FREE HOT WATER offers heavy-duty commercial solar pump stations, integrating functionality and safety components into one compact, pre-assembled, pre-engineered, and high-quality unit. The pump station features Grundfos variable speed circulation pump(s), providing adequate flow through a solar water heating system. A solar differential controller, with a graphical LED control interface, adjusts the speed to achieve the highest temperature between the collector and the storage tank. The light, commercial 1-1/2" pump station is good for up to 1000 square feet of solar thermal flat plate collectors, and includes a Grundfos UPS26-150 pump, NPT connections, temperature and pressure gauges, a six-gallon expansion tank, a glycol fill station, Grundfos VFS20-400 Temperature Vortex Flow Sensor, and a Sun Reports Web Monitoring System (CSI Approved Solar Thermal Metering Equipment to monitor and measure system performance, and the quantity of energy generated or displaced by the system).
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