6.5 Water connection
6.5.1
Water supply
Regulations for the water connection
Water pipes and connections must comply with local and national regulations. In particular these include:
■
DIN 1988 part 2 and part 4
■
EN 61770
■
EN 1717
For appliances with an NSF certificate, the following regulations must also be observed:
■
Regulations from the National Sanitation Foundation (NSF)
■
International Plumbing Code 2003
■
International Code Council (ICC)
■
Uniform Plumbing Code 2003, International Association of Plumbing and Mechanical Of
ficials (IAPMO)
The appliance must be installed with suitable backflow protection to comply with applicable federal, state, and local codes.
For Australia and New Zealand:
Water installation must be done in compliance with AS/NZS 3500 Plumbing and Drainage Code.
Connecting the water supply
The appliance is designed to be permanently connected to the customer's water supply.
Connecting the water supply with a flexible connecting pipe
The appliance can be connected to the water supply using a flexible DN10 water supply pipe to DIN EN 61770 with a 3/4"
screw connection.
Water quality and water hardness
■
Find out the water quality and water hardness from your local water supply company
, or test the water quality as descri-
bed in 'Testing the water quality' on page 62.
■
Information on the required drinking water quality is given in the 'Technical Data' chapter under the 'Water quality' head-
ing.
■
If necessary, provide suitable water treatment measures. For instance these may be installing a water filter and/or a wa-
ter treatment system.
■
Test the water quality as described in 'Testing the water quality' on page 62 to ensure that after water treatment, the
water meets the specified quality values.
■
Please note that the indicated recommended values for appliances with a boiler refer to the general hardness (GH °dH,
TH, ppm CaCO
3
or mmol/l alkaline earth ions). Other minerals dissolved in water can also create deposits. The need to
remove deposits will increase depending on which types of these minerals are present in the water and the service life of
the appliance. The deposits can be removed with a chemical cleaning agent such as a descaler or by connecting a water
treatment system (partial demineralization). Consult the Technical Service team for the right measures to take in individu-
al cases.
6 Installation
Installation manual 58
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