Superior SDDV-35 Installation Instructions Manual page 18

VERTICAL VENT FIGURES/TABLES
H +H Maximum
1
feet (meter) feet
5 (1.524) 2
10 (3.048) 4
15 (4.572) 6
20 (6.096) 8
V + V 1 + H + H 1 = 40 feet (12.2 m) Max
H = 8 feet (2.438 meters) Max.
H + H 1 = 20 feet (6.096 meters) Max.
When using Secure Flex, use Firestop / Spacer SF4.5VF
When using Secure Flex, use Firestop / Spacer SF4.5HF
Example: If 20 feet total (H+H
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
maximum total horizontal run of 20 feet.
Figure 29 - Rear Vent - THREE ELBOWS
Table D
H + Maximum
H
1
feet (meter)
5 (1.524)
5 (1.524)
10 (3.048)
15 (4.572)
20 (6.096)
H + H = 20 feet (6.096 m) Max.
1
V + V + H + H = 40 ft. (12.192 m) Max.
1 1
When using Secure Flex, use Firestop / Spacer SF4.5VF
When using Secure Flex, use Firestop / Spacer SF4.5HF
Figure 30 - Top Vent - THREE ELBOWS
18
(CONTINUED)
Table C
H Maximum V Minimum
(meter) feet (meter)
(0.610) 1 (0.305)
(1.219) 2 (0.610)
(1.829) 3 (0.914)
(2.438) 4 (1.219)
) horizontal vent run is needed,
1
) horizontal run up to a
1
Example: If 20 feet total (H+H
horizontal vent run is needed,
V Minimum
then 4 feet minimum of (V) verti-
cal vent will be required.
feet (meter)
This table shows a 1(V) to 5(H)
Elbow Only
ratio. For every 1 foot of (V)
1 (0.305)
vertical run, you are allowed 5
feet of (H) horizontal run up to a
2 (0.610)
maximum (H+H
of 20 feet.
3 (0.914)
4 (1.219) 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.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
H1
Ceiling
Firestop / Spacer
(SV4.5VF)
Wall Firestop/
Spacer (SV4.5HF)
V1
V
)
1
V 1
) horizontal run
1
H 1
Ceiling
Firestop / Spacer
(SV4.5VF)
H
Ceiling
Firestop / Spacer
(SV4.5VF)
Wall Firestop/
Spacer (SV4.5HF)
H
V