Termination Locations; Vent Termination Minimum Clearances - Heat & Glo Crescent II Owner's Manual

4

Termination Locations

A.

Vent Termination Minimum Clearances

WARNING
Fire Risk.
Explosion 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.
Measure vertical clearances from this surface.
Measure horizontal clearances from this surface.
(See Figure 4.4 for specific clearances)
Figure 4.1
Figure 4.2 specifies minimum vent heights for various
pitched roofs.
Heat & Glo • Crescent II • 2083-902 Rev. G • 9/05
2 FT.
20 INCHES
MIN.
LOWEST
DISCHARGE
OPENING
TERMINATION
CAP
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
Roof Pitch
Flat to 6/12 ......................................................... 1.0*
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 4.2 Minimum Height from Roof to
Lowest Discharge Opening
GAS, WOOD or FUEL
OIL TERMINATION
GAS
TERMINATION
18 IN.
A
Gas Termination Wood & Fuel Oil Termination
A 6 in.
Figure 4.3 Multiple Vertical Termination
HORIZONTAL
OVERHANG
VERTICAL
WALL
X
12
ROOF PITCH
IS X/ 12
H (Min.) Ft.
20 IN.
(MINIMUM) TO
PERPENDICULAR
WALL (GAS ONLY)
20 in.
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