Desa VP26A, VN18A, VP16A, VP26TA VN30A, VN30TA, VP16TA, VP16ITA, VP22ITA, VN18TA Table of Contents

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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

Troubleshooting

20

Local Codes

4

Specifications

23

Product Identification

4

Illustrated Parts Breakdown and Parts List

24

Unpacking

4

Replacement Parts

32

Product Features

4

Service Publications

32

Air For Combustion and Ventilation

5

Service Hints

32

Installation

7

Technical Service

32

Operating Heater

14

Accessories

33

Inspecting Heater

18

Parts Central

33

Cleaning and Maintenance

19

Warranty Information

Back Cover

2

www.desatech.com

113052-01D

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Contents VN30A, VN30TA, VP16ITA, VP22ITA Model VN30A ShownTable of Contents Safety Information Unpacking Product FeaturesLocal Codes Determining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationProviding Adequate Ventilation Ventilation AIR Ventilation Air From Inside BuildingCheck GAS Type InstallationInstallation Items Locating HeaterThermostat Models Only Installing Heater to WallThermostat Sensing Bulb Mounting Bracket5 Plaque Heaters Methods For Attaching Mounting Bracket To WallMarking Screw Locations Plaque HeaterInstalling Bottom Mounting Screws Placing Heater On Mounting BracketMounting Heater to Floor Connecting to GAS SupplyMounting Base Feet to Floor Where required by local code Mounting Base Feet to HeaterPropane/LP Checking GAS ConnectionsNatural Gas Test Pressures In Excess Of 1/2 Psig 3.5 kPa Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaLighting Instructions NON-THERMOSTAT Models For Your Safety Read Before LightingOperating Heater To Select Heating Level Manual Lighting ProcedureThermostat Models For Your Safety Read Before Lighting To Turn OFF GAS To ApplianceIgnitor Button Control Knob If pilot does not lightTurn thermostat control knob counter Shutting Off Heater Thermostat OperationPlaque Burner Flame Pattern Inspecting HeaterPilot Flame Pattern Burner Pilot AIR Inlet Cleaning MaintenanceODS/PILOT and Burner CabinetTroubleshooting Observed Problem Possible Cause RemedyODS/pilot lights but flame When heated, vapors from Gas leak. See WarningSpecifications Illustrated Parts Breakdown Parts List Cabinet Body Models VP16ITA and VP22ITA KEY Part Number VP16ITA VP22ITA Description QTY Illustrated Parts Breakdown and Parts List Burner Assembly Models VP16A and VN18ABurner Assembly Models VP26A and VN30A ODS/Pilot Burner Assembly VP26A, VN30ABurner Assembly Models VP16ITA and VP22ITA Burner Assembly VP22ITA Burner Assembly VP16ITABurner Assembly Models VP16TA, VN18TA, VP26TA and VN30TA Technical Service Replacement PartsService Publications Service Hints Parts Under WarrantyFAN Kits GA3250T AccessoriesParts Central Equipment Shutoff Valve GA5010113052-01D 113052-01D Limited Warranty Vanguard VENT-FREE Infrared GAS Heaters Warranty InformationKeep this Warranty