Appliance And Vent Clearances - Lennox Meris Series MLDVT-30NM Installation Instructions Manual

LENNOX HEARTH PRODUCTS • MERIT
MINIMUM CLEARANCES TO COMBUSTIBLES

Appliance And Vent Clearances

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 3).
MINIMUM CLEARANCES
Back
Sides
Top Spacers
Floor
From Bottom of Unit To Ceiling
Vent
SERVICE CLEARANCES
Front
Table 5
*Note: 3 in. (75 mm) above any horizontal/inclined vent component.
**Note: See Step 1 on Page 9 for clearance requirements to the nail-
ing flanges on each side of the unit and any adjacent screw heads.
Hearth Extension
- 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.
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
appliance and the area above it (see Figure 8). 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 8.
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 53 on Page 33).
Non-combustible materials, such as surrounds and other appliance trim,
may be installed on the appliance 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 9. 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 fireplace hood.
NOTE: Use high-temperature paint (rated 175° F or higher) on the underside of
the mantel.
8
SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS
®
*
Inches (millimeters)
0 (0) Spacers Or Dimples
0 (0) Spacers Or Dimples **
0 (0) Spacers Or Dimples
0 (0)
64 (1626)
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 - Inches (millimeters)
Model No.
Top Vent - with One 90 Degree Elbow
Secure Vent
MLDVT-30/35 *46-1/2 (1181)
MLDVT-40/45 *51-1/2 (1308)
Do not insulate the
space between the
appliance and the
area above it.
*Shelf Height
(
see table)
Figure 8 -
Shelf Height Minimum Clearances With Top Venting
Shelf Above Fireplace With Top Venting
Mantel Depth
18 (457)
16 (406)
14 (356)
12 (305)
10 (254)
8 (203)
12 10 8 6 4
(305) (254) (203) (152) (102)
Figure 9 -
Minimum Mantel Clearances
At 14" minimum
At 8-1/4" side
side wall clearance,
wall clearance, a
a combustible wall
combustible wall
can project to any
can project 12"
length.
o
45
Protected wall shown in white
14
8-1/4
(356) (209)
Figure 10 -
Minimum Distance to Unprotected Side Wall
Secure Flex (flex elbow)
*48-1/4 (1226)
*53-1/4 (1349)
* Includes 3" clearance to
combustibles (required above
vent components)
inches (millimeters)
Header
Top of
Appliance
Note - Hood shown
as positioned.
2
(51)
Top View of
Fireplace
Combustible Materials
Allowed In Shaded Area
"Safe Zone"
5 (127)
Combustible Walls
shown in dark gray
Combustible materials may
project beyond one side
12 (305)
of the fireplace opening
as long as they are kept
within the shaded areas
illustrated here.
Inches (millimeters)
19 (483)