Carrier 48SD User Manual

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Owner's Information Manual
Fig. 1 - Unit 48SD
A99338
NOTE TO EQUIPMENT OWNER:
For your convenience, please record the model and serial numbers of your new equipment in the spaces
provided. This information, along with the installation data and dealer contact information, will be helpful
should your system require maintenance or service.
UNIT INFORMATION
Model #
Serial #
ACCESSORIES (List type and model #)
INSTALLATION INFORMATION
Date Installed
DEALERSHIP CONTACT INFORMATION
Company Name
Address
Phone Number
Technician Name
NOTE TO INSTALLER:
This manual must be left with the equipment owner,

Carrier 48SD Specifications

General

Brand	Carrier
Model	48SD
Category	Air Conditioner
Language	English

Summary

Safety Considerations and Unit Introduction

General Safety Guidelines and Hazard Warnings

Covers general safety precautions, signal words, and specific hazard warnings like fire, explosion, and electrical shock.

Starting and Shutting Off the Unit

Step-by-step instructions for starting and shutting down the gas heat/electric cooling unit.

Maintenance and Service Procedures

Routine Maintenance and Owner Care

Guidance on routine maintenance tasks for owners, emphasizing safety and unit area clearance.

Air Filter Maintenance

Instructions for checking, cleaning, or replacing air filters, including filter size data.

Detailed Component Maintenance

Fan and Motor Maintenance

Checks for fan wheels, housings, and motor shaft bearings, recommending annual dealer service.

Heat Exchanger and Coil Servicing

Guidance on inspecting the heat exchanger and cleaning indoor/outdoor coils by qualified personnel.

Condensate Drain and Electrical Systems

Maintenance for condensate drain lines and checks for electrical controls and wiring.

Refrigerant Circuit and Unit Panels

Checks for refrigerant leaks and ensuring unit panels are securely fastened after service.

Regular Dealer Maintenance Checklist

A checklist of items for annual or biennial inspection by a trained service technician.

Troubleshooting and Warranty Information

Pre-Service Checks for Owners

Basic troubleshooting steps for owners to check before calling for service, like filters and thermostat settings.

In Case of Trouble

Instructions on what to do if the unit fails to operate or perform satisfactorily, including contacting the dealer.