Installation
900285-01 05/2015
Innovative Hearth Products
Astria
TM
Gemini and GeminiCD Series Direct-Vent Gas Fireplaces
32
Figure 26: 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 27: Venting Connection and Exterior Wall Recessing of the Horizontal Termination
Siding
Stucco
1-1/4” Maximum Recess of
the Square Termination into
Exterior Finishing Material
Exterior Surface of
Framing
6 in. to 9 1/4”
(152 to 235 mm)**
Exterior Surface of Siding
Interior Surface of
Finished Wall
Maximum wall thickness
9 1/4” (235 mm)**
Maximum Extent of
Vent Run Sections
Relative to Exterior
Surface of Framing
Last Vent Section. Use
T e l e s c o p i c V e n t
Section (SV4.5LA), If
Necessary
Adapter
SV4.5RCH
*Use silicone caulking to
seal the top and sides of
the termination, up to the
underlayment, stucco, or
masonry wall surface.
*Caulk
*Caulk
SV4.5HT-2
Square Termination
Shown
SV4.5HT-2
Square Termination
Shown
** For thicknesses greater
than 10” (254 mm) see
Table 21.
