CGN10RLA
NATURAL GAS HEATER
INSPECTING
BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 18 shows a correct pilot flame pattern. Figure 19 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touch- ing the thermocouple. This will cause the thermocouple to cool. When the thermo- couple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 19
•turn heater off (see To Turn Off Gas to Appliance, page 11)
•seeTroubleshooting, pages 13 through 15
Pilot Burner
Thermocouple
Figure 18 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
Figure 19 - Incorrect Pilot Flame Pattern
BURNER FLAME PATTERN
Figure 20 shows a correct burner flame pattern. Figure 21 shows an incorrect burner flame pattern.
If burner flame pattern is incorrect, as shown in Figure 21
Figure 20 - Correct Burner Flame Pattern
Figure 21 - Incorrect Burner Flame Pattern
CLEANING AND MAINTENANCE
WARNING: Turn off heater and let cool before cleaning.
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.
ODS/PILOT AND BURNER ORIFICE
•Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean.
We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recom- mend using compressed air no greater than 30 PSI. Your local computer store, hard- ware store, or home center may carry com- pressed air in a can. You can use a vacuum cleaner in the blow position. If using com- pressed air in a can, please follow the direc- tions on the can. If you don't follow direc- tions 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 22). 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 Air Inlet
Hole
Pilot Assembly
Figure 22 - Pilot Inlet Air Hole
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 cabi- net to remove dust.
•turn heater off (see To Turn Off Gas to Appliance, page 11)
•seeTroubleshooting, pages 13 through 15
CLEANING BURNER PILOT AIR INLET HOLE
We recommend that you clean the unit ev- ery 2,500 hours of operation or every three months.
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