Vent Termination Minimum Clearances - Heat & Glo MISSION-BAY 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 Termination Clearances
Gas or Wood
Termination
Gas
Termination
18 in.
(457mm)
Gas Termination
A 6 in.
(152mm)
Figure 4.2 Multiple Vertical Termination
Page 8
24 in. (610mm)
(minimum) to
Perpendicular
Wall (Gas Only)
A
Wood & Fuel Oil Termination
20 in.
(508mm)
Heat & Glo · Mission Bay · 250-7512F
2 FT.
MIN.
DISCHARGE
TERMINATION
CAP
Roof Pitch
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 4.3 Minimum Height from Roof to Lowest Discharge
Opening
Figure 4.3 specifies minimum vent heights for various
pitched roofs.
HORIZONTAL
OVERHANG
2 FT.
VERTICAL
WALL
LOWEST
OPENING
X
12
ROOF PITCH
IS X/12
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
H (Min.) Ft.
July 12, 2006