Minimum Clearances To Combustibles - Lennox Montebello MDLX40IN Installation Instructions Manual

LENNOX HEARTH PRODUCTS • MONTEBELLO

MINIMUM CLEARANCES TO COMBUSTIBLES

The appliance is approved with zero clearance to combustible materials
on all sides (as detailed in Table 5), 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 recessed, the side walls surrounding
the unit must not extend beyond the front edge of the unit (see Figure 2).
APPLIANCE MINIMUM CLEARANCES*
Sides
Top Spacers
Floor
Back
Bottom of Appliance To Ceiling
Vent
SERVICE CLEARANCES
Front
Table 5
*NOTE: 3" (75 mm) above any horizontal/inclined vent component.
**NOTE: See Page 9, Step 1 for clearance requirements to the nailing
flange located at each side of the unit and any screw heads adjacent
to it. See Page 28 for hearth extension requirements.
Shelf Height
To provide for the lowest possible shelf surface, the venting attached to
the top vent should be routed in a way to minimize obstructions to the
space above the appliance. Do not insulate the space between the ap-
pliance and the area above it (see Figure 7). The minimum height from
the base of the appliance to the underside of combustible materials used
to construct a utility shelf in this fashion is shown in Figure 7.
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 face. See Figure 9 and Figure
51 on Page 28.
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 removable glass panel.
Vertical installation clearances to combustible mantels vary according
to the depth of the mantel. See Figure 8. Mantels constructed of non-
combustible materials may be installed at any height above the appliance
opening. 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.
8
DLX DIRECT VENT GAS FIREPLACES (MDLX40/45) • INSTALLATION INSTRUCTIONS
®
Inches (millimeters)
1/2 (13), 0 (0) Spacers **
0 (0)
0 (0)
1/2 (13), 0 (0) Spacers
69 (1743)
3 (76)
* / 1 (25.4)
Top Sides & Bottom
Feet (meters)
3 feet (0.9 meters)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Combustible Shelf Height -
Top Vent - with 2 Feet Vertical Vent and One 90 Degree Elbow
Model
MDLX40
MDLX45
* Includes 3" clearance to combustibles (required above vent components)
Do not insulate the
space between the
appliance and the
area above it.
Shelf Height
(see table)
Figure 7
Shelf Above Fireplace With Top Venting
12 (305)
17
(432)
15
(381)
13
(330)
11
(279)
9
(229) 7
(178)
Figure 8
Combustible Materials
Allowed In Shaded Area
"Safe Zone"
12"
305 mm
45°
17"
432 mm
Side
Wall
Side
Wall
14"
356 mm
Figure 9
Inches (millimeters)
Secure Vent
®
*84-1/16 (2135)
*89-1/16 (2252)
2-1/2 ft
(to centerline)
Vertical
Vent (minimum)
MANTEL
MANTEL
CLEARANCES
MANTEL
10 (254)
Inches (mm)
MANTEL
8 (203)
MANTEL
6 (152)
MANTEL
4 (102)
MANTEL
2 (51)
Fireplace
(side view)
Top of Appliance
Top View of
Fireplace
5"
127 mm
8-1/4"
210 mm
Minimum Distance to
Protected Side Wall
Minimum Distance to
Unprotected Side Wall