... air pressure, by evacuating the heat pipe, we can achieve the same result. The heat pipes used in ... tank, so the cold water inside the tank can get heat from heat pipe, and become hot water ... Because the water tank is close, so it can endure 0.6Mpa(6 bar), when the tap go ... 20 degree, 25 degree, 30 degree, 38 degree, 45 degree.P.S. 1. Controller can display the temperature, water level, automatically ...