12
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
C
D
Storm
Collar
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)
Figure 25
Figure 26
Figure 28
Figure 27
If the vent system extends more than 5' (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
support on multiple joint configurations.
G.
Continue installation of horizontal/inclined
sections -
Continue with the installation of the
straight vent sections in horizontal/inclined
run as described in
Step C.
Install support
straps every 5 ft. (1.52 m) along horizontal/
inclined vent runs using conventional plumber’s
tape.
See page 15, Figure 34.
It is very
important that the horizontal/inclined run be
maintained in a straight (no dips) and slightly
elevated plane in a direction away from the
fireplace
¹⁄₄
" per foot (20 mm per meter) of
horizontal vent. Use a carpenter’s level to
measure from a constant surface and adjust
the support straps as necessary.
SV4.5E90
(90° Elbow)
8
¹⁄₈
"
(206 mm)
Swivel Joint
(360
°
swivel)
4
¹³⁄₁₆
"
(122 mm)
SV4.5E45
(45° Elbow)
Swivel Joint
(360
°
swivel)
Figure 24
F.
Change vent direction to horizontal/in-
clined run -
At transition from or to a horizon-
tal/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.
Twist elbow sections in a clock-
wise direction only so as to avoid the possiblity
of unlocking any of the previously connected
vent sections.
See
Figure 24
.
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.
Figure 23
E.
Support the vertical vent run sections -
Note -
Proper venting support is very impor-
tant. The weight of the vent must not be sup-
ported by the firplace in any degree.
Support the vertical portion of the venting
system every 8 feet (2.4m) above the fireplace
vent outlet. One method of support is by utiliz-
ing 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. The tape must
not be secured directly with a fastener into the
vent pipe. See
Figure 23
.
1 inch (25.4 mm)
minimum
clearance to
combustibles
8 feet (2.4 m)
Maximum
Blocking
Support
Straps
(Plumbers
tape)
Note:
Secure vent with fasteners at framing.
Do not secure plumbers tape with a fastener
directly into the vent pipe.
K. Install the vertical termination -
The final
step involves installation of the SV4.5VTR Ver-
tical Termination. Extend the vent sections to
the height as shown in the "Vertical vent termi-
nation section" on
page 4
. The SV4.5VTR Ver-
tical Termination
(Figure 28)
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 termination down until it fully en-
gages, then twist the termination clockwise
running the dimples down and along the incline
channels until they are seated at the end of the
channels.
I.
Install the roof flashing -
Extend the vent
sections through the roof structure. Install the
roof flashing over the vent section and posi-
tion such that the vent column rises vertically
(use carpenters level) (
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.
H.
Frame roof opening -
Identify location for
vent at the roof. Cut and/or frame opening per
Roof Framing Chart and
Figure 25
.
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 pro-
vide a water tight seal.
f i r e - p a r t s . c o m
