19
5.4 Approved Venting Materials
5 - COMBUSTION AIR AND VENT PIPING
5.5 Vent Termination
•
coaxial vent kit.
Use horizontal pipe for vent and 90° elbow for
• Separate vent terminal from air inlet terminal to prevent
at sidewall, air inlet terminal shall be at least 36" or more
away from vent terminal.
• Locate combustion air termination as far as possible from
swimming pool, swimming pool pump house, and other
sources of airborne chlorine.
• Locate combustion air and vent terminals as required by
authority having jurisdiction.
Installation shall conform to requirements of authority having
jurisdiction or in absence of such requirements:
• USA - National Fuel Gas Code, ANSI Z223.1/NFPA 54.
WARNING
Manufacturer recommends this condensing boiler be
vented with approved polypropylene venting material.
Use only materials listed below for vent pipe, intake
death or serious injury.
!
WARNING
pipes are to be used. When using venting material
other than boiler manufacturer's venting, note the
correct installation procedure. Failure to follow these
instructions could result in death, or serious injury.
!
WARNING
•
thermal insulation shall be prohibited.
•
result in death, or serious injury.
• Coaxial venting shall be fastened with screws. Dual
!
is subject to dirty or dusty intake air. Boiler performance at
If interior or exterior construction in vicinity of boiler is taking
particulate dust. If boiler is exposed to any dust or dirt it
must be cleaned and serviced.
1.
Venting shall be properly supported.
2.
Boiler shall not support any type of vent system.
3.
components must conform to ASTM and ANSI standards.
In Canada ULC S636 and in the USA UL 1738 schedule 40
CPVC are the only approved vent system to be used as an
alternative to polypropylene venting for the exhaust pipe.
4.
Manufacturer requires use of a mechanical fastener at
every
polypropylene vent system.
WARNING
Pipe outdoor combustion air directly to boiler air
connection. Ensure combustion air does not contain
contaminants and is not drawn from an area likely
to have contaminants per Table 5-2. For example,
never pipe combustion air from areas near swimming
pools or laundry room exhaust vents. Contaminated
combustion air will damage boiler resulting in death or
serious injury.
!
Approved Polypropylene Manufacturers
* Natalini
* DuraVent
®
* Centrotherm
* Z-Flex
®
Note: Maximum equivalent length may vary between
manufacturers.
240013360
REV A [07/01/2021]
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