010410-16 TC54.NG02.C
An air shutter on each of the burner tubes controls the primary combustion air to the gas burner
and is preset closed at the factory for natural gas fuel. 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 Fig. #36 for proper flame pattern.
Open primary air shutter if the logs, glass, and firebox have carbon accumulation and / or
the flames are long, dark and stringy. The shutter may also be opened to enhance the Ember
Material glow and lessen the flame height.
Caution: Burner area may be hot!
Turn off the fireplace and allow the unit to cool before proceeding.
To Adjust: (See Fig. # 37)
1. Open and remove window frame and set aside. See "Window
Frame Removal" section found in the Installation and Operating
Instructions manual.
2. Remove the logs and set aside.
3. Loosen the screw in the Primary Air Shutter.
4. Rotate the shutter to increase or decrease the amount of primary
air.
PRIMARY AIR SHUTTERS
The flame should be just orange and “lazy”. It should NEVER be set to create soot on internal
parts and glass.
Fig. #37
Fig. #36
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Burner Flame Adjustment
