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11
W415-1361 / 11.28.14
EN
3.3 SPECIAL VENT INSTALLATIONS
3.3.1 PERISCOPE TERMINATION
Use the periscope kit to locate the air termination above grade. The periscope must be installed so that
when fi nal grading is completed, the bottom air slot is located a minimum 12” (304.8mm) above grade. The
maximum allowable vent length is 10’ (3.1m) for a fi replace and 8’ (2.4m) for a stove.
9.4A
12" (305MM)
MIN TO
GRADE
12" (305MM)
MIN TO
GRADE
3.3.2 CORNER TERMINATION
The maximum vent length for a corner installation is 20" (508mm) of horizontal run, in addition to the 45° offset.
In this case zero rise is acceptable when using rigid. Flexible venting must maintain a 6" (152mm) rise.
30" (762MM)
MIN
30" (762MM)
MIN
34" (864MM)
24 1/4"
(616MM)
20" (508mm) MAX
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