Desa GWN20TA, GWP20TA, GWP30TA, GWN30TA, WMP20A, WMN20A installation manual Safety Information

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Safety Information

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Natural and Propane/LP Gas: Natural and pro- pane/LP gases are fuel gases. Fuel gases are odorless. An odor-making agent is added to fuel gases. The odor helps you detect a fuel gas leak. However, the odor added to fuel gas can fade. Fuel gas may be present even though no odor exists.

Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this heater.

WARNING: Any change to this heater or its controls can be dangerous.

WARNING: Do not use a blower insert, heat exchanger insert or other accessory not ap- proved for use with this heater.

Due to high temperatures, the appliance should be located out of traffic and away from furniture and draperies.

Do not place clothing or other flammable material on or near the appliance. Never place any objects on the heater.

Surface of heater becomes very hot when running heater. Keep children and adults away from hot surface to avoid burns or clothing ignition. Heater will remain hot for a time after shut- down. Allow surface to cool before touching.

Carefully supervise young chil- dren when they are in the same room with heater.

Make sure grill guard is in place before running heater.

Keep the appliance area clear and free from combustible ma- terials, gasoline and other flam- mable vapors and liquids.

1.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.

2.Do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply tank(s) outdoors.

3.This heater shall not be installed in a bedroom or bathroom.

4.If you smell gas

shut off gas supply

do not try to light any appliance

do not touch any electrical switch; do not use any phone in your building

immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions

if you cannot reach your gas supplier, call the fire department

5.This heater needs fresh, outside air ventila- tion to run properly. This heater has an Oxy- gen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if not enough fresh air is available. See Air for Combustion and Ventilation, page 5.

6.Keep all air openings in front and bottom of heater clear and free of debris. This will insure enough air for proper combustion.

7.If heater shuts off, do not relight until you provide fresh, outside air. If heater keeps shutting off, have it serviced.

8.Do not run heater

where flammable liquids or vapors are used or stored

under dusty conditions

9.Before using furniture polish, wax, carpet cleaner or similar products, turn heater off. If heated, the vapors from these products may create a white powder residue within burner box or on adjacent walls or furniture.

10.Do not use heater if any part has been under water. Immediately call a qualified service technician to inspect the room heater and to replace any part of the control system and any gas control which has been under water.

11.Turn off and let cool before servicing. Only a qualified service person should service and repair heater.

119344-01Bwww.desatech.com

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Contents Models GWN20TA, GWP20TA, GWN30TA, GWP30TA, WMN20a, WMP20a What to do if YOU Smell GASSafety Information Table of ContentsSafety Information Unpacking Safety InformationProduct Features Local CodesConfined and Unconfined Space Air For Combustion VentilationProviding Adequate Ventilation Unusually Tight ConstructionAIR for Combustion Ventilation Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside Building InstallationVentilation AIR Check GAS TypeThis heater is designed to be mounted on a wall InstallationInstallation Items Locating HeaterInstalling Heater to Wall Attaching To Wall Anchor Method 30,000 Btu/Hr Models20,000 Btu/Hr Models Attaching To Wall Stud MethodMounting Base Feet to Heater Installing Bottom Mounting ScrewsMounting heater to floor With optional floor kit Heater WallTypical Inlet Pipe Diameters Connecting to GAS SupplyTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Checking GAS ConnectionsCorrect all leaks at once Pressure Testing Heater Gas ConnectionsDo not try to light any appliance For Your Safety Read Before LightingOperating Heater Lighting InstructionsThermostat Control Operation Manual Lighting ProcedureOperating Heater To Turn OFF GAS To ApplianceInspecting Heater Pilot Flame PatternBurner Flame Pattern Cabinet Cleaning MaintenanceODS/PILOT and Burner Burner Pilot Air InletObserved Problem Possible Cause Remedy TroubleshootingTroubleshooting Burner orifice Observe minimum installaSlight smoke or odor during BlockedStatement above Gas leak. See WarningTechnical Service SpecificationsService Hints Replacement PartsModels WMN20A, WMP20A, GWN20TA, GWP20TA, GWN30TA and GWP30TA Illustrated Parts BreakdownNJF 8C Parts ListElectronic ignitor Kit GA435 Not Shown AccessoriesEquipment Shutoff Valve GA5010 Base Kit GA4550Parts Centrals Industrial Drive P.O. Box 119344-01 Rev. B Warranty InformationKeep this Warranty Model Serial No Date of Purchase