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103448-02 - 6/13
iV. Venting
C. Polypropylene Venting (continued)
Approved Two-Pipe Direct Vent System Option
UNUSED Chimney Chase Installation -
Flexible Vent Pipe and separate Air Intake
Classification Used In These Instructions
M&G/DuraVent Poly Pro Flex
Centrotherm Eco Flex
Vent Exhaust Penetration Thru Structure
Chimney Cap
Air Intake Penetration Thru Structure
Side Wall or Roof terminal
Min. Round Chase Inside Diameter, inch
5
6
Min. Rectangular Chase Inside Dimensions, inch
5 x 5
6 x 6
Nominal Poly Pro Flex (M&G/DuraVent) Liner Size, mm
80
100
Nominal Flex (Centrotherm Eco) Liner Size, mm
80
110
Maximum Total Equivalent Vent Length (Including Flexible Vent Liner in Chase), ft
ALP080B
135
NA
ALP105B
ALP150B
ALP210B
ALP285B
NA
100
ALP399
Maximum Actual Length of Flexible Polypropylene Liner, ft
48
48
Maximum Equivalent Length of Flexible Polypropylene Liner, ft
58
58
Table 12: Summary of PP Flex Two-Pipe Direct Vent System Option
Warning
Follow installation instructions included by the original polypropylene venting component manufacturers,
M&g/DuraVent or Centrotherm, whichever applicable.
Flexible Polypropylene Vent must be installed in an UnUSED chimney. a chimney, either single or
multiple flue type, is considered UNUSED when none of the flues is being used for any appliance
venting.
Where one of the multiple flues is being used for an appliance venting, the flexible vent installation is
not permitted thru any of adjacent flues.
Observe all precautions outlined in either M&g/DuraVent or Centrotherm instructions in addition to
those outlined in these instructions.
Examine all components for possible shipping damage prior to installation.
Proper joint assembly is essential for safe installation.
The venting system must be free to expand and contract and supported in accordance with installation
instructions included by the original polypropylene venting component manufacturers, M&g/DuraVent
or Centrotherm, whichever applicable.
Do not mix vent components or joining methods for different vent systems.
Where a conflict arises between M&G/DuraVent or Centrotherm instructions and these instructions, the
more restrictive instructions shall govern.
Do not apply thermal insulation to vent pipe and fittings.
Do not obtain combustion air from within the building.
Содержание ALP080B
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