Venting Installation instructions
Continued
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
Snorkel |
Termination |
12" |
Minimum |
Snorkel |
| Wall |
Termination |
| |
| Firestop | |
| 90° Elbow | |
|
|
12"
Minimum 45° Elbow
Adequate
Drainage
12"
Minimum
Figure 16 - Snorkel Termination Configurations for Below Ground Installation
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 (H1) + |
| (H1) | Horizontal (H2) |
5' min. | 2' max. | 6' max. |
6' min. | 4' max. | 12' max. |
7' min. | 6' max. | 18' max. |
8' min. | 8' max. | 20' max. |
20' max. | 8' max. | 20' max. |
45° Elbow
Venting with Two 90° Elbows
Vertical (V) Horizontal (H1) | |
| Horizontal (H2) 45° Elbow |
5' min. | 6' max. |
6' min. | 12' max. |
7' min. | 18' max. |
8' min. | 20' max. |
20' max. | 20' max. |
Figure 18 - Horizontal Termination Configuration for Venting Using Two 90° Elbows with Termination at 90° with Fireplace
Figure 17 - Horizontal Termination Configuration for Venting
Using Two 90° Elbows
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