16
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Figure 12 - Framing Ceiling Opening
A.
Frame ceiling opening -
Use a plumb line
from the ceiling above the appliance to locate
center of the vertical run. Cut and/or frame
an opening, 10-1/2" x 10-1/2" (267 mm x 267
mm) inside dimensions, about this center mark
(
Figure 12
)
.
Figure 13 - Attaching the Vent Adaptor
Align the dimple (four places) of the
upper vent section with the opening
of the locking incline channel on
the lower vent section or appliance
collar. Twist vent component
clockwise to engage and seal until
arrow and dimple align.
Dimple
Locking Incline
Channel
Connected Vent
Sections
Arrow
Arrow
Adaptor on Appliance Collar
or Vent Section
B.
Attach adaptor (with probe) to appliance
collar -
Secure Vent
®
SV4.5 direct-vent sys-
tem components are unitized concentric pipe
components featuring positive twist lock con-
nections (see
Figure 13
).
All of the appliances covered in this document
are fitted with collars having locking inclined
channels. The dimpled end of the adaptor fits
over the appliance collar to create the positive
twist lock connection.
10-1/2" min.
(267 mm)
Ceiling Framing
Plumb Bob
10-1/2" min.
(267 mm)
To attach a vent component to the adaptor on
appliance collar, align the dimpled end over the
adaptor collar, adjusting the radial alignment
until the four locking dimples are aligned with the
inlet of the four inclined channels on the collar
(refer to
Figure 13
). Push the vent component
against the collar until it fully engages, then twist
the component clockwise, running the dimples
down and along the incline channels until they
seat at the end of the channels.
E.
Support the vertical vent run sections -
Support the vertical portion of the venting
system every eight feet (2.4 m) 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.
Strap the tape around the vent,
securing the ends of the tape to the framing.
If desired, sheet metal screws #6 x 1/2" length
may be used to secure the support straps to
the vent pipe.
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 possibility of unlocking
any of the previously connected vent sections
(see
Figures 13 and 15)
.
The unitized design of the Secure Vent
®
com-
ponents will engage and seal both the inner and
outer pipe without the need for sealant or screws.
If desired a #6 x 1/2" screw may be used at the
joint, but it is not required as the pipe will securely
lock when twisted.
C. Attach vent components to each other -
Other
vent sections may be added to the previously
installed section in accordance with the require-
ments shown in
Figures 16 and 17 on Page 17
.
To add another vent component to a length of
vent run, align the dimpled end over the inclined
channel end of the previously installed section,
adjusting the radial alignment until the four
locking dimples are aligned with the inlets of
the four incline channels of the previous section.
Push the vent component against the previ-
ous section until it fully engages, then twist
the component clockwise running the dimples
down and along the incline channels until they
seat at the end of the channels.
This seating
position is indicated by the alignment of the
arrow and dimple as shown in
Figure 13.
D.
Install firestop/spacer at ceiling -
When
using Secure Vent, use SV4.5VF firestop/spacer
at ceiling joists. If there is living space above
the ceiling level, the firestop/spacer must be
installed on the bottom side of the ceiling. If
attic space is above the ceiling, the firestop/
spacer must be installed on the top side of
the joist. Route the vent sections through the
framed opening and secure the firestop/spacer
with 8d nails or other appropriate fasteners at
each corner.
A firestop spacer is required.
Maintain 1" (26 mm) clearance to combus-
tibles, framing members, and attic or ceiling
insulation when running vertical chimney
sections. Attic insulation shield (H3907) may
be used to obtain the required clearances
indicated here. See installation accessories
on
Page 30
. The gap between the vent pipe
and a vertical firestop may be sealed with
noncombustible caulking.
8-1/8”
(206 mm)
4-13/16”
(122 mm)
Swivel Joint
(360° swivel)
SV4.5E45
45° Elbow)
Swivel Joint
(360° swivel)
SV4.5E90
90° Elbow)
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 three feet (914 mm) along horizontal/
inclined vent runs using conventional plumber’s
tape (
Figure 16
on
Page 17
).
NOTE: Maintain the horizontal/inclined run in
a straight, slightly elevated plane - approxi-
mately 1/4" per foot (20 mm per meter) - in
a direction away from the fireplace. Smaller
rise per foot run ratios are acceptable, down
to at or near level. Use a carpenter’s level to
measure from a constant surface and adjust
the support straps as necessary.
NOTE: Maintain the required clearances to
combustibles: 1" (26 mm) at all sides for all
vertical runs; and 3" (77 mm) at the top, 1" (26
mm) at sides, and 1" (26 mm) at the bottom
for all horizontal/inclined runs.
NOTE: Attic insulation shield (H3907, see
Page 30) must be installed when blown
or loose-fill insulation is used, and is
required for all attic installations.
Blocking
Support Straps
(Plumber's
tape)
8' (2.4 m)
Maximum
1/2" (13 mm)
minimum
clearance to
combustibles
Figure 14 - Supporting Vertical Vents
Figure 15 - Vent Elbow Sections
INNOVATIVE HEARTH PRODUCTS • POWER VENT DV GAS FIREPLACES (DRC/DRT6340TYN AND DRC/DRT6345TYN) • INSTALLATION INSTRUCTIONS
