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Intrepid® Direct Vent - Rear Vent Gas Heater
Round Ceil-
ing Support /
Wall thimble
Figure 20
Pipe Section
Rear Vent
Use components listed on page 14 under 'Basic Straight
ST975
through-the-Wall Installation' for an installation where the
heater is parallel to the wall and the vent system extends
simpson
straight back through that wall.
straight up
8/07
1. Locate the vent opening on the wall. Refer to Figures
20 & 21 to determine the top of the opening centerline.
It may be necessary to first position the stove and mea-
sure to find the hole location. Depending on whether the
wall is made of combustible materials, cut the opening to
the size shown in Figure 21. Combustible wall openings
must be framed as shown in Figure 21.
2. Measure the wall thickness and cut the zero clearance
sleeve sections to proper length (MAXIMUM 12").
Assemble the sleeve with the #8 sheet metal screws
supplied. Attach the firestop plate to the sleeve end with
the holes. (Fig. 22) NOTE: The zero clearance sleeve
is required in combustible walls only.
16
Vertical High
Wind Termination
Cap (shown)
Storm Collar
Roof
Flashing
Ceiling Firestop
Cathedral
Ceiling Support
Box
90°Elbow
ST975
Vent Opening - Combustible Wall
10"
(254 mm)
10"
(254 mm)
Vent Opening - Noncombustible Wall
7¹⁄₂" Dia.
(190 mm)
Fig. 21 Locate vent opening. NOTE: Zero clearance sleeve
is required for combustible wall installations.
3. Install the Wall Firestop/Sleeve assembly into the wall
cutout and fasten the firestop to the wall cutout framing
members. (Fig. 23)
VO584-100a
10" x 10" (254 x 254 mm)
Vent Opening
Wall Opening
Zero Clear-
7/07 djt
ance Sleeve
- Seal Around
18¹⁄₄"
(464 mm)
to
Center of
Opening
Seal Around
Terminal
ST950
Fig. 22 Intrepid minimum horizontal rear vent installation.
12"
(305mm)
Max. Length
ST950
install pipe thru wall
7/07
Fig. 23 Assemble the wall sleeve and firestop.
ZCS103
Zero Clearance Sleeve
& Firestop
12/6/99 djt
Framing Detail
VO584-100b
Firestop
Wall Plate
All Components Must
Remain Concentric
Sleeve
#8 Sheet Metal
Screws
Firestop
ZCS103
20306761
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