Specifications

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Venting Components Required for Various Exterior
Wall Thicknesses, when using Square Termination Kit
(SV8HTS—see Figure 28)
Vent Components Required Exterior Wall Thickness—inches (mm)
4ERMINATION+IT/NLY TOTO
4ERMINATION+ITAND6ENT
3ECTION36,
TOTO
4ERMINATION +IT AND 4ELE-
SCOPIC3ECTION36,!
TOTO
4ERMINATION +IT AND 4ELE-
SCOPIC3ECTION36,!AND
VENTSECTION36,
TOTO
Table 9
See Table 9 as an aid in venting component selection for a particular
range of exterior wall thicknesses.
Example: If 20 feet of (H)
horizontal vent run is needed,
then 10 feet minimum of (V)
vertical vent will be required.
H
V
Wall Firestop/Spacer
(SV8HF)
Ceiling
Firestop/Spa
cer
(SV8BF)
Table C
H Maximum
V Minimum
feet (meter) feet (meter)
3.5 (1.07) 2.5 (0.762)
6.5 (1.98) 3.5 (1.07)
8.5 (2.6) 4.5 (1.37)
10.5 (3.2) 5.5 (1.68)
12.5 (3.8) 6.5 (1.98)
14.5 (4.4) 7.5 (2.3)
16.5 (5.0) 8.5 (2.6)
18.5 (5.6) 9.5 (2.9)
20 (6.0) 10 (3.0)
V + H = 40 feet (12.4 m) Max.
H = 20 ft. (6.2 m) Max.
HORIZONTAL VENT FIGURES/TABLES
NOTES:
s 3ECURE6ENT
®
components (rigid vent pipe and terminal) are shown
in the figures.
s Two 45º elbows may be used in place of one 90º elbow. The same rise
to run ratios, as shown in the venting figures for 90º elbows, must be
followed if 45º elbows are used.
s SV8BF (Secure Vent) firestop/spacer must be used anytime vent pipe
passes through a combustible floor or ceiling. SV8HF (Secure Vent)
firestop/spacer must be used anytime vent pipe passes through a
combustible wall.
s )TISVERYIMPORTANTTHATTHEHORIZONTALINCLINEDRUNBEMAINTAINED
in a straight (no dips), slightly elevated plane. The recommended
incline is approximately 1/4" per foot (20 mm per meter) horizontal,
in a direction away from the fireplace. The rise per foot run ratios
that are smaller are acceptable all the way down to at or near level.
Figure 29—Top Vent—One 90 Degree Elbow (Elbow Connection Not Directly at Appliance)
See Table 9 as an aid in venting component selection for
APARTICULARRANGEOFEXTERIORWALLTHICKNESSES
Square termination (SV8HTS) shown.