Superior SDVPF-N-B Installation Instructions Manual page 17

Use a carpenter's level to measure from a
constant surface and adjust the support straps
as necessary.
It is important to maintain the required clear-
ances to combustibles: 1" (25 mm) at all sides
for all vertical runs; and 3" (76 mm) at the top,
1" (25 mm) at sides, and 1" (25 mm) at the
bottom for all horizontal / inclined runs.
H. Frame roof opening - Identify location for
vent at the roof. Cut and/or frame opening per
Roof Framing Chart and Figure 25.
C
D
Framing Dimensions for Roof
Inches (millimeters)
Pitch C
0/12 10-1/2 in.
(267 mm)
6/12 10-1/2 in.
(267 mm)
12/12 10-1/2 in.
(267 mm)
Figure 25
- Roof Framing
I. Install the roof flashing - Extend the vent
sections through the roof structure. Install the
roof flashing over the vent section and position
such that the vent column rises vertically (use
carpenters level - see Figure 26 ). Nail along
perimeter to secure flashing or adjust roofing
to overlap the flashing edges at top and sides
only and trim where necessary. Seal the top
and both sides of the flashing with waterproof
caulking.
J. Install the storm collar - Install the storm
collar, supplied with the flashing, over the vent /
flashing joint. See Figure 26. Loosen the storm
collar screw. Slide collar down until it meets
the top of the flashing. Tighten the adjusting
screw. Apply non-combustible caulking or
mastic around the circumference of the joint
to provide a water tight seal.
D
10-1/2 in.
(267 mm)
12 in.
(305 mm)
17 3/4 in.
Figure 26
(451 mm)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Storm
Collar
Flashing
K. Install the vertical termination - The final
Step involves installation of the SV4.5CGV-1
Vertical Termination. Extend the vent sections
to the height as shown in the "Vertical vent
termination section" (Page 6, Figures 3A and
3B). The SV4.5CGV-1 Vertical Termination
(Figure 27) can be installed in the exact same
fashion as any other Secure Vent section. Align
the termination over the end of the previously
installed section, adjusting the radial alignment
until the four locking dimples of the termination
are aligned with the inlets of the four incline
channels of the last vent section. Push the ter-
mination down until it fully engages, then twist
the termination clockwise running the dimples
down and along the incline channels until they
are seated at the end of the channels.
Figure 27
If the vent system extends more than 5 feet (1.5
m) above the roof flashing, stabilizers may be
necessary. Additional screws may be used at
section joints for added stability. Guide wires
may be attached to the joint for additional sup-
port on multiple joint configurations.
17