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Venting the drainage system
The dishwasher drain must be vented
only if the drain hose is connected to a
floor drain or to a drain pipe that is
below the level of the bottom of the
lower basket; otherwise the water in-
side of the dishwasher may siphon out
during the course of a wash program.
To vent the drain:
Open the dishwasher door.
Cut off the vent cap located at the
right rear of the dishwasher, behind
the filters, as illustrated.
Additional note.
Since all Miele dishwashers are
equipped with an odor trap and non-re-
turn valve, the drain hose can be con-
nected directly to the drain pipe as illus-
trated.
If plumbing codes require an external
air gap on the discharge side of the
dishwasher, the following requirements
must be met:
– No part of the drain hose should be
higher than 39" (1 mm).
– If installed horizontally, the drain
hose can be up to 12 ft. (3.5 m) long.
If the drain hose is angled upwards
in any way, it cannot be longer than
5 ft. (1.5 m).
– The drain connection should be
made as close as possible to the
dishwasher.
– The internal diameter (7/8" or 22 mm)
of the drain hose should not be re-
duced at any point.
Plumbing
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