D. Vent Diagrams
WARNING
Fire Risk. Explosion Risk.
Do NOT pack insulation or other combustibles between ceiling firestops.
• ALWAYS maintain specified clearances around venting and firestop systems.
• Install wall shield and ceiling firestops as specified.
Failure to keep insulation or other material away from vent pipe may cause fire.
1. Top Vent - Horizontal Termination |
| V1 Minimum | H1 | Maximum | ||||
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One Elbow |
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| 152 mm | 2 ft |
| 610 mm | ||
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| 1 ft | 305 mm | 2 ft |
| 610 mm | ||
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| 2 ft | 610 mm | 5 ft |
| 1.5 m | |
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| 3 ft | 914 mm | 8 ft |
| 2.4 m | |
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| 4 ft | 1.2 m | 11 ft | 3.4 m | ||
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| 5 ft | 1.5 m | 14 ft | 4.3 m | ||
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| 6 ft | 1.8 m | 17 ft | 5.2 m | ||
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| V1 | 7 ft | 2.1 m | 20 ft | 6.1 m | ||
| H1 |
| 8 ft | 2.4 m | 23 ft | 7.0 m | ||
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| V1 | = 40 ft (12.2m) Maximum | |||||
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| H1 | = 23 ft (7.0 m) Maximum | ||||
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| V1 + H1 = 63 ft (19.2m) Maximum | |||||
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| NOTE: Must have | Minimal Vertical Vent | |||||
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| a minimum verti- | ||||||
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| cal vent before at- | Model |
| ft. | mm | ||
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| taching a 90o el- | 152 | |||||
Figure 5.3 |
| bow to the unit. | 1 | 305 | ||||
| See chart. |
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Two Elbows |
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| V1 Minimum | H1 + H1Maximum | ||||
| 0.5 ft | 152 mm | 2 ft | 610 mm | ||||
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| 1 ft | 305 mm | 2 ft | 610 mm | ||
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| 2 ft | 610 mm | 5 ft | 1.5 m | ||
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| 3 ft | 914 mm | 8 ft | 2.4 m | ||
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| 4 ft | 1.2 m | 11 ft | 3.4 m | ||
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| 5 ft | 1.5 m | 14 ft | 4.3 m | ||
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| 6 ft | 1.8 m | 17 ft | 5.2 m | ||
H2 |
| V1 | 7 ft | 2.1 m | 20 ft | 6.1 m | ||
H1 | 8 ft | 2.4 m | 23 ft | 7.0 m | ||||
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| V1 + H1 + H2= 63 ft (19.2 m) Maximum | ||||||
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| H1 + H2 = 23 ft (7.0 m) Maximum | |||||
| INSTALLED | NOTE: Must have |
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| HORIZONTALLY | Minimal Vertical Vent | ||||||
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| a minimum verti- | ||||||
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| cal vent before at- | Model |
| ft. | mm | ||
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| taching a 90o el- | 0.5 | 152 | ||||
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| bow to the unit. | 1 | 305 | ||||
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| See chart. |
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Figure 5.4 |
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Heat & Glo • | 15 |