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W415-1517 / A / 09.02.16
12
EN
An acceptable 54" x 20"(1371.6mm x 508mm) non-combustible (i.e. brick, stone or ceramic tile)
hearth extension must be installed.
The hearth must extend a minimum 20"(508mm) in front of the
appliance although if raised a minimum of 6 1/2"(165.1mm) the
20"(508mm) may be reduced to a minimum of 18"(457.2mm).
The hearth must extend a minimum of 6"(152.4mm) to both sides
of the appliance 54"(1371.6mm).
The hearth must be a minimum of 1"(25.4mm) thick cement board (or
equivalent) plus ¼" (6.4mm) ceramic tile.
Ensure that the gap between the appliance and a non-combustible
hearth extension is sealed with sand/cement grout or covered with
an ember strip (or both) to prevent sparks and embers from falling
into this area.
Raised hearths must be constructed of non-combustible materials such as cement blocks or bricks.
While the appliance can be installed directly on the fl oor, a non-combustible hearth extension is required in
front of the appliance, that must not be built higher than the bottom of the appliance faceplate. It may there-
fore be advisable to build the appliance on a raised platform.
A raised hearth together with the appliance built on a raised platform is recommended for easier wood loading and
fi re viewing.
EMBER STRIP
(See “HEARTH
EXAMPLES” Section)
HEARTH EXTENSIONS ARE TO BE INSTALLED ONLY AS DESCRIBED TO PREVENT HIGH
TEMPERATURES FROM OCCURRING ON CONCEALED COMBUSTIBLE MATERIALS. HEARTH
EMBER STRIPS PREVENT BURNING OR HOT PARTICLES FROM INADVERTENTLY FALLING
DIRECTLY ON COMBUSTIBLE SURFACES IN THE EVENT THE BUILDING SHOULD SETTLE AND
DISTURB THE ORIGINAL CONSTRUCTION.
3.3 FLOOR PROTECTION
3.3.1 EMBER STRIP AND HEARTH EXTENSIONS
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