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Hearth & Home Technologies • BV4236DBI, BV4842DBI • 2209-900 Rev. N • 9/12

A. VentTerminationMinimumClearances

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
Figure6.1 MinimumHeightFromRoofToLowestDischarge
 Opening
* 3 foot minimum in snow regions
6 TerminationLocations 

Fire Risk.

Maintain vent clearance to combustibles as

speci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 re.

WARNING
VERTICAL
WALL
LISTED B-VENT
TERMINATION
CAP
12
X
ROOF PITCH
IS X/ 12
LOWEST
DISCHARGE
OPENING
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
8 FEET
Figure6.2 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. (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.