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36
KBP Series Manual
PVC/CPVC Equivalent Vent Length Calculati n Sheet
Note: Ensure SW 1 in DIPSW 1 is in “OFF” positi n if vent length is greater than 21ft 6.4m).
Fi
g / Terminati n Type
Number of
Equivalent Vent Total Equivalent
1)
90 elbow
x
5
=
2)
45 elbow
x
2.5
=
3)
IPEX Low Pro le Termina on
X
5
=
4)
IPEX 4" Concentric Termina on
x
20
=
5)
IPEX 3" Concentric Termina on
x
20
=
6)
3" Tee Termina on
x
5
=
7)
4" Tee Termina on
x
5
=
8)
3" Snorkel Termina on
x
15
=
9)
4" Snorkel Termina on
x
15
=
10)
Length of Straight Secti n in feet
NA
=
Total
(add up
lines 1 through
Equivalent Vent Length Calcula on Sheet
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