Vent Requirements - Flexible Vent System / Connector Pipes; Additional Requirements For Ul/Ulc-Listed Flexible Vent System/Connector Vent Pipe Material; Exhaust Vent/Air Intake Connection To Boiler - Viessmann Vitodens 100-W WB1B Series Installation Instructions Manual

Flexible Venting Installation

Vent Requirements - Flexible Vent System / Connector Pipes

Additional requirements for UL/ULC-listed flexible vent system / connector pipe vent material

Exhaust vent/air intake connection to boiler

The vent/air intake connection to the Vitodens boiler must
be made according to table 5. The starter adaptors are
intended for a slip fit and slide into the parallel adaptor or
boiler adaptor with a gentle twisting motion.
For air intake pipe system, one wire mesh screens (bird
screen) must be ordered from Viessmann. These parts
are available in pre-cut diameters of 2 in., 3 in. and 4 in.
Table 5. Required starter adaptors for CPVC air intake system / PPs vent system
Part
Parallel Pipe Adaptor
CPVC Starter Adaptor
for Air Intake
Wire Mesh Screen
for Air Intake
Termination
Increaser Adaptor
for Exhaust Pipe
Transition Adaptor
Boiler Model
WB2B 45, 60
B2HA 45,60
WB2B 80, 105
B2HA 80, 100, 112, 150
WB1B 26, 35,
WB2B 19, 26, 35
B2HA 19, 28, 35
B2HB 19, 26, 35
B2TA 19, 35
B2TB 19, 35
WB2B 45, 60
B2HA 45, 60
WB2B 80, 105
B2HA 80, 100, 112, 150
WB1B 26, 35
WB2B 19, 26, 35
B2HA 19, 28, 35
B2HB 19, 26, 35
B2TA 19, 35
B2TB 19, 35
WB2B 45, 60
B2HA 45, 60
WB2B 80, 105
B2HA 80, 100, 112, 150
WB1B 26, 35
WB2B 19, 26, 35
B2HA 19, 28, 35
B2HB 19, 26, 35
B2TA 19, 35
B2TB 19, 35
WB2B 80, 105
B2HA 80, 100, 112, 150
Direct Venting (Two-pipe System)
Note: The Vitodens boiler has passed the zero inches vent
clearance to combustibles testing requirements
dictated by the Harmonized Standard ANSI Z21.13.
CSA 4.9.2007 and therefore is listed for zero
clearance to combustibles when vented with a
single pipe special venting system.
WARNING
The use of vent material other than listed flexible PP(s),
positive pressure vent pipe and fittings can cause property
damage, severe personal injury and/or loss of life.
Diameter
3 in. (80 mm)
3 in. (80 mm)
4 in. (100 mm)
4 in. (100 mm)
2 in. (50 mm)
2 in. (50 mm)
2 in. (50 mm)
2 in. (50 mm)
2 in. (50 mm)
2 in. (50 mm)
3 in. (80 mm)
3 in. (80 mm)
4 in. (100 mm)
4 in. (100 mm)
2 in. (50 mm)
3 in. (80 mm), 4 in. (100 mm) if used
3 in. (80 mm), 4 in. (100 mm) if used
3 in. (80 mm), 4 in. (100 mm) if used
3 in. (80 mm), 4 in. (100 mm) if used
3 in. (80 mm), 4 in. (100 mm) if used
3 in. (80 mm)
3 in. (80 mm)
4 in. (100 mm)
4 in. (100 mm)
2b to 3 in. (60 to 80 mm)
2b to 3 in. (60 to 80 mm)
2b to 3 in. (60 to 80 mm)
2b to 3 in. (60 to 80 mm)
2b to 3 in. (60 to 80 mm)
2b to 3 in. (60 to 80 mm)
4e to 4 in. (110 to 100 mm)
4e to 4 in. (110 to 100 mm)
Supplier Quantity
Viessmann 1
Viessmann 1
Viessmann 1
Field supplied 1
Field supplied 1
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