Standard Long Sweep Elbows (For Cpvc Pipes Only) - Viessmann Vitodens 100-W WB1B Series Installation Instructions Manual

Rigid Venting Systems Installation Instructions
Vent Length Requirements

Standard long sweep elbows (for CPVC pipes only)

For plastic pipe only
90° long sweep elbow equivalent to 5 ft. (1.5 m)
Fig. 82
Table 37 Standard long sweep elbows
Material 90° equivalent length elbow
Stainless steel
CPVC plastic pipe
PP(s)
(continued)
45° equivalent length elbow
ft. (m)
3 (0.91)
5 (1.52)
-
Single Pipe Venting (Room Air Dependent)
90° short sweep elbow equivalent to 8 ft. (2.4 m) (if used)
Note: If standard sweep elbows are used the allowable
vent lengths are reduced.
One standard 90° elbow is equivalent to 8 ft. (2.4 m)
of straight pipe.
87° elbow / 87° inspection tee
ft. (m)
2 (0.61)
3 (0.91)
1 (0.30)
ft. (m)
-
-
1.6 (0.50)
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