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INSPECTING BURNERS
Check pilot flame pattern and burner flame pat- terns often.
PILOT FLAME PATTERN
Figure 39 shows a correct pilot flame pattern. Figure 40 shows an incorrect pilot flame pattern. The incorrect pilot flame is not properly heating the thermocouple. When the thermocouple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 40
•turn heater off (see To Turn Off Gas to Appli- ance, page 21)
•see Troubleshooting, page 25
Note: The pilot flame on a natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.
Thermocouple | Pilot Burner |
Propane/LP Gas Pilot | |
Pilot Burner | Thermocouple |
|
Natural Gas Pilot
Figure 39 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
BURNER PRIMARY AIR HOLES | |
Air is drawn into the burner through the holes in | |
the fitting at the burner entrance. These holes may | |
become blocked with dust or lint. Periodically | |
inspect these holes for any blockage and clean if | |
needed. Blocked air holes will create soot. | |
MAIN BURNER | |
Periodically inspect all burner flame holes with the | |
fireplace running. All slotted burner flame holes | |
should be open with yellow flame present. All round | |
burner flame holes should be open with a small blue | |
flame present. Some burner flame holes may become | |
blocked by debris or rust, with no flame present. If | |
so, turn off fireplace and let cool. Remove blockage. | |
Blocked burner flame holes will create soot. | |
BURNER FLAME PATTERN | |
WARNING: If yellow tipping | |
occurs, | your fireplace could |
produce | increased levels of |
carbon monoxide. | |
NOTICE: Do not mistake orange | |
flames with yellow tipping. Dirt | |
or other fine particles enter the | |
fireplace and burn causing brief | |
patches of orange flame. | |
Figure 41 shows a correct burner flame pattern. Fig- | |
ure 42 shows an incorrect burner flame pattern. The | |
incorrect burner flame pattern shows the flame higher | |
consistently higher than 1 inch above the logs. | |
If burner flame pattern is incorrect, as shown in | |
Figure 42 |
|
•turn heater off (see To Turn Off Gas To Appli- ance, page 21)
•see Troubleshooting, page 25
Propane/LP Gas Pilot | |
Pilot Burner | Thermocouple |
Figure 41 - Correct Burner Flame Pattern
Yellow Tipping
Natural Gas Pilot
Figure 40 - Incorrect Pilot Flame Pattern
Figure 42 - Incorrect Burner Flame Pattern
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