Vent Information And Diagrams; Vent Guidelines; Vent System Confi Guration - Heatilator NBV3630I Owner's Manual

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Vent Information and Diagrams

A. Vent Guidelines
WARNING! Fire Risk/Asphyxiation! This appliance re-
quires the specifi ed pipe for operation. Incorrect pipe may
cause spillage, condensation and overheating.
These models require the following size B-vent double
wall vent pipe.
Model
NBV3630I/NBV3933I
NBV4236I/NBV4842I
• Follow pipe manufacturer's installation guidelines when
installing the appliance.
WARNING!
Fire Risk/Explosion/Asphyxiation!
connect this gas appliance to a chimney fl 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
appliances connected to the fl ue.
B. Vent System Confi guration
CAUTION! Risk of Fire! ALL vent confi guration specifi -
cations MUST be followed.
to these specifi cations. Appliance performance will suffer if
specifi cations are not followed.
Rise to Run Ratio = 2:1
Maximum Total Horizontal Run = 30 Feet
Minimum Total Vertical Rise =129 Feet
Maximum Total Vertical Rise = 60 Feet
Maximum Number of Elbows: Four 90º or Eight 45º
WARNING! Risk of Fire or Explosion! Insulation and
other combustibles must not infringe on clearances.
• ALWAYS maintain specifi ed clearances around venting
and fi restop systems.
• Install fi restops as specifi ed.
Failure to keep insulation or other material away from vent
pipe may cause fi re.
22
Pipe Size
5 in. (127 mm)
5 in. (127 mm)
DO NOT
This product is tested and listed
Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09
12 ft (3.66 m) min.
60 ft (18.29 m) max.
Figure 7.1 Vertical Termination Clearances
Vent supports
are per vent
manufacturer's
specifications.
Maximum horizontal run is 50% of
vertical. Horizontal run cannot be
more than 30 ft. (9.14 m).
Figure 7.2 Maximum Horizontal Run
Maximum
horizontal
30 ft (9.14 m)
45°
Elbow
90°
Elbow
Figure 7.3 Maximum Horizontal Run Using 45° Elbows
Minimum
clearances are
per vent
manufacturer's
specifications
Metal
plumber's strap
secured to
framing
Vent supports are per
vent manufacturer's
specifications
Metal
Plumbers'
Strap
Offsets exceeding
45° adapt horizontal
limitations
Note: Maximum horizontal
distance is 50% of vertical
vent height.