Carrier
48EZ(N)-A
installation instructions
208/230-3-60 Connection Wiring Diagram, Unit 48EZ-A
Troubleshooting
Install
Unit Heating Rise Motor Wire
Dimension
Maintenance
Symptom Cause Remedy
Adjust Gas Input
Temperatures
Limit Switch
Page 29
48EZ
A--
A10208C
Fig. 15 -
208/230-3-60
Connection Wiring Diagram, Unit
48EZ-A
29
Page 28
Page 30
Image 29
Page 28
Page 30
Contents
Safety Considerations
Table of Contents
Introduction
Receiving and Installation
Check Equipment
Provide Unit Support
48EZ-A24-36 Unit Dimensions
48EZ-A42-60 Unit Dimensions
Number
Roof Curb Dimensions
Provide Clearances
Field Fabricate Ductwork
Rig and Place Unit
Inspection
Install Gas Piping
Install Flue Hood
Connect 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’d
Maximum Gas Flow Capacity
Special Procedures for 208-V Operation
Install Electrical Connections
High-Voltage Connections
Unit Component Damage Hazard
PRE-START-UP
Balance Point Setting-Thermidistat or Hybrid Thermostat
Control Voltage Connections
Transformer Protection
START-UP
Start-up Heating and Make Adjust- ments
Check for Refrigerant Leaks
Unit Sequence of Operation
Unit Damage Hazard
Adjust Gas Input
Check Gas Input
Start-up Cooling and Make Adjust- ments
Indoor Airflow and Airflow Adjustments
Checking and Adjusting Refrigerant Charge
Gas Heating Fan Speed Set-up
Unit Operation Hazard
Color Coding for Indoor Fan Motor Leads
Two Cooling Fan Speeds Set-up Dehumidification feature used
Continuous Fan Operation
Range Speed Color
Dry Coil Air Delivery* Horizontal Unit 48EZ-A24-60
Unit 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.C
Downflow 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
Maintenance
Air Filter
Indoor Blower and Motor
Induced Draft combustion air Blower Assembly
Limit Switch
Burner Ignition
Main Burners
Refrigerant Circuit
Electrical Controls and Wiring
Outdoor Fan
Loss of Charge Switch
Pressure Switches
Gas Input
Indoor Airflow
Explosion Hazard
High-Pressure Switch
Copeland Scroll Compressor Puron Refrigerant
Compressor Oil
Unit Operation and Safety Hazard
Refrigerant System
Puronr R-410A Quick Reference Guide
Troubleshooting
START-UP Checklist
Symptom Cause Remedy
Troubleshooting Guide Cooling or Heat Pump Heating Mode
LED OFF
Troubleshooting Guide-Heating
Troubleshooting Guide-LED Error Codes
Remove and Store in Job Files
Temperatures
Preliminary Information Model no
III. START-UP Electrical Supply Voltage Compressor Amps
Related pages
All Diagram page
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HP Compaq NX6310
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