Water Connection; Cold Water Connection; Switching To Cold Water Operation; Hot Water Connection - Miele PWM 509 Operating And Installation Instructions

Installation
Cold water con-
nection
Switching to cold
water operation
Hot water con-
nection
54

Water connection

According to national regulations for drinking water quality, with ef-
fect from 21 March 2021, a non-return valve to prevent backsi-
phoning must be fitted between the stopcock and the water inlet
hose during commissioning on all appliances in Germany. The non-
return valve prevents water from the water inlet hose from flowing
back into the on-site drinking water supply.
The flow pressure must amount to a minimum of 100 kPa and must
not exceed 1000 kPa. If the flow pressure is higher than 1000 kPa, a
pressure reducing valve must be used.
The machine must be connected to the water supply using the inlet
hoses provided.
 The connection points are subject to water supply pressure.
Turn on the stopcock slowly and check for leaks. Correct the posi-
tion of the seal and screw thread if appropriate.
A stopcock with a ¾" external thread is required for the connection. If
this is not available, only a qualified installer may connect the wash-
ing machine to the mains water supply.
For the cold water connection, the supplied inlet hose for cold water
must be used (cold – blue stripes). The inlet hose for cold water is not
suitable for connection to a hot water supply.
If the hot water connection is missing, cold water consumption in-
creases accordingly to account for the missing water intake.
If the washing machine is not connected to a hot water point, you will
have to configure the settings Main wash water, Pre-wash water and
Rinse water to cold
Unscrew the hot water hose.

Screw on the stopper provided.

To minimise electrical energy consumption during operation with hot
water, the washing machine should be connected to a suitable hot
water ring circuit.
The hot water temperature must not not exceed 70 °C. So-called
"transmission pipes" (single pipes to hot water generators) can result
in any water remaining in the pipes cooling down if not in constant
use. More energy would then be consumed to heat the liquid up
again. The same connection requirements as for cold water also ap-
ply to hot water.
The inlet hose (hot = red stripes) is connected to the stopcock for the
hot water pipe.
(see "Supervisor level").