Viessmann Vitodens 100-W WB1B Series Installation Instructions Manual page 16

Side Wall Vent Installation (Coaxial)
Side Wall Venting Layouts (Coaxial)
Layout with basic coaxial vent componentry (continued)
Fig. 6 Side wall venting layout
For Vitodens WB2B boiler models 80, 105 a transition
adaptor is required (see page 32).
16
Rigid Venting Systems Installation Instructions
(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