Viessmann Vitodens 200-W WB2B Series Installation Instructions Manual page 51

Vitodens Rigid and Flex Venting Systems Installation
Component Parts of the PP(s) Venting System
IMPORTANT
For PP(s) systems, all exhaust vent and air intake piping
and elbows exposed outside, must be UV resistant
polypropylene (supplied by the vent manufacturer).
Always include vent termination length in calculations.
WB1B 26, 35
WB2B 19, 26, 35
B2HA 19, 28, 35
B2HB 19, 26, 35
B2TA 19, 35
B2TB 19, 35
Legend
A Air intake adaptor
B Vent adaptor (if required) field supplied
C Long vent length 3.3 ft. (1 m)
D Short vent length 1.6 ft. (0.5 m)
E 2 pipe to coaxial adaptor (field supplied). Consult
Venting Manual.
F Vertical coaxial termination
G Pipe support system
Direct Venting (Two-pipe System)
(continued)
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