18
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Installation Instructions
901140-00, 01/2021
Innovative Hearth Products
DRT63ST-B Power-Vent Direct-Vent Fireplace
Figure 18
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 clock-
wise 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
E.
Support the vertical vent run sections.
NOTE:
Proper venting support is very important.
The weight of the vent must not be supported
by the fireplace in any degree.
Support the vertical portion of the venting
system every 8 feet (2.4 m) 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.
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 (see
Figure 19
)
.
F. Change vent direction to horizontal/inclined
run.
At transition from or to a horizontal/inclined
run, install the SV4.5 E45 and SV4.5 E90 elbows
in the same manner as the straight vent sec-
tions. 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 18 and 20
)
.
B.
Attach adaptor (with probe) to appli-
ance collar. Secure Vent
®
SV4.5 direct-vent
system components are unitized concentric
pipe components featuring positive twist lock
connections (
see
Figure 18
)
.
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.
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 21 and 22 on Page 19
.
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 18.
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.
Remember to maintain 1" (26 mm)
clearance to combustibles, framing members,
and attic or ceiling insulation when running
vertical chimney sections. Attic insulation
shield (H3907) is required and may be used to
help maintain the clearances indicated here.
See on
Page 35
. The gap between the vent
pipe and a vertical firestop can be sealed with
non-combustible caulking.
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 18
).
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.
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 3' (914 mm) along horizontal/inclined
vent runs using conventional plumber’s tape
(
see Page 19, Figure 21
)
.
Figure 19
It is important to maintain the required clear-
ances 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.
NOTICE:
It is important to install
horizontal runs on a steady, (i.e., no
“dips”), slightly positive incline of
approximately 1/4" rise-per-foot (20
millimeters rise-per-meter) horizontal,
in a direction away from the fireplace.
(Slightly smaller rise-per-foot run ratios
are acceptable). Use a carpenter’s level
to measure from a constant surface, and
adjust support straps as necessary.
Blocking
Support Straps
(plumber’s tape)
Max.
8 ft (2.4 m)
Min. 0" (0 mm)
clearance
to spacers
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 17
)
.
Figure 17 - Ceiling Opening Framing
Min. 10-1/2"
(267 mm)
Ceiling
Framing
Plumb Bob
Min. 10-1/2"
(267 mm)
7-5/8”
(194 mm)
4-13/16
(122 mm)
Swivel Joint
(360° swivel)
SV4.5E45
45° Elbow)
Swivel Joint
(360° swivel)
SV4.5E90
90° Elbow)
(206 mm)
8-1/8"
Figure 20
