16 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
See Horizontal Vent-
ing Figures and Tables
for Use Restrictions
SV4.5HTR Horizontal
Round Termination
*Firestop/Spacer (SV4.5HF)
shown on the exterior side of the
wall. It may also be installed on
the interior side. SV4.5 HTS
Termination
Shown.
10¹⁄₂"
(267mm)
7"
(178)
5¹⁄₈"
(130 mm)
12¹⁄₈"
(308 mm)
Note: Centerline of Vent Piping is
NOT the Same as the Centerline of
the Framed Opening.
6 to 48 inch Vent Section,
Telescopic vent section,
Elbow or Appliance Collar
See Figure 9 on page 7
for Min. Distance to Base
of Appliance.
Base of Appliance
3"
(76 mm)
1"
(25.4 mm)
*Firestop/Spacer integral with
round termination (SV4.5HTR)
See Venting Figures for Use Restrictions on the
Small Square Horizontal Termination
(SV4.5HTSS) and the Horizontal Round
Termination (SV4.5HTR).
Adapter
SV4.5RCH
Figure 33Figure 34Figure 35
Siding
Stucco *1¹⁄₄" Maximum Recess of
Either Square Termination into
Exterior Finishing Material
Exterior Surface of
Framing
5 in. to 9 ¹₄ in.
(127 to 235 mm)

*Note - The SV4.5HTR Horizontal Round Termination may NOT be recessed at all.

Exterior Surface of Siding
Minimum wall thickness
5 in. (127 mm)
Interior Surface of
Finished Wall
Maximum wall thickness
9¹₄ in.(235 mm)
SV4.5HTS
Square Termination
shown
Maximum Extent of
Vent Run Sections
Relative to Exterior
Surface of Framing
Last Vent Section. Use
Telescopic Vent
Section (SV4.5LA), If
Necessary
Adapter
SV4.5RCH
SV4.5HTS
Square Termination
Shown

Venting Connection and Exterior Wall Recessing of the Horizontal Square Termination

(SV4.5HTS),Small Square Termination (SV4.5HTSS) or Round Termination ((SV4.5HTR).

See Venting Figures for Use Restrictions on the Small Square
Horizontal Termination (SV4.5HTSS) and the Horizontal Round
Termination (SV4.5HTR).
M. Install the desired termination -

See the horizontal venting figures for appli-

cation restrictions on the round termination

(SV4.5HTR) and the small square horizontal

termination (SV4.5HTSS).

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

34

, refer to
table 3 on page 17
. This table lists
the additional venting components needed (in
addition to the termination and adapter) for a
particular range of wall thicknesses.
K. Attach termination adapter - Attach the
adapter (adapter - SV4.5RCH - provided with
the termination) to the vent section or tele-
scoping vent section), elbow or appliance col-
lar as shown in

Figure 33

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 inch
spacer clearance at the top as shown in
Figure

34

, and nail into place. (The Firestop/Spacer
may also be installed over the opening at the
interior side of the framing.) When using the
round termination, a separate firestop/spacer
is not required since this termination has inte-
gral spacers which provide the same function
as a separate firestop/spacer.
2. Install the round termination (SV4.5HTR)
–See

Figure 35

for an illustration of the round
termination. For the last step, from outside the
exterior wall, slide the collars of the termination
onto the adapter (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.
1. Install the square termination (SV4.5HTS)
or (SV4.5HTSS)- For the last step , from outside
the exterior wall, slide the collars of the termina-
tion onto the adapter (the outer over the outer
and the inner inside the inner) until the termina-
tion 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 34

.
Installing the Square Horizontal Termination (SV4.5HTS), Small Square
Horizontal Termination (SV4.5HTSS) or Round Horizontal Termination
(SV4.5HTR).
The SV4.5HTR Round Termination may not
be used when the appliance is vented di-
rectly out the wall from the rear (as shown in

Figures 36 or 37

on page 17). Do Not recess
the SV4.5HTR round termination at all.
SFHRK Snorkel Cap –The snorkel cap is de-
signed to be fitted into a basement window
box. The SFHRK cap is for use with flex vent
pipe. The vertical distance between the inlet
and outlet of the cap is 28 in. (711 mm).