OPERATING HEATER
Continued
nTHERMOSTATn
CONTROL OPERATION
The thermostatic control used on these Models differs from standard thermostats.Standard thermostats sim- ply turn on and off the burner. The thermostat used on this heater senses the room temperature. At times the room may exceed the set temperature.If so, the burner will shut off.The burner will cycle back on when room temperature drops below the set temperature. The temperature setting knob can be set to any comfort level between HI and LO.
Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not al- ways agree with room temperature (depending on housing construction, installation location, room size, open air temperatures, etc.)Frequent use of your heater will let you determine your own comfort levels.
nMANUAL LIGHTINGn
PROCEDURE
1.Remove lower front panel (see Figure 7 page 7).
2.Follow steps 1 through 5 under Lighting Instructions on page 12.
3.With control knob pressed in, strike match. Hold match to pilot until pilot lights.
4.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Follow step 8 under Lighting Instructions on page 12.
5.Replace lower front panel.
Figure 23 - Correct Pilot Flame Pattern
Figure 24 - Incorrect Pilot Flame Pattern
BURNER FLAME PATTERN Figure 25 shows a correct burner flame pattern. Figure 26 shows an incorrect burner flame pattern. If burner flame pattem is incorrect, as shown in Figure 26.
•turn heater off (see To Turn Off Gas to Appliance. page 11 for
•see Troubleshooting. pages 14 through 16.
Figure 25 - Correct Burner Flame Pattern
CLEANING ODS/PILOT AND BURNER
•Use a vacuum cleaner, pressurized air. or 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. 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 com- pressed 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 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 27). With the unit off, lightly blow air through the air inlet hole. You may blow through a drinking straw if
nINSPECTING BURNERn
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 23 shows a correct pilot flame pattern. Figure 24 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 healer will shut down. If pilot flame pattern is incorrect, as shown in Figure 24.
•turn heater off (see To Turn Off Gas to Appliance. page 11 for
•see Troubleshooting, pages 14 through 16.
Figure 26 - Incorrect Burner Flame Pattern
n CLEANING AND n
MAIN TENANCE
WARNING: Turn off heater and let cool before servicing.
CAUTION: You must keep con- trol areas, burner, and circulating air passageways of heater clean. Inspect these areas of heater be- fore each use. Have heater In- spected yearly by a qualified ser- vice person. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding material, pet hair, etc.
compressed air is not available.
Figure 27 - 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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