Lennox Hearth MPD-35 Series, MPD-45 Series Cold Climate Insulation, MANTEL CLEARANCES Inches mm

Combustible

Finished Wall

Materials

Combustible

material

may touch the appliance top.

Combustible materials not allowed below this point on

the face of the

appliance.

This Area Must Remain

Clear of Combustible

Materials

1" Min

(25 mm)

Spacer

Top of Appliance

Radiant panel Top of Door Frame

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.

MANTEL CLEARANCES

Inches (mm)

12 (305) MANTEL

10 (254) MANTEL

Hood must be installed as shown.

Clean Face Models

Figure 55

	8 (203) MANTEL
14	6 (152) MANTEL
(356)
	12

Combustible

Finished Wall

Materials

Combustible

material

may touch the appliance top.

Combustible materials not allowed below this point on the face of the

appliance.

This Area Must Remain

Clear of Combustible

Materials

1" Min

(25 mm)

Spacer

Top of Appliance

Louvers

Top of Door Frame

(305)	10			4 (102) MANTEL
	(254)	8		2 (51) MANTEL	TOP OF
			6
		(203)			APPLIANCE

(152)4

(102)

NOTE - Hood shown as positioned in louvered front model. The hood position in the flush faced front model is lower than shown.

Figure 58

26

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		Top View Of
Area “Safe Zone”
		Fireplace
12"
	45°	5"
17"
		Min. Distance
		8-1/4" To Protected
Side		Side Wall
Wall	Side
	Wall	Min. Distance To
14"
		Unprotected Side Wall

Figure 57

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.

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.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.