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Quadra-Fire • Hudson Bay • 7003-121_R20 • 11/14
Figure 4.2 Multiple Vertical Termination
Figure 4.1 Termination Clearances
Figure 4.3
specifies minimum vent heights for various
pitched roofs.
Figure 4.3 Minimum Height from Roof to
Lowest Discharge Opening
A. Vent Termination Minimum Clearances
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.)
HORIZONTAL
OVERHANG
VERTICAL
WALL
GAS DIRECT VENT
TERMINATION CAP
12
X
ROOF PITCH
IS X/ 12
LOWEST
DISCHARGE
OPENING
2 FT.
MIN.
20 INCHES MIN.
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
Gas, Wood or Fuel Oil
Termination Cap
B
Gas
Termination
Cap **
A *
*
If using decorative cap cover(s), this distance may need to be
increased. Refer to the installation instructions supplied with the
decorative cap cover.
**
A
B
6 in. (minimum) up to 20 in.
152 mm/508 mm
18 in. minimum
457 mm
20 in. and over
0 in. minimum
In a staggered installation with both gas and wood or fuel oil
terminations, the wood or fuel oil termination cap must be
higher than the gas termination cap.
4
Termination Locations
WARNING
!
