Installation
Venting the drainage system
If the dishwasher drain hose is connected to a floor drain or to a drain pipe that is less than 8" (20 cm) above the floor, the drain must be vented. Otherwise the water inside the dishwasher may siphon out during the wash program.
To vent the drain:
^Open the dishwasher door and remove the lower basket.
^Cut off the vent cap located at the right rear of the triple filter system, as illustrated.
Additional note
Since all Miele dishwashers are equipped with an odor trap and non- return valve, the drain hose can be connected directly to the drain pipe as illustrated.
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 m).
–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 reduced at any point.
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