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vENTiNG iNSTALLATioN iNSTRUcTioNS
SNORKEL TERMINATION INSTALLATION
Recommended Applications:
• Installations requiring a vertical rise on building exterior
• Any installation using snorkel termination to achieve one foot above ground
Snorkel terminations are available for installations requiring a vertical rise on the exterior of the building. If installing snorkel termina-
tion below grade, you must provide proper drainage to prevent water from entering snorkel termination (see Figure 16). Do not back fill
around snorkel termination.
Snorkel
Termination
HORIZONTAL SYSTEM INSTALLATION USING TWO 90° ELBOWS
The following configurations show the minimum vertical rise requirements for a horizontal system using two 90° elbows.
Venting with Two 90° Elbows
Vertical (V) Horizontal Horizontal (H
(H
)
1
5' min.
2' max.
6' min.
4' max.
7' min.
6' max.
8' min.
8' max.
20' max.
8' max.
Figure 17 - Horizontal Termination Configuration for Venting
Using Two 90° Elbows
108862-01E
12"
Minimum
Figure 16 - Snorkel Termination Configurations for Below Ground Installation
) +
1
Horizontal (H
)
2
6' max.
12' max.
18' max.
20' max.
20' max.
45° Elbow
Continued
Snorkel
Termination
12"
Minimum
Adequate
Drainage
Venting with Two 90° Elbows
Vertical (V)
5' min.
6' min.
7' min.
8' min.
20' max.
Figure 18 - Horizontal Termination Configuration for Venting
Using Two 90° Elbows with Termination at 90° with Fireplace
www.desatech.com
Wall
Firestop
90° Elbow
45°
Elbow
Horizontal (H
)
1
Horizontal (H
)
45° Elbow
2
6' max.
12' max.
18' max.
20' max.
20' max.
Snorkel Termination
12"
Minimum
11
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