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35(3$5()25'8&7:25.
127( Ductwork MUST be vented outside. DO NOT
vent into a wall, ceiling, crawlspace, attic or any
concealed space.
Determine the best route for ductwork; it can
be routed in a variety of ways depending on the
kitchen layout.
,03257$17The downdraft air discharge outlet
for this unit is 3
1
ø4” x 10” rectangular. Plan ducting
accordingly.
Typical duct arrangement countertop series.
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In general, the use of flexible ducting is discouraged
because it can cause severely restricted airflow.
However, if the blower outlet and the floor or wall duct
location do NOT align well, then flexible METAL ducting
can be used to adapt to an offset. Good alignment
without use of flexible ducting is best.
127(
Do not exceed the maximum recommended offset
of 6”.
Do not allow the flexible ducting to kink or collapse.
Do stretch the flexible ducting as much as possible
to eliminate as much of the corrugation as
possible.
A 3
1
ø4” x 10” rectangle to 6” round transition duct is
available at your local building supply store.
127(Illustrations are for planning purposes only.
Inside wall
cabinet
Up inside wall to roof or
overhang
Directly to outside
Between floor joists Through cabinet toe space
Peninsula or island
Peninsula
Outside wall
cabinet
NOTE: PVC sewer pipe type PSM 12454-B
Schedule 40 ASTM D1785.
Wall Cap
Concrete
Slab
6″ (15 cm)
Dia. PVC
Sewer Pipe
6″ (15 cm)
Dia. Metal
Duct
Pack tightly with gravel
or sand completely
around pipe
3-1/4″ x 10″ Rectangular
to 6″ Round Transition
6″ (15 cm)
Dia. 90°
Metal Elbow
6″ (15 cm) Dia.
Metal Duct
16″
(40.6 cm)
Max.
12″
(30 cm)
Min.
6″
(15 cm)
Dia. PVC
Coupling
6″ (15 cm) Dia.
PVC Sewer Pipe
Elbow
6″ (15 cm) Dia.
PVC Sewer Pipe
Elbow
6″ (15 cm)
Dia. PVC
Sewer
Pipe
6″
(15 cm)
Dia.
PVC
Coupling
30′-0″ (9.14 m) Max.
6
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7
35(3$5$7,21
Back Venting
(Requires 3
1
/4” x 10”)
Bottom Venting
0D[
Centerline
to Centerline
Offset
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