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LENNOX HEARTH PRODUCTS • MONTEBELLO
Step 10. INSTALLATION AND REMOVAL
OF GLASS DOOR
WARNING
• When reinstalling the glass
door, the door latch screws
must be securely tightened
to prevent the glass door
from falling out, which could
potentially cause damage
and possible injury.
• Do not attempt to substitute
the materials used on this
door, or replace cracked or
broken glass.
• Handle this glass with
extreme care! Glass is
susceptible to damage—Do
not scratch or handle roughly
while reinstalling the glass
door frame.
• 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.
• Do not attempt to touch
the front enclosure glass
with your hands while the
fireplace is in use.
WARNING
Do not operate appliance with
the glass front removed, cracked
or broken.
AVERTISSEMENT
Ne pas utiliser l'appareil si le
panneau frontal en verre n'est
pas en place, est craqué ou
brisé.
Only doors certified with the appliance
shall be used.
Seules des portes certifiées pour cet
appareil doivent être utilisées.
WARNING: DO NOT abuse glass door by
striking or slamming shut.
24
DLX POWER VENT DV GAS FIREPLACES (MDLX40/45IN-PV) • INSTALLATION INSTRUCTIONS
®
WARNING: Any safety screen or guard
removed for servicing the appliance
must be replaced prior to operating
the appliance.
AVERTISSEMENT : Tout écran ou
protecteur retiré pour permettre
l'entretien de l'appareil doit être remis
en place avant de mettre l'appareil
en marche.
Installing Glass Enclosure Panel
(see Figure 40)
To install the front glass door assembly,
proceed as follows:
1. Retrieve the glass door assembly. Visually
inspect the gasket on the backside of the
panel. The gasket surface must be clean, free
of irregularities and seated firmly.
2. Position the door frame in front of the
firebox opening and engage the bottom
flange over the rail at the bottom of the
firebox opening.
3. Swing the door up and back. Ensure the
gasket seats evenly as the door draws shut.
Engage the nut insert and fasten with two
screws to secure the door.
4. Install the door modesty shield on top
flange glass door as follows: grab the door
modesty shield with both hands, with the
open hem going down and engage it with the
upper lip of the glass door frame by pushing
it all the way down. Make sure the installed
shield is firmly in place.
5. With the firescreen hanging on the screen
rod, drop in the right side of the rod to the right
modesty panel. Then drop in the left side of the
rod through the slot of the left modesty panel.
Make sure that the rod is supported by the
bracket in the center of the fireplace.
WHEN INSTALLING THE GLASS DOOR,
SECURELY TIGHTEN THE LATCH SCREWS—
SEE THE FIRST WARNING ON THIS PAGE.
When installing the glass door, ensure the
spacing on both sides are equal.
Top Flange Glass door
Glass Door Latch (2)
assembly
Latch
Screws
Firebox Floor
Glass Door Assembly
Figure 40: Installing the Glass Door
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Step 11. BURNER ADJUSTMENTS
Flame Appearance and sooting
Proper flame appearance is a flame which is
blue at the base and becomes yellow-orange
in the body of the flame. When the appliance
is first lit, the entire flame may be blue and
will gradually turn yellow-orange during
the first 15 minutes of operation. After 15
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
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-orange flame with an
orange body that does not soot, the shutter
opening must be adjusted between these
two positions.
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 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 flames that appear
blue and transparent. These weak, blue and
transparent flames are termed anemic.
The following chart is provided to aid in
correctly adjusting the air shutter.
Amount of
Flame
Primary Air
Color
If air shutter is
Flame will
closed too far
be orange
If air shutter is
Flame will
open too far
be blue
Table 19: Air Shutter Adjustment
Air Shutter
Adjustment
Air shutter
gap should be
increased
Air shutter
gap should be
decreased
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