Lennox Hearth Shoreline 33/40 DV INS - Manual (Page 20)

NOTE: DIAGRAMS AND ILLUSTRATIONS ARE NOT TO SCALE
Flame Appearance and Sooting
Your Shoreline™ fireplace insert is designed for maximum heating
efficiency. Therefore, upon lighting of the main burner the flames will be
semi-transparent or “bluish.” After 10-20 minutes of operation the logs
will heat up and the flames will become a yellow/orange color. If after
20 minutes the flame stays lowered blue, or if the flame is orange with
evidence of sooting (black tip), the air shutter may require adjustment.
Adjusting the insert to cause the flames to turn orange sooner may result
in poor combustion, sooting, and a hazardous situation. See Figures 33
and 34 showing proper flame appearance.
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 to orange flame that does not soot, the shutter opening
must be adjusted between these two extremes.
0
Figure 33 - Burner Flame Appearance
CAUTIONS
• Carbon will be produced if the air shutter is
closed too much. Any damage due to carboning
resulting from improperly setting the air shutter
is not covered under the warranty.
• The air shutter control arm and nearby appli-
ance surfaces are hot. Exercise caution to avoid
injury while adjusting flame appearance.
• The air shutter should never be set so as to make
the tips of the flames sooty or create sooting on
the viewing glass, logs, or heat exchanger. If
soot begins to form after burning, the air shutter
should be opened gradually until the sooting
condition stops. Gas quality and gas pressure
may vary, which can affect the burning charac-
teristics of the insert.
Figure 34 - Proper Burner Flame Appearance
No Blue Flame
Center
Soot at
Flame Tip
Dark Orange
Flame
IMPROPERLY
BURNING FLAME
Soot above
Flame Tip
No Soot at
Flame Tip
PROPERLY
BURNING FLAME
Semi-Transparent
Yellow Flame
Blue Flame
Center
Moving bracket to the right will open shut-
ter, to the left will close shutter.
Air Shutter Adjustment
The Shoreline has an air shutter control lever located below the front
door, left of the center point of the gas insert. The lever is linked to the
primary air shutter on the main burner. The air shutter regulates the
amount of primary air the burner receives and therefore how clean the
insert burns. The air shutter should only be adjusted by a qualified gas
technician. The insert should burn for about 15 minutes with the logs
installed before adjusting the air shutter. More air will result in shorter
flames and less color, less air will result in bigger flames and more color.
To adjust the air shutter, move the slide adjustment from side to side
(see Figure 35). Moving the air shutter lever to the right opens the air
shutter (more air). Moving the air shutter lever to the left closes the air
shutter (less primary air).
Figure 35 - Air Shutter Adjustment
Shutter Adjuster
See DETAIL A
Shutter Adjuster
DETAIL A
CLOSE OPEN
Ports on Pan
Burner Assembly