Advantages of the loop installation
Hotels, nursing homes and hospitals are under particular scrutiny by the health authorities. They carry out regular sampling of the installation systems in accordance with the German Drinking Water Ordinance in order to ensure hygienically safe drinking water use. The system operators are responsible for ensuring a hygienically safe drinking water delivery.
The expertise of a specialist is required when the use of water is interrupted frequently.
Solutions for residential buildings
Drinking water systems are aided with flow-through U-wall angles, which are used at the connection point of the tap. This reliably prevents stagnation zones. Floor and individual supply lines for hot water with a water volume greater than 3 litres are to be equipped with circulation up to the extraction point according to DVGW [German Technical and Scientific Association for Gas and Water] worksheet W551. This, however, causes problems for cold-water installations. The hollow spaces of a front wall installation may heat up, for example. Even when the „circulation“ is looped through, this may lead to undesired drinking water heating of the fittings carrying cold water and the cold water in the installation. The ring installation on floor helps to prevent this happening.