Fig. 21: Direct
|
| Certified | Vent | Min./Max. Vertical | Combustion | Air Inlet | Max. Air | ||
Model | Appliance | Venting Height (feet) | Air Intake | Intake | |||||
No. | Category | Venting | Size |
|
| Pipe | Size | Length | |
|
| Material | (inches) | Min. | Max. | Material | (inches) | (feet) | |
|
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|
|
| |||||
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|
|
|
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|
|
|
| |
HD101 |
|
| 4 | 6 |
|
|
|
| |
HD151 |
|
|
| Galvanized |
|
| |||
|
|
|
|
|
|
| |||
|
| Type B |
|
|
| Steel |
|
| |
HD201 | I |
| (HD201) 6 | 25* | 4 | 100 | |||
| PVC | ||||||||
HD251 | Equivalent | 5 | (HD251) 6 | ||||||
|
| ABS |
|
| |||||
HD301 |
|
|
| (HD301) 11 |
|
|
| ||
|
|
|
| CPVC |
|
| |||
|
|
|
|
|
|
|
| ||
HD401 |
|
| 6 | 8 |
|
|
|
| |
|
|
|
|
|
|
|
|
| |
*Over 25 feet, use single acting barometric damper. Consult the factory for additional information.
Table M: Vertical Venting
30
