The iSolar BX is a powerful multi-functional temperature differential controller with add-on system functions and can be used for a wide variety of solar thermal heating applications. The iSolar BX is equipped with four relay outputs; three are triac pump speed control relays and one standard relay, as well as two PWM outputs for new high-efficiency EMC pumps. Additionally, the controller is equipped with five Pt1000 sensor inputs, two Grundfos flow sensor inputs, and one impulse flow meter input for built-in accurate heat energy metering (BTU meter).Twenty six predefined arrangements are configured for control of standard solar water heating system, drainback systems, supplemental space heating, multiple storage tanks, heat dump, storage tank boost heating and many others. The easy-to-use icons assist to operate and customize a solar water heating system. The integrated SD memory card slot enables easy data logging to an SD memory card as well as a quick and effortless transfer of logged system data to a PC.
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