For Coaxial Venting Systems Only; For Flex Venting Systems Only; Common Venting - Viessmann Vitodens 200-W WB2B Series Installation Instructions Manual

Safety
Important Regulatory and Installation Requirements
Clearance to combustibles
Top
0 in. (mm)
Vent-air intake system must be properly installed and sealed.
The venting system may be concealed in a chase.
If venting system passes through an unheated space,
such as an attic, it must be insulated. The insulation must
have an R value sufficient to prevent freezing of the
condensate. Armaflex insulation with b in. thickness and
higher can be used.

For coaxial venting systems only

Minimum and maximum wall thickness through which the
horizontal vent-air intake termination may be installed:
Minimum: 1 in. (25.4 mm)
Maximum: 19.6 in. (497.8 mm)

For flex venting systems only

Flexible vent pipe may be installed as a liner within a
masonry, metal or factory-built chimney.
WARNING
The Vitodens 100-W and 222-F boilers are NOT
approved for common-venting applications. Do not
attempt to common-vent the Vitodens boilers with
any other appliance.

Common Venting

IMPORTANT
Some Vitodens 200-W boilers are approved for common
venting applications. Refer to the chart below to determine
which Vitodens are approved for common venting.
Vitodens Boilers Approved for Common Venting
B2HA 45, 60, 80, 88,100, 112 and 150
B2HB 45, 57
10
Front Rear
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Vitodens Rigid and Flex Venting Systems Installation
(continued)
Left
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WARNING
Failure to ensure that all flue gases have been safely
vented to the outdoors can cause property damage,
severe personal injury, or loss of life. Flue gases may
contain deadly carbon monoxide.
CAUTION
Under certain climatic conditions some building
materials may be affected by flue products expelled
in close proximity to unprotected surfaces. Sealing
or shielding of the exposed surfaces with a corrosion
resistant material (e.g. aluminum sheeting) may be
required to prevent staining or deterioration. The
protective material should be attached and sealed (if
necessary) to the building before attaching the vent
termination. It is strongly recommended to install the
vent termination on the leeward side of the building.
All Vitodens boilers vent under positive pressure and are
Category IV boilers.
For more information on common venting
refer to the Vitodens Common Venting
Installation Instructions.
Vitodens Boilers NOT Approved for Common Venting
WB2A 24, 32, 44 and 60
WB2B 19, 26, 35, 45, 60, 80 and 105
B2HA 19, 28 and 35
B2HB 19, 26 and 35
B2TA 19 and 35
B2TB 19 and 35
Right Vent pipe
0 in. (mm)