5
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • MERIT
®
SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • INSTALLATION INSTRUCTIONS
COLd CLIMATE INSULATION
For cold climate installations, seal all cracks
around your appliance with noncombustible
material and wherever cold air could enter
the room. It is especially important to insulate
outside chase cavity between studs and under
floor on which appliance rests, if floor is above
ground level. Gas line holes and other openings
should be caulked or stuffed with unfaced
fiberglass insulation. Check local codes for
additional requirements.
If the fireplace is being installed on a cement
slab in cold climates, a sheet of plywood or
other raised, insulated platform can be placed
underneath to prevent cold transfer to the
fireplace and into the room. It also may help
to sheetrock the inside surfaces and/or tape
for maximum air tightness.
LOCATION
In selecting the location, the aesthetic and
functional use of the appliance are primary
concerns. However, vent system routing to
the exterior and access to the fuel supply are
also important.
Due to high temperatures, the appliance
should be located out of traffic and away from
furniture and draperies (Figure 3).
En raison des températures élevées,
l’appareil devrait être installé dans un
endroit où il y a peu de circulation et loin
du mobilier et des tentures (Figure 3).
The location should also be free of electrical,
plumbing or other heating/air conditioning
ducting.
These appliances are equipped with an inte-
gral combustion air door and actuator arm.
Combustion air kits are optional and must be
installed before removing the securing screw
allowing the movement of the combustion air
actuator arm
(see Step 5 on Page 14)
.
Be aware that this is a heat-producing ap-
pliance. Objects placed above the unit are
exposed to elevated temperatures.
The appliance should be mounted on a fully
supported base extending the full width and
depth of the unit. The appliance may be located
on or near conventional construction materials.
However, if installed on combustible materials,
such as carpeting, vinyl tile, etc., a metal or
wood barrier covering the entire bottom surface
must be used.
These appliances may be used for bedroom
installations in the United States and are listed
accordingly. These units may not be installed
in bedrooms in Canada.
Figure 3: Typical Locations
Note: When the unit is installed with one side
flush with a wall, see Figure 5 on Page 7.
Typical Locations
