3.3.1 Clearances with single wall pipe CANADA
USA
14.25" (362 mm) (from the back of the blower box)
14.25" (362 mm) (from the back of the blower box)
A B C D E F G
18" (457 mm) 5" (127 mm)
18" (457 mm) 5" (127 mm)
1" (25 mm)
1" (25 mm)
69" (175 cm) minimum
69" (175 cm) minimum
12’’ (305 mm) 5" (127 mm)
12’’ (305 mm) 5" (127 mm)
H¹
24" (610 mm) minimum
24" (610 mm) minimum
I
11" (279 mm)
11" (279 mm)
¹ A minimum clearance to the left is required for maintenance or replacement of components, however, a larger clearance is suggested. 3.3.2 Clearances with double wall connector (The use of a single wall pipe assembly with a heat shield certified to 6 "combustible materials, can be used. Only in this case, the same clearances apply as with a certified double pipe.) CANADA USA A
6.75" (171 mm) (from the back of the blower box)
6.75" (171 mm) (from the back of the blower box)
B¹
11.5" (292 mm)
11.5" (292 mm)
C D E F G
5" (127 mm) 1" (25 mm)
5" (127 mm) 1" (25 mm)
69" (175 cm) minimum
69" (175 cm) minimum
12’’ (305 mm) 5" (127 mm)
12’’ (305 mm) 5" (127 mm)
H²
24" (610 mm) minimum
24" (610 mm) minimum
I
11" (279 mm) 11" (279 mm) ¹ Recommended clearance, otherwise use the clearance provided by the double wall black pipe manufacturer. ² A minimum clearance to the left is required for maintenance or replacement of components, however, a larger clearance is suggested.
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