15
Unit Raised Above Combustible Hearth or Floor
Rules
1. A hearth is not required. However, any hearth/
fl
oor in front of
fi
replace within 4 inches vertically of the bottom
of the unit must be non-combustible and project a minimum distance as shown on page 16. Hearth/
fl
oors
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
fi
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
fi
replace.
Planning
Framing
Hearth
Face of
cement
board
Top face of combustible
fl
oor or carpet
Minimum
4” (102 mm)
Base of
fi
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.
Note:
Any shims used underneath to raise the heater should
be set-back 1/2” behind front face of framing otherwise top
face of shims may be visible.
