8
Heatilator • MEL36, MEL42 Installation Manual • 4044-212 • Rev D • 01/06/15
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.
Figure 3.2 Clearances to Combustible Materials
Minimum Clearances to Combustibles
WITHIN ENCLOSURE AREA
Fireplace to backwall
1/2 in. (13 mm)
Fireplace to sidewall
1/2 in. (13 mm)
Top standoffs to header
0 in. (0 mm)
Door opening to sidewall
12 in. (305 mm)
MANTEL
Mantel minimum height
12 in. (25 mm) from
top of opening
Maximum mantel depth
12 in. (305 mm)
(roof)
(insulation)
0 in. to level
of standoffs
Thimble application shown
(ceiling)
(attic)
Storm Collar
Roof Flashing
1/2 in. (13 mm) to back &
sides of appliance
Must have 2 in. (51 mm)
minimum clearance
to header
0 in.
to floor
Shaded areas
represent
2 in. (51 mm) min.
air space clearance
required around pipe
Combustible Object
48 in.
1219 mm
Ceiling Firestop
