23
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Installation and Operation Instructions
900300-00, 01/2018
Innovative Hearth Products
DRT35ST and DRT35PF Direct-Vent Gas Fireplaces
J.
Assemble vent run to exterior wall -
If not
previously measured, locate the center of the
vent at the exterior wall. Prepare an opening
as described in
Step B
. Assemble the vent
system to point where the terminus of the last
section is within 7" (178 mm) to 11-1/4" (286
mm) inboard of the exterior surface to which
the SV4.5HT termination is to be attached, see
Figure 36
. If the terminus of the last section
is not within this distance, use the
telescopic
vent section SV4.5LA,
as the last vent section.
For wall thicknesses greater than that shown in
Figure 36
, refer to
Table 8 on Page 24
. This table
lists the additional venting components needed
(in addition to the termination and adaptor) for
a particular range of wall thicknesses.
K.
Attach termination adaptor -
Attach the
adaptor (adaptor - SV4.5RCH - provided with
the termination) to the vent section or telescop-
ing vent section), elbow or appliance collar as
shown in
Figure 35
in the same manner as
any SV4.5 vent component (refer to
Step E
).
L.
Install Firestop/Spacer at exterior wall -
When
using the
square
termination, install SV4.5HF
(Secure Vent
®
), SF4.5HF (Secure Flex
®
) Firestop/
Spacer over the opening at the exterior side of
the framing, long side up, with the 3" spacer
clearance at the top as shown in
Figure 35
, and
nail into place.
(The Firestop/Spacer may also be installed over
the opening at the interior side of the framing.)
M. Install the desired termination -
1. Install the square termination (SV4.5HT-2)-
For the last step , from outside the exterior
wall, slide the collars of the termination onto
the adaptor (the outer over the outer and the
inner inside the inner) until the termination
seats against the exterior wall surface to which
it will be attached. Orient the housing of the
termination with the arrow pointed upwards.
Secure the termination to the exterior wall.
The
horizontal termination must not be recessed
into the exterior wall or siding
by more than
the 1-1/4" (32 mm) as shown in
Figure 36
.
SVHRK Snorkel Cap
–The snorkel cap is
designed to be fitted into a basement window
box. The SVHRK cap is for use with flex vent
The vertical distance between the inlet and outlet
of the cap is 28" (711 mm). pipe.
IMPORTANT: The vent termination is hot
while in operation and for a period of
time following the use of the fireplace.
To prevent contact with hot surfaces,
we recommend the use of a
Termina-
tion Guard
. See
Page 57.
This can be
purchased at your local dealer.
Horizontal terminations have been designed to perform in a wide range of weather
conditions. Our terminations meet or exceed industry standards.
When selecting the locations of your horizontal terminations, do not place the termination
where water from eaves and adjoining rooflines may create a heavy flow of cascading water
onto the termination cap. If the cap must be placed where the possibility of cascading water
exists, it is the responsibility of the builder to direct the water away from the termination
cap by using gutters or other means.
Take care to carefully follow the installation instructions for the termination, including the
use of silicone caulking where required.
Figure 36
* Use silicone caulking to seal the
top and sides of the termination,
up to the underlayment, stucco,
or masonry wall surface.
Venting Connection and Exterior Wall Recessing of the
Horizontal Square Termination (SV4.5HT-2).
Adaptor
SV4.5RCH
**For thicknesses greater than
9-1/4” (235 mm), see
Table 8
.
SV4.5HT-2
Square Termination
Maximum Wall Thickness
9-1/4” (235 mm)**
Exterior Surface of Siding
Exterior Surface of
Framing
6” to 9-1/4”
(152 to 235 mm)**
1-1/4” Maximum Recess of
the Square Termination into
Exterior Finishing Material
SV4.5HT-2
Square Termination
Caulk*
Caulk*
Stucco
Siding
Interior Surface of
Finished Wall
Last Vent Section. Use
Telescopic Vent Section
(SV4.5LA), If Necessary
Maximum Extent of Vent
Run Sections Relative
to Exterior Surface of
Framing
Figure 35 Installing the Square Horizontal Termination (SV4.5HT-2)
Typical
Termination
Shown
7”
(178)
5-1/8”
(130 mm)
12-1/8”
(308 mm)
Note: Centerline of Vent Piping is
NOT the Same as the Centerline of
the Frame Opening.
6” to 48” Vent Section,
Telescopic vent section,
Elbow or Appliance Collar
Base of Appliance
3”
(77 mm)
1”
(26 mm)
Adaptor
SV4.5RCH
10-1/2”
(267 mm)
See
Figures 13 and 14
for the minimum
distance to the base of the fireplace.
To help minimize water infiltration it
is recommended that the Firestop/
Spacer (SV4.5HF) be installed on
the exterior side of the wall.
