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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 ue type, is considered UNUSED when none of the ues is being used for any appliance
venting.
Where one of the multiple ues is being used for an appliance venting, the exible vent installation is
not permitted thru any of adjacent ues.
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 conict 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 ttings.
Do not obtain combustion air from within the building.
Figure 15: Flexible Vent in Masonry
Chimney with Separate Air Intake
IV. Venting C. Polypropylene Venting (continued)
Venting of Other Appliances (or Fireplace)
into Chase or Adjacent Flues Prohibited!
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