Disassemble Vent Sections; Install Metal Roof Flashing - Heat & Glo ST-550TM-IPI Owner's Manual

D. Disassemble Vent Sections
• Rotate either section (see Figure 10.7) so the seams on
both pipe sections are aligned as shown in Figure 10.8.
• Pull carefully to separate the pieces of pipe.
Figure 10.7 Rotate Seams for Disassembly
Figure 10.8 Align and Disassemble Vent Sections
36 Heat & Glo • ST-550TM-IPI • 2142-900 Rev. S • 3/20
E. Install Metal Roof Flashing
• See minimum vent heights for various pitched roofs
(Figure 10.9) 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 10.10.
Note: When installing a silicone or EPDM pipe flashing
boot on a metal roof, it is recommended to put a bead of
100% silicone sealant where the boot contacts the vent pipe
to prevent the entry of water. Follow the manufacturer's
recommendations when installing the boot. Climate regions
with frequent temperatures below - 50 °F (-45.6 °C) should
use a silicone flashing boot.
2 FT.
20 INCHES MIN.
MIN.
DISCHARGE
GAS DIRECT VENT
TERMINATION CAP
Roof Pitch
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 10.9 Minimum Height From Roof To Lowest Discharge
Opening
HORIZONTAL
OVERHANG
VERTICAL
WALL
LOWEST
OPENING
X
12
ROOF PITCH
IS X/ 12
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
H (Min.) Ft.
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