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. For LP see Pg.44. Some adjustment may be nec-
essary to obtain desired fl ame and to eliminate carbon deposits. Evaluate fl ame appearance
after the fi replace has reached operating temperature. See Fig. #101 for proper fl ame pattern.
Open primary air if the window glass and fi rebox have carbon accumulation and/or the
fl ames are long, dark and stringy. The shutter may also be opened to lessen the fl ame
height.
NOTE:
Proper air shutter setting is required.
The fl ame should be just orange and “lazy”. It should NEVER be set to create sooting
on internal parts and window glass.
Fig #101
Burner Flame Adjustment
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TCWS.54CSTE 110712-72
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