Cold Climate Insulation - Lennox Hearth Products Direct Vent MPD-33 Series Installation Instructions Manual

Combustible
Finished Wall
Materials
Combustible
material
may touch the
appliance top.
Combustible
materials not
allowed below
this point on
the face of the
appliance.
Hood must be installed as shown.
Clean Face Models
Figure 55
Combustible
Finished Wall
Materials
Combustible
material
may touch the
appliance top.
Combustible
materials not
allowed below
this point on
the face of the
appliance.
Hood must be installed as shown.
Louver Face Models
Figure 56
Combustible materials may project beyond
the sides of the fireplace opening as long as
they are kept within the shaded areas illus-
trated in Figure 57 .
Combustible Materials
Allowed In Shaded
Area "Safe Zone"
12"
45
17"
Side
Wall
Side
Wall
14"
Figure 57
26

COLD CLIMATE INSULATION

This Area Must Remain
Clear of Combustible
For cold climate installations, seal all cracks around your appliance with noncombustible material
Materials
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
1" Min
(25 mm)
line holes and other openings should be caulked or stuffed with unfaced fiberglass insulation. In
cold climates, if the fireplace is being installed on a cement slab, a sheet of plywood or other raised
Spacer
platform can be placed underneath to prevent conducting cold up into the room. It also helps to
sheetrock inside surfaces and tape for maximum air tightness and caulk firestops.
Top of Appliance
Radiant panel
Top of Door Frame
This Area Must Remain
Clear of Combustible
Materials
1" Min
(25 mm)
Spacer
Top of Appliance Figure 58
Louvers
Top of Door Frame
A hearth extension is not required with this appliance. If a hearth extension is used, do not block
the lower control compartment door. Any hearth extension used is for appearance only and does
not have to conform to standard hearth extension installation requirements.
Note: Combustible wall finish materials and/or surround materials must not be allowed to
encroach the area defined by the appliance front face (black sheet metal). Never allow
combustible materials to be positioned in front of or overlapping the appliance front face.
See Figures 55 and 56.
Non-combustible materials, such as surrounds and other appliance trim, may be installed on the
appliance front face with these exceptions: they must not cover any portion of the glass or
louvers; they may cover any portion of the top radiant panel or the air gaps surrounding the top
radiant panel up to the installed hood.
Top View Of
Fireplace
Vertical installation clearances to combustible mantels vary according to the depth of the
mantel. See Figure 58 . Mantels constructed of non-combustible materials may be installed at
any height above the appliance opening; however, do not allow anything to hang below the hood.
5"
Min. Distance
8-1/4"
To Protected
Side Wall
Min. Distance To
Unprotected Side Wall
14
(356)
12
(305)
10
(254)
8
(203)
NOTE - Hood shown as positioned in louvered
front model. The hood position in the flush
faced front model is lower than shown.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
MANTEL CLEARANCES
Inches (mm)
12 (305) MANTEL
10 (254) MANTEL
8 (203) MANTEL
6 (152) MANTEL
4 (102) MANTEL
2 (51) MANTEL
6
(152) 4
(102)
TOP OF
APPLIANCE