Hearth & Home Technologies • BV4236DBI, BV4842DBI • 2209-900 Rev. N • 9/1224
7 VentInformationandDiagrams 

B. VentSystemConguration

CAUTION! Risk of Fire! ALL vent conguration speci-
cations MUST be followed. This product is tested and
listed to these specications. Appliance performance will
suffer if specications are not followed.
Rise to Run Ratio = 2:1
Maximum Total Horizontal Run = 30 Feet
Minimum Total Vertical Rise = 12 Feet
Maximum Total Vertical Rise = 60 Feet
Maximum Number of Elbows: Two 90º or Four 45º
Figure7.1

A. VentGuidelines

WARNING! Fire Risk/Asphyxiation! This appliance re-
quires the specied pipe for operation. Incorrect pipe may
cause spillage, condensation and overheating.
Figure7.2
These models require the following size B-vent double
wall, or single wall rigid or ex vent pipe.
METAL
PLUMBERS' STRAP
MAXIMUM HORIZONTAL RUN IS 50%
OF VERTICAL. HORIZONTAL RUN
CANNOT BE MORE THAN 30 FT.
VENT SUPPORTS
ARE PER VENT
MANUFACTURER'S
SPECIFICATIONS.
METAL
PLUMBER’S
STRAP
12 FEET
MINIMUM
VENT SUPPORTS ARE PER
VENT MANUFACTURER’S
SPECIFICATIONS
MINIMUM CLEARANCES
ARE PER VENT
MANUFACTURER’S
SPECIFICATIONS
• Follow pipe manufacturer’s installation guidelines when
installing the appliance.
WARNING! Fire Risk/Explosion/Asphyxiation! DO
NOT connect this gas appliance to a chimney ue serving
a separate solid-fuel or gas burning appliance.
• Vent this appliance directly outside.
• Use separate vent system for this appliance.
May impair safe operation of this appliance or other appli-
ances connected to the ue.
WARNING! Risk of Fire or Explosion! Insulation and
other combustibles must not infringe on clearances.
• ALWAYS maintain specied clearances around venting
and restop systems.
• Install restops as specied.
Failure to keep insulation or other material away from vent
pipe may cause re.
Figure7.3
45 DEGREES
ELBOW
90 DEGREES
ELBOW
OFFSETS EXCEEDING
45 DEGREES ADAPT
HORIZONTAL LIMITATIONS
MAXIMUM
HORIZONTAL
30 FEET
MINIMUM
VERTICAL
9 FEET
Note: Maximum horizontal
distance is 50% vertical vent
height.
Note:Horizontal runs must have
minimum rise in accordance with
mechanical codes.
Model PipeSize
BV4842DBI 5 inch
BV4236DBI 5 inch