Inspecting Burners, Pilot Flame Pattern

INSPECTING BURNERS

Pilot Flame Pattern

Burner Primary Air Holes

Main Burner

Burner Flame Pattern

INSPECTING BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure38 showsacorrectpilotflamepattern.Figure39 showsanincorrect 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 39

•turn heater off (see To Turn Off Gas to Appliance, page 18)

•see Troubleshooting, pages 22 through 24

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		Thermocouple
	Pilot Burner		Thermocouple
	Pilot Burner
Propane/LP Gas Pilot		Natural Gas Pilot
Figure 38 - Correct Pilot Flame Pattern
Pilot Burner	Pilot Burner		Thermocouple
Thermocouple

Propane/LP Gas Pilot

Natural Gas Pilot

Figure 39 - Incorrect Pilot Flame Pattern

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 run- ning. 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.