... heat copper pipe 2.-30 degree use 3.EN solar keymark 4.12years export Split Pressurized Solar Water Heater System The ... be drawn from the collectors, the controller automatically activates the pumps. Heated solar fluid is then circulated from the collectors ... picturework station Includes:Circulation pump, expansion tank 5L-8L, controller, manometer, flow-meter, pressure relief valve, copper fittings ...