23
139587_05 GF 200 DV IPI October 2015
Flame Appearance / Air Shutter
Adjustment
The Air Shutter may be adjusted to provide the best flame
picture for your specific installation. The factory setting for
Natural gas is 1/16” (1.5mm) open. For Propane, the initial
recommended setting is 1/8” (3mm) open.
Too large an air opening
- the appliance will generate a
flame that is blue and transparent, or an “anemic” flame.
Too small an air setting
- the appliance will generate
very long yellow flames resulting in soot. Sooting
produces black deposits on the logs, on the inside walls of
the appliance, and potentially on the exterior termination
cap. Sooting is caused by incomplete combustion in the
flames and lack of combustion air entering the air shutter
opening.
To adjust the air shutter:
1. Reach under the stove and loosen the wingnut. See
fig. 45. Slide the wing nut stud forward to open the air
shutter and back to provide less air. Make adjustments
in 1/16” (1.5mm) increments.
2. Allow the stove to burn for 30 minutes on the HIGH
setting, observing the flame continuously. If the
flame appears weak, slow, or sooty, repeat the process
described above until the flame is as desired.
3. Tighten the wingnut to secure the shutter at the
desired setting.
WARNING: AIR SHUTTER ADJUSTMENTS SHOULD ONLY
BE PERFORMED BY A QUALIFIED PROFESSIONAL SERVICE
TECHNICIAN
.
Figure 45.
Loosen the wing nut to adjust the air shutter.
Min. Opening NG: 1/16” (1.5 mm) Factory Setting
Min. Opening LP: 1/8” (3 mm)
Figure 46. Normal flame picture.