Maximum Vent
Length Table
VENT LENGTH TABLE
ALTITUDE | MAXIMUM TOTAL EQUIVALENT LENGTH IN FEET | ||||
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| FOR VENT AND INLET AIR (SEE NOTES) |
| ||
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|
2 INCH PIPE |
| 2.5 INCH PIPE |
| 3 or 4 INCH PIPE | |
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|
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|
|
|
*UH/DH2B060A9V3VA | 200 |
| 200 |
| 200 |
|
|
|
|
|
|
*UH/DH2B080A9V3VA | 50 |
| 120 |
| 200 |
*UH/DH2B080A9V4VA |
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|
|
|
| |
|
|
|
|
|
|
*UH/DH2C100A9V4VA | Not Allowed |
| 60 |
| 200 |
*UH2C100A9V5VA |
|
| |||
|
|
|
|
| |
|
|
|
|
|
|
*UH/DH2D120A9V5VA | Not Allowed |
| Not Allowed |
| 200 |
|
|
|
|
|
|
2 INCH PIPE |
| 2.5 INCH PIPE |
| 3 or 4 INCH PIPE | |
|
|
|
|
|
|
*UH/DH2B060A9V3VA | 100 |
| 100 |
| 100 |
|
|
|
|
|
|
*UH/DH2B080A9V3VA | 25 |
| 60 |
| 100 |
*UH/DH2B080A9V4VA |
|
| |||
|
|
|
|
| |
|
|
|
|
|
|
*UH/DH2C100A9V4VA | Not Allowed |
| 30 |
| 100 |
*UH2C100A9V5VA |
|
| |||
|
|
|
|
| |
|
|
|
|
|
|
*UH/DH2D120A9V5VA | Not Allowed |
| Not Allowed |
| 100 |
|
|
|
|
|
|
2 INCH PIPE |
| 2.5 INCH PIPE |
| 3 or 4 INCH PIPE | |
|
|
|
|
|
|
*UH/DH2B060A9V3VA | 50 |
| 50 |
| 50 |
|
|
|
|
|
|
*UH/DH2B080A9V3VA | Not Allowed |
| 30 |
| 50 |
*UH/DH2B080A9V4VA |
|
| |||
|
|
|
|
| |
|
|
|
|
|
|
*UH/DH2C100A9V4VA | Not Allowed |
| Not Allowed |
| 50 |
*UH2C100A9V5VA |
|
| |||
|
|
|
|
| |
|
|
|
|
|
|
*UH/DH2D120A9V5VA | Not Allowed |
| Not Allowed |
| 50 |
|
|
|
|
|
|
NOTES: * - First letter may be "A" or "T"
1. Minimum vent length for all models: 3' horizontal or 3' vertical.
2. DO NOT MIX PIPE DIAMETERS IN THE SAME LENGTH OF PIPE OUTSIDE THE FURNACE CABINET (Except adapt- ers at the top of the furnace). If different inlet and vent pipe sizes are used, the vent pipe must adhere to the maximum length limit shown in the table above (See note 6 below for exception). The inlet pipe can be of a larger diameter, but never smaller than the vent pipe.
3. MAXIMUM PIPE LENGTHS MUST NOT BE EXCEEDED! THE LENGTH SHOWN IS NOT A COMBINED TOTAL, IT IS THE MAXIMUM LENGTH OF EACH (Vent or Inlet air pipes).
4. One SHORT radius 90° elbow is equivalent to 10' of 3" or 4" pipe and one LONG radius elbow is equivalent to 6' of 3" or 4" pipe. One 90° elbow is equivalent to 7½' of 2½" pipe or 5' of 2" pipe. Two 45° elbows equal one 90°elbow.
5. The termination tee or bend must be included in the total number of elbows. If the BAYAIR30AVENTA termination kit is used, the equivalent length of pipe is 5 feet. BAYVENT200B equivalent length is 0 feet.
6. Pipe adapters are field supplied (except for the *UH/DH2D120 models).
7. For Canadian applications ONLY, IPEX 196006 may be used for horizontal and vertical terminations. IPEX 081216, IPEX 081218, and IPEX 081219 may only be used for horizontal vent terminations. Equivalent lengths are IPEX 196009 = 5 feet, IPEX 081216 = 11 feet, IPEX 081218 = 16 feet, and IPEX 081219 = 21 feet
20 | Pub. No. |
