KCM Series Manual 17
Maximum vent length
(90° elbow is equivalent to 5 feet; 45° elbow is equivalent to 2.5 feet.)
0 41 (12.5)**
1 36 (11.0) **
2 31 (9.4) **
3 26 (7.9) **
4 21 (6.4) **
5 16 (4.9) **
6 11 (3.4) **
**SW 1 in DIPSW 1 is “OFF” for lengths greater than
or equal to 21 feet.
(90° elbow is equivalent to 5 feet; 45° elbow is equivalent to 2.5 feet.)
0 100 (30.5)**
1 95 (29.0) **
2 90 (27.4) **
3 85 (25.9) **
4 80 (24.4) **
5 75 (22.9) **
6 70 (21.3) **
(See Twin Pipe PVC/CPVC Vent Installaon secon for
more informaon regarding equivalent vent length
calculaons.)
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