Desa WMP20A, GWP20TA, GWP30TA, GWN30TA, GWN20TA, WMN20A Gas leak. See Warning, Statement above

Page 22

TROUBLESHOOTING

Continued

WARNING: 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. Fol- low the gas supplier’s instructions.

If you cannot reach your gas supplier, call the fire department.

IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning sup- plies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air and create odors.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

Heater produces unwanted

1.

Heater burning vapors from

1.

Ventilate room. Stop us-

odors

 

paint, hair spray, glues, etc.

 

ing odor causing products

 

 

(see IMPORTANT state-

 

while heater is running

 

 

ment above)

 

 

 

2.

Low fuel supply (propane/

2.

Refill supply tank

 

 

LP gas only)

3.

Locate and correct all leaks

 

3.

Gas leak. See Warning

 

(see Checking Gas Con-

 

 

statement above

 

nections, page 13)

 

 

 

 

 

Heater shuts off in use (ODS

1.

Not enough fresh air is

1.

Open window and/or door

operates)

 

available

 

for ventilation

 

2.

Low line pressure

2.

Contact local natural or

 

 

 

 

propane/LP gas company

 

3.

ODS/pilot is partially

3.

Clean ODS/pilot (see Cleaning

 

 

clogged

 

and Maintenance, page 18)

 

 

 

 

 

Gas odor even when control

1.

Gas leak. See Warning

1.

Locate and correct all leaks

knob is in OFF position

 

statement above

 

(see Checking Gas Con-

 

 

 

 

nections, page 13)

 

2.

Control valve defective

2.

Replace control valve

 

 

 

 

 

Gas odor during combustion

1.

Foreign matter between

1.

Take apart gas tubing and

 

 

control valve and burner

 

remove foreign matter

 

2.

Gas leak. See Warning

2.

Locate and correct all leaks

 

 

statement above

 

(see Checking Gas Con-

 

 

 

 

nections, page 13)

 

 

 

 

 

Moisture/condensation no-

1.

Not enough combustion/

1.

Refer to Air for Combustion

ticed on windows

 

ventilation air

 

and Ventilation require-

 

 

 

 

ments (page 5)

22

www.desatech.com

119344-01B

Image 22
Contents What to do if YOU Smell GAS Models GWN20TA, GWP20TA, GWN30TA, GWP30TA, WMN20a, WMP20aTable of Contents Safety InformationSafety Information Local Codes Safety InformationProduct Features UnpackingUnusually Tight Construction Air For Combustion VentilationProviding Adequate Ventilation Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Check GAS Type InstallationVentilation AIR Ventilation Air From Inside BuildingLocating Heater InstallationInstallation Items This heater is designed to be mounted on a wallInstalling Heater to Wall Attaching To Wall Stud Method 30,000 Btu/Hr Models20,000 Btu/Hr Models Attaching To Wall Anchor MethodHeater Wall Installing Bottom Mounting ScrewsMounting heater to floor With optional floor kit Mounting Base Feet to HeaterConnecting to GAS Supply Typical Inlet Pipe DiametersChecking GAS Connections Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaPressure Testing Heater Gas Connections Correct all leaks at onceLighting Instructions For Your Safety Read Before LightingOperating Heater Do not try to light any applianceTo Turn OFF GAS To Appliance Manual Lighting ProcedureOperating Heater Thermostat Control OperationPilot Flame Pattern Inspecting HeaterBurner Flame Pattern Burner Pilot Air Inlet Cleaning MaintenanceODS/PILOT and Burner CabinetTroubleshooting Observed Problem Possible Cause RemedyTroubleshooting Blocked Observe minimum installaSlight smoke or odor during Burner orificeGas leak. See Warning Statement aboveReplacement Parts SpecificationsService Hints Technical ServiceIllustrated Parts Breakdown Models WMN20A, WMP20A, GWN20TA, GWP20TA, GWN30TA and GWP30TAParts List NJF 8CBase Kit GA4550 AccessoriesEquipment Shutoff Valve GA5010 Electronic ignitor Kit GA435 Not ShownParts Centrals Model Serial No Date of Purchase Warranty InformationKeep this Warranty Industrial Drive P.O. Box 119344-01 Rev. B