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W415-2835 / B / 04.05.21
EN
16
venting requirements
2.4 venting application fl ow chart
TOP EXIT
Horizontal Termination
Vertical Termination
Vertical rise is equal
to or greater than
the horizontal run
Vertical rise is less
than horizontal run
Vertical rise is equal
to or greater than
the horizontal run
Vertical rise is less
than horizontal run
Horizontal run +
vertical rise to
maximum of
35 feet (10.7m)
Horizontal run +
vertical rise to
maximum of 24.75
feet (7.5m)
Horizontal run +
vertical rise to
maximum of
35 feet (10.7m)
Horizontal run +
vertical rise to
maximum of
35 feet (10.7m)
4.2 times the
vertical rise equal to
or greater than the
horizontal run
3 times the vertical
rise equal to or
greater than the
horizontal run
REAR EXIT
Horizontal Termination
Vertical Termination
Vertical rise is equal
to or greater than
the horizontal run
Vertical rise is less
than horizontal run
Vertical rise is equal
to or greater than
the horizontal run
Vertical rise is less
than horizontal run
Horizontal run +
vertical rise to
Horizontal run +
vertical rise to
maximum of
24.75 feet (7.5m)
Horizontal run +
vertical rise to
Horizontal run +
vertical rise to
3.5 times the
vertical rise equal to
or greater than the
horizontal run
3 times the vertical
rise equal to or
greater than the
horizontal run
maximum of 40 feet
(12m)
maximum of 40 feet
(12m)
maximum of 40 feet
(12m)
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