Clearances; Minimum Clearances To Combustibles - Heatilator FL92 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 constructed entirely of non-combustible materials (i.e.,
steel studs, concrete board, etc.). Failure to comply may
cause fire.
1/2 in. (13 mm) to
back of appliance
Figure 3.2 Clearances to Combustible Materials
10
Storm Collar
Roof Flashing
(attic)
(insulation)
2 in. (51 mm) min.
Ceiling Firestop
1219 mm
Heatilator • FL92 Installation Manual • 4012-081 • Rev C • 10/03/13

Minimum Clearances to Combustibles

WITHIN ENCLOSURE AREA
Fireplace to backwall
Top standoffs to header
Door opening to sidewall
MANTEL
Mantel minimum height
Maximum mantel depth
Shaded areas
represent
2 in. (51 mm) min.
air space clearance
required around pipe
(ceiling)
Offset/Return (secured
with hanger straps)
(ceiling)
0 in. to level
of standoffs
48 in.
0 in.
to floor
Attic
Insulation
Shield
Must have 2 in. (51 mm)
minimum clearance
to header
1/2 in. (13 mm)
0 in. (0 mm)
26 in. (660 mm)
42 1/2 in. (1080 mm)
12 in. (305 mm)