Installation Instructions

16
Wherever possible, use 45°
Elbows instead of 90° Elbows. The
45° Elbow offers less restriction to the
ow of ue gases and intake air.
Step 7. Slip the Roof Flashing over
the Pipe Section(s) protruding through
the roof. Use a non-hardening sealant
between the Roof Flashing and the
roong to prevent water leakage.
Secure the base of the Roof Flashing
to the roof with roong nails. Ensure
the roong material overlaps the
top edge of the Roof Flashing (Fig.
18). Verify that you have at least the
minimum clearance to combustibles at
the rooine and in the attic.
Step 8. Continue to add Pipe Sections
until the height of the system (before
adding the Cap) meets the minimum
building code requirements as
described in (Table 2 and Fig. 17).
Note that for steep roof pitches, the
vent height must be increased. In
high wind conditions, nearby trees,
adjoining rooines, steep pitched
roofs, and other similar factors can
result in poor draft, or down drafting.
In these cases, increasing the vent
height or switching to the High Wind
Termination Cap may help to solve the
problem.
Step 9. Slip the Storm Collar over
the Pipe Section, and push it down to
the top of the Roof Flashing (Fig. 18).
Use non-hardening sealant between
the Storm Collar and the Pipe Section.
Step 10. Holding the bottom of the
Termination Cap only, twist lock
the cap onto the last Pipe Section
protruding above the rooine.

 For multi-story vertical
installations, a Ceiling Firestop is
required at the second oor, and any
subsequent oors (Fig. 19). Refer
to Table 1, page 8. Cut and frame a
square opening for installation of the
Ceiling Firestop.
 If Vent passes through any
occupied areas above the rst oor,
including closets and storage spaces,
it must be enclosed. The enclosure
may be framed and sheetrocked with
standard construction materials, but
required clearances to combustibles
must be maintained. Consult the
appliance manufacturer’s installation
instructions for the minimum allowable
clearance between the outside of

DIMENSION
FROM TABLE 2
"H" OBTAINED


 Minim
Feet Meters
Flat to 7/12 1 0.3
Over 7/12 to 8/12 1.5 0.46
Over 8/12 to 9/12 2 0.61
Over 9/12 to 10/12 2.5 0.76
Over 10/12 to 11/12 3.25 0.99
Over 11/12 to 12/12 4 1.22
Over 12/12 to 14/12 5 1.52
Over 14/12 to 16/12 6 1.83
Over 16/12 to 18/12 7 2.13
Over 18/12 to 20/12 7.5 2.29
Over 10/12 to 21/12 8 2.44