Lennox Hearth B-MNC0353VDE User Manual
Page 26
26
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
17"
14"
Min. Distance To
Unprotected Side Wall
8-1/4"
45
°
Combustible Materials
Allowed In Shaded
Area “Safe Zone”
12"
5"
Min. Distance
To Protected
Side Wall
Top View Of
Fireplace
Side
Wall
Side
Wall
Combustible materials may project beyond the
sides of the fireplace opening as long as they
are kept within the shaded areas illustrated in
Figure 54.
Figure 54
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12 (305) MANTEL
10 (254) MANTEL
8 (203) MANTEL
6 (152) MANTEL
4 (102) MANTEL
4
(102)
14
(356)
12
(305)
10
(254)
2 (51) MANTEL
TOP OF
APPLIANCE
6
(152)
NOTE - Hood shown as positioned in louvered
front model. The hood position in the flush
faced front model is lower than shown.
8
(203)
MANTEL CLEARANCES
Inches (mm)
Figure 53
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. In cold climates, if the fireplace is being installed on a cement
slab, a sheet of plywood or other raised 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.
INSTALLATION ACCESSORIES
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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 51 and
52 on page 25.
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.
Vertical installation clearances to combustible mantels vary according to the depth of the mantel. See
Figure 53. 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.