VENTING INSTALLATION INSTRUCTIONS
Installation Planning (Cont.)
11
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. |
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| Snorkel |
| Snorkel |
| Termination |
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Snorkel | Termination |
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Termination |
| Wall |
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| 90° Elbow | Firestop | 12" |
| 12" |
| Minimum |
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| Minimum |
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| 45° |
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12" | Elbow |
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Minimum | Adequate |
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| Drainage |
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Figure 16 - Snorkel Termination Configurations for Below Ground Installation
HORIZONTAL SYSTEM INSTALLATION USING TWO 90° ELBOWS |
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The following configurations show the minimum vertical rise requirements for a horizontal system using two 90° elbows. | ||||||
Venting with Two 90° Elbows |
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| Horizontal (H | ) + |
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Vertical (V) | Horizontal (H | ) | 1 |
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Horizontal (H |
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| 1 |
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| 2 |
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5' min. | 2' max. |
| 6' max. |
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6' min. | 4' max. |
| 12' max. |
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7' min. | 6' max. |
| 18' max. |
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8' min. | 8' max. |
| 20' max. |
| 45° | Elbow |
20' max. | 8' max. |
| 20' max. |
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Figure 17 - Horizontal Termination Configuration for Venting Using Two 90° Elbows
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