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17
Derating Procedure:
1. To derate this unit, install the appropriate orifice per
the High Altitude chart.
2. Remove the log support/burner tube to expose the
main burner orifice.
3. Using a 1/2” open ended wrench or a deep-well
socket remove the burner orifice.
4. Replace with the appropriate orifice from the high
altitude kit.
5. Be sure to apply the high altitude conversion label
provided to the rating plate on the appliance.
THIS STOVE HAS BEEN CONVERTED FOR USE AT AN
ALTITUDE OF: ________________
Orifice Size: ____________ Manifold Press. _____
Input Btu/Hr. ___________ Fuel Type __________
Date of Conversion ___________
Figure 21. This label must be filled out and applied to the
appliance by the installer.
Flame Appearance / Air Shutter
Adjustment
The GF100 DV NORDIC QT gas stove is shipped from the
factory equipped to burn Natural gas. If the stove has
been converted for use with propane, will require adjust-
ment. THE AIR SHUTTER SHOULD BE SET:
1/4” open for natural gas
3/4” open for propane
The air shutter setting can also be adjusted to achieve
the desired flame appearance. Generally, flame appear-
ance is a matter of preference, however most people
enjoy a warm yellowish flame.
Too large an opening - the appliance will generate a
flame that is blue and transparent, or an “anemic” flame.
Too small a 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. Remove the Log Set.
2. Remove the burner tube by lifting it forward.
3. Use a phillips head screwdriver loosen to the screw at
the air shutter and adjust as necessary for the appro-
priate fuel and desired flame picture. Retighten the
screw after adjustment. See fig. 22.
4. Reassemble the stove. Allow it 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.
WARNING: AIR SHUTTER ADJUSTMENTS SHOULD ONLY
BE PERFORMED BY A QUALIFIED PROFESSIONAL SERVICE
TECHNICIAN.
Figure 22.
The Air Shutter should never be less than 1/8” open.
BURNER
TUBE
AIR SHUTTER
ORIFICE