Appliance And Vent Clearances - Lennox MPB35ST-NM-B Installation Instructions Manual

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MINIMUM CLEARANCES TO COMBUSTIBLES

Appliance And Vent Clearances

Maintain clearances from appliance to combustible materials as detailed in
Table 6 with the following exception: When the unit is installed with one
side flush with a wall, the wall on the other side of the unit must not
extend beyond the front edge of the unit. In addition, when the unit is
installed in the middle of a room, the side walls surrounding the unit must
not extend beyond the front or rear edge of the unit. See Figure 3.
MINIMUM CLEARANCES
Inches (millimeters)
Sides
Top Spacers
Floor
Bottom of Appliance
To Ceiling
Vent
SERVICE CLEARANCES
Front and Back Faces
Table 6
*NOTE: 3" (75 mm) above any inclined vent component.
**NOTE: See Page 8, Step 1 and Figure 8 for clearance requirements
to the nailing flange located at each side of the unit and any screw
heads adjacent to it.
Hearth Extension - A hearth extension is not required with this appliance.
If a hearth extension is used, do not block the control compartment access
panel. Any hearth extension used is for appearance only and does not
have to conform to standard hearth extension installation requirements.
Wall Finishes / Surrounds / Mantels
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 Figure 37.
Non-combustible materials, such as surrounds and other appliance trim,
may be installed on the appliance front and back faces with the following
exception: The material must NOT cover any portion of the glass, louvers
or top radiant panel (optional kit).
Vertical installation clearances to combustible mantels vary according
to the depth of the mantel. (See Figure 5). 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.
These instructions should be used as a guideline and do not supersede
local codes in any way.
Minimum clearance requirements include any projections such as shelves,
window sills, mantels, etc. above the appliance.
Note: We recommend the use of high temperature paint (rated 175° F
or higher) on the underside of the mantel.
1/2 (13)
0 (0)
0 (0)
72 (1829)
1 (25.4)
Feet (meters)
3 ft. (0.9 m)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Mantel Depth
13 (330)
11 (279)
9 (289)
7 (178)
5 (127)
3 (76)
12
8
6
4
2
10
(305)
(254)
(203)
(152)
(102)
(51)
Figure 5 - Minimum Mantel Clearances
Combustible materials may project
beyond one side of the fireplace open-
ing as long as they are kept within the
shaded areas illustrated here.
At 5" minimum side wall clearance,
the wall (shown in dark gray) can be
any length.
o
45
5
4
3
2
1
(127)
(102)
(76)
(51)
(25)
Figure 6 - Minimum Distance to Unprotected Side Wall
NOTE: The side walls of mantels
may protrude beyond the front face
of the fireplace a maximum of 5" (127
mm) at 0" clearance to the sides of
the fireplace.
inches (millimeters)
Top Of Appliance
Top View of
Fireplace
1
(25)
2
(51)
3
(76)
4
(102)
Inches (millimeters)
5
(127)
6
(152)
7
(178)
8
(203)
9
(229)
10
(250)
7

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