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The air shutter on the burner tube controls the primary combustion air. It is set to the closed position at
the factory for natural gas fuel. If using liquid propane, see “Propane Conversion” on page 33. Some
adjustment may be necessary to obtain desired flame and to eliminate carbon deposits. Evaluate flame
appearance after the fireplace has reached operating temperature. See Figure 95 for proper flame pattern.
Open primary air if the door glass and firebox have carbon accumulation and/or the flames are long, dark and
stringy. The shutter may also be opened to lessen the flame height.
NOTE:
Proper air shutter setting is required.
The flame should be just orange and “lazy”. It should NEVER be set to create sooting on
internal parts and door glass.
Burner Flame Adjustment
Figure 95: Example of desirable flame pattern.
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