Carrier 48GS - User Manual

A Guide To Operating and Maintaining Your
Gas Heating/Electric Cooling Unit
NOTE TO INSTALLER
This manual should be left with the equipment owner.
FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the vicin-
ity of this or any other appliance.
Improper installation, adjustment, alteration, serv-
ice or maintenance can cause injury or prop-
erty damage. Refer to this manual. For assistance
or additional information, consult a qualified in-
staller, service agency, or the gas supplier.
FOR YOUR SAFETY
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.
• Immediately call your gas supplier from
a neighbor’s phone. Follow the gas sup-
plier’s instructions.
• If you cannot reach your gas supplier,
call the fire department.
Before performing recommended maintenance,
be sure gas supply and main power switch to
unit are turned off. Electrical shock could cause
personal injury.
Model 48GS with Standard Wire Grille
Model 48GX with Optional Louvered Grille
48GS,GX
Combination Gas Heating/
Electric Cooling Units
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 1a 6a
PC 111 Catalog No. 534-742 Printed in U.S.A. Form 48GS,GX-1SO Pg 1 3-99 Replaces: 48GS-1SO

Carrier 48GS Specifications

General

Brand	Carrier
Model	48GS
Category	Gas Heater
Language	English

Summary

Safety Precautions

Flammable Liquid Storage Warning

Warning against storing or using gasoline or flammable liquids near the appliance.

Gas Leak Emergency Procedure

Instructions on what to do if you smell gas, including contacting the gas supplier.

Maintenance Safety Precautions

Warning to turn off gas supply and power before performing maintenance.

Unit Operation Guide

How to Light the Unit

Step-by-step instructions for safely igniting the gas heating section of the unit.

How to Shut the Unit Off

Step-by-step instructions for safely powering down the unit.

Routine Maintenance and Care

Owner Maintenance Responsibilities

Guidance for equipment owners on tasks they can perform for maintenance.

Air Filter Maintenance

Instructions for checking, cleaning, or replacing indoor air filters.

Component Checks (Fans, Coils, Drains)

Guidance on inspecting fan motors, coils, and condensate drains.

Advanced Maintenance and Inspections

Combustion and Vent System Inspection

Visual inspection of burners, heat exchanger, and vent system for dirt or scale.

Regular Dealer Maintenance Schedule

List of annual inspections recommended for a qualified service technician.

Electrical and Refrigerant System Checks

Checks for proper electrical wiring, component connections, and refrigerant leaks.

Troubleshooting Common Issues

Pre-Service Checks for Easy Solutions

Checks for airflow, thermostat settings, and power supply before calling for service.

Procedure for Unresolved Problems

Steps to take if issues persist, including contacting the dealer with unit details.

Product Warranty Details

Limited Warranty Coverage and Duration

Details on the one-year limited warranty and extended warranties for compressor and heat exchanger.

Warranty Exclusions and Limitations

Information on what is not covered by the warranty, including labor and consequential damages.