... 1000,000setssolar hot waterSolar water heater,solar hot water,solar water heating,solar heatingModel: SL-CLSFeature:1) Collectors combined with your inclined house ... for your choice.4) For the system with double coils in tank,it can operate with ... copper pipe: OD:12mm,thickness:1.0mm;)5).Workstations: SP106 with expansion tank6). Collectors: Φ58×1800 heat pipe vacuum collector tubes ( no water ...