Direct Venting Options (Two-Pipe System) - Viessmann Vitodens 100-W WB1B Series Installation Instructions Manual

Rigid Venting Systems Installation Instructions

Direct Venting Options (Two-pipe System)

Boiler models Vitodens 100-W WB1B 26, 35 and
Vitodens 200-W WB2B 19, 26, 35
For double-pipe installation, the combustion
air inlet cover must be in place.
Fig. 30 Single or double pipe installation
Legend
A Combustion air
B Flue gas
A
B
A
As opposed to coaxial venting systems, the two-pipe
venting system draws combustion air A through a
separate air intake pipe from the outdoors. Flue gases
B are discharged to the outdoors via the single-pipe
of the special venting system. The two-pipe system is
flexible in the selection of materials offered by different
manufacturers and the location of the vent/air intake
termination.
Read the following exhaust vent/air intake requirements
carefully before commencing with the installation.
Boiler models Vitodens 200-W WB2B 45, 60, 80, 105
Fig. 31 Parallel adaptor
Legend
A Combustion air
B Flue gas
Componentry
B
A
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