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" (30.5cm) above grade.
The maximum allowable vent length is 10' (3.1m).
12"
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°
XIT INSTALLATION
offset. Using rigid venting, zero rise is acceptable. Using flexible venting, it is recommended to maintain a 6"
(152mm) rise. See illustrations below.
" (50.8cm)
AXIMUM
0" (50.8cm)
MAXIMUM
30" (76.2CM)
MINIMUM
30"
MINIMUM
REAR EXIT INSTALLATION
FLEX VENTING
12" (30.5CM)
MINIMUM
TO GRADE
12"
MINIMUM
6" (152mm)
RISE MINIMUM
30" (76.2CM)
MINIMUM
30"
34 5/8"
MINIMUM
(87.9CM)
9.4B
MAXIMUM 10FT VENT LENGT
TOP EXIT INSTALLATION
20" (50.8cm)
MAXIMUM
RIGID VENTING
20" (50.8cm)
MAXIMUM
W415-1613 / D / 09.20.17
13
EN
12" (30.5CM)
MINIMUM
TO GRADE
12"
MINIMUM
30"
MINIMUM
REAR EXIT