KBD Series Manual 37
PVC/CPVC Equivalent Vent Length Calculaon Sheet
Note: Ensure SW 1 in DIPSW 1 is in “OFF” posion if vent length is greater than 21 (6.4m).
1) 90 elbow
5
2) 45 elbow
2.5
3) IPEX Low Prole Terminaon
5
4) IPEX 4" Concentric Terminaon
20
5) IPEX 3" Concentric Terminaon
20
6)
Royal 3” Concentric Terminaon
20
7)
Royal Low Prole Terminaon
5
8)
3" Tee Terminaon
5
9)
4" Tee Terminaon
5
10) 3" Snorkel Terminaon
15
11) 4" Snorkel Terminaon
15
12) Length of Straight Secon in feet
NA
(add up
lines 1 through
12)
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