INSPECTING
BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 20 shows a correct pilot flame pattern. Figure 21 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down. If pilot flame pattern is incorrect, as shown in Figure 21:
•turn heater off (see To Turn Off Gas To Appliance on page 12 for non-thermostat model or page 11 for thermostat model)
•see Troubleshooting pages 14 through 16.
BURNER FLAME PATTERN
Figure 22 shows a correct burner flame pattern. Figure 23 shows an incorrect burner flame pattern. If pilot flame pattern is incorrect, as shown in Figure 23:
•turn heater off (see To Turn Off Gas To Appliance on page 12 for non-thermostat model and page 11 for thermostat model).
•see Troubleshooting on pages 14 through 16.
WARNING: If yellow tipping occurs, your heater could produce increased levels of carbon monoxide. If burner flame pattern shows yellow tipping, follow instruc- tions at bottom of this page.
Notice: Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater a n d b u r n c a u s i n g b r i e f patches of orange flame.
CLEANING ODS/PILOT AND BURNER
•Use a vacuum cleaner, pressurized air or a small, soft bristled brush to clean.
CLEANING BURNER PILOT AIR INLET HOLE
We recommend that you clean the unit every 2,500 hours of operation or every three months. W e also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend using compressed air no greater than 30 PSl. Your local computer store, hardware store. or home center may carry com- pressed 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 thepilot
Allow the unit to cool for at least thirty minutes.
2.Inspect burner and pilot for dust and dirt.
3.Blow air through the ports/slots
and holes in the burner.
Figure 20 - Correct Pilot Flame | Figure 22 - Correct Burner Flame | |
Pattern | ||
Pattern | ||
|
Figure 23 - Incorrect Burner
Flame Pattern
Also, clean the pilot assembly . A yellow tip on the pilot flame indi- cates 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 24). 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. |
|
Figure 21 - Incorrect Pilot Flame Pattern
CLEANING AND MAINTENANCE
WARNING: Turn off heater and let cool before servicing.
CAUTION: You must keep control areas, burner, and circulating air pas- sageways of 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 |
f r o m c a r p e t i n g , | b e d d i n g | |
material, | pet hair, etc. |
|
Figure 24 - Pilot Inlet Air Hole
CLEANING HEATER 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.
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