Approved Material For Single Pipe Vent System; Support System; Flashing And Storm Collar Installation - Viessmann Vitocrossal 300 CU3A Installation Instructions Manual

Single Pipe Venting (Room Air Dependent)
General Installation Information
Approved materials for single pipe vent system
Part
Exhaust pipe and fitting
Pipe cement, primer (for
exhaust pipe and fitting)
CAUTION
Do not use cellular (foam) core pipe material to vent the
Vitocrossal 300 CU3A boiler.

Support system

The venting system must be securely supported by a
support system suitable for the weight and design of the
materials employed.
The Vitocrossal 300 CU3A boiler is not designed to
support the weight of the venting system.
Use supports to transfer the weight of an installation
to the building structure. There are different types of
supports available and their capacity varies with each
type and diameter.
The following support types are available at your local
vent material supplier...
anchor plate

wall support

roof support

floor support

suspension band (hanger).

In addition to the support types listed, mounting clips can
be used to support the weight of the venting system.
Contact your vent material supplier for more information
specific to your installation.
Follow the installation instructions supplied by the special
venting manufacturer.
46
(continued)
Material Certified to Standards
Stainless steel UL1738
"Venting systems for gas-burning appliances,
Categories II, III, IV"
ULC S636
"standard for Type BH gas venting systems"
CPVC UL1738
"Venting systems for gas-burning appliances,
Categories II, III, IV"
ULC S636
"standard for Type BH gas venting systems"
Class IIB 90°C
PP(s) UL1738
"Venting systems for gas-burning appliances,
Categories II, III, IV"
ULC S636
"standard for Type BH gas venting systems"
Class IIC 110°C
CPVC ULC S636
"Standard for Type BH gas venting systems"
Class IIB 90°C
CU3A Venting Systems Installation
CAUTION
Do not use PVC material in exhaust system.

Flashing and storm collar installation

Flashings and storm collars are field supplied. Flashings
and storm collars suitable for Type B vent materials (or
better) may be used.
To obtain flashings and storm collars, please contact your
local vent material supplier. Follow the installation
instructions supplied by the special venting manufacturer.
Follow local codes to properly isolate the exhaust vent
pipe when passing through floors, ceiling and roof.
Always check the marking on the pipe to make sure you
are using the correct material.
Applicability
U.S.A./Canada