Venting continued-
TABLE 4
3” (7.6 cm) PVC VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Terminating | # of Elbows | Maximum # of |
| (intake + exhaust) | Feet of Straight |
|
| Pipe |
|
| (intake + exhaust) |
(2) 90° Elbows with (1) 90° | 2 | 50 ft (15.2 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 3 | 45 ft (13.7 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 4 | 40 ft (12.2 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 5 | 35 ft (10.7 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 6 | 30 ft (9.1 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 7 | 25 ft (7.6 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 8 | 20 ft (6.1 m) |
Elbow |
|
|
TABLE 5
4” (10.1 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Terminating (Reduce 4” to 3”) | #of Elbows | Maximum # of |
(Reduce 10.1 cm to 7.6 cm) | (intake + exhaust) | Feet of Straight |
|
| Pipe |
|
| (intake + exhaust) |
(2) 90° Elbows with (1) 90° | 2 | 120 ft (36.6 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 3 | 115 ft (35.1 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 4 | 110 ft (33.5 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 5 | 105 ft (32.0 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 6 | 100 ft (30.5 m) |
Elbow |
|
|
(2) 90° Elbows with (1) 90° | 7 | 95 ft (29.0 m) |
Elbow |
|
|
| 19 |
|
