Clearances; Minimum Clearances To Combustibles - Heatilator MEL36 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.
Ceiling Firestop
Figure 3.2 Clearances to Combustible Materials
8 Heatilator • MEL36, MEL42 Installation Manual • 4044-212 • Rev D • 01/06/15
Storm Collar
Roof Flashing
(insulation)
Shaded areas
represent
2 in. (51 mm) min.
air space clearance
required around pipe
48 in.
1219 mm
0 in.
to floor

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
Thimble application shown
(attic)
(ceiling)
Must have 2 in. (51 mm)
minimum clearance
to header
0 in. to level
of standoffs
1/2 in. (13 mm) to back &
sides of appliance
1/2 in. (13 mm)
1/2 in. (13 mm)
0 in. (0 mm)
12 in. (305 mm)
12 in. (25 mm) from
top of opening
12 in. (305 mm)