DuraVent Venting System For Direct Vent Pro - Manual (Page 7)

7
Figure 4
Figure 5
Figure 6
of pipe into the female end until the
locking lugs are covered. Twist the
female end clockwise an eighth of a
turn to lock sections together (Fig. 5).
Screws are not required to secure the
joint, but are acceptable provided they
do not penetrate the inner wall of the
vent pipe.
(2) Horizontal runs of vent pipe
must be supported to prevent any
downward sags. Horizontal pipe
sections should be supported at least
every 4-feet. Wall Straps can be
used for this purpose. Alternatively,
plumbers tape or other suitable
noncombustible material can be used
to support the vent pipe.
(3) DirectVent Pro venting requires no
sealant, unless specifically required by
appliance manufacturer.
Step 3. With the Appliance Adaptor
and Pipe Section attached to the
appliance, slide the appliance into its
correct location, and mark the wall
for a square hole of the appropriate
size. Refer to Table 1, page 8 for
the correct size square opening
unless otherwise specified by the
appliance manufacturer’s clearance
requirements. The centerline of the
pipe should line up with the center
of the square hole (Fig. 6). Cut
and frame the square hole in the
exterior wall where the vent will
be terminated. A Wall Thimble or
Wall Firestop may be required by the
appliance manufacturer as additional
thermal protection for the wall. If the
wall being penetrated is constructed
of noncombustible material only, i.e.
masonry block, brick, or concrete only,
a hole with zero clearance to the vent
MALE
END
FEMALE
END
OPTIONAL
SCREWS
OF HOLE
CENTER
L
C