Viessmann Vitodens 200-W WB2B Series Installation Instructions Manual page 18

Side Wall Vent Installation (Coaxial)
Side Wall Venting Layouts (Coaxial)
Layout with basic coaxial vent componentry (continued)
Side wall venting layout
For Vitodens WB2B boiler models 80, 105 and Vitodens
B2HA 80, 88, 100, 112, 150 a transition adaptor is
required (see page 17).
Note: The vent system must be properly supported without
sagging. The Vitodens boilers are not designed to
support the weight of the venting system.
18
Vitodens Rigid and Flex Venting Systems Installation
(continued)
Legend
1 Straight pipe
2 Elbow, 87°
3 Telescopic extension (sliding coupling)
4 Straight pipe
5 Elbow
6 Straight pipe
7 Elbow
8 Vent termination (incl. wall flashings)
IMPORTANT
Total length of vent termination pipe may be shortened if
required. Follow manufacturer's instructions.
9 Protective screen
WARNING
Protective screen MUST be installed.
qP Mounting clip anchoring system