When the discrepant temperature of the solar collector and water tank reaches the set value, the controller shall start the ciraulation pump automatically
The ciraulation pump makes heat-conducting liquid circulate automatically
The heat-conducting liquid transfers heat to water by heat exchanger in the water tank
In case the temperature of the water tank does not reach T max, then start the auxiliary heating device
If discrepant temperature of the collector and the water tank does not reach the set value, the circulation pump shall be shut automatically