GUARDIAN will turn off and on daily, collecting heat whenever it is available. The automatic controller alerts the pump when to run. It also alerts the automatic check valve to open simultaneously. The pump then circulates colder water (from the bottom of your special solar storage tank), through your solar collector and returns the heated water to the tank. This cycle continues as long as the sun is available to provide heat to your water. When there is no heat available, the controller turns the pump off, and closes the check valve to prevent any loss of heat from the tank.
If your family ever needs more hot water than the sun can provide, GUARDIAN'S back-up heating element automatically takes over, insuring that you will always have all the hot water you need.
Worry-free performance is what the GUARDIAN SDHW system is all about.