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Hearth & Home Technologies, Inc. • Bravo, Aztec • InD • 703-900 Rev. N • 8/06 9
A. Vent Termination Minimum Clearances
Fire Risk.
Explosion Risk.
Maintain vent clearance to combustibles as
specifi ed.
WARNING
• Do not pack air space with insulation or
other materials.
Failure to keep insulation or other materials
away from vent pipe may cause fi re.
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
Figure 4.1
Figure 4.2 Minimum Height from Roof to
Lowest Discharge Opening
Termination Locations
4
Measure horizontal clearances from this surface.
Measure vertical clearances from this surface.
Figure 4.3 Multiple Vertical Termination
Figure 4.2 specifi es minimum vent heights for various
pitched roofs.
(See Figure 4.4 for specifi c clearances)
* 3 foot minimum in snow regions
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
Gas Termination Wood & Fuel Oil Termination
A
6 in. 20 in.
20 IN.
(MINIMUM) TO
PERPENDICULAR
WALL
(GAS ONLY)
GAS
TERMINATION
GAS,WOODORFUEL
OIL TERMINATION