Superior SDDV-35 Installation Instructions Manual page 23

HORIZONTAL VENT FIGURES / TABLES (CONTINUED)
H 2
Square termination
(SV4.5HT-2) shown.
Figure 39
- Rear Vent - THREE 90 DEGREE ELBOWS
H 1
Wall Firestop/Spacer
(SV4.5HF)
Square termination
(SV4.5HT-2) shown.
See Table 12 on Page
21 as an aid in venting
component selection for
a particular range of exte-
rior wall thicknesses.
Figure 40
- Top Vent - THREE 90 DEGREE ELBOWS
Wall Firestop/Spacer
(SV4.5HF)
H 1
Ceiling
Firestop/Spacer
(SV4.5VF)
V
Firestop/Spacer
V 1
Wall Firestop/Spacer
(SV4.5HF)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
H Maximum
+ H + H
1 2
feet (meter)
5 (1.524)
10 (3.048)
15 (4.572)
20 (6.096)
V + H + H 1 + H 2 = 40 feet (12.2 m) Max
H + H 1 + H 2 = 20 feet (6.096 meters) Max.
H
Ceiling
(SV4.5VF)
H
V
Table K
H Maximum
feet (meter) feet
2 (0.610) 1
4 (1.219) 2
6 (1.829) 3
8 (2.438) 4
H = 8 feet (2.438 meters) Max.
Example: If 20 feet total (H+H +H
1
run is needed, then 4 feet minimum of (V) vertical
vent will be required.
This table shows a 1(V) to 5(H) ratio. For every
1 foot of (V) vertical, you are allowed 5 feet of
horizontal run up to a maximum total (H+H
horizontal run of 20 feet.
See Table 12 on Page 21 as an aid in venting
component selection for a particular range of
exterior wall thicknesses.
Table L
H + H Maximum
1
feet (meter) feet
5 (1.524)
5 (1.524) 1
10 (3.048) 2
15 (4.572) 3
20 (6.096) 4
H + H = 20 feet (6.096 m) Max.
1
V H
+ V + + H = 40 ft. (12.192 m) Max.
1 1
Example: If 20 feet total (H+H
vent run is needed, then 4 feet minimum of
(V) vertical vent will be required.
This table shows a 1(V) to 5(H) ratio. For every
1 foot of (V) vertical, you are allowed 5 feet
of (H+ H ) horizontal run, up to a maximum
1
horizontal run of 20 feet.
An elbow is acceptable as 1 foot of vertical
rise except where an elbow is the only vertical
component in the system. See Figure 35.
V Minimum
(meter)
(0.305)
(0.610)
(0.914)
(1.219)
) horizontal vent
2
+H )
1 2
V Minimum
(meter)
Elbow Only
(0.305)
(0.610)
(0.914)
(1.219)
) horizontal
1
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