Clearances; Minimum Clearances To Combustibles - Heatilator I100 Installation Manual

B. Clearances
WARNING! Risk of Fire!
You must comply with all minimum air space clearances
to combustibles as specified in Figure 3.2. DO NOT pack
required air spaces with insulation or other materials.
Framing or finishing material used on the front of, or in
front of, the fireplace closer than the minimums listed must
be constucted entirely of non-combustible materials (i.e.,
steel studs, concrete board, etc.). Failure to comply may
cause fire.
0 in. to level
of standoffs
Figure 3.3 Clearances to Combustible Materials
Storm Collar
Roof Flashing
2 in. min.
(51 mm)
(attic)
2 in. min.
(51 mm)
Ceiling Firestop
2 in. min.
(51 mm)
0 in.
from floor
Heatilator • ICON I100 • 4013-263 Installers Manual • Rev S • 11/22

Minimum Clearances to Combustibles

WITHIN ENCLOSURE AREA
Fireplace to backwall
Fireplace to sidewall
Top standoffs to header
Door opening to sidewall
MANTEL
Mantel minimum height
Maximum mantel depth
2 in. min.
(51 mm)
Attic
Insulation
Shield
Ceiling Firestop
(ceiling)
2 in. min.
(51 mm)
Offset/Return with
hanger straps
(ceiling)
2 in. min.
Must have 2 in. (51 mm)
(51 mm)
minimum clearance
to header
1-1/2 in. (38mm) from
back of appliance
1-1/2 in. (38mm) from
side of appliance
(except at nailing flanges
where it is 1/2 in. (13 mm)
1-1/2 in. (38 mm)
1-1/2 in. (38 mm)
0 in. (0 mm)
24 in. (610 mm)
20 in. (508 mm)
above opening
12 in. (305 mm)
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