Burner Flame Appearance And Sooting - Superior SDV35-2 Care And Operation Instructions Manual

SUPERIOR
BURNER ADJUSTMENTS
(QUALIFIED TECHNICIANS ONLY)
Flame Appearance and Sooting
Proper flame appearance is a flame which is
blue at the base and becomes yellow-orange
in the body of the flame.
When the appliance is first lit, the entire
flame may be blue and will gradually turn
yellow-orange during the first 15 minutes
of operation. If the flame remains blue, or if
the flame is orange with evidence of sooting
(black tip), the air shutter opening may need
to be adjusted.
If the air shutter opening is closed too far,
sooting may develop. Sooting is indicated
by black puffs developing at the tips of very
long orange flames. Sooting results in black
deposits forming on the logs, appliance
inside surfaces and on exterior surfaces
adjacent to the vent termination.
Sooting is caused by incomplete combustion
in the flames and lack of combustion air
entering the air shutter opening. To achieve
a warm yellow-orange flame with an orange
f i r e - p a r t s . c o m
body that does not soot, the shutter opening
must be adjusted between these two
extremes.
Air Shutter Adjustment Guidelines
• If there is smoke or soot present, first
check the log set positioning to ensure
that the flames are not impinging on
any of the logs. If the log set is properly
positioned and a sooting condition still
exists, then the air shutter opening should
be increased.
• The more offsets in the vent system, the
larger the air shutter opening will need
to be.
• An appliance operated with the air shutter
opened too far, may have flames that
appear blue and transparent. These weak,
blue and transparent flames are termed
anemic.
• Propane models may exhibit flames
which candle or appear stringy. If this is
present and persists, adjust the air shutter
to a more closed position, then operate
the appliance for a few more minutes to
ensure that the flame normalizes and the
flames do not appear sooty.
The following chart is provided to aid you in
achieving the correct air shutter adjustment
for your installation.
• DIRECT VENT GAS FIREPLACES (SDV35-N-2) • CARE AND OPERATION INSTRUCTIONS
®
Figure 7: Flame Appearance
Air Shutter Adjustment Guidelines
Amount of
Primary Air
If air shutter is
closed too far
If air shutter is
open too far
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
:
Flame Air Shutter
Color Adjustment
Flame will Air shutter
be orange gap should be
increased
Flame will Air shutter
be blue gap should be
decreased
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