WARNING: Improper installation, adjustment, altera- tion, service or maintenance can cause injury or prop- erty damage. Refer to this manual for correct installation and operational procedures. For assistance or addi- tional information consult a qualified installer, service agency or the gas supplier.

WARNING: This appliance is for installation only in

asolid-fuel burning masonry or UL127 factory-built fireplace or in a listed ventless firebox enclosure. It is design-certified for these installations in accordance with ANSI Z21.11.2. Exception: Do not install this appli- ance in a factory-built fireplace that includes instruc- tions stating it has not been tested or should not be used with unvented gas logs.

WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provi- sions for adequate combustion and ventilation air must be provided. Refer to Air for Combustion and Ventilation section on page 6 of this manual.

This appliance may be installed in an aftermarket,* per- manently located, manufactured (mobile) home, where not prohibited by local codes.

This appliance is only for use with the type of gas indi- cated on the rating plate. This appliance is not convert- ible for use with other gases.

* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer

TABLE OF CONTENTS

Safety Information

3

Wiring Diagram

20

Product Identification

5

Cleaning and Maintenance

21

Local Codes

5

Troubleshooting

22

Unpacking

5

Specifications

26

Optional Remote Control Accessories

5

Replacement Parts

26

Product Features

5

Service Hints

26

Air For Combustion and Ventilation

6

Technical Service

26

Installation

8

Accessories

27

Operating Heater

16

Illustrated Parts Breakdown and Parts List

28

Inspecting Burner

20

Warranty Information

Back Cover

2

www.desatech.com

114744-01C

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Desa SBJ24VPA, SMA18VNA, SMA24VPA, SBJ18VNA installation manual Table of Contents