OPERATING

INSTRUCTIONS

Continued

LIGHTING HEATER

1.Before attempting to light the heater check for gas leaks. Turn on the gas supply to the appliance and check all fittings and connec- tions for gas leaks using a mild soap and water solution. NEVER use a match to check for gas leaks. Should a gas leak occur, shut off the gas supply to the appliance immediately. Correct all leaks at once.

2.Use only the fuel intended for this appliance. Check the appliance rating plate for the correct fuel information.

3.Turn on the main gas supply.

4.Press and hold button on control valve.

5.Press button on piezo ignitor 6 to 8 times. Burner should light.

Thermocouple

Burner

 

Ignitor

Electrode

Piezo

Ignitor

Button

Control

Valve Button

Figure 2 - Heater Parts

To Match Light the Pilot

Hold a lit match to the burner face while pressing and holding the control valve button. After the burner ignites, keep button pressed for one (1) minute or until the burner stays lit after releasing button. DO NOT light gas at the burner orifice. DO NOT face heater when attempting to light. Always stand to the side of the unit when lighting.

CAUTION: When lighting burner with a match or taper, light at bottom of screen. Not at orifice.

Note: In cases where long runs of gas supply lines have been installed ahead of the appliance, it may be necessary to bleed trapped air out of supply lines before lighting pilot. New installations generally require bleed of supply lines. Wait a minimum of five minutes after bleeding supply lines before attempting to light heater.

IMPORTANT: DO NOT attempt to adjust the main burner input using the main gas supply valve. This may cause the pilot and thermocouple to shut down the burner.

SHUTTING OFF HEATER

1.Close propane gas supply cylinder valve.

2.Observe the burner until flame is extin- guished.

3.Listen for closure of the safety valve.

IMPORTANT: DO NOT reopen the propane gas supply cylinder valve before the safety valve closes.

CLEANING AND

MAINTENANCE

WARNING: Never attempt to service heater while it is connected to propane supply, operating or hot. Severe burns can occur.

1.Turn heater off and let cool at least 20 minutes before cleaning.

2.Keep heater clean. Clean heater annually or as needed to remove dust and debris. If heater is dirty or dusty, clean heater with a damp cloth. Use household cleaners on difficult spots.

3.Inspect heater before each use. Check connec- tions for leaks. Apply mixture of liquid soap and water to connections. Bubbles forming show a leak. Correct all leaks at once.

4.Clean inside of heater using compressed air. Blow air back and forth along the entire burner face until all dust has been dislodged from surface of reverberator and screen. Blow air through venturi from the control end of heater.

5.Inspect hose/regulator assembly before each use. If hose is highly worn or cut, replace.

6.Have heater inspected yearly by a qualified service agency.

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Desa 35-R owner manual Cleaning Maintenance, Lighting Heater, Shutting OFF Heater