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Heat & Glo • SL-550 / 750 / 950TV-D • 2053-985 Rev. J • 4/0712
A. Vent Termination Minimum Clearances
Fire Risk.
Explosion Risk.
Maintain vent clearance to combustibles as
specifi ed.
• 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 Minimum Height from Roof to Lowest Discharge
Opening
Termination Locations
4
Figure 4.2 Multiple Vertical Termination
Figure 4.1 specifi es minimum vent heights for various
pitched roofs.
* 3 foot minimum in snow regions
GAS OR WOOD
TERMINATION
8 FEET
(MINIMUM) TO
PERPENDICULAR
WALL (GAS ONLY)
18 IN.
A
GAS
TERMINATION
VERTICAL
WALL
TERMINATION
CAP
12
X
ROOF PITCH
IS X/ 12
LOWEST
DISCHARGE
OPENING
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
8 FEET
Termination Clearances
Gas Wood
A 6 inches 20 inches
WARNING