Clearances - Heatilator C40 Installation Manual

B. Clearances
WARNING! Risk of Fire!
You must comply with all minimum air space clearances to combustibles as specifi ed in Figure 3.2. DO NOT pack required
air spaces with insulation or other materials. Framing or fi nishing material used on the front of, or in front of, the fi replace
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 fi re.
Figure 3.2
Heatilator • C40 Constitution • 480-2340 Installation Manual • Rev B 01-29-13
Storm Collar
Roof Flashing
2 in. min.
(51 mm)
(attic)
2 in. (51 mm) min.
Ceiling Firestop
2 in. (51 mm) min.
0 in. to level
of standoffs
0 in.
to floor
Clearances to Combustible Materials
2 in. (51 mm) min.
Attic
Insulation
Shield
Ceiling Firestop
(ceiling)
2 in. (51 mm) min. 2 in. (51 mm) min.
Offset/Return with
hanger straps
(ceiling)
2 in. (51 mm) min.
Must have 2 in. (51 mm)
minimum clearance
to header
1 in. (25mm) to side of appliance
(except at nailing flanges where it is 1/2 in. [13 mm])
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