Hearth Extension - Heat & Glo ESC-42ST Owner's Manual

E. Hearth Extension
WARNING! Risk of Fire! Hearth extension required to
protect combustible fl oors 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 fi eld installed hearth exten-
sion (marble, tile, granite, etc) is required across full width
of fi replace.
If the appliance is to be placed directly on the fl oor, the
non-combustible hearth material will be limited to 3/4 in.
thick, including the fl oor adhesive. If the hearth mate-
rial will exceed 3/4 in. thick, the appliance will need to
be shimmed from the fl oor appropriately to maintain 1/4
in. minimum space between the fl oor hearth and hearth
refractory.
The base of the fi replace may sit on a combustible surface.
The area in front of the fi replace must be protected by a
noncombustible hearth extension, unless the fi replace is
raised a minimum of three inches above the combustible
fl oor 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
COMBUSTIBLE FLOOR
OR PLATFORM
Figure 5.7 Fireplace Positioned on Combustible Surface
MINIMUM
1/4 INCH SPACE
REQUIRED
3-3/4 IN.
WOOD OR OTHER
COMBUSTIBLE
FLOOR OR PLATFORM
Figure 5.8 Fireplace Raised A Minimum of 3 Inches Above
Combustible Surface
22
BOTTOM OF
HEARTH
FIREPLACE
REFRACTORY
3 IN.
BOTTOM OF FIREPLACE
MIN.
COMBUSTIBLE MATERIAL
1 IN. MAX THICKNESS
ALLOWED UNDER
FIREPLACE
Heat & Glo • ESC-42ST • 2146-900 Rev. Q • 4/13
23 IN.
3-1/2 IN.
NO COMBUSTIBLES
IN THIS AREA
39 IN.
4 IN.
Figure 5.9 Non-Combustible Zone
A
A B
in. 60-1/4 12
mm 1530 305
Figure 5.10 Non-Combustible Hearth Extension Minimum
Dimensions (Fireplace Positioned on Combustible
Surface)
1/2 IN. BUILDING MATERIAL
(MAY BE COMBUSTIBLE)
COMBUSTIBLE
FRAMING
FACTORY-
SUPPLIED 1/2 IN.
NON-
COMBUSTIBLE
BOARD
B