Carrier 48EZ(N)-A manual

48EZ A--

A10208L

Fig. 15 Cont. - 208/230-3-60 Ladder Wiring Diagram, Unit 48EZ-A

30

Image 30

Carrier 48EZ(N)-A installation instructions Cont. 208/230-3-60 Ladder Wiring Diagram, Unit 48EZ-A

Contents

Table of Contents Safety Considerations Check Equipment Receiving and InstallationIntroduction Provide Unit Support 48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Roof Curb Dimensions Number Rig and Place Unit Field Fabricate DuctworkProvide Clearances Inspection Connect Condensate Drain Install Flue HoodInstall Gas Piping Rigging/Lifting of Unit See Fig Fire or Explosion Hazard Sediment Trap Install Duct Connections Configuring Units for Downflow Vertical Discharge Physical Data Unit 48EZ-A Physical Data Unit 48EZ-A Cont’d Maximum Gas Flow CapacityHeating Inputs High-Voltage Connections Install Electrical ConnectionsSpecial Procedures for 208-V Operation Unit Component Damage Hazard Control Voltage Connections Balance Point Setting-Thermidistat or Hybrid ThermostatPRE-START-UP Transformer Protection Check for Refrigerant Leaks Start-up Heating and Make Adjust- mentsSTART-UP Unit Sequence of Operation Adjust Gas Input Check Gas InputUnit Damage Hazard Start-up Cooling and Make Adjust- ments Gas Heating Fan Speed Set-up Checking and Adjusting Refrigerant ChargeIndoor Airflow and Airflow Adjustments Unit Operation Hazard Two Cooling Fan Speeds Set-up Dehumidification feature used Continuous Fan OperationColor Coding for Indoor Fan Motor Leads Dry Coil Air Delivery* Horizontal Unit 48EZ-A24-60 Unit Heating Rise MotorRange Speed Color Dry Coil Air Delivery* Horizontal Discharge Unit 48EZ-A24-60 1354 1290 1226 1158 1102 1046 981 918 843 55oF Heating Rise Medium1 48EZ ---,NA48090 48EZ ---,NA48130 Unit Heating Rise Motor Wire Downflow Cooling Standard CFM Scfm Economizer + Tons Horizontal and Downflow Filter Pressure Drop Table IN. W.CUnit Standard CFM Scfm Size Cooling Standard CFM Scfm 48EZ a 208/230-1-60 Ladder Wiring Diagram, Unit 48EZ-A 208/230-3-60 Connection Wiring Diagram, Unit 48EZ-A Cont. 208/230-3-60 Ladder Wiring Diagram, Unit 48EZ-A Cooling Charging Table-Subcooling Air Filter MaintenanceCleaning the Blower Motor and Wheel Indoor Blower and Motor Burner Ignition Limit SwitchInduced Draft combustion air Blower Assembly Main Burners Electrical Controls and Wiring Outdoor FanRefrigerant Circuit Gas Input Pressure SwitchesLoss of Charge Switch Indoor Airflow High-Pressure Switch Copeland Scroll Compressor Puron RefrigerantExplosion Hazard Unit Operation and Safety Hazard Refrigerant SystemCompressor Oil Troubleshooting START-UP ChecklistPuronr R-410A Quick Reference Guide Troubleshooting Guide Cooling or Heat Pump Heating Mode Symptom Cause Remedy Troubleshooting Guide-Heating Troubleshooting Guide-LED Error CodesLED OFF Preliminary Information Model no TemperaturesRemove and Store in Job Files III. START-UP Electrical Supply Voltage Compressor Amps