Hearth and Home Technologies 4055-187 Termination Locations, Vent Termination Minimum Clearances

6 Termination Locations

A. Vent Termination Minimum Clearances

WARNING

Fire Risk.

Maintain vent clearance to combustibles as specified.

• DO NOT pack air space with insulation or other materials.

Failure to keep insulation or other materials away from vent pipe may cause fire.

A	B
6 in. (minimum) up to 20 in.	18 in. minimum
152 mm/508 mm	457 mm
20 in. and over	0 in. minimum

Gas, Wood or Fuel Oil

Termination Cap

B

A *

Gas

24 in. min.

(610 mm)

Termination

Cap

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

Termination

Cap **

* If using decorative cap cover(s), this distance may need to be

increased. Refer to the installation instructions supplied with the

decorative cap cover.

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

**	In a staggered installation with both gas and wood or fuel oil
	terminations, the wood or fuel oil termination cap must be
	higher than the gas termination cap.

Figure 6.2 Multiple Termination Caps

Figure 6.1 Minimum Height From Roof To Lowest Discharge Opening

22 Heatilator • Novus NDV Series • 4055-187 Rev. V • 1/12