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Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
A. Vent Termination Minimum Clearances
Figure 4.1 Minimum Height From Roof To Lowest Discharge
Opening
4
4
Termination Location and Vent Information
Fire 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 could cause overheating and fire.
WARNING
Figure 4.2 Staggered Termination Caps
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.(152 mm) (minimum)
up to 20 in. (508 mm)
18 in. (457 mm)minimum
20 in. (508 mm) 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.
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
VERTICAL
WALL
TERMINATION
CAP
HORIZONTAL
OVERHANG
305 mm
X
ROOF PITCH
IS X/ 305 mm
LOWEST
DISCHARGE
OPENING
510 mm MIN.
610 mm MIN.
Angle
H (Min.) mm
0°-26.6° ..........................................................
500*
26.6°-30.3° ..........................................................
500*
30.3°-33.7° ..........................................................
500*
33.7°-36.9° ..........................................................
610*
36.9°-39.8° ..........................................................
760*
39.8°-42.5° ..........................................................
990
42.5°-45.0° ........................................................
1 220
45.0°-49.4° ........................................................
1 520
49.4°-53.1° ........................................................
1 830
53.1°-56.3° ........................................................
2 130
56.3°-59.0° ........................................................
2 290
59.0°-60.3° ........................................................
2 440
*910 mm minimum in snow regions