Hearth and Home Technologies B-Vent Gas Appliance CB4842MIR - Manual (Page 21)

Heatilator • Caliber Mesh BV Series • 4040-848 Rev G • 10/08 21
A. Vent Termination Minimum Clearances
A Gas Termination Wood or Fuel Oil Termination
B 6 in. (152 mm) min. 20 in. (508 mm) min.
B-Vent Gas, Wood or Fuel
Oil Termination
8 ft
(2.44 m)
(minimum) to
Perpendicular
Wall
(BV only)
18 in.
(457 mm)
A
Gas
Termination
B
Termination Caps Staggered Height
B-Vent Gas, Wood or Fuel
Oil Termination
8 ft
(2.44 m)
(minimum) to
Perpendicular
Wall
(BV only)
Wood, Gas or
Fuel Oil
Termination
20 in. min. *
(508 mm)
Termination Caps Same Height
* If using decorative cap cover(s), this distance may
need to be increased. Refer to the installation instruc-
tions supplied with the decorative cap cover.
Figure 6.1 Minimum Height From Roof To Lowest Discharge
Opening
6 6
Termination Locations
Fire 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 overheating and fi re.
WARNING
Figure 6.2 Termination Cap Clearances
12
X
8 ft
(2.44 m)
Lowest
Discharge
Opening
Termination
Cap
Roof Pitch
is X / 12
Vertical
wall
H (min.) - Minimum height
from roof to lowest
discharge opening.
Roof Pitch H (Min.) Ft. Roof Pitch H (Min.) Ft.
Flat to 6/12 1.0* Over 11/12 to 12/12 4.0
Over 6/12 to 7/12 1.25* Over 12/12 to 14/12 5.0
Over 7/12 to 8/12 1.5* Over 14/12 to 16/12 6.0
Over 8/12 to 9/12 2.0* Over 16/12 to 18/12 7.0
Over 9/12 to 10/12 2.5 Over 18/12 to 20/12 7.5
Over 10/12 to 11/12 3.25 Over 20/12 to 21/12 8.0
* 3 ft. minimum in snow regions
Storm Collar
Roof
Flashing