Step 9. Installing Glass Door; Step 10. Burner Adjustments - Lennox MLDVT-30NM Installation Instructions Manual

Step 9. INSTALLING THE GLASS DOOR
WARNING: Do not operate appli-
ance with the glass front removed,
cracked or broken. Replacement
of the glass should be done by
a licensed or qualified service
technician.
AVERTISSEMENT: Ne pas utiliser
l'appareil si le panneau frontal en
verre n'est pas en place, est craqué
ou brisé. Confiez le remplace-
ment du panneau à un technicien
agréé.
WARNING: Do not attempt to
substitute the materials used on
this door, or replace cracked or
broken glass with any materials
other than those provided by the
appliance manufacturer.
WARNING: Handle this glass
with extreme care! Tempered
glass is susceptible to damage
– do not scratch or handle roughly
while reinstalling the glass door
frame.
WARNING: The glass door of this
appliance must only be replaced as
a complete unit as provided by the
manufacturer. Do not attempt to
replace broken, cracked or chipped
glass separately.
WARNING: Do not attempt to
touch the front enclosure glass
with your hands while the fireplace
is in use.
Removing Glass Enclosure Panels
(see Figure 46 )
. To access the glass door securing latches,
first open the lower control compartment door
(Figure 46 ) by lifting and pulling the bottom
panel forward.
30
2. Pull the latches forward and down to release
them from the door channel.
3. Pull the bottom of the door out a few inches
and grasp it on the right and left. Gently lift to
release the door from its channel above the
door. Pull the door forward.
4. Retrieve the glass door. Visually inspect the
gasket on the backside of the frame. Gasket
surface must be clean, free of irregularities
and seated firmly.
5. Position the door in front of the firebox
opening with the bottom of the door held away
from the fireplace (Figure 46 ). Hook the top
flange of the door frame over the top of the
firebox frame.
6. Let the bottom of the door frame swing
gently in towards the fireplace ensuring that the
gasket seats evenly as the door frame draws
shut. Fasten the two latches located underneath
the firebox floor to the door's vee-flange. Close
both the latches securely.
7. Install the hood. Note the location of the
three clips inside the top air channel above
the door. The clips are equally spaced on the
top surface of the air channel opening. Use a
screwdriver to open the clips slightly if needed.
Engage the back edge of the eyebrow into the
clips to secure.
Glass
Door
Glass Door
Spring Latch
Control
Compartment
Panel
Figure 46 -
INSTALLING THE GLASS DOOR
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Step 0. BURNER ADJUSTMENTS
Flame Appearance and sooting
Proper flame appearance is a flame which 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 15 minutes of operation.
If after a short period the flame stays lowered
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 openings 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 yel-
lowish-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 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
Header
sooting condition still exists, then the air
Spacing
Top
shutter opening should be increased.
Standoffs
• The more offsets in the vent system, the larger
the air shutter opening will need to be.
• An appliance operated with the air shutter
5/8"
opened too far, may have flames that appear
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blue and transparent. These weak, blue and
Flange
transparent flames are termed anemic.
/2"
• Propane models may exhibit flames which
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candle or appear stringy. If this is present
Flange
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
Flush
for your installation.
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Flange
Air Shutter Adjustment Guidelines
Amount of
Primary Air
Hood
If air shutter is
closed too far
If air shutter is
open too far
:
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