Minimum and Maximum Vent Lengths
Charts are for installation from 0 - 2000 ft. elevation ONLY. (Please see supplement sheet for installations above 2000 feet.)
NOTICE: Be sure to mount inlet vent terminal 6 inches higher than the outlet vent terminal. Vent terminals need to be a minimum of 7 inches (center to center) horizontally apart and a maximum of 24 inches apart.
GP100-150 & GP100-200
Venting Information for 3” Vents
Number of 90º Elbows with | Number of | Minimum Pipe | Maximum | ||
Vent Terminal | |||||
Length equired | Pipe Length | ||||
45º Elbows | |||||
Inlet Vent | Outlet Vent | (Ft) | (Ft) | ||
| |||||
|
|
| |||
|
|
|
|
| |
One (1) | One (1) | None | 5.0 | 40.0 | |
|
|
|
|
| |
One (1) | One (1) | One (1) | 2.5 | 37.5 | |
|
|
|
|
| |
Two (2) | Two (2) | None | 5.0 | 35.0 | |
|
|
|
|
| |
Two (2) | Two (2) | One (1) | 2.5 | 32.5 | |
|
|
|
|
| |
Three (3) | Three (3) | None | 5.0 | 30.0 | |
|
|
|
|
| |
Three (3) | Three (3) | One (1) | 2.5 | 27.5 | |
|
|
|
|
| |
Four (4) | Four (4) | None | 5.0 | 25.0 | |
|
|
|
|
| |
Four (4) | Four (4) | One (1) | 2.5 | 22.5 | |
|
|
|
|
| |
Vent lengths for the inlet and the outlet pipes should not have a dif- ference of more than five (5) equivalent feet.
Venting Information for 4” Vents
Number of 90º Elbows with | Number of | Minimum Pipe | Maximum | ||
Vent Terminal | Length Required | Pipe Length | |||
45º Elbows | |||||
Inlet Vent | Outlet Vent | (Ft) | (Ft) | ||
| |||||
One (1) | One (1) | None | 10.0 | 50.0 | |
|
|
|
|
| |
One (1) | One (1) | One (1) | 9.5 | 47.5 | |
|
|
|
|
| |
Two (2) | Two (2) | None | 5.0 | 45.0 | |
|
|
|
|
| |
Two (2) | Two (2) | One (1) | 2.5 | 42.5 | |
|
|
|
|
| |
Three (3) | Three (3) | None | 5.0 | 40.0 | |
|
|
|
|
| |
Three (3) | Three (3) | One (1) | 2.5 | 37.5 | |
|
|
|
|
| |
Four (4) | Four (4) | None | 5.0 | 35.0 | |
|
|
|
|
| |
Four (4) | Four (4) | One (1) | 2.5 | 32.5 | |
|
|
|
|
| |
GP100-250
Venting Information for 4” Vents
Number of 90º Elbows with | Number of | Minimum Pipe | Maximum | ||
Vent Terminal | Length Required | Pipe Length | |||
45º Elbows | |||||
Inlet Vent | Outlet Vent | (Ft) | (Ft) | ||
| |||||
One (1) | One (1) | None | 10.0 | 45.0 | |
|
|
|
|
| |
One (1) | One (1) | One (1) | 7.5 | 42.5 | |
|
|
|
|
| |
Two (2) | Two (2) | None | 5.0 | 40.0 | |
|
|
|
|
| |
Two (2) | Two (2) | One (1) | 2.5 | 37.5 | |
|
|
|
|
| |
Three (3) | Three (3) | None | 5.0 | 35.0 | |
|
|
|
|
| |
Three (3) | Three (3) | One (1) | 2.5 | 32.5 | |
|
|
|
|
| |
Four (4) | Four (4) | None | 5.0 | 30.0 | |
|
|
|
|
| |
Four (4) | Four (4) | One (1) | 2.5 | 27.5 | |
|
|
|
|
| |
Vent lengths for the inlet and the outlet pipes should not have a difference of more than five (5) equivalent feet.
HORIZONTAL VENT TERMINAL LOCATION - The location of the vent terminal depends on the minimum clearances and consider- ations shown in the charts on pages 11 and 12..
Vent lengths for the inlet and the outlet pipes should not have a differ- ence of more than five (5) equivalent feet.
NOTICE: 3” and 4” vent pipe should not be mixed, other than to reduce the 4” vent for the 3” PVC Vent Terminal. This unit is supplied with two (2)
The 4” vent pipe can use up to 16 inches of 3” PVC, preceding the vent terminal. This unit uses the same vent terminals (sup- plied with the unit) for both 3” and 4” pipe. A 4” to 3” reducer will be required to go from 4” to 3” pipe.