This type of solar water heater has pumps to circulate thermal media (water, or glycol), to exchange heat from the solar collector to the water storage tank. The thermal media circulates and collects heat from the collector and transfers to the drain back storage tank. The solar pump activates and heat transfer occurs only when it is required, and as a result, heating of the water happens in a controlled manner. As the media drains to the drain back tank from the collector freely, the storage tank always needs to be installed below the collector, and the interconnecting pipes must have slope.
Tanks can be installed separately from the collector
Electric backup heater with auto temperature control
Remote monitoring & Control options