Venting
requirements
Determine which venting method is best
for your application. Vent system can
extend either through the wall or the
roof.
Locate the exterior blower so that the
length of the vent system and the
number of elbows is kept to a minimum
to provide efficient performance. Where
possible, exterior blower should be
centered between wall studs or roof
rafters. The size of the vent system
should be uniform. Do not install two
elbows together. Use duct tape to seal
all joints in the vent system. Use
caulking to seal exterior wall or floor
opening around the cap.
Flexible vent is not recommended. It
creates back pressure/air turbulence
and greatly reduces performance.
Make sure there is proper clearance
within the wall or floor for exhaust vent
before making cutouts. Avoid pipes,
wires, or other vent systems that may
be running through the wall. Do not cut
a joist or stud unless absolutely
necessary. If a joist or stud must be cut,
then a supporting frame must be
constructed.
The exterior blower carton contains a
black plastic vent collar and a vent collar
plate.
• The black plastic vent collar attaches
to the exterior blower using four
screws provided. The 10" (25.4 cm)
round vent system attaches to this
collar.
• The vent collar plate attaches to the
front of the downdraft vent system
plenum so that the 10" (25.4 cm)
round vent can be attached to the
downdraft vent system.
Make sure that there is enough space
for any vent transitions that may be
needed between the exterior blower and
the connecting vent system.
For optimum performance, locate any
necessary vent transitions nearest to
the rangehood or downdraft that will be
used with this power system.
This exterior blower requires a separate
U.L./CSA approved wiring cable that
should be installed at the same time the
vent system is being installed.