Install Metal Roof Flashing - Heatilator CNXT4236IT Owner's Manual

G. Install Metal Roof Flashing
Note: Skip to Section I if using the RF4-8.
• See minimum vent heights for various pitched roofs
(Figure 10.15) to determine the length of pipe to extend
through the roof.
• Slide the roof fl ashing over the pipe sections extending
through the roof as shown in Figure 10.16.
24 in. min.
(508 mm)
(610 mm)
Lowest
Discharge
Opening
Termination
Cap
Storm Collar
Roof
Flashing
Roof Pitch H (Min.) Ft.
Flat to 6/12 1.0*
Over 6/12 to 7/12 1.25*
Over 7/12 to 8/12 1.5*
Over 8/12 to 9/12 2.0*
Over 9/12 to 10/12 2.5
Over 10/12 to 11/12 3.25
* 3 ft. minimum in snow regions
Figure 10.15 Minimum Height From Roof To Lowest Discharge
Opening
46
Horizontal
overhang
20 in.
Vertical
wall
X
12
Roof Pitch
is X / 12
H (min.) - Minimum height
from roof to lowest
discharge opening.
Roof Pitch H (Min.) Ft.
Over 11/12 to 12/12
Over 12/12 to 14/12
Over 14/12 to 16/12
Over 16/12 to 18/12
Over 18/12 to 20/12
Over 20/12 to 21/12
Heatilator • Caliber CNXT Series • 4047-132 Rev T • 09/08
NOTICE: Failure to properly caulk the roof fl ashing could
cause water entry.
• Caulk the gap between the roof fl ashing and the outside
diameter of the pipe.
• Caulk the perimeter of the fl ashing where it contacts the
roof surface. See Figure 10.16.
Figure 10.16
4.0
5.0
6.0
7.0
7.5
8.0
Pipe
Caulk
Flashing