Carrier 48EZ(N)-A guide

48EZ A--

A10208C

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

29

Image 29

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

Contents

Safety Considerations Table of Contents Introduction Receiving and InstallationCheck Equipment Provide Unit Support 48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Number Roof Curb Dimensions Provide Clearances Field Fabricate DuctworkRig and Place Unit Inspection Install Gas Piping Install Flue HoodConnect Condensate Drain Rigging/Lifting of Unit See Fig Sediment Trap Fire or Explosion Hazard Configuring Units for Downflow Vertical Discharge Install Duct Connections Physical Data Unit 48EZ-A Heating Inputs Physical Data Unit 48EZ-A Cont’dMaximum Gas Flow Capacity Special Procedures for 208-V Operation Install Electrical ConnectionsHigh-Voltage Connections Unit Component Damage Hazard PRE-START-UP Balance Point Setting-Thermidistat or Hybrid ThermostatControl Voltage Connections Transformer Protection START-UP Start-up Heating and Make Adjust- mentsCheck for Refrigerant Leaks Unit Sequence of Operation Unit Damage Hazard Adjust Gas InputCheck Gas Input Start-up Cooling and Make Adjust- ments Indoor Airflow and Airflow Adjustments Checking and Adjusting Refrigerant ChargeGas Heating Fan Speed Set-up Unit Operation Hazard Color Coding for Indoor Fan Motor Leads Two Cooling Fan Speeds Set-up Dehumidification feature usedContinuous Fan Operation Range Speed Color Dry Coil Air Delivery* Horizontal Unit 48EZ-A24-60Unit Heating Rise Motor 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 Unit Standard CFM Scfm Size Horizontal and Downflow Filter Pressure Drop Table IN. W.CDownflow Cooling Standard CFM Scfm Economizer + Tons 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 Cleaning the Blower Motor and Wheel MaintenanceAir Filter Indoor Blower and Motor Induced Draft combustion air Blower Assembly Limit SwitchBurner Ignition Main Burners Refrigerant Circuit Electrical Controls and WiringOutdoor Fan Loss of Charge Switch Pressure SwitchesGas Input Indoor Airflow Explosion Hazard High-Pressure SwitchCopeland Scroll Compressor Puron Refrigerant Compressor Oil Unit Operation and Safety HazardRefrigerant System Puronr R-410A Quick Reference Guide TroubleshootingSTART-UP Checklist Symptom Cause Remedy Troubleshooting Guide Cooling or Heat Pump Heating Mode LED OFF Troubleshooting Guide-HeatingTroubleshooting Guide-LED Error Codes Remove and Store in Job Files TemperaturesPreliminary Information Model no III. START-UP Electrical Supply Voltage Compressor Amps