6
Use the venting option charts to calculate vertical rises for horizontal runs between 3 and 20 feet.
When calculating maximum run lengths, include 10 feet for each 90° elbow or 5 feet for each 45° elbow. (DO NOT INCLUDE THE FIRST ELBOW DIRECTLY OFF THE UNIT.)
VENTING OPTION #1
Use this chart to calculate vertical rise for horizontal run between 1 foot (maximum length when the vertical rise is at its minimum of 1 foot) and 8 feet.
FIGURES 5
VERTICAL
RISE in feet
8 FT MAX (1 FT MAX)
HORIZONTAL VENT RUN
in feet
40 FT MAX
1 FT MIN
VENTING OPTION #2
Use this chart to calculate vertical rise for horizontal run between 3 feet (maximum length when the vertical rise is at its minimum of 1 foot) and 20 feet.
| 20 FT MAX |
| (3 FT MAX) |
| FIGURES 6 |
| 20 FT MAX |
VERTICAL | 1 FT MIN |
RISE in feet |
|
HORIZONTAL VENT RUN | When venting, the horizontal run must be kept to a |
in feet | minimum of 10 inches or a maximum of 20 feet. |
