Superior DIRECT VENT SSDVT-3530CNM - Manual (Page 11)

11 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Figure 10 - Burner Flame Appearance Models SSDV-3530 & SSDV-4035 Series
BURNER ADJUSTMENTS
(QUALIFIED TECHNICIANS ONLY)
Flame Appearance and Sooting
Proper fl ame appearance is a fl ame which is
blue at the base and becomes yellowish-orange
in the body of the fl ame. When the appliance
is fi rst lit, the entire fl ame may be blue and
will gradually turn yellowish-orange during
the fi rst 15 minutes of operation. If after a
short period the fl ame stays lowered blue, or
if the fl ame is orange with evidence of sooting
(black tip), the air shutter opening may need
to be adjusted.
If the air shutter openings closed too far,
sooting may develop. Sooting is indicated
by black puffs developing at the tips of very
long orange fl ames. 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 fl ames and
lack of combustion air entering the air shutter
opening. To achieve a warm yellowish-orange
fl ame with an orange 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, fi rst check
the log set positioning to ensure that the
fl ames 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 fl ames that appear
blue and transparent. These weak, blue and
transparent fl ames are termed anemic.
• Propane models may exhibit fl ames 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
fl ame normalizes and the fl ames do not
appear sooty.
The following chart is provided to aid you in
achieving the correct air shutter adjustment
for your installation.
Air Shutter Adjustment Guidelines :
Amount of
Primary Air
Flame
Color
Air Shutter
Adjustment
If air shutter is
closed too far Flame will
be orange Air shutter
gap should be
increased
If air shutter is
open too far Flame will
be blue Air shutter
gap should be
decreased
WARNING
Air shutter adjustment should
only be performed by a qualifi ed
professional service technician.
WARNING
Ensure front glass panel is in place
and sealed during adjustment.
CAUTION
The air shutter door and nearby
appliance surfaces are hot. Exer-
cise caution to avoid injury while
adjusting fl ame appearance.
CAUTION
Carbon will be produced if the air
shutter is closed too much. Any
damage due to carboning result-
ing from improperly setting the
air shutter is not covered under
the warranty.
Burner Air Shutter Adjustment Procedure
1. Locate adjustment rod and adjust air shutter
to the standard setting as shown in Figure
11 (adjustment rod is located in the lower
control compartment). Note: Rotating the
adjustment rod counterclockwise increases
air and clockwise decreases air.
2. Light appliance (follow lighting procedure on
lighting label in control compartment or see
homeowners manual).
3. Allow the burner to operate for at least 15 min-
utes while observing the fl ame continuously
to ensure that the proper fl ame appearance
has been achieved (see Figure 10). If the
following conditions are present, adjust
accordingly.
• If flame appears weak or sooty, adjust
the air shutter, incrementally, to a more
open position until the proper fl ame
appearance is achieved.
• If fl ame stays lowered blue, adjust the
air shutter, incrementally, to a more
closed position until the proper fl ame
appearance is achieved.
4. Leave the control knob (off/pilot/on) in the
ON position and the burner OFF/ON switch
OFF (& remote switches, if applicable).
5. When satisfi ed that the burner fl ame ap-
pearance is normal, close the lower control
compartment door.