solar water heater(separate pressurized system)

Working Principle
1.when the temperature of the heat collector reaches the set value, the controller shall start the circulation pump automatically.
2.The circulation pump maks heat-conducting liquid circulate automatically.
3.The heat-conducting liquid transfers heat to water by the heat exchanger in the water tank.
4.In Case the temperature of the circulation pump does not reach the set value, the circulation pump shall be stop working automatically.
5.In Case the temperature of the water tank does not reach Tmax, then start the electrical
Structure
The split solar heating system is composed by solar heat collector,cylinder water tank,controller,circulation pump, pressure gauage,flowmeter,anti-returning valve,pressure releasing valve other accessories.