Table of Contents | Desa GMP16T, GMP26T, GMP20BT, GMP30BT specification

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. Provisions 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,* permanently located, manufactured (mobile) home, where not prohibited by local codes.

This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.

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

TABLE OF CONTENTS

Safety Information	3	Troubleshooting		20
Local Codes	4	Specifications		24
Product Identification	4	Service Hints		25
Unpacking	4	Technical Service		25
Product Features	4	Service Publications		25
Air For Combustion and Ventilation	5	Replacement Parts		25
Installation	7	Accessories		25
Operating Heater	14	Illustrated Parts Breakdown and Parts List		26
Inspecting Heater	17	Warranty Information	Back Cover
Cleaning and Maintenance	19

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Desa GMP16T, GMP26T, GMP20BT, GMP30BT installation manual Table of Contents

Contents

What to do if YOU Smell GAS Table of Contents Safety Information Safety Information Product Identification Local Codes Unusually Tight Construction AIR for Combustion VentilationProviding Adequate Ventilation Confined and Unconfined Space Determining FRESH-AIR Flow for Heater Location Determining if You Have a Confined or Unconfined Space Check GAS Type InstallationVentilation AIR Ventilation Air From Inside Building Installation Items Locating Heater Installing Heater to Wall Placing Heater On Mounting Bracket 20,000 Btu/Hr ModelsAttaching To Wall Anchor Method Mounting Heater to Floor with Optional Floor KIT Installing Bottom Mounting ScrewsMounting Base Feet to Floor Where required by local code Mounting Base Feet to Heater Connecting to GAS Supply Typical Inlet Pipe Diameters Test Pressures In Excess Of 1/2 Psig 3.5 kPa Pressure Testing GAS Supply Piping SystemChecking GAS Connections Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Operating Heater For Your Safety Read Before LightingPressure Testing Heater GAS Connections Manual Control Models Lighting Instructions To Turn OFF GAS To Appliance Manual Lighting ProcedureTo Select Heating Level for Infrared Heaters Thermostat Controlled Models Lighting Instructions Pilot Flame Pattern Inspecting HeaterThermostat Control Operation Control Knob GMP16T Burner Flame Pattern for Infrared Heaters Inpecting HeaterBurner Flame Pattern for Blue Flame Heaters Burner Pilot AIR Inlet Cleaning MaintenanceODS/PILOT and Burner Cabinet Troubleshooting Observed Problem Possible Cause Remedy Pressed See Cleaning and Mainte Gas leak. See Warning Statement above GMP16 GMP26 GMP16T GMP26T SpecificationsGMP30BT GMP20BT Service Publications Replacement Parts Service HintsTechnical Service Accessories Illustrated Parts Breakdown Models GMP16, GMP26, GMP16T, and GMP26T Parts List Parts AVAILABLE-NOT Shown Illustrated Parts Breakdown and Parts List Models GMP16 and GMP26 ODS/Pilot Burner Assembly GMP16T Models GMP16T and GMP26T Models GMP20BT and GMP30BT Parts Available not Shown Limited Warranty VENT-FREE Residential GAS Heaters Warranty InformationKeep this Warranty