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14 in. Min.
Figure 23: Roof Penetration
E. Support the vertical vent run sections—
Note: Proper venting support is very important.
Support the vertical portion of the venting
system every 8 ft (2.4m) above the fireplace
vent outlet. One method of support is
by utilizing field provided support straps
(conventional plumber's tape). Secure the
plumber's tape to the framing members
with nails or screws. Loop the tape around
the vent, securing the ends of the tape to
the framing. If desired, sheet metal screws
#6 x 1/2 in. length may be used to secure
the support straps to the vent pipe. See
Figure 24.
f i r e - p a r t s . c o m
Figure 24: Supporting Vent Sections
F. Change vent direction to horizontal/
inclined run—At transition from or to a
horizontal/inclined run, install the SV4.5E45
and SV4.5E90 elbows in the same manner as
the straight vent sections. The elbows feature
a twist section to allow them to be routed
about the center axis of their initial collar
section to align with the required direction of
the next vent run element.
4-13/16"
(122 mm)
Swivel Joint
°
(360
swivel)
(360
SV4.5E45
°
(45
Elbow)
Figure 25: Elbow Sections
16
SUPERIOR
• DIRECT-VENT GAS FIREPLACES (SDV35-N-2) • INSTALLATION INSTRUCTIONS
®
Twist elbow sections in a clockwise
direction only so as to avoid the possiblity
Outer Pipe Of
of unlocking any of the previously
Chimney
connected vent sections. See Figure 25.
G. Continue installation of horizontal/
Use correct firestop
inclined sections—Continue with the
thimble depending on the
pitch of the interior
installation of the straight vent sections
ceiling.
in horizontal/inclined run as described in
Note: Regular Thimble
(SV-FSTFE) Can Be Used
Step C. Install support straps every 5 ft
If A Header Is Constructed
(1.52 m) along horizontal/inclined vent runs
At This Point
using conventional plumber's tape. It is very
important that the horizontal/inclined run be
maintained in a straight (no dips), slightly
elevated plane. The recommended incline
is approximately 1/4 in. per foot (20 mm per
meter) horizontal, in a direction away from
the fireplace. The rise per foot run ratios that
are smaller are acceptable all the way down
to at or near level. 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
clearances to combustibles: 1 in. (25 mm)
at all sides for all vertical runs; and 3 in.
(76 mm) at the top, 1 in. (25 mm) at sides,
and 1 in. (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 26.
Blocking
Support Straps
(Plumber's tape)
8 ft (2.4 m)
Maximum
1/2 in. (12.7 mm)
minimum
clearance to
combustibles
Figure 26: Framing Dimensions
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) (Figure 25 ).
8-1/8"
Nail along perimeter to secure flashing or
(206 mm)
adjust roofing to overlap the flashing edges at
top and sides only and trim where necessary.
Swivel Joint
Seal the top and both sides of the flashing
°
swivel)
with waterproof caulking.
SV4.5E90
°
(90
Elbow)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
C
D
Framing Dimensions for Roof
Pitch
C
D
0/12
10 1/2 in.
10 1/2 in.
(267 mm)
(267 mm)
6/12
10 1/2 in.
12 in.
(267 mm)
(305 mm)
12/12
10 1/2 in.
17 3/4 in.
(267 mm)
(451 mm)
J. Install the storm collar—Install the storm
collar, supplied with the flashing, over the
vent/flashing joint. See Figure 27. 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.K.
Figure 27: Storm Collar
Install the vertical termination—The final
step involves installation of the SV4.5CGV-1
Vertical Termination. Extend the vent sec-
tions to the height as shown in the "Vertical
vent termination section" on Page 5. The
SV4.5CGV-1 Vertical Termination (Figure 28)
Figure 28: Vertical Termination
installs in the exact same fashion as any
other Secure Vent
section. Align the termi-
®
nation 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
termination down until it fully engages, then
twist the termination clockwise running the
dimples down and along the incline channels
until they seat at the end of the channels.
If the vent system extends more than 5 ft
(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.
Storm
Collar
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