INSPECTING BURNER
Continued
If burner flame pattern is incorrect, as shown in Figure 27, page 14
•turn heater off (see To Turn Off Gas to Appliance, page 11 or 14 depending on your model)
•see Troubleshooting, pages 16 through 18
BURNER FLAME PATTERN
INFRARED MODELS
Figure 28 shows a correct burner flame pattern. Figure 29 shows an incorrect burner flame pattern.
If burner flame pattern is incorrect, as shown in Figure 29
•turn heater off (see To Turn Off Gas to Appliance, page 12)
•see Troubleshooting, pages 16 through 18
Figure 28 - Correct Burner | Figure 29 - Incorrect Burner |
Flame Pattern (Dual Burner | Flame Pattern (Dual Burner |
Shown) | Shown) |
CLEANING AND
MAINTENANCE
WARNING: Turn off heater and let cool before cleaning.
CAUTION: You must keep control areas, burner, and circulating air passageways of heater clean. In- spect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need more frequent cleaning due to exces- sive lint from carpeting, bedding material, pet hair, etc.
ODS/PILOT AND BURNER ORIFICE
•Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean.
INSPECTING BURNER | 15 |
Burner Flame Pattern Blue Flame Models (Cont.) | |
Burner Flame Pattern Infrared Models |
|
CLEANING AND MAINTENANCE |
|
ODS/Pilot and Burner Orifice |
|
Cleaning Burner Pilot Air Inlet Hole |
|
Cabinet |
|
|
CLEANING 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. You can use a vacuum cleaner in the blow position. 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.
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 two inches from where the pilot flame comes out of the pilot assembly (see Figure 30). 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 30 - Pilot Inlet Air (Propane/LP Pilot Shown)
CABINET
Air Passageways
• Use a vacuum cleaner or pressurized air to clean.
Exterior
•Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabinet to remove dust.
For more information, visit www.desatech.com
