Heat & Glo LifeStyle ESC-42ST owner manual Hearth Extension, Combustible Material

E. Hearth Extension

WARNING! Risk of Fire! Hearth extension required to protect combustible floors in front of appliance.

WARNING! Risk of Fire! DO NOT block ventilation slots. A minimum 1/4 in. space between the bottom of hearth refractory and top of field installed hearth exten- sion (marble, tile, granite, etc) is required across full width of fireplace.

If the appliance is to be placed directly on the floor, the non-combustible hearth material will be limited to 3/4 in. thick, including the floor adhesive. If the hearth mate- rial will exceed 3/4 in. thick, the appliance will need to be shimmed from the floor appropriately to maintain 1/4 in. minimum space between the floor hearth and hearth refractory.

The base of the fireplace may sit on a combustible surface. The area in front of the fireplace must be protected by a noncombustible hearth extension, unless the fireplace is raised a minimum of three inches above the combustible floor or hearth. See Figures 5.7, 5.8 and 5.10.

NON-COMBUSTIBLE
MATERIAL ON SIDES
(PROFILE VIEW)
MINIMUM
1/4 INCH SPACE
REQUIRED
MARBLE, GRANITE, TILE OR
OTHER NON-COMBUSTIBLE
HEARTH EXTENSION
3/4 IN. MAX
12 IN.
WOOD OR OTHER	HEARTH	BOTTOM OF
COMBUSTIBLE FLOOR	REFRACTORY	FIREPLACE
OR PLATFORM

Figure 5.7 Fireplace Positioned on Combustible Surface

MINIMUM
1/4 INCH SPACE
REQUIRED
3-3/4 IN.	BOTTOM OF FIREPLACE	3 IN.
		MIN.
	COMBUSTIBLE MATERIAL
WOOD OR OTHER	1 IN. MAX THICKNESS
	ALLOWED UNDER
COMBUSTIBLE
	FIREPLACE
FLOOR OR PLATFORM

Figure 5.8 Fireplace Raised A Minimum of 3 Inches Above Combustible Surface

23 IN.
3-1/2 IN.
NO COMBUSTIBLES	1/2 IN. BUILDING MATERIAL
IN THIS AREA
	(MAY BE COMBUSTIBLE)
39 IN.	COMBUSTIBLE
	FRAMING
4 IN.
	FACTORY-
	SUPPLIED 1/2 IN.
	NON-
	COMBUSTIBLE
	BOARD

Figure 5.9 Non-Combustible Zone

		A
	A	B
		B
in. 60-1/4 12
mm	1530	305

Figure 5.10 Non-Combustible Hearth Extension Minimum

Dimensions (Fireplace Positioned on Combustible

Surface)

22 Heat & Glo • ESC-42ST • 2146-900 Rev. o • 5/12