B. Clearances
WARNING
Fire Risk
• Comply with all minimum clearances to combustibles as specifi ed.
Failure to comply may cause fi re.
Storm Collar
Roof Flashing
2 in. min.
(51 mm)
(attic)
2 in. (51 mm) min.
Firestop Spacer
2 in. (51 mm) min.
2 in. (51 mm) min.
Attic
Insulation
Shield
Firestop Spacer
(ceiling)
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
0 in. to level of standoffs
0 in. | 1/2 in. (13 mm) to side of appliance |
to floor |
Figure 3.2 Clearances to Combustible Materials
10 | Heatilator • ST42A • 35038 Rev G • 02/05 |
