Metos 4241001, Operating Instructions Manual, Page: 76 / 90

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8 • WATER AND DRAIN CONNECTIONS
8.1 • WATER PRESSURE
The pressure of the water in the network
must be between 200 and 500 kPa, as
already stated under the heading “Technical
Data”. If the supply pressure is higher than
this, a pressure reduction valve must be
installed between the oven and the main.
8.2 • WATER CONNECTIONS TO THE
BOILER (IF APPLICABLE) AND
VAPORIZER
The water supplied to the vaporizer must
be either cold and softened or hot (max
50 °C), as described below. The water
c o n n e c t i o n i s R 3 / 4 ” . T h e h o s e f o r
connection to the water supply must be
provided by the installer. A shutoff valve
must be installed on the line between the
oven and the supply.
8.3 • WATER SPECIFICATIONS
The characteristics of the water must come
within the limits given below, in order to
prevent both corrosion, which is extremely
d a m a g i n g f o r t h e a p p l i a n c e , d u e t o
supplying water that is too softened or too
aggressive, and scaling in the oven and in
the water system in the case of supplying
water that is too hard.
Hardness: between 3° and 6° TH
PH: greater than 7.5
Chlorides: less than 30 ppm
These values are important for ensuring that
the water used by the appliance is suitably
treated!
8.4 • WATER CONNECTIONS FOR
CONDENSING STEAM
The water used for condensing steam need
not be softened, but must necessarily be
cold. The water connection is R 3/4”. The
hose for connection to the water supply
must be provided by the installer. A shutoff
valve must be installed on the line between
the oven and the supply.
8.5 • NOTE WHEN MAKING THE WATER CONNECTIONS
In case the water softener is not needed, the cold water must be connected into the both water
connections.