Heatilator • CST42A • 4012-012 Rev J • 08/06
10
B. Clearances
2 in. (51 mm) min.
0 in. to level
of standoffs
Attic
Insulation
Shield
Ceiling Firestop
(ceiling)
(roof)
(attic)
(ceiling)
Ceiling Firestop
Offset/Return with
hanger straps
Storm Collar
Roof Flashing
1/2 in. (13 mm) to sides of appliance
2 in. (51 mm) min.
2 in. min.
(51 mm)
Must have 2 in. (51 mm)
minimum clearance
to header
0 in.
to floor
2 in. (51 mm) min.
2 in. (51 mm) min.
2 in. (51 mm) min.
2 in. (51 mm) min.
3,!&LUE!DAPTER
Figure 3.2 Clearances to Combustible Materials
Fire Risk
• Comply with all minimum clearances to
combustibles as speci
fi
ed.
Failure to comply may cause
fi
re.
WARNING