Installing Metal Roof Flashing; Assemble And Install Storm Collar - Heatilator GDST3831I Owner's Manual

F. Installing 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 fl ashing over the pipe sections extending
through the roof as shown in Figure 10.12.
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 10.11 Minimum Height From Roof To Lowest Discharge
Opening
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.
• Caulk the perimeter of the fl ashing where it contacts the
roof surface. See Figure 10.12.
• Caulk the overlap seam of any exposed pipe sections
that are located above the roof line.
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.
Heatilator • GDST3831I • 2127-900 Rev. N • 6/15
Figure 10.12
G. Assemble and Install Storm Collar
CAUTION! Risk of Cuts, Abrasions or Flying Debris.
Wear protective gloves and safety glasses during instal-
lation. Sheet metal edges are sharp.
• Slide the storm collar onto the exposed pipe section
and align brackets.
• Insert a bolt (provided) through the brackets and install
nut. Do not completely tighten.
Figure 10.13 insert Bolt into Brackets Figure 10.13 insert Bolt into Brackets
• Slide the assembled storm collar down the pipe section
until it rests on the roof fl ashing (see Figure 10.13).
• Tighten nut and make sure the collar is tight against the
pipe section.
• Caulk around the top of the storm collar. See Figure 10.14.
CAULK
37