Burner Air Shutter Adjustments - Superior VRE4336ZEN Installation And Operation Instructions Manual

Burner Adjustments
The following paragraphs address burner
adjustment concerns and procedures.
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 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 excessive 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 sur-
faces adjacent to the face opening.
Sooting is caused by incomplete combustion 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.
These appliances should not smoke. Small
amounts of soot will accumulate over time
and should be expected. This soot adds to the
realism of the firebox interior. The logs can be
cleaned, when cool, with a soft brush and small
amounts of water.
If the logs are properly positioned and exces-
sive sooting conditions exist, the air shutter
opening on the main burner tube should be
adjusted. Keep in mind that this is an outdoor
appliance. Wind and air currents cannot be
strictly controlled.
If the flame acts too erratically, we recommend
that the screens be closed.
WARNING
AIR SHUTTER ADJUSTMENT SHOULD
ONLY BE PERFORMED BY A QUALIFIED
PROFESSIONAL SERVICE TECHNICIAN.
Burner Adjustment
CAUTION: THE SHUTTER AND NEARBY APPLI-
ANCE SURFACES ARE HOT. EXERCISE CAU-
TION TO AVOID INJURY WHILE ADJUSTING
FLAME APPEARANCE.
To adjust the flame, turn the shutter (located
in the left side of the burner pan) up or down
to increase or reduce the air shutter opening,
respectively. Position the air shutter to the
factory setting, as shown in Figure 18.
Allow the burner to operate for at least 15
minutes. Observe the flame continuously. If it
appears weak or sooty as previously described,
adjust the air shutter by rotating the shutter until
the flame appearance is as desired.
Shutter
Opening
1/16" For
Natural Gas
1/2" Open
For LP
Figure 18 - Burner Air Shutter Settings
Figure 19 - Proper Burner Flame Appearance
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
When satisfied that the appliance operates
properly, proceed to finish the installation. Leave
the control knob in "ON" position and turn the
remote switch "OFF." Reinstall the access and
refractory cover.
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