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Installation
Instructions
EXTERNAL EXHAUST DUCTING
NOTE: Read these next two pages only if you plan to vent your exhaust to the
outside. If you plan to recirculate the air back into the room, proceed to page 20.
OUTSIDE
TOP EXHAUST
(EXAMPLE
ONLY)
The
following
chart
describes
an
example
of one
possible
ductwork
installation.
DUCT PIECES
Roof Cap
EQUIVALENT
NUMBER
EQUIVALENT
LENGTH
x
USED
=
LENGTH
24 Ft, (7,3m)
x
(1)
24 Ft, (7,3m)
12 Ft, (3,6m)StraightDuct 12 Ft,(3,6m)
x
(1)
=
12 Ft,(3,6m)
(6'715,2cm Round)
Rectangular-to-Round
5 Ft, (1,5m)
x
(1)
=
5 Ft, (1,5m)
TransitionAdaptor*
Equivalent l engthsof duct piecesare basedon actual tests and
reflect requirements for goodventingperformance with anyvent hood,
Total Length
=
41 Ft. (12.5 m)
*
IMPORTANT:
If
a rectangular-to-round
transition
adaptor
is used,
the
bottom
corners
of
the
damper
will have
to be
cut
to fit, using
the
tin
snips,
ira order
to allow
fi'ee
movement
of the
damper:
OUTSIDE
BACK EXHAUST
(EXAMPLE
ONLY)
The following chart describes an example
of one possible
ductwork installation.
EQUIVALENT
NUMBER
EQUIVALENT
LENGTH*
USED
=
LENGTH
DUCT PIECES
x
":_::[_
Cap
(12,2m)
x
Wall
40 Ft,
3 Ft, StraightDuct
3 Ft, (0,9m)
x
(31/g' x 10'78,2x 25,4cm
Rectangular)
(_
90° Elbow
10 Ft,(3 m)
x
(1)
40 Ft,(12,2m)
(1)
=
3 Ft, (0,9m)
(2)
=
20 Ft,(3 m)
Equivalent l engthsof duct piecesarebasedon actualtests and
reflect requirements for goodventingperformance with anyvent hood,
Total Length
=
63 Ft. (19.2 m)
NOTE: For- back exhaust, care should be taken to align exhaust with space between studs, or"wall should be prepared
at the time it is constructed
by leaving enough
space between the wall studs to accommodate
exhaust.
11
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