KitchenAid KEC Installation Instructions Manual - Page 4
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Ventingsystemrequirements
Venting system must terminate
to the
outside.
Do Not terminate
the vent system in an
attic or other enclosed
space.
Do Not use 4-inch (10 cm) laundry-type
wall caps.
Use metal
vent only. Exception:
See
"optional
venting
under
a concrete
stab"", in "Venting
methods"
below.
Rigid
metat vent is recommended,
Do
not use plastic
or metat foil vent,
To reduce
risk of fire and to properly
exhaust
air, be sure to vent air outside,
Do Not vent exhaust
air into spaces
within
walls or ceilings or into attics,
crawl spaces
or garages.
Before
making
cutouts,
make sure there
is proper
clearance
within
the wall or
floor for the exhaust
vent.
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.
Vent materials needed for hstaHation
are not supplied,
Determine which venting method to use.
See "Venting methods," below.
Next, determine the equivalent vent length
using chart on Page 5. The maximum
equivalent vent length is 60 feet (18.3 m).
The blower
housing
is set to vent
straight out the back from the cooktop. To
vent down, left or right, see "installation,"
Step 2, Page 6.
This downdraft
cooktop
is rated at
50 feet (18.3 re) of straight
vent or the
equivament,
o If vent mength is 10 feet (3 re) or less,
6" (15.2 cm) diameter
round vent may
be used.
o if vent length
is more than
10 feet
(3 m), use 6" (152 cm) diameter
round
or 3ol/4" x 10" (8.3 x 25.4 cm)
rectangular
vent.
Therma[
breaks:
in areas of extreme
cold weather, it may be necessary
to
provide a short length of nonmetallic
duct
as close to the wall as possible to prevent
thermal conduction
along the metal vent.
For attitudes
above 4,500 ft (1372 m),
reduce recommended
vent run by 20%.
For the most efficient
and
quietest
operation:
[]
Use 26-gauge
minimum galvanized
or
25-gauge
minimum
aluminum
metal
vent. Poor-quality
pipe fittings can
reduce air flow. (Note: Local codes may
require a heavier-gauge
materiaL)
Flexible metal vent is Not
recommended.
[]
Do Not exhaust more than one
downdraft
cooktop into a single vent
system.
[]
The length of vent and number of
elbows should be kept to a minimum
to
provide efficient
performance.
[]
The size of the vent should be uniform.
[]
Use the fewest number of 90 ° elbows.
[]
Do Not install two elbows together.
[]
Make sure there is a minimum
of 18"
(45.7 cm) of straight vent between
the
elbows if more than one elbow is used.
(Elbows
too close together
cause
excess turbulence
that reduces
airflow.)
[] Do Not use a 5" (12.7 cm) elbow in a
6" (15.2 cm) or 3ol/4" x 10"
(8.3 x 25.4 cm) system.
[] Do Not reduce back to 5" (12.7 cm)
system after using 6" (15.2 cm) or
3ol/4" x 10" (8.3 x 25.4 cm) fittings.
[] Avoid forming handmade
crimps.
Handmade
crimps
may restrict airflow.
[]
Use the recommended
vent caps for
proper performance,
if an alternate
wall
or roof cap is used, be certain cap size
is not reduced and that it has a
backdraft
damper.
[]
Use duct tape to seal all joints in the
vent system.
[]
Use caulking
to seal exterior wall or roof
opening
around the cap.
Venting methods
9=5/8" (24,4 ¢m) = 30" (70.2 sm) m0del
13=5/lt_"
,0 sm) = 30" (01,4 sm) m0del
9=3/4" (24.8 sin)
h01e in rear or
side of cabinet
The cooktop may be vented through the wall or floor. Common venting methods and the
types of materials needed are shown.
Make sure there is proper clearance within the wall or floor for exhaust vent before
making cutouts.
ll
outside wall
_
peninsula
sabinet
er island
3=1/4" x 10"
(0,3 x 25.4 em
transition
elbow
inside wall to roof
directly
between
or overhang
outside
floor joists
peninsula
a=1/4"x lO"
(0.3 x 25.4 sin}
cabinet toe space
to outside