®
INSPECTING
BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 20 shows a correct pilot flame pat- tern. Figure 21 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the 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, page 13)
•seeTroubleshooting, pages 15 through 17
Pilot Burner
Thermocouple
Figure 20 - Correct Pilot Flame Pattern
Figure 22 - Correct Burner Flame Pattern
Bad Burner
Figure 23 - Incorrect Burner Flame Pattern
CLEANING AND MAINTENANCE
CLEANING BURNER PILOT AIR INLET HOLE
We recommend that you clean the unit every 2,500hoursofoperationoreverythreemonths.
We 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 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 24). With the unit off, lightly
Thermocouple
Pilot Burner
WARNING: Turn off heater and let cool before cleaning.
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
BURNER FLAME PATTERN
Figure 22 shows a correct burner flame pattern. Figure 23 shows an incorrect burner flame pattern.
CAUTION: You must keep control areas, burner, and circu- lating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a quali- fied service person. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding material, pet hair, etc.
Pilot Air Inlet
Hole
Pilot Assembly
Figure 24 - Pilot Inlet Air Hole
If burner flame pattern is incorrect, as shown in Figure 23
•turn heater off (see To Turn Off Gas to Appliance, page 13)
•seeTroubleshooting, pages 15 through 17
ODS/PILOT AND BURNER | CABINET | |
• Use a vacuum cleaner, pressurized air, | ||
Air Passageways | ||
or small, soft bristled brush to clean. | ||
| • Use a vacuum cleaner or pressurized air | |
| to clean. |
Exterior
•Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabi- net to remove dust.
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