Heatiator NNXT3933IL, NNXT4236I Install Metal Roof Flashing, Assemble and Install Storm Collar

G. Install Metal Roof Flashing

•See minimum vent heights for various pitched roofs (Figure 10.14) 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 10.15.

H. Assemble and Install Storm Collar

CAUTION! Risk of Cuts, Abrasions or Flying Debris. Wear protective gloves and safety glasses during installa- tion. Sheet metal edges are sharp.

• Connect both halves of the storm collar with two screws

24 in. min.

(610 mm)

Termination

Cap

		Horizontal
	20 in.	overhang
(508 mm)		Vertical
Lowest
		wall
Discharge
Opening

(see Figure 10.16).

• Wrap the storm collar around the exposed pipe section

closest to the roof and align brackets. Insert a bolt

(provided) through the brackets and tighten the nut to

complete the storm collar assembly (Figure 10.17). Make

sure the collar is tight against the pipe section.

• Slide the assembled storm collar down the pipe section

until it rests on the roof flashing.

• Caulk around the top of the storm collar (see Figure

10.24).

Storm Collar			12		X
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 10.14 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 10.16 Assembling the Storm Collar

Figure 10.17 Assembling the Storm Collar Around the Pipe

Figure 10.15

Heatilator • Novus NNXT • 4055-879 • Rev. o • 2/12 45