Split Active Solar System
Hi Temp Split System Solar Water Heaters
Hi Temp’s split system solar water heaters are designed to give you the maximum flexibility of installation locations.
The low profile and unobtrusive Powerson solar collectors are mounted on a roof facing north, whilst the geyser storage tank is mounted in the ceiling roof out of sight. This minimises the visual impact of going solar, while maximising the potential savings from the sun.
How the Solar Split Systems Work
With open circuit split systems the water is circulated from the geyser tank at ground level through the solar collectors by an electric pump called a ‘circulator’.
Cooler water is circulated in a continuous cycle from the bottom of the tank and through the solar collectors where it absorbs the heat extracted from the sun before being returned to the tank.
A Geyserwise control unit on the water heater regulates the circulator. When the controller senses an 8°C differential in temperature between the top of the Powerson solar collectors and the bottom of the geyser tank, the circulator is activated until the temperature differential falls to 2°C. This ensures the optimum use of the sun’s free energy.
In closed circuit split systems, which are recommended for frost prone and poor water chemistry situations, Hartgard antifreeze fluid is used to circulate through the collectors. The heat harvested from the collectors is transferred from the fluid to the water in the tank by a heat exchanger.
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