solar collector 1.heat copper pipe 2.-30 degree use 3.EN solar keymark 4.12years export Split Pressurized Solar Water Heater System The whole ... 5L-8L, controller, manometer, flow-meter, pressure relief valve, copper fittings etc.Technology data:Working volt: AC220V,50Hz (optional)Consuming power ... controlling power: 92WElectric heater power: 1500WCreepage currency: ≤10mA/0.1s solar collector