RESOL Solar Controller is based on ΔT differential logic  with considering solar thermal system features, such as drainback, anti-frost, collector warming up, flow monitoring, irradiation threshold, high/low limitation of collectors or loads and priority loading and so on. With the typical and special solar functions built in the controllers, the controllers “command” the solar thermal systems intelligently. A ΔT differential logic could be easily found in many controllers in the market; however, the built-in solar functions root from the manufacturers’ dedicated design and long-term experience in the solar thermal industry.  


  • Example_for_Controller_2018


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