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Innovative Hearth Products
Superior
DRT40 Direct Vent Gas Fireplace
TM
F. Change vent direction to horizontal/inclined
run - At transition from or to a horizontal/in-
clined 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 clockwise direction
only so as to avoid the possiblity of unlocking
any of the previously connected vent sections.
See Figure 24.
4-13/16"
(122 mm)
Swivel Joint
Swivel Joint
°
(360
swivel)
°
(360
swivel)
SV4.5E45
SV4.5E90
°
(45
Elbow)
°
(90
Figure 24
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' (1.52 m) along horizontal/inclined vent
runs 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" per foot (20 mm per me-
ter) horizontal, in a direction away from the
fireplace. 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.
Framing Dimensions for Roof
Pitch
0/12
8-1/8"
(206 mm)
6/12
12/12
Elbow)
Figure 25
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.
Figure 26
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 adjust-
ing screw. Apply non-combustible caulking or
mastic around the circumference of the joint
to provide a water tight seal.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
C
D
C
D
10-1/2"
10-1/2"
(267 mm)
(267 mm)
10-1/2"
12"
(267 mm)
(305 mm)
10-1/2"
17-3/4"
(267 mm)
(451 mm)
Installation and Operation Instructions
900357-00, 06/2015
Figure 27
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 ter-
mination section" on Page 6. The SV4.5CGV-1
Vertical Termination (Figure 28) installs 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 engages,
then twist the termination clockwise running the
dimples down and along the incline channels
until they seat at the end of the channels.
Figure 28
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 sup-
port on multiple joint configurations.
Storm
Collar
®
17
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