Desa GWN20TA, GWP20TA, GWP30TA, GWN30TA, WMP20A, WMN20A installation manual Installing Heater to Wall

Page 9

INSTALLATION

Continued

THERMOSTAT SENSING BULB

(Thermostat Models Only)

The thermostat sensing bulb has been placed below the heater.

1.Place clamp on thermostat sensing bulb as shown in Figure 5. Clamp is provided in hardware package.

2.Snap clamp into upper mounting hole as shown in Figure 5. Mounting hole is located on lower left edge on back of heater. Make sure the thermostat sensing bulb is point- ing up.

Clamp

Thermostat

Sensing Bulb

Figure 5 - Attaching Thermostat Sensing

Bulb

INSTALLING HEATER TO WALL

Mounting Bracket

Locate mounting bracket in heater carton. Re- move mounting bracket from heater carton.

Figure 6 - Mounting Bracket

Removing Front Panel Of Heater

1.Remove the four painted screws, two on each side of front panel.

2.Pull bottom of front panel forward, then out.

3.Remove any remaining packaging ma- terials.

Front Panel

Screw

 

Figure 7 - Removing Front Panel Of

Heater

Methods For Attaching Mounting Bracket

To Wall

Only use last hole on each end of mounting bracket to attach bracket to wall. These two holes are 14" apart from their centers. Attach mounting bracket to wall in one of two ways:

1.Attaching to wall stud

2.Attaching to wall anchor

Attaching to Wall Stud: This method provides the strongest hold. Insert mounting screws through mounting bracket and into wall studs.

Attaching to Wall Anchor: This method allows you to attach mounting bracket to hollow walls (wall areas between studs) or to solid walls (concrete or masonry).

Decide which method better suits your needs. Either method will provide a secure hold for the mounting bracket.

Marking Screw Locations

1.Tape mounting bracket to wall where heater will be located. Make sure mount- ing bracket is level.

WARNING: Maintain mini- mumclearancesshowninFigure 8, page 10. If you can, provide greater clearances from floor and joining wall.

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 Product Features Safety InformationLocal Codes UnpackingProviding Adequate Ventilation Air For Combustion VentilationUnusually Tight Construction Confined and Unconfined SpaceAIR for Combustion Ventilation Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation AIR InstallationCheck GAS Type Ventilation Air From Inside BuildingInstallation Items InstallationLocating Heater This heater is designed to be mounted on a wallInstalling Heater to Wall 20,000 Btu/Hr Models 30,000 Btu/Hr ModelsAttaching To Wall Stud Method Attaching To Wall Anchor MethodMounting heater to floor With optional floor kit Installing Bottom Mounting ScrewsHeater Wall Mounting Base Feet to HeaterTypical 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 ConnectionsOperating Heater For Your Safety Read Before LightingLighting Instructions Do not try to light any applianceOperating Heater Manual Lighting ProcedureTo Turn OFF GAS To Appliance Thermostat Control OperationInspecting Heater Pilot Flame PatternBurner Flame Pattern ODS/PILOT and Burner Cleaning MaintenanceBurner Pilot Air Inlet CabinetObserved Problem Possible Cause Remedy TroubleshootingTroubleshooting Slight smoke or odor during Observe minimum installaBlocked Burner orificeStatement above Gas leak. See WarningService Hints SpecificationsReplacement Parts Technical ServiceModels WMN20A, WMP20A, GWN20TA, GWP20TA, GWN30TA and GWP30TA Illustrated Parts BreakdownNJF 8C Parts ListEquipment Shutoff Valve GA5010 AccessoriesBase Kit GA4550 Electronic ignitor Kit GA435 Not ShownParts Centrals Keep this Warranty Warranty InformationModel Serial No Date of Purchase Industrial Drive P.O. Box 119344-01 Rev. B