TABLE 3 -VENT CONNECTOR LENGTHS
FOR 4” (10.2 cm) DIAMETER PVC
Terminating | # of 90° Elbows | Maximum | Minimum |
| (excluding vent | Length | Length |
| terminal) |
|
|
Through the Wall | 1 | 70 ft (21.3 m) | 2 ft (.6 m) |
Through the Wall | 2 | 65 ft (19.8 m) | 3 ft (.9 m) |
Through the Wall | 3 | 60 ft (18.3 m) | 5 ft (1.5 m) |
Through the Wall | 4 | 55 ft (16.8 m) | 8 ft (2.4 m) |
Through the Wall | 5 | 50 ft (15.3 m) | 12 ft (3.6 m) |
Through the Roof | 1 | 70 ft (21.3 m) | 2 ft (.6 m) |
Through the Roof | 2 | 65 ft (19.8 m) | 3 ft (.9 m) |
Through the Roof | 3 | 60 ft (18.3 m) | 5 ft (1.5 m) |
Through the Roof | 4 | 55 ft (16.8 m) | 8 ft (2.4 m) |
Through the Roof | 5 | 50 ft (15.3 m) | 12 ft (3.6 m) |
NOTE: When using 4” (10.2 cm) PVC, use a 4” (10.1 cm) to 3” (7.6 cm) reducer and exit the building wall with 3” (7.6 cm) PVC using the 3” (7.6 cm) 90° vent terminal supplied. Two 45° elbows are equivalent to one 90° elbow.
Figure 2
IMPORTANT
All of the Venting connections must be leak checked with a soap and water solution upon initial start up of the water heater. Any leaks must be repaired before continuing operation of the water heater.
NOTE: ABS or CPVC pipes may be substituted for PVC pipe. Do not mix
ABS and PVC pipe in the same installation.
Venting (Part I) continued-
13