13
EN
W415-1398 / C / 06.15.17
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).
3.3.2 CORNER TERMINATION
The maximum vent length for a corner installation is 20" (50.8cm) of horizontal run, in addition to the 45°
offset. In this case zero rise is acceptable. When using rigid venting, it is required to maintain a 6" (152mm)
rise. When using flexible venting, see illustrations below.
6” (152mm)
20
” (50.8cm)
MAXIMUM
9.4
B
12
" (30.5CM)
MINIMUM
TO GRADE
30
" (76.2CM
)
MINIMUM
30
" (76.2CM
)
MINIMUM
34
5/8"
(87.9
CM
)
12
" (30.5CM)
MINIMUM
TO GRADE
RISE MINIMUM
Summary of Contents for CB30NTR
Page 11: ...11 EN W415 1398 C 06 15 17 3 2 TYPICAL VENT INSTALLATION...
Page 12: ...12 EN W415 1398 C 06 15 17 See VENTING section...
Page 42: ...42 EN W415 1398 C 06 15 17 5 1 MINIMUM FRAMING DIMENSIONS...
Page 46: ...46 EN W415 1398 C 06 15 17 MAXIMUM REAR VENT CLEARANCES EXAMPLE 1...
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