48EZ a | Carrier 48EZ(N)-A specification

48EZ A--

A10207C

Fig. 14 - 208/230-1-60 Connection Wiring Diagram, Unit 48EZ-A

27

Image 27

Carrier 48EZ(N)-A installation instructions 48EZ a

Contents

Safety Considerations Table of Contents Provide Unit Support Receiving and InstallationIntroduction Check Equipment 48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Number Roof Curb Dimensions Inspection Field Fabricate DuctworkProvide Clearances Rig and Place Unit Rigging/Lifting of Unit See Fig Install Flue HoodInstall Gas Piping Connect Condensate Drain Sediment Trap Fire or Explosion Hazard Configuring Units for Downflow Vertical Discharge Install Duct Connections Physical Data Unit 48EZ-A Physical Data Unit 48EZ-A Cont’d Maximum Gas Flow CapacityHeating Inputs Unit Component Damage Hazard Install Electrical ConnectionsSpecial Procedures for 208-V Operation High-Voltage Connections Transformer Protection Balance Point Setting-Thermidistat or Hybrid ThermostatPRE-START-UP Control Voltage Connections Unit Sequence of Operation Start-up Heating and Make Adjust- mentsSTART-UP Check for Refrigerant Leaks Adjust Gas Input Check Gas InputUnit Damage Hazard Start-up Cooling and Make Adjust- ments Unit Operation Hazard Checking and Adjusting Refrigerant ChargeIndoor Airflow and Airflow Adjustments Gas Heating Fan Speed Set-up 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 Cooling Standard CFM Scfm Horizontal and Downflow Filter Pressure Drop Table IN. W.CUnit Standard CFM Scfm Size Downflow Cooling Standard CFM Scfm Economizer + Tons 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 Indoor Blower and Motor MaintenanceCleaning the Blower Motor and Wheel Air Filter Main Burners Limit SwitchInduced Draft combustion air Blower Assembly Burner Ignition Electrical Controls and Wiring Outdoor FanRefrigerant Circuit Indoor Airflow Pressure SwitchesLoss of Charge Switch Gas Input 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 Symptom Cause Remedy Troubleshooting Guide Cooling or Heat Pump Heating Mode Troubleshooting Guide-Heating Troubleshooting Guide-LED Error CodesLED OFF III. START-UP Electrical Supply Voltage Compressor Amps TemperaturesRemove and Store in Job Files Preliminary Information Model no