Cleaning
WARNING: Turn off heater and let cool before cleaning.
CAUTION:Youmustkeepcon-
trol areas, burner and circulating
air passagewaysof heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding material, pet hair, etc.
WARNING: Failure to keep the primary air opening(s) of the burner(s) clean may result in sooting and property damage.
ODS/PILOT AND BURNER ORIFICE
Use a vacuum cleaner, pressurized air or small, soft bristled brush to clean.
Burner Pilot Air Inlet Hole
The primary air inlet holes allow the proper amount of air to mix with the gas. This provides a clean burning flame. Keep these holes clear of dust, dirt and lint. Clean these air inlet holes prior to each heating season. Blocked air holes will create soot. We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualified service person.
We also recommend that you keep the burner tube and pilot assembly clean and free of dust,
dirt, lint and pet hair. To clean these parts we recommend using compressed air no greater than 30 PSI. Your local computer store, hardware store or home center may carry compressed air in a can. If using compressed air in a can, please follow the directions on the can. If you don’t follow directions on the can, you could damage the pilot assembly.
1.Shut off the unit, including the pilot. Allow the unit to cool for at least thirty minutes.
2.Inspect burner, pilot for dust and dirt.
3.Blow air through the ports/slots and holes in the burner.
4.Never insert objects into the pilot tube.
Clean the pilot assembly also. A yellow tip on the pilot flame indicates dust and dirt in the pilot assembly. There is a small pilot air inlet hole about 2" from where the pilot flame comes out of the pilot assembly (see Figure 27). With the unit off, lightly blow air through the air inlet hole. You may blow through a drinking straw if compressed air is not available.
Pilot Assembly
Pilot Air Inlet
Figure 27 - Pilot Inlet Air (Propane/LP
Pilot Shown)
CABINET
Air Passageways
Use pressurized air to clean.
Exterior
Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabinet to remove dust.
Technical Service
You may have further questions about installa- tion, operation, or troubleshooting. If so, contact DESA Heating, LLC at
You can also visit DESA Heating, LLC’s web site at www.desatech.com.
Service Hints
When Gas Pressure Is Too Low
•pilot will not stay lit
•burner will have delayed ignition
•heater will not produce specified heat
•for propane/LP unit, propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, contact your local gas supplier.
Service Publications
A service manual is available at www.desat- ech.com. At any time while viewing heaters, click on “tech tips”.
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