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OPERATION
TO TURN OFF GAS TO APPLIANCE
1. Open the lower access panel located under the heater screen.
2. Turn control knob clockwise
3. Close lower access panel.
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns 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 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, above).
• see Troubleshooting, page 23-25.
Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have
no yellow or orange color.
Fig. 20 - Correct Pilot Flame Pattern
NG PILOT
WARNING: If yellow tipping occurs, your heater could produce increased levels of carbon
monoxide. If burner flame pattern shows yellow tipping, follow instructions at bottom of this
page.
WARNING: Do not allow fans to blow directly into the heater. Avoid any drafts that alter burner
flame patterns.
WARNING: Do not use a blower insert, heat exchanger insert or other accessory not approved for
use with this heater.
Notice: Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater
and burn causing brief patches of orange flame.
to the "OFF" position.
A
LP PILOT
20
A
Fig. 21 - Incorrect Pilot Flame Pattern
NG PILOT
A
LP PILOT
A
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