Miele DGC 6805 Operating And Installation Instructions page 175

All items used for connecting the appliance to the mains
water supply must comply with the current national and local
safety regulations in the country in which the appliance is
being installed.
The appliance must be connected to a cold water supply
only.
This appliance complies with DVGW regulations and may be
connected to a suitable supply without an extra non-return
valve if national regulations permit.
The water inlet pressure must be at least 100 kPa (1 bar) and
not exceed 600 kPa (6 bar). If it is higher than 600 kPa
(6 bar), a pressure reducing valve must be fitted.
The water inlet hose must be connected to the mains drinking
water supply by a stopcock with a 3/4" threaded union.
If this is not present, one must be installed by a suitably
qualified person.
The stainless steel inlet hose supplied must not be shortened.
If necessary a longer inlet hose of 3000 mm (3.0 m) in length
can be purchased. This may not be shortened either.
Old or previously used hoses must not be connected to
the appliance.
We recommend only using genuine original Miele hoses.
The total length of hose must not exceed 7500 mm
(7.5 m).
Before connecting the appliance to the mains supply and
before any work on it please flush the pipework through to
remove any deposits.
Plumbing
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