D. Disassemble Vent Sections
•Rotate either section (see Figure 10.9) so the seams on both pipe sections are aligned as shown in Figure 10.10.
•Pull carefully to separate the pieces of pipe.
24 in. min.
(610 mm)
Termination
Cap
|
|
|
| Horizontal | |
| 20 in. |
|
| overhang | |
|
|
| |||
|
|
|
| ||
|
|
| |||
(508 mm) | Vertical | ||||
Lowest | |||||
wall | |||||
Discharge |
| ||||
Opening |
| ||||
Figure 10.9 Rotate Seams for Disassembly
Figure 10.10 Align and Disassemble Vent Sections
E. Install Metal Roof Flashing
•See minimum vent heights for various pitched roofs (Figure 10.11) to determine the length of pipe to extend through the roof.
•Slide the roof flashing over the pipe sections extending through the roof as shown in Figure 10.12.
Storm Collar | X | |
12 | ||
| ||
Roof |
| |
Flashing | Roof Pitch | |
| is X / 12 | |
| H (min.) - Minimum height | |
| from roof to lowest | |
| discharge opening. |
Roof Pitch | H (Min.) Ft. | Roof Pitch | H (Min.) Ft. | ||
Flat to 6/12 |
| 1.0* | Over 11/12 to 12/12 | 4.0 | |
Over 6/12 to 7/12 | 1.25* | Over 12/12 to 14/12 | 5.0 | ||
Over 7/12 to 8/12 | 1.5* | Over 14/12 to 16/12 | 6.0 | ||
Over 8/12 to 9/12 | 2.0* | Over 16/12 to 18/12 | 7.0 | ||
Over 9/12 to 10/12 | 2.5 | Over 18/12 to 20/12 | 7.5 | ||
Over 10/12 to 11/12 | 3.25 | Over 20/12 to 21/12 | 8.0 | ||
| * 3 ft. minimum in snow regions |
|
| ||
Figure 10.11 Minimum Height From Roof To Lowest Discharge Opening
NOTICE: Failure to properly caulk the roof flashing and pipe seams may permit entry of water.
•Caulk the gap between the roof flashing and the outside diameter of the pipe.
•Caulk the perimeter of the flashing where it contacts the roof surface. See Figure 10.15.
•Caulk the overlap seam of any exposed pipe sections that are located above the roof line.
CAULK
Figure 10.12 Caulking
Heat & Glo • LUX60 • | 37 |
