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TC42_NG06D_050919-16
The air shutter on the burner tube controls the primary combustion air to the gas burner and is preset 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.
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. See Figure 25 for an example of a proper looking flame. The flame should be just orange and “lazy”. It
should NEVER be set to create sooting on internal parts and glass.
Caution: Burner area may be hot! Turn off the fireplace and allow the unit to cool before proceeding.
Burner Flame Adjustment
To Adjust:
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 log set and set aside.
3. Locate and loosen the air shutter adjustment screw (Figure 28).
4. Rotate the shutter to increase or decrease the air intake depending on type of gas being used.
5. Tighten adjustment screw and reassemble in log set.
Figure 25: Desirable flame appearance.
Figure 26: Air shutter location.
1/8” gap
Figure 27: Air shutter in natural gas position.
Air shutter
adjustment
screw
Air shutter
opening
Figure 28: Shutter set for propane.
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