Venting Installation instructions
Continued
CORNER AND ALTERNATE INSTALLATION
Recommended Applications:
•Corner ground floor installation
•Ground floor installation where pipe vents horizon- tally through wall (over 12" horizontal pipe)
•Basement installation where one foot clearance from ground to termination is possible
Not to Exceed (H) Limits | 90° Elbow | |
| ||
Square | As Required | |
Termination | ||
for (V), See | ||
| ||
| Chart for | |
| Pipe Section | |
| Required | |
Wall |
| |
Firestop |
|
Not to Exceed
(H)Limits 90° Elbow 
Wall
Firestop
45° Elbow
Square Termination
12" Min.
45° Elbow |
| Required |
|
Vertical (V) | Vertical Pipe | Horizontal (H) |
*43 1/4" min. | None | 30" max. |
54 1/4" min. | 1 ft. | 48" max. |
66 1/4" min. | 2 ft. | 60" max. |
78 1/4" min. | 3 ft. | 84" max. |
90 1/4" min. | 4 ft. | 20' max. |
* Ground Floor Corner Venting
Figure 15 - Horizontal Termination Configuration for Corner Installation Using One
90° Elbow
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 termination 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
| Snorkel Termination | Wall |
|
| Firestop |
Snorkel Termination | 90° Elbow | |
12" |
Min. |
12" Min.
12" Min.
45° Elbow
Adequate
Drainage
Figure 16 - Snorkel Termination Configurations for Below Ground Installation
12 | www.desatech.com |