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Installation
Instructions
EXTERNAL EXHAUST DUCTING
OUTSIDE
TOP EXHAUST
(EXAMPLE
ONLY)
The
following
chart
describes
an
example
of one
possible
ductwork
installation.
DUCT PIECES
Roof Cap
12 Ft, (3,6m)StraightDuct
(6'715,2cm Round)
Rectangular-to-Round
TransitionAdaptor*
EQUIVALENT
NUMBER
EQUIVALENT
LENGTH
x
USED
=
LENGTH
24 Ft, (7,3m)
x
(1)
12 Ft,(3,6m)
x
(1)
5 Ft, (1,5m)
x
(1)
Equivalent l engthsof duct piecesare basedon actual tests and
reflect requirements for goodventingperformance with anyvent hood,
Total Length
=
24 Ft, (7,3m)
12 Ft,(3,6m)
5 Ft, (1,5m)
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,
in 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.
DUCT PIECES
Wall Cap
3 Ft, StraightDuct
(31/4" x 10'78,2x 25,4cm
Rectangular)
90° Elbow
EQUIVALENT
NUMBER
EQUIVALENT
LENGTH*
x
USED
=
LENGTH
40 Ft,(12,2m)
x
(1)
3 Ft, (0,9m)
x
(1)
10 Ft,(3 m)
x
(2)
40 Ft,(12,2m)
3 Ft, (0,9m)
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.
EN-11
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