Kenmore 79080332310 Installation Instructions Manual page 10

Installation Instructions
INSTALLATION INSTRUCTIONS FOR EXTERNAL EXHAUST DUCTING
NOTE: If
you need to install ducts, note that the total
duct length of 31/4" x 10" (8.2 x 25.4 cm) rectangular or
5" (12.7 cm) diameter/ 6" (15.2 cm) diameter round duct
should not exceed 120 equivalent feet (36.5 m).
Outside ventilation requires an
EXTERNAL EXHAUST
DUCT.Read the following carefully.
NOTE: It
is important that venting be installed using
the most direct route and with as few elbows as possible.
This ensures clear venting of exhaust and helps prevent
blockages. Also, make sure dampers swing freely and
nothing is blocking the ducts.
Exhaust connection:
The exhaust adaptor has been designed to mate with
a standard 31/4" x 10" (8.2 x
254 cm)
rectangular duct.
If a round duct is required, a rectangular-to-round
transition adaptor must be used. A 5" (12.7cm)/6" (15.2cm)
diameter duct is acceptable to use.
Maximum duct length:
For satisfactory air movement, the total duct length of
31/4 '' x 10" (8.2 x 25.4 cm) rectangular or 5" (12.7 cm)
diameter/6 "(15.2 cm) diameter round duct should not
exceed 120 equivalent feet (36.5 m).
Elbows, transitions, wall and roof caps,
etc.,
present additional resistance to airflow and are
equivalent to a section of straight duct which is longer
than their actual physical size. When calculating the total
duct length, add the equivalent lengths of all transitions
and adaptors plus the length of all straight duct sections.
The chart below shows you how to calculate total
equivalent ductwork length using the approximate feet
of equivalent length of some typical ducts.
DUCT PIECES
J
@
0
J
Rectangular-to-Round
TransitionAdaptor*
Wall Cap
90° Elbow
45° Elbow
90° Elbow
45° Elbow
RoofCap
StraightDuct6" (15,2cm)
Roundor 31/4 ``x 10"
(8,2x 25,4cm Rectangular)
EQUIVALENT
LENGTH
5 Ft,(1,5m)
40 Ft, (12,2m)
10 Ft, (3 m)
5 Ft,(1,5m)
25 Ft, (7,6m)
5 Ft,(1,5m)
24 Ft, (7,3m)
1 Ft,(0,3m)
NUMBER
x USED
x ()
x ()
x ()
x ()
x ()
x ()
x ()
x ()
Total Ductwork
EQUIVALENT
LENGTH
Ft,or m
Ft,or m
Ft,or m
Ft,or m
Ft,or m
Ft,or m
Ft,or m
Ft,or m
Ft. or 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 free movement of the damper.
Equivalent lengths of duct pieces are based on actual tests
and reflect requirements tot good venting perti}rmance with
any vent hood.
EN-IO