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10
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
When satisfied that the appliance operates prop-
erly, proceed to finish the installation. Leave the
control knob/lever in “ON” position and turn the
remote switch “OFF.” Replace the refractory
access panel.
Figure 24
Adjustment
To adjust the flame, position the air shutter to
the nominal setting
(Figure 24 )
. Allow the
burner to operate for at least 30 minutes.
Observe the flame continuously. If it appears
weak or sooty as previously described, adjust
the air shutter open or closed until desired
effect is achieved.
No smoke or soot should be present. If sooting
conditions exist, the air shutter opening on the
main burner can be adjusted. Normally, the
more offsets in the vent system, the greater the
need for the air shutter to be opened further.
WARNING: AIR SHUTTER ADJUST-
MENT SHOULD ONLY BE PERFORMED
BY A QUALIFIED PROFESSIONAL SER-
VICE TECHNICIAN.
Nominal Air Shutter Settings
Natural Gas - ¹⁄₁₆" (1.59 mm) Open
Propane Gas - ¹⁄₄" (6.35 mm) Open
Orifice
Air Shutter
Burner Tube
Adjusting
Set Screw
Figure 23
Replace the front log if removed for pilot
inspection.
To light the burner; turn “ON” the remote wall
switch and rotate the gas valve control knob
counterclockwise to the “ON” position (“ON”
will be to the left hand side of the valve).
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To light the burner, turn ‘ON’ the optional
remote wall switch and turn the gas control
switch to the “ON” position. Ensure the ignitor
lights the pilot. The pilot flame should engulf
the flame rod as shown in
Figure 23.
Step 10. Adjustments – The following para-
graphs address adjustment concerns and pro-
cedures.
Flame Appearance and Sooting
Proper flame appearance is a matter of taste.
Generally most people prefer the warm glow of
a yellow to orange flame. Appliances operated
with air shutter openings that are too large, or
with long vertical vent runs, will exhibit flames
that are blue and transparent. These weak, blue
and transparent flames are termed anemic.
If the air shutter opening is too small sooting
may develop. Sooting is indicated by black
puffs developing at the tips of very long orange
flames. Sooting results in black deposits form-
ing on the logs, appliance inside surfaces and
on exterior surfaces adjacent to the vent termi-
nation. Sooting is caused by incomplete com-
bustion in the flames and a lack of combustion
air entering the air shutter opening.
To achieve a warm yellow to orange flame with
an orange body that does not soot, the shutter
opening must be adjusted between these two
extremes.
Proper Flame
Adjustment
Hot Surface
Igniter
Flame Rod
Ground
Electrode
3/8 To 1/2 Inch
(9 mm to 13 mm)
Figure 22
³⁄₈" Min
(9 mm)
Hood
Pilot
Nozzels
Ignitor Rod
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The pilot flame should be steady, not lifting or
floating. Flame should be blue in color with
traces of orange at the outer edge.
The top ³⁄₈" (9 mm) at the pilot generator
(thermopile) should be engulfed in the pilot
flame. The flame should project 1" (25 mm)
beyond the hood at all three ports
(Figure 22 )
.