25
Minimum Height (H)
Roof Pitch
Feet
Meters
Flat to 6/12
1.0
0.30
Over 6/12 to 7/12
1.25
0.38
Over 7/12 to 8/12
1.5
0.46
Over 8/12 to 9/12
2.0
0.61
Over 9/12 to 10/12
2.5
0.76
Over 10/12 to 11/12
3.25
0.99
Over 11/12 to 12/12
4.0
1.22
Over 12/12 to 14/12
5.0
1.52
Over 14/12 to 16/12
6.0
1.83
Over 16/12 to 18/12
7.0
2.13
Over 18/12 to 20/12
7.5
2.27
Over 20/12 to 21/12
8.0
2.44
CAUTION
This appliance must not be connected to or joined with any chimney flue serving any other appliance.
Approved Cap
Approved vent pipe
Roof pitch = X/12
Discharge opening
12
X
Minimum
*18 in. (457 mm)
H
H
- Minimum height from roof to lowest discharge opening
*If vent is closer than 18 in. (457 mm), it must terminate at
least 2 ft. (0.61 m) higher than any portion of a building with-
in 10ft. (3.05 m) of the vent.
11.10
Vertical Vent Termination Clearances
Figure 11.11, Vertical Vent Termination Clearances
