Feature of Complete Solar System :
1)The controller will switch on the pump when the temperature at the
collector sensor is higher than the return temperature by at least the pre
selected (delta T) amount.
2)The pump circulates a heat transfer liquid around the loop.
3)Heat from the collector is transferred to the domestic water through the heat
exchange coil in the tank.
4)With the pump running, if delta T is not met, the pump will switch off.
5)When a preset tank temperature is reached, the controller switches off the
pump.
6)When there is not enough energy from collector, electrical heating element
will be automatically started by controller