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Heat & Glo • Cerona-36, Cerona-42 • 2106-900 Rev. F • 04/0810
Fire Risk.
Hearth extension required to protect
combustible fl oors in front of appliance.
• An 8 inch minimum hearth extension must be constructed
of non-combustible material.
E. Hearth Extension
WARNING
Figure 3.6 Hearth Extension Dimensions
AB
Cerona-36
in. 41-1/8 8
mm 1045 203
Cerona-42
in. 48-1/8 8
mm 1222 203
A
B
NAILING TABS
(BOTH SIDES)
NON-COMBUSTIBLE
HEARTH EXTENSION
1 in. max.
(25 mm)
8 in. min.
(203 mm)
COMBUSTIBLE
SURFACE
MARBLE, GRANITE, TILE OR
OTHER NON-COMBUSTIBLE
HEARTH EXTENSION
BOTTOM OF
FIREPLACE
Figure 3.7 Fireplace sitting on combustible surface.
Figure 3.8 Fireplace raised a minimum of 6 inches away from
combustible surface.
BOTTOM OF
FIREPLACE
SURFACE MAY BE COMBUSTIBLE
COMBUSTIBLES
UP TO 1 INCH
THICK ALLOWED
UNDER THE OPENING
6 INCHES
MINIMUM
1 INCH MAX.
TO ALLOW FOR
DOOR CLEARANCE
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 6 inches above the combustible fl oor
or hearth. See fi gures 3.7 and 3.8.