CONTENTS

SAFETY INFORMATION

2

SECTION

PAGE

Safety Information

2

Product Identification

4

Local Codes

4

Unpacking

4

Product Features

4

Air for Combustion and Ventilation

5

Installing

8

Check Gas Type

8

Installation and Clearances (Vent-Free Operation Only)

9

Installing Heater Base Assembly

13

Connecting to Gas Supply

15

Checking Gas Connections

16

Installing Logs

18

Operating Heater

19

Inspecting Burners

22

Cleaning and Maintenance

23

Troubleshooting

23

Technical Service

27

Specifications

27

Service Hints

27

Wiring Diagram

27

Replacement Parts

28

Parts Central

28

Accessories

29

Illustrated Parts Lists

30

Warranty Information

Back Cover

WARNINGS

IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.

DANGER

Carbon monoxide poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nausea. If you have these signs, the heater may not be working properly. Get fresh air at once! Have heater serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart or lung disease or anemia, those under the influence of alcohol, and those at high altitudes.

Natural Gas: Natural gas is odorless. An odor-making agent is added to the gas. The odor helps you detect a gas leak. However, the odor added to the gas can fade. Gas may be present even though no odor exists.

Make certain you read and understand all Warnings. Keep this manual for reference. It is your guide to safe and proper operation of this heater.

Safety Information continues on next page

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Desa CGD3924NR installation manual Contents Safety Information