Installation
900960-00C, 06/2019
Innovative Hearth Products
DRT3500-C Series Direct-Vent Gas Fireplaces
33
Firestop/Spacer (SV4.5HF) shown
on the exterior side of the wall. It
may also be installed on the
interior side.
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)
*
To help minimize water infiltration
it is recommended that the Fire-
stop/ Spacer (SV4.5HF) be installed
on the exterior side of the wall.
*Recommended IHP termination kit: H1968.
**With termination kit only, 6 to 9-1/4”
**
See
Table 10
for the minimum distance
to the base of the fireplace.
Figure 25B - Installing the Horizontal Termination
NOTE: To help minimize water infiltration install the firestop/spacer (SV4.5HF) on the exterior side of the wall. The
firestop may be caulked with mill base caulk (such as 10K81) or high-temperature silicone.
Figure 26 - Venting Connection and Exterior Wall Recessing of the Horizontal Termination
* Use silicone caulking to
seal the top and sides of the
termination, up to the under-
layment, stucco, or masonry
wall surface.
Adaptor
SV4.5RCH
**For thicknesses greater than
9-1/4" (235mm), see
Table 20
.
SV4.5HT-2
Square Termination
Shown
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
NOTE
: If SV4.5HTSS termination is used (for 35” models only); the Wall Heatshield provided shall be installed
per instructions on
Page 32
(see instruction #12 and
Figure 25A
).
SV4.5HT-2
Square Termination
Shown
*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
Installing the Horizontal
Termination, SV4.5HT-2
(all models) or SV4.5HTSS
(35” models only)
Installing the Horizontal Termination, SV4.5HT-2
(all models) or SV4.5HTSS (35” models only)
