Carrier 50ZH024-060 User Manuals

Table of Contents

• DEFROST

  15
• ELECTRIC RESISTANCE HEATING

  15
• MAINTENANCE

  15
• Air Filter

  16
• SAFETY CONSIDERATIONS

  1
• Unit Top Removal (Outdoor-Coil Side)

  16
• INTRODUCTION

  2
• Indoor Blower and Motor

  16
• RECEIVING AND INSTALLATION

  2
• Outdoor Coil, Indoor Coil, and Condensate Drain Pan

  16
• Check Equipment

  2
• Outdoor Fan

  17
• IDENTIFY UNIT

  2
• Electrical Controls and Wiring

  18
• INSPECT SHIPMENT

  2
• Refrigerant Circuit

  18
• Provide Unit Support

  2
• Indoor Airflow

  18
• SLAB MOUNT

  2
• Metering Devices

  18
• GROUND MOUNT

  2
• Lubrication

  18
• Provide Clearances

  2
• Liquid Line Strainer

  18
• Place Unit

  2
• High Flow Valves

  19
• Select and Install Ductwork

  2
• TROUBLESHOOTING

  22
• START-UP CHECKLIST

  23
• TIONS (50ZH060 ONLY)

  6
• DOWNFLOW (VERTICAL) DISCHARGE

  6
• Provide for Condensate Disposal

  6
• Install Electrical Connections

  7
• HIGH-VOLTAGE CONNECTIONS

  7
• ROUTING POWER LEADS INTO UNIT

  8
• GROUND

  8
• ROUTING CONTROL POWER WIRES

  8
• ACCESSORY ELECTRIC HEAT WIRING

  8
• SPECIAL PROCEDURES FOR 208-V OPERATION

  8
• PRE-START-UP

  9
• START-UP

  9
• Check for Refrigerant Leaks

  10
• CHARGE THE UNIT AS FOLLOWS:

  10
• Start-Up Cooling Section and Make Adjustments

  10
• CHECKING COOLING CONTROL OPERATION

  10
• COMPRESSOR ROTATION

  10
• Refrigerant Charge

  10
• NO CHARGE

  10
• LOW CHARGE COOLING

  10
• TO USE THE COOLING CHARGING CHART

  10
• HEATING MODE CHARGE

  11
• Indoor Airflow and Airflow Adjustments

  11
• FOR 208/230-V

  12
• FOR 460-V MOTORS

  12
• Unit Controls

  12
• HIGH-PRESSURE RELIEF VALVE

  12
• LOSS OF CHARGE SWITCH

  12
• COMPRESSOR OVERLOAD

  12
• Sequence of Operation

  12
• FAN OPERATION

  12
• COOLING

  14
• HEAT PUMP HEATING

  14