Carrier 48GP Guide User Manual

HEATING & COOUNG
48GP
Single-Package Gas Heating / Electric Cooling Units
with Puron® (R-410A) Refrigerant
Visit www.carrier.com
A Guide To Operating and Maintaining Your
Single-Package Gas Heating / Electric Cooling Units
NOTE TO INSTALLER
This manual should be left with the equipment owner.
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If the information in this manual is not followed exactly, a fire
or explosion may result causing property damage, personal
i11iury or loss of life.
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Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliances.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• hmnediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the
tire department.
Installation and selMce must be pert\_rmed by a
qualified installer, selaTiceagency or the as sup-
plier.
Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the
unit and to replace any part of the control system which has
been under water. Failure to follow this warning could result
in electrical shock, fire, serious injury, or death.
Before performing recommended maintenance, be sure the
main power switch to unit is mined off. Electric shock could
cause serious injury or death.
Your combination heating.cooling unit is equipped with an auto-
matic direct spark ignition and power combustion blower.
Fig. 1 -- Unit 48GP with ard Louvered Grille
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 101 Catalog No 534-80141 Printed in U.S.A Form OM48-19 Pg 1 1-03 Replaces: OM48-14

Carrier 48GP Guide Specifications

General

Brand	Carrier
Model	48GP Guide
Category	Air Conditioner
Language	English

Summary

Carrier 48GP Unit Overview and Safety

Important Installation Note

Manual should be left with the equipment owner for reference.

Critical Safety Warnings

Covers fire, explosion, electrical shock, and injury risks associated with improper operation and maintenance.

Operating the Unit

How to Light the Unit

Step-by-step instructions for safely starting the heating unit, including thermostat and valve settings.

How to Shut Off the Unit

Instructions for safely turning off the unit, including gas and electrical supply sequence.

Routine Maintenance and Care

Air Filter Maintenance

Guidance on checking, cleaning, or replacing air filters for optimal unit performance and motor protection.

Heat Exchanger Inspection

Requires qualified personnel for checking and cleaning to ensure efficient heating operation.

Fan and Motor Checks

Periodic checks of fan wheels, housings, and motor bearings. Lubrication not required.

Coil Cleaning and Drainage

Coils and condensate drain lines require cleaning by qualified personnel annually.

Combustion Area Inspection

Visual inspection before heating season for dirt, soot, or scale to maintain efficiency.

Professional Servicing and Troubleshooting

Unit Panel Security

Ensure all panels are fastened securely after maintenance to prevent rain ingress and airflow disruption.

Comprehensive Dealer Maintenance

Detailed inspection list for a qualified technician covering all unit components and safety aspects.

Troubleshooting Common Issues

Checklists for insufficient heating/cooling or unit not operating to identify simple user-fixable issues.

Warranty Information

Details on the unit's warranty coverage, to be read carefully by the owner.