Heatilator ICON I100 Installation Manual page 14

E. Frame the Fireplace
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• A minimum 1-1/2 in. (38 mm) air clearance must be
maintained at the back and 1-1/2 in. (38 mm) to the
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• Chimney sections at any level require a 2 in. (51 mm)
minimum air space clearance between the framing and
chimney section.
WARNING! Risk of Fire!
minimum air space clearances to combustibles. DO NOT
pack required air spaces with insulation or other materi-
als.
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17 in. (368 mm)
framing.
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30 1/2 in.*
(772 mm)
Figure 3.11 Framing the Fireplace

Comply with all minimum clear-
You must comply with all
70 in.
61 5/8 in.
(1803 mm)
(1565 mm)
* If interior of chase will be
drywalled, add the thick-
ness to this measurement.
Heatilator • ICON I100 • 4013-263 Installers Manual • Rev S • 11/22
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CAUTION! Risk of Cuts/Abrasions. Wear protective gloves
and safety glasses during installation. Sheet metal edges
are sharp.
F. Secure and Level the Fireplace
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WARNING! Risk of Fire!
loose insulation.
• DO NOT install against vapor barriers or exposed
insulation.
• Secure insulation and vapor barriers.
• Provide minimum air space clearances at the sides and
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1/2 in.
(13 mm)
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Use only non-combustible
material below the top of
the front standoffs.
8 in. (203 mm) extra space
needed (both sides) for outside air
connection. If outside air duct has
no bend, this dimension may be
reduced as long as minimum
clearances are met.
Prevent contact with sagging,
Fireplace must be set out
1/2 in. (13 mm) in front of
the face of the framing
material.