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BS EN 61770-2009
Elektrische Ger?te zum Anschluss an die Wasserversorgungsanlage. Vermeidung von Rücksaugung und des Versagens von Schlauchs?tzen Electric appliances connected to the water mains. Avoidance of backsiphonage and failure of hose-sets Appareils électriques raccordés au réseau d'alimentation en eau. Exigences pour éviter le retour d'eau par siphonnage et la défaillance des ensembles de raccordement
适用范围：This International Standard specifies requirements for appliances for household and similarpurposes to prevent the backsiphonage of non-potable water into the water mains. It alsospecifies requirements for hose-sets used for connecting such appliances to the water mainsthat supply water at a pressure not exceeding 1 MPa.NOTE 1 Examples of similar purposes are the installation of appliances in canteens, restaurants, launderettesand communal flats.NOTE 2 This standard does not apply to– appliances used for dry cleaning;– appliances for medical purposes;– appliances intended for industrial purposes;– water heaters that are an integral part of the water supply system;– water coolers that are an integral part of the water supply system.NOTE 3 The connection of the appliance to the water mains may be temporary or permanent.NOTE 4 When reference is made to the water mains, water supplied from a cistern or similar system is alsoincluded.NOTE 5 Many countries have requirements concerning the prevention of contamination of potable water as aresult of contact with unsuitable materials upstream of a backflow prevention device.
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