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Air Shutter Adjustment / Flame
Appearance
The GF 600 DV FIRELIGHT gas stove is shipped from
the factory equipped as a NATURAL GAS STOVE. If
the stove is converted for propane, it will be neces-
sary to adjust the air shutter on the burner tube to
achieve the proper gas to air mixture. The proper air
shutter settings are:
1/2” open for natural
7/8” open for propane
The air shutter can also help achieve the desired
flame appearance. Generally, flame appearance is a
matter of preference, however most people enjoy a
warm yellowish flame.
Air Shutter Too Open - the appliance will
generate a flame that is blue and transparent, or an
“anemic” flame.
Air Shutter Too Closed - 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, remove the burner
tube and using a phillips head screwdriver loosen
the screw at the air shutter and adjust accordingly.
Be sure to retighten the screw that holds the air
shutter setting. Reassemble the stove and close the
door. Allow stove to burn 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.
See Fig. 13.
WARNING:
AIR SHUTTER ADJUSTMENTS
SHOULD ONLY BE PERFORMED
ONLY BY A QUALIFIED PROFES-
SIONAL SERVICE TECHNICIAN.
Derating Procedure
To derate this unit, install the appropriate orifice per
the High Altitude chart.
1. Remove the two ¼” hex head screw that holds
the burner tube/log support to the bottom of the
stove.
2. Remove the burner tube/log support to expose
the main burner orifice.
3. Remove the orifice and replace with the appropri-
ate one from the high altitude kit.
4. Be sure to attach the high altitude conversion
sticker provided with the kit to the rating plate on
the appliance.
Figure 19. High Altitude Conversion Label. This sticker
is included in all high altitude kits and must be
applied to the stove when converted for high altitude.
THIS STOVE HAS BEEN CONVERTED FOR USE AT
AN ALTITUDE OF: ___________
Orifice Size: __________ Manifold Press. _____
Input Btu/Hr. _________ Fuel Type __________
Date of Conversion ___________
HIGH ALTITUDE ORIFICE CHART
Elevation
3.3 mm
3.2 mm
#48
#48
Gas Type
Natural Gas
Natural Gas
Propane
Propane
Orifice Size
0-2000 ft.
(0-610 m)
2001-4500 ft.
(611-1370 m)
0-2000 ft.
(0-610 m)
2001-4500 ft.
(611-1370 m)
Part Number
129666
Orifice only
154393 Kit
129407
No Derate