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
Consult the installation instructions sup- plied.
The water in the machine is not suit- able for drinking.
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