... : heat exchanger (red copper), electric heater (1.5kw, 2kw, 2.5kw, 3kw), assistant tank( 5L, 8L, 12L, 15L), magnesium barFeature:Working with high ... pressure, so do the water it produces.It uses the heat pipe to deliver the heat energy, it can work ... still work in the event of occasional tube breakage. Parameter Compact Pressurized Solar Water Heater