Heat & Glo • Cerona-36, Cerona-42 • 2106-900 Rev. Q • 8/14
48
Fire Risk.
Hearth extension required to protect
combustible floors in front of appliance.
• An 8 inch minimum hearth extension must be constructed
of non-combustible material.
E. Hearth Extension
WARNING
Figure 13.13 Hearth Extension Dimensions
A
B
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
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
Figure 13.11 Position of Board and Template
NON-COMBUSTIBLE
BOARD
FACING TEMPLATE
Figure 13.14 Fireplace Sitting on Combustible Surface.
Figure 13.12 Fireplace Raised a Minimum of 6 Inches Away
from Combustible Surface.
The base of the fireplace may sit on a combustible sur
-
face. The area in front of the fireplace must be protected
by a noncombustible hearth extension, unless the fire
-
place is raised a minimum of 6 inches above the combus
-
tible floor or hearth. See Figures 13.12, 13.13 and 13.14.