Heatilator I60 Installation Manual page 31

1. Fireplace Installed Flush on the Floor and
Hearth Extension Raised to Bottom of Firebox
Opening
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material.
When creating the platform, allow for the thickness
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Note: Maximum height from floor under fireplace
to top of finished hearth extension is 7 5/8 in.
Bottom of fireplace opening
Continuous,
non-combustible sealant
Tile, stone or other
non-combustible material
1/2 in. Micore
or equivalent
insulation
Floor constructed of wood or
other combustible material
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tions apply.
Figure 7.4 Hearth Extension Construction
Vinyl Flooring
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Protective
Metal Hearth
Strip
2 in. (51 mm)
required
Heatilator • I60/I80 • 4013-260 Installers Manual • Rev W • 03/23
Note: The bottom of the fireplace
opening is 7-5/8 in. (194 mm)
above the bottom of the
fireplace. Finished hearth must
NOT extend above this level.
Noncombustible
Finishing Material
20 in. Min.
Hearth Extension
Noncombustible
Framing Material
1/2 in. Micore
or equivalent
insulation
Figure 7.5 Raised Platform Hearth Extension Detail
Noncombustible
Framing Material
Figure 7.6 Raised Platform Hearth Extension-Framing
Non-combustible
Finishing Materials
Figure 7.7 Raised Platform Hearth Extension-Finishing
Floor
Protective Metal
Hearth Strips
HX4 or
equivalent