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5773 597 - 04
Vitocrossal 200, CM2 400, 500 and 620 Installation
Potential gaps between the vent/air intake pipes and
the surrounding construction which may cause air, rain
or flue gases to leak into the wall or the building, must
be sealed with approved sealant /caulking to prevent
leakage of any kind.
This PP vent system is constructed from flame-retardant
plastic [polypropylene rated for a maximum temperature
of 230º F (110º C)].
The PP venting system components must be listed
to ULC S636 / UL-1738 (contact one of the venting
suppliers below).
DO NOT mix pipe, fittings, or joining methods from
different vent system manufacturers.
The vent length requirements stated in this manual
(on page 45 for two pipe vent installations and page
47 for single pipe installations) must be observed.
If using flexible vent or air intake pipe, reduce the max.
equivalent length allowed by 25%.
The PP venting material can be extended (without
exceeding the maximum equivalent length) beyond
the outside wall of the structure, provided that the PP
venting material is installed in an enclosed, insulated
and waterproof chase that is acceptable for outdoor
installation. The vent termination location must comply
with the instructions and codes stated in this manual.
Requirement for UL/ULC Listed Rigid SS/PP(s) Vent Pipe Material
Requirements for PP and stainless steel
The venting system must be installed by a licensed
professional heating contractor familiar with the operation
and maintenance of heating appliances and venting.
Before installing, ensure that the complete installation
literature has been read. Failure to follow proper
installation procedures as stated in these instructions,
including vent pitch and proper appliance connections,
may violate local, provincial/state, or national codes
and cause unsafe conditions which may lead to severe
property damage or personal injury.
The venting system must be installed in accordance with
local building code requirements as well as national codes.
For installations in Canada use CAN/CSA-B149.1 Natural
Gas Installation Code or CAN/CSA-B149.2
Propane Installation Code as applicable; in the U.S. use the
National Fuel Gas Code ANSI Z223.1 or NFPA Standard 54.
To ensure safe operation of the appliance, Viessmann
recommends that the system be inspected once a year
by a qualified service technician.
Every venting system must be planned and installed for
optimum performance and safety. These Installation
Instructions are designed to help you determine venting
requirements and limitations with respect to installation.
Please read and follow these instructions carefully.
It is the responsibility of the installer to contact local
building and fire officials concerning any installation
restrictions and/or inspection requirements that may
apply. Permits may be required before commencement
of the installation.
The vent termination for side wall vent installations
should be located on a wall that is least affected by
prevailing winds. High winds may affect boiler operation
and/or degrade the exterior finish of the wall. They may
also cause recirculation of the appliance’s own flue
products. Recirculation of flue products can result in
poor combustion and inlet condensation problems.
If wind is a problem, steps must be taken to shield the
vent termination from high winds, such as building a
fence or planting shrubs. Ensure that the total equivalent
vent length is not exceeded.
Because of its sealed combustion chamber, the
Vitocrossal 200 gas-fired condensing boiler is suitable
for operation with balanced flue (when using air intake
system).
Use only material listed in table on page 35, entitled
“Approved venting materials”.
IMPORTANT
IMPORTANT
Side wall vent installations must include a protective
screen.
Vent System Suppliers
Use special venting system (UL/ULC listed for Category
IV) for exhaust vent material of the Vitocrossal boilers.
Contact on of the following suppliers to order parts.
Both suppliers deliver PP(s) rigid and flexible vents
in a variety of sizes.
M&G / Duravent
Centrotherm InnoFlue
M&G / Duravent
Tel. 800-835-4429
Fax. 518-649-9700
Fax: 518-463-5271
www.duravent.com
Centrotherm InnoFlue
Eco Systems. LLC
418 South Pearl St.
Albany, New York 12202
Tel. (518) 434-3400
Fax. (518) 618-3166
www.centrotherm.us.com
Venting
