12
3.3
SPECIAL VENT INSTALLATIONS
3.3.1 PERISCOPE TERMINATION
EN
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" (30.5cm) above grade.
The maximum allowable vent length is 10' (3.1m).
12"
MINIMUM
30"
MINIMUM
3.3.2 CORNER TERMINATION
MAXIMUM 10FT VENT LENGTH
The maximum vent length for a corner installation is 20" (50.8cm) of horizontal run, in addition to the 45° off-
TALLATION
set. In this case zero rise is acceptable. See illustrations below. It is recommended to maintain a 6" (152mm)
rise (as illustrated).
MUM
MUM
W415-2183 / B / 02.10.17
24"
(61cm)
MINIMUM
REAR EXIT INSTALLATION
12"
(30.5cm)
MIN TO
12"
GRADE
MINIMUM
6" RISE
MINIMUM
24" (61cm)
MINIMUM
30"
MINIMUM
35 1/2"
(90.2cm)
9.4B
INSTALLATION D'UNE ÉVACUA-
TION SUR LE DESSUS
20" (50.8cm)
MAXIMUM
12"
(30.5cm) MIN
TO GRADE
12"
MINIMUM
30"
MINIMUM
COURSE MAXIMALE D
INSTA