Quadra-Fire Expression 36 QV36A-FB - Manual (Page 27)

27 Quadra-Fire • Expression 36 (QV36A-FB) • 2062-900 Rev. S • 11/11
SCREWS
CAULK
STORM
COLLAR
(1 of 3)
D. Installing Roof Flashing and Vertical Ter-
mination Cap
For installation of vertical termination cap see minimum
vent heights for various pitched roofs (see Figure 8.14).
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
Over 11/12 to 12/12 ........................... 4.0
Over 12/12 to 14/12 ........................... 5.0
Over 14/12 to 16/12 ........................... 6.0
Over 16/12 to 18/12 ........................... 7.0
Over 18/12 to 20/12 ........................... 7.5
Over 20/12 to 21/12 ........................... 8.0
* 3 foot minimum in snow regions
Figure 8.14 Minimum height from roof to lowest discharge
opening
Fire Risk.
Explosion Risk.
Inspect external vent cap regularly.
• Ensure no debris blocks cap.
• Combustible materials blocking cap may
ignite.
• Restricted air fl ow affects burner operation.
HORIZONTAL
OVERHANG
VERTICAL
WALL
GAS DIRECT VENT
TERMINATION CAP
12
X
ROOF PITCH
IS X/ 12
LOWEST
DISCHARGE
OPENING
2 FT.
MIN.
20 INCHES MIN.
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
Figure 8.15
WARNING
TERMINATION CAP
Figure 8.16
CAULK
NOTICE: Failure to properly caulk the roof fl ashing and
pipe seams may permit entry of water.
Caulk the gap between the roof fl ashing and the outside
diameter of the pipe. Also caulk the perimeter of fl ashing
that contacts roof surface and the overlap seam of any
exposed pipe sections that are located above the roof line
as shown in Figure 8.16.
To attach the vertical termination cap, slide the inner col-
lar of the cap into the inner fl ue of the pipe section and
place the outer collar of the cap over the outer fl ue of the
pipe section.
Secure with three screws into the outer fl ue. Secure the cap
by driving the three self-tapping screws (supplied) through
the pilot holes in the outer collar of the cap into the outer
fl ue of the pipe (see Figure 8.15).