Terminating | # of 90° Elbows | Maximum | Minimum |
| (excluding vent | Length | Length |
| terminal) |
|
|
Through the Wall | 0 | 105 ft (32.0 m) | 10 ft (3.1 m) |
Through the Wall | 1 | 100 ft (30.5 m) | 10 ft (3.1 m) |
Through the Wall | 2 | 95 ft (29.0 m) | 10 ft (3.1 m) |
Through the Wall | 3 | 90 ft (27.5 m) | 10 ft (3.1 m) |
Through the Wall | 4 | 85 ft (26.0 m) | 10 ft (3.1 m) |
Through the Wall | 5 | 80 ft (24.4 m) | 10 ft (3.1 m) |
Through the Roof | 0 | 55 ft (16.8 m) | 5 ft (1.5 m) |
Through the Roof | 1 | 50 ft (15.3 m) | 5 ft (1.5 m) |
Through the Roof | 2 | 45 ft (13.7 m) | 5 ft (1.5 m) |
Through the Roof | 3 | 40 ft (12.2 m) | 5 ft (1.5 m) |
Through the Roof | 4 | 35 ft (10.7 m) | 5 ft (1.5 m) |
NOTE: When using 3” (7.6 cm) PVC, use a 3” (7.6 cm) to 2” (5.1 cm) reducer and exit the building wall with 2” (5.1 cm) PVC using the 2” (5.1 cm) 45° vent terminal supplied. Two 45° elbows are equivalent to one 90° elbow. Each 90° elbow is equivalent to 5 feet (1.5 m) of straight vent pipe.
Figure 6
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 II) continued-
19