Desa GWP30T, GWP20T, GWN20T, WMN20, GN30T, GP30T, GWN30T installation manual 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. 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

Illustrated Parts Breakdown and Parts List

26

Operating Heater

15

Accessories

30

Inpecting Heater

18

Parts Centrals

31

Cleaning and Maintenance

19

Warranty Information

Back Cover

2

www.desatech.com

107884-01H

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Contents What to do if YOU Smell GAS Table of Contents Safety Information Product Identification Product FeaturesLocal Codes UnpackingUnusually Tight Construction AIR for Combustion VentilationProviding Adequate Ventilation Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location Determining if You Have a Confined or Unconfined SpaceCheck GAS Type InstallationVentilation AIR Ventilation Air From Inside BuildingInstallation Items Locating HeaterInstalling 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 HeaterConnecting to GAS Supply Typical Inlet Pipe DiametersPropane/LP Checking GAS ConnectionsNatural Gas Pressure Testing Heater Gas Connections Open equipment shutoff valve see ,Lighting Instructions Manual Control Models For Your Safety Read Before LightingOperating Heater Shutting Off Heater Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off Burner Only pilot stays litThermostat Control Operation Burner Flame Pattern Inpecting HeaterPilot Flame Pattern Burner Pilot AIR Inlet Cleaning MaintenanceODS/PILOT and Burner CabinetTroubleshooting Observed Problem Possible Cause RemedyReplace burner orifice See Cleaning and Mainte Gas leak. See Warning Statement aboveGP30, GP30T SpecificationsGN30, GN30T WMN20, GWN20 Service Publications Replacement Parts Service HintsTechnical Service Parts Under WarrantyIllustrated Parts Breakdown Parts List NJF 8CGWN20T, GWP20T GWN30T, GWP30T Parts List FAN Kits GA3250T AccessoriesEquipment Shutoff Valve GA5010 Base KIT GA4550Parts Centrals Limited Warranty VENT-FREE Residential GAS Heaters Warranty InformationKeep this Warranty

GP30, GWN20T, GWN30T, GWN20, GWP20 specifications

Desa GWP20, GWP30T, GP30T, GN30T, and GP30 are advanced water heater models that stand out in the market for their efficiency, innovative technology, and user-friendly features. Each model is designed to cater to different consumer needs, offering reliable hot water solutions for residential and commercial applications.

The Desa GWP20 is a compact and efficient water heater that operates on a 20-gallon tank. Ideal for smaller households, it boasts fast heating capabilities and a durable construction that ensures longevity. Its user-friendly control panel allows for easy temperature adjustments, and its energy-saving mode helps reduce utility costs.

Moving up in capacity, the GWP30T features a 30-gallon tank, making it suitable for medium-sized households. This model incorporates a high-efficiency burner that maximizes heat output while minimizing gas consumption. With an upgraded insulation system, the GWP30T retains heat for longer periods, enhancing energy efficiency. The built-in diagnostics monitor performance, ensuring consistent operation and alerting users to any potential issues.

The GP30T is another 30-gallon model that emphasizes flexible installation options. It can be configured for various venting systems, making it adaptable for different home layouts. Its robust safety features, such as an automatic shut-off system, provide peace of mind for users. Additionally, the GP30T is equipped with a flame sensor for improved safety during operation.

For those seeking an efficient gas-powered unit, the GN30T delivers exceptional performance with a 30-gallon capacity. This model is designed to withstand the demands of larger households, featuring rapid recovery rates to provide a continuous supply of hot water. It utilizes advanced combustion technology that ensures efficient gas usage, striking the perfect balance between performance and energy costs.

Finally, the GP30 is a versatile water heater designed to meet diverse consumer needs. With a focus on sustainability, this model incorporates eco-friendly materials and technologies. The GP30 is packed with features that enhance its usability, such as customizable temperature settings, easy-to-read indicators, and a straightforward installation process.

In summary, Desa's GWP20, GWP30T, GP30T, GN30T, and GP30 water heaters are engineered for efficiency and reliability. Each model offers unique features tailored to specific user needs, from compact designs for smaller spaces to powerful systems for larger families. With an emphasis on modern technology and safety, Desa continues to be a leader in the water heating market.
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