Hearth and Home Technologies GDST3831I 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 overheating and fire.

		HORIZONTAL
		OVERHANG
2 FT.	20 INCHES MIN.	VERTICAL
MIN.
		WALL
	LOWEST
	DISCHARGE
	OPENING
GAS DIRECT VENT
TERMINATION CAP
		X
		12
		ROOF PITCH
		IS X/ 12
	H (MIN.) - MINIMUM HEIGHT FROM ROOF
	TO LOWEST DISCHARGE OPENING
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 6.1 Minimum Height From Roof To Lowest Discharge
Opening

DIRECT VENT GAS, WOOD OR FUEL

OIL TERMINATION

B

C

A

GAS

TERMINATION

		Minimum Dimensions
	Gas	Wood & Fuel Oil	Comments
	Termination	Termination
A	6 in.	20 in.	Horizontal distance between terminations
B	20 in.	24 in.	Distance to perpendicular wall
C	18 in.	18 in.	Vertical distance between terminations

Figure 6.2 Staggered Termination Caps

DIRECT VENT GAS, WOOD OR FUEL

OIL TERMINATION

		20 IN.
		(508 MM)
		(MINIMUM) TO
	20 IN. MIN. *	PERPENDICULAR
WOOD OR		WALL
	(508 MM)
GAS TERMINATION		(GAS ONLY)

*IF USING DECORATIVE CAP COVER(S), THIS DISTANCE MAY NEED TO BE INCREASED. REFER TO THE INSTALLATION INSTRUCTIONS SUPPLIED WITH THE DECORATIVE CAP COVER.

Figure 6.3 Leveled Termination Caps

Heatilator • GDST3831I • 2127-900 Rev. F • 10/08 21