensure proper cooling operation Never place articles on top of unit CAUTION 1 Shut o...

Страница 18: ...xtreme caution when working near compressors Power should be shut off if possible for most troubleshooting techniques Refrigerants present additional safety hazards EXPLOSION HAZARD Failure to follow this warning could result in personal injury or death and or property damage Wear safety glasses and gloves when handling refrigerants Keep torches and other ignition sources away from refrigerants an...

Страница 19: ...ry cloth shop towel inside unit immediately under component s to be serviced and prevent lubricant run offs through the louvered openings in the unit base 4 Perform required service 5 Remove and dispose of any oil contaminated material per local codes Liquid Line Filter Drier The filter drier is specifically designed to operate with R 410A Use only factory authorized components Filter drier must b...

Страница 20: ...imum 700 psig service pressure rating S Leak detectors should be designed to detect HFC refrigerant S R 410A as with other HFCs is only compatible with POE PVE oils S Vacuum pumps will not remove moisture from oil S Only use factory specified liquid line filter driers with rated working pressures no less than 600 psig S Do not install a suction line filter drier in liquid line S POE PVE oils absor...

Страница 21: ...use and replace Faulty outdoor fan motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor operates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat temperature set too low Reset thermostat setting Low refrigerant charge Locate leak repair and recharge Air in system Recover refrigerant...

Страница 22: ...N IN HOUSING ORIFICE AND SETSCREW TIGHTNESS III START UP ELECTRICAL SUPPLY VOLTAGE COMPRESSOR AMPS INDOOR EVAPORATOR FAN AMPS TEMPERATURES OUTDOOR CONDENSER AIR TEMPERATURE DB RETURN AIR TEMPERATURE DB WB COOLING SUPPLY AIR DB WB PRESSURES REFRIGERANT SUCTION PSIG SUCTION LINE TEMP REFRIGERANT DISCHARGE PSIG LIQUID TEMP VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS Measured at suction inlet to c...

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