Vent Requirements - Cpvc; Additional Requirements For Ul/Ulc-Listed Cpvc Vent Pipe Material; Exhaust Vent/Air Intake Connection To Boiler - Viessmann Vitodens 200-W WB2B Series Installation Instructions Manual

Direct Venting (Two-pipe System)

Vent Requirements - CPVC

Additional requirements for UL/ULC listed CPVC vent pipe
material
Use UL/ULC listed special plastic pipe (CPVC) for
horizontal (side wall) or vertical (roof) venting of the
Vitodens boilers.
See table below and contact Viessmann to order special
parts.
Prior to installation, check that the correct single-pipe
vent parts were ordered and supplied.
See table below for special starter adaptor and bird screen
models required for your installation. In case of
discrepancies, contact Viessmann.

Exhaust vent/air intake connection to boiler

The vent connection to the Vitodens boiler must be made
with the CPVC starter adaptor and/or parallel adaptor
(see table below). The starter adaptors are intended for
a slip fit and slide into the parallel adaptor with a gentle
twisting motion.
For vent/air intake pipe system, two 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. (see table below).
IMPORTANT
For exhaust vent pipe material:
Do not use any other vent material.
Do not use galvanized pipe, plastic pipe and/or chimney
liners (rigid or flexible) of any kind.
Required starter adaptors for CPVC system
Part
Parallel Pipe Adaptor
CPVC Starter Adaptor WB1B 26, 35, B2TA 19, 35, B2TB 19, 35
Wire Mesh Screen
for Termination
Elbows/Coupling
* 1 See page 40.
* 2 See page 41.
* 3 See page 41.
38
Boiler Model
WB2B 45, 60, B2HA 45, 60, B2HB 45, 57
WB2B 80, 105, B2HA 80, 88, 100, 112, 150
WB2B 19, 26, 35, B2HA 19, 28, 35, B2HB 19, 26, 35
WB2B 45, 60, B2HA 45, 60, B2HB 45, 57
WB2B 80, 105, B2HA 80, 88, 100, 112, 150
WB1B 26, 35, B2TA 19, 35, B2TB 19, 35
WB2B 19, 26, 35, B2HA 19, 28, 35, B2HB 19, 26, 35
WB2B 45, 60, B2HA 45, 60, B2HB 45, 57
WB2B 80, 105, B2HA 80, 88, 100, 112, 150
Vitodens Rigid and Flex Venting Systems Installation
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.and therefore is listed for zero
clearance to combustibles when vented with a
single pipe special venting system (CPVC material).
The zero inches vent clearance to combustibles
for the Vitodens boiler supersedes the clearance to
combustibles listing that appears on the special
venting system marking label.
WARNING
The use of vent material other than listed CPVC,
positive pressure vent pipe and fittings can cause
property damage, severe personal injury and/or loss of life.
Diameter
3 in.
4 in.
2 in. *
3 in. *
4 in. *
2 in.
3 in. (if used)
4 in. (if used)
3 in.
4 in.
Supplier Quantity
Viessmann 1
1
1 Viessmann 2
2
2 2
3 2
Viessmann 2
2
2
2
2