Plumbing
Connection to the water inlet
The machine must be connected to
the water supply in accordance with
the local and national regulations,
(NWC in GB).
The machine is constructed to com-
ply with DVGW regulations, in such a
way that an external non return valve
is not required.
The water pressure (flow rate) must
be between 2.5 and 10 bar. If the
water pressure is not within this
range, the Customer Service Depart-
ment will advise you of the measures
to take (see also "Programming spe-
cial functions").
The machine is supplied as standard
for connection to cold (blue mark-
ings) and hot (red markings) water
supply to max. 70°C. See next page
for AD connection to purified water
(H20 pure).
The inlet hoses should be connected
to the respective cold and hot water
stopcocks.
If no hot water supply is available,
the hose for hot water (red marking)
must also be connected to the cold
water supply. In this case both hoses
must be connected to the cold water
supply.
In special cases, see Programme E
in the chart, connection of both
hoses to hot water is recommended.
In order to prolong its life, the hose
marked 90°C should only be used
on a hot water connection supplying
water no hotter than 70°C.
Stopcocks with 3/4 BSP male thread
to be provided on site. They should
be easily accessible because the
water supply must be turned off
when the machine is not in use.
The DN 10 inlet pressure hoses are
approximately 1.7 m long and termi-
nate in a 3/4" female thread. On no
account must the inlet filters be
removed.
For additional protection of the sole-
noid valve against impurities in the
water supply, large surface area fil-
ters are enclosed in the kit supplied
with the machine (see illustration in
"Cleaning and care, water inlet").
The filter for AD purified water (H2O
pure) is made from chrome-nickel
steel and has a matt upper surface.
Consult the installation instructions sup-
plied.
The water in the machine is not suit-
able for drinking.
Plumbing
39