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Vitodens Rigid and Flex Venting Systems Installation
Part
Material
Certified to Standards
Applicability
Exhaust rigid-pipe /
fittings and flexible
vent system
PP(s)
Polypropelene
Stainless steel
UL1738
“Venting systems for
gas-burning appliances,
Categories II, III, IV”
U.S.A./Canada
ULC S636
“Standard for Type BH gas
venting systems”
Combustion air intake pipe
and fitting
Stainless steel
n.a.
PVC-DWV
Schedule 40
ANSI/ASTM D2661
CSA B181.1
ULC S102.2
ANSI/ASTM D2665, D1785
CSA B137.3, B181.2
ANSI/ASTM F441
CPVC
Schedule 40
ANSI/ASTM D2661
CSA B181.1
ULC S102.2
ANSI/ASTM D2665, D1785
CSA B137.3, B181.2
ANSI/ASTM F441
ABS-DWV
Schedule 40
ANSI/ASTM D2661
CSA B181.1
ULC S102.2
ANSI/ASTM D2665, D1785
CSA B137.3, B181.2
ANSI/ASTM F441
Pipe cement,
primer (for combustion air
intake pipe)
PVC
ANSI/ASTM D2564
CSA B137.3
CPVC
ANSI/ASTM F493
CSA B137.6
ABS
ANSI/ASTM D2235
CSA B181.1/B182.1
Note:
Always use latest edition of applicable standard
Approved materials for two-pipe system
CAUTION
On the job site, ensure that non-listed combustion air
pipe materials are not inadvertently used instead of
listed vent pipe material.
CAUTION
Do not use PVC material in exhaust system.
CAUTION
Do not use cellular (foam) core pipe material to vent this
Vitodens boiler.
General Flex Venting Installation
(continued)
General Information