Adjusting The Air Shutter - Lennox ELITE LDV42N Installation Instructions Manual

LENNOX HEARTH PRODUCTS • ELITE LINEAR VIEW DIRECT-VENT GAS FIREPLACE (MODELS LDV42, LDV54) • INSTALLATION INSTRUCTIONS
VERIfyINg APPLIANCE OPERATION
(CONTINUED)

ADjUSTINg ThE AIR ShUTTER

Note: Before adjusting the air
shutter, the glass door assembly
must be in place and secured.
flame Appearance and Sooting
Proper flame appearance is a flame that is blue
at the base and becomes yellowish-orange in
the body of the flame. When the appliance is
first lit, the entire flame may be blue and will
gradually turn yellowish-orange during the first
30 minutes of operation. After 30 minutes of
operation, if the flame is 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 depos-
its forming on the 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 enter-
ing the air shutter opening. To achieve a warm
yellowish-orange flame 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, first ensure
that the flames are not impinging on any of
the panels. If the panels are properly posi-
tioned and a sooting condition still exists,
increase the air shutter opening.
• 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.
• Propane models may exhibit flames that
candle or appear stringy. If this is present
and persists, adjust the air shutter to a more
OPEN position, then operate the appliance for
a few more minutes to ensure that the flame
normalizes and the flames do not appear
sooty.
WARNINg
• Air shutter adjustment should
only be performed by a qualified
professional service technician.
• Ensure front glass panel is in
place and sealed during adjust-
ment.
32
Figure 32-1: Proper Flame Appearance
If installed, the optional Surround can be
removed to provide easier access to the Air
Shutter Adjustment Lever.
Figure 32-2
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
If air shutter is flame will
closed too far be orange
If air shutter is flame will
open too far be blue
CAUTION
• Soot will be produced if the air
shutter is closed too much. Any
damage due to sooting resulting
from improperly setting the air
shutter is not covered under the
warranty.
• The air shutter door and nearby
appliance surfaces are hot. Exer-
cise caution to avoid injury while
adjusting flame appearance.
NOTE: DIAGRAMS AND ILLUSTRATIONS ARE REPRESENTATIVE AND ARE NOT DRAWN TO SCALE.
Air Shutter Adjustment Procedure
To adjust the air shutter for proper flame
appearance (as illustrated in Figure 32-1):
1. Before adjusting the air shutter, allow the
flame Air Shutter
Color Adjustment
2. Adjust the air shutter using the lever on the
Air shutter
gap should be
increased
Air shutter
gap should be
decreased
• If the flame appears sooty, adjust the air shut-
• If the flame stays blue, gradually adjust the
Air Shutter Adjustment Lever
(Below door assembly)
[DETAIL]
burner to operate for at least 30 minutes
while observing the flame.
lower right side of the firebox (Figure 32-2).
• for more CLOSED air shutter, PULL
lever OUT (toward front of fireplace).
• for more OPEN air shutter, PUSh
lever IN (toward back of fireplace).
ter until proper flame appearance is achieved.
air shutter to a more CLOSED position until
proper flame appearance is achieved.