15
Unit Raised Above Combustible Exposed Surface
Rules
1. A hearth is not required. However, any exposed surface in front of
fi
replace within 4 inches vertically of the bot-
tom of the unit must be non-combustible and project a minimum distance as shown on page 16. Hearth/
fl
oors/
exposed surface within 4 inches must have a non-combustible
fi
nish
applied over the 1/2 inch insulation board
provided with the engine. This insulation board acts as a thermal break.
2. Minimum hearth projection is determined by a combination of the height of the hearth above the surface of com-
bustible
fl
oor or carpet and the distance between the hearth and the bottom of the
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replace.
3. Combustible baseboards (1 inch thick or less) located on the wall are acceptable provided they are located
below the base of the raised
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replace.
Planning
Framing
Hearth
Face of non-combustible board
Top face of combustible
fl
oor or carpet
Minimum
4” (102 mm)
Base of
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replace
When the appliance is installed directly on carpeting, tile
or other combustible material other than wood
fl
ooring,
the appliance shall be installed on a metal or wood panel
extending the full width and depth of the appliance.