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Carrier 48DL User Manual

Carrier 48DL
11 pages
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Carrier 48DL Specifications

General IconGeneral
Model48DL
RefrigerantR-410A
Compressor TypeScroll
Phase3
Dimensions (LxWxH)Varies depending on the specific model. Refer to product data sheet.
WeightVaries depending on the specific model. Refer to product data sheet.

Summary

Preinstallation Procedures

Examine for Shipment Damage

Check for damage during shipment and file a claim if found.

Installation and Unit Location

Unit Location Guidelines

General guidelines for unit placement, avoiding indoor spaces and contaminated air.

Piping and Gas Connections

Electrical and Control Wiring

Power Supply and Wiring

Checks for correct voltage, phase unbalance, and wiring practices.

Unit Connection and Start-Up

General Start-Up Checks

Pre-power checks including blower wheel support, gas valve, and fan tape.

Main Burners and Pilot Ignition

Automatic Pilot Operation

Sequence and procedure for automatic pilot ignition and main burner operation.

Glow Coil Pilot Ignition and Adjustment

Details on adjusting glow coil operation based on voltage and wire length.

Gas Unit Sequences and Operation

L.P. Gas Units Sequences

Automatic sequence for pilot ignition, gas valve, and fan start for LP units.

Operating Sequence - Heating Season

Describes the sequence of operations during heating mode.

Operating Sequence - Cooling Season

Describes the sequence of operations during cooling mode.

Shutdown and Checkout Procedures

Service and Maintenance

Chargemaster Operation

Detailed procedure for charging the refrigerant system using the Chargemaster device.

Troubleshooting

Heating Troubleshooting

Covers issues like burner not operating or inadequate heating performance.

Cooling Troubleshooting

Addresses problems like compressor failure or insufficient cooling.

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