12
the perimeter of the wall plate for weather
protection. Mount the Exterior Wall Plate
to the exterior wall with (4) 1-1/2” screws or
other hardware appropriate for your wall. If
PolyPro vent pipe between the appliance and
the Termination. Secure with Wall Straps and
Locking Bands at the joints as described in
the Joint Connection section.
VertIcal termInatIonS:
For PolyPro vent installations ending in a
vertical termination, the vent system must
terminate at least 2 feet above the roof line or
any wall or vertical structure within 10 feet.
•
Always secure the Vertical Termination
Cap with its support clamp.
•
Do not install anything on top of the
Vertical Termination Cap. The Vertical
Termination Cap is specially designed for
high efficiency boilers which produce
large quantities of moisture due to
condensation of combustion gases.
M&G DuraVent has developed a special end cap
that prevents freezing of the condensate at the
termination. This design allows rain to enter the
termination which also serves to dilute acidic
condensate. However, a Condensate Drain must
be incorporated in the vent system to allow
condensation and rainwater to escape from the
venting system. The drain must include a trap
to prevent combustion gases from entering the
living space.
1.
Choose the appropriate Flashing in
accordance with your roof. For pitched roofs,
an Adjustable Roof Flashing is available in
either aluminum or polypropylene. For flat
roofs an aluminum Flat Roof Flashing is
available.
(Figure 13)
.
2.
For each floor level between the appliance
and the roof, determine the location where
the vent will penetrate through. Cut and
frame an opening through that floor level.
Install the vent pipe through the opening
at that floor level. Install the Firestop Spacer
around the vent pipe on the underside of the
floor penetration. Use the enclosed hardware
Figure 12
ALIGN TABS WITH
MOUNT HOLES
you live in an area where icing is a concern,
be sure to orient the Single Horizontal
Termination so it is pointed upward. This will
prevent icicles from forming on the end of
the cap and will allow rain to enter the vent,
thereby diluting the acidic condensate.
If you are not in an area where icing is a
concern, directing the termination downward
is permissible. On the inside wall, mount the
Interior Wall Plate to the wall and secure with
hardware supplied.
4.
Once the Horizontal Termination is in place,
complete the installation using sections of
Important
If the cap is installed so rain can enter the
cap, a condensate drain with a u-bend
or p-trap made of corrosion resistant
material must be used in the vent system
and/or the appliance must be able to
manage the condensate as directed in
the appliance manufacturer's installation
instructions.
Summary of Contents for DuraVent PolyPro
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