The fresh-water module FriwaMini is suitable for a tap performance of up to 29 l/min. The module is completely assembled with flat gaskets and equipped with ball valves and an integrated check valve (200 mm wc) in the return of the solar circuit. This prevents any unintended gravity circulation. The domestic hot-water circuit with piston valves and ball valves in the primary circuit is key-operated. The flow meter in the primary and secondary circuit is for electronic measurement of the flow rate and the heat quantity. Additionally, FriwaMini has a highly-efficient and extra long stainless steel plate heat exchanger for optimal temperature transfer, a high-efficiency Grundfos pump UPM3 15-70 CIL3 secondary and an integrated completely pre-assembled solar controller FC4.13.