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APPLICATION / LISTING
For specific information on application,
equivalent length of fittings, listings, etc.,
please reference Duravent's installation
instructions for rigid pipe (Document L273).
Duravent's PolyPro vent pipe should not be
installed in areas where the temperature
could exceed 230 F / 110 C.
PERMITS
Check with your local Building Official, Fire
Official, or other authority having jurisdiction
regarding permits, restrictions, and
installation inspections in your area.
MINIMUM CLEARANCE TO
COMBUSTIBLES
Refer to Table A for minimum clearances
to combustible materials. Use the values
shown in this table unless the appliance
manufacturer specifies otherwise. If there
is a conflict between the two, the greater
clearance shall apply. It is prohibited to place
any type of insulation around the venting
system within these clearances.
CAUTION
Installation applications and
terminations shown in these
instructions must be approved by the
manufacturer of the appliance to which
it is applied. Use only listed DuraVent
terminations with PolyPro Venting.
VENT ORIENTATION
4
Minimum Clearance To Combustibles Table
Horizontal
Vertical
IMPORTANT
The vent system must terminate in
accordance with local code requirements
and appropriate National Codes:
In the US: NFPA 54 / ANSI Z223.1
National Fuel Gas Code or the
International Fuel Gas Code.
In Canada: CAN/CGA-B149.1 Natural
Gas Installation Code or CAN/CGA-149.2
Propane Installation Code.
GENERAL INSTALLATION NOTES
Reference the Installation Instructions
provided with Duravent's rigid pipe (L273)
for general instructions. PP Flex must be
enclosed, and used in conjunction with
rigid PP pipe to connect to an appliance.
•
When used to conduct flue gases, PP flex
must not be installed at an angle greater
than 45 degrees from vertical. This will
ensure proper condensate flow back
towards the appliance outlet.
•
PP Flex may be used to bring
combustion air into the appliance. In
these instances, pipe can be unenclosed
and oriented in a vertical or horizontal
position.
•
PP flex must be treated carefully to
prevent damage when being installed
during low temperatures (<41°F, < 5 °C).
In colder weather, pre-warm flex prior
to installation. When relining, it may be
easier to insert flex from the bottom up
Table A
Single Wall: 0" for flue temperatures up to 194*F (90*C).
1/4" (6mm) for flue temperatures up to 230*F (110*C).
CLEARANCE
Flex: N/A- NOT ALLOWED
Single Wall: 0"
Flex: 0" (Must be enclosed)
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