Desa 35-R - Manual (Page 6)

www.desatech.com 117296-01A 6
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.
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.
OPERATING
INSTRUCTIONS
Continued
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.
Figure 2 - Heater Parts
Control
Valve Button
Piezo
Ignitor
Button
Ignitor
Electrode
Thermocouple
Burner