B. Clearances
WARNING
Fire Risk
• Comply with all minimum clearances to combustibles as specified.
Failure to comply may cause fire.
Storm Collar
Roof Flashing
2 in. min. 
(51 mm)
(attic)
2 in. min. (51 mm)
Attic
Insulation
Shield
Ceiling Firestop
| (ceiling) |
2 in. min. | 2 in. min. |
(51 mm) | (51 mm) |
Ceiling Firestop | Offset/Return with |
| hanger straps |
| (ceiling) |
2 in. min.
(51 mm) 
0 in. to level of standoffs
2 in. min. Must have 2 in. (51 mm)
(51 mm) minimum clearance to header
| 1 in. (25 mm) to back |
| of appliance |
0 in. | 1 in. (25 mm) to side of appliance |
(except at nailing flanges where it is 1/2 in. (13 mm)) | |
to floor |
|
Figure 3.2 Clearances to Combustible Materials
Note: Chimney air kit is not shown, but required in Canada.
10 | Heat & Glo • |
