How does solar thermal (water heating) work?
-Heat from the sun warms the solar panels.
-A sensor on the panel feels the heat and signals the controller to start a pump.
-The pump transfers the heated liquid to a hot water tank.
-Hot water is available for use as normal.
-An electric element on the water heater or a tank-less gas or electric element heats the water when there is either insufficient sun or larger than normal hot water usage.
-Once the sun goes down or when the water is sufficiently warm, the pump stops.
