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 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 5 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

State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts.

Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit.

Vent-free gas products are prohibited for bedroom and bathroom installation in the Common- wealth of Massachusetts.

TABLE OF CONTENTS

Safety Information

3

Service Hints

16

Local Codes

4

Technical Service

16

Product Identification

4

Troubleshooting

17

Unpacking

4

Illustrated Parts Breakdown

20

Product Features

4

Parts List

21

Air For Combustion and ventilation

5

Specifications

22

Installation

7

Accessory

22

Operating Heater

13

Service Publications

22

Inspecting Heater

15

Replacement Parts

22

Cleaning and Maintenance

16

Parts Central

23

2

www.desatech.com

113261-01C

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Desa VTP22R, VTN25R installation manual Table of Contents