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Manuals
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Carrier Manuals
Air Conditioner
38AH024-034
Installation, start-up and service instructions manual
Carrier 38AH024-034 Installation, Start-Up And Service Instructions Manual
Air-cooled condensing units
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Contents
Table of Contents
Troubleshooting
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Table of Contents
Contents
Safety Considerations
Before Installation
Rigging
Notice to Riggers
Rigging Label
Physical Data
Installation
Mounting Unit
Compressor Mounting
Refrigerant Piping Connections
Refrigerant Piping Sizes
Single Suction Risers
Double Suction Risers
Maximum Liquid Lift Per Circuit
Safety Relief
General Wiring Notes
Field Connections
Power Supply
Electrical Data
Unbalanced 3-Phase Supply Voltage
Dimensional Drawing
Typical Wiring Schematic
Pre-Start-Up
Start-Up
System Check
Preliminary Checks
Adjust Refrigerant Charge
Check Compressor Oil Level
Timer Sequence Chart
Sequence of Operation
Single Air Handler,2-Stage Cool Thermostat
Two Air Handlers
Restart
Service
Access for Servicing
Fan Adjustment
Liquid Shutoff/Charging Valve
38AH Unit with Access Panels Removed
Winter Start Control
Head Pressure Control
Capacity Control Valve
Fan Cycling Controls
Troubleshooting
Compressor Does Not Run
Compressor Cycles on Low-Pressure Switch
Compressor Stops on Oil Pressure Switch
Compressor Running but Cooling Insufficient
Unit Operates too Long or Continuously
System Is Noisy
Compressor Loses Oil
Hot Liquid Line
Start-Up Checklist
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Physical Data
3
Troubleshooting
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This manual is also suitable for:
38ah024
38ah028
38ah034
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