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 Damper Clamp Accessory for Vented Operation

13

Installing Heater Base Assembly

14

Connecting to Gas Supply

16

Checking Gas Connections

17

Installing Logs

19

Operating Heater (Thermostat-Controlled Models)

20

Operating Heater (Manually-Controlled Models)

22

Inspecting Burners

24

Cleaning and Maintenance

25

Troubleshooting

25

Optional Positioning of Thermostat Sensing Bulb

29

Technical Service

31

Specifications

31

Service Hints

31

Replacement Parts

32

Accessories

33

Illustrated Parts Lists

34-37

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 NATURAL GAS LOG HEATER installation manual Contents Safety Information