... The split pressurized solar water heating system is made up of solar collector, pressurizedwater tank, pump working station, expansion vessel, stainless ... Water Tank(100L-500L): porcelain enamel, with 2 copper coils for heat exchange, depending on the customers.2)Intelligent Controller: SR868C6.3)Pump Station ... )Built-in electrical back up: 1.5kw/2.5kw,with thermostat Split solar water heater system