CENELEC - EN 61770
Electric appliances connected to the water mains – Avoidance of backsiphonage and failure of hose-sets
|Publication Date:||1 May 2009|
|ICS Code (Laundry appliances):||97.060|
|ICS Code (Kitchen equipment):||97.040|
This European Standard specifies requirements for appliances for household and similar purposes to prevent the backflow of non-potable water into the water mains. It also specifies requirements for hose sets used for connecting such appliances to the water mains that supply water at a pressure not exceeding 1 MPa.
NOTE 1 Examples of similar purposes are the installation of appliances in canteens, restaurants, launderettes and communal flats.
NOTE 2 The connection of the appliance to the water mains may be temporary or permanent.
NOTE 3 When reference is made to the water mains, water supplied from a cistern or similar system is also included.
This standard does not apply to
a) appliances used for dry cleaning;
b) appliances for medical purposes;
c) appliances intended for industrial purposes;
d) water heaters that are an integral part of the water supply system;
e) water coolers that are an integral part of the water supply system;
f) backflow prevention devices for general purposes.