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WINDCATCHER TECHNICAL SPECIFICATION

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400 SYSTEM 600 SYSTEM 800 SYSTEM 1000 SYSTEM 1200 SYSTEM Size of system 400mm square or circular 600mm square or circular 800mm square or circular 1,000mm square or circular 1,200mm square or circular Size of core 120mm diameter 200mm diameter 200mm diameter 200mm x 400mm 530mm diameter Number of fans 1up to 140 l/s 1up to 285 l/s 1up to 540 l/s 2up to 790 l/s 3up to 1,050 l/s Windcatcher ventilation rate (at 3m/s wind speed) Additional ventilation rate (from fan) 50 l/s 195 l/s 260 l/s 520 l/s 780 l/s Controller type Intelligent microcontroller with fan-speed control Intelligent microcontroller with powertrack power conversion and fan-speed control Intelligent microcontroller with powertrack power conversion and fan-speed control Intelligent microcontroller with powertrack power conversion and fan-speed control Intelligent microcontroller with powertrack power conversion and fan-speed control Controller input voltage 0 - 18V 0 - 18V 0 - 18V 0 - 18V 0 - 18V Controller output voltage 5 - 25V 5 - 25V 5 - 25V 5 - 25V 5 - 25V Slow/stop feature Yes Yes Yes Yes Low temperature sensing Optional Optional Yes Yes Yes Solar panel type High-efficiency polycrystalline High-efficiency polycrystalline High-efficiency polycrystalline High-efficiency polycrystalline High-efficiency polycrystalline Solar panel V 21V 21V 21V 21V 21V Solar panel peak power 15W 40W 40W 2 x 40W 3 x 40W Stop/restart feature Yes Yes Yes Yes Yes Slow feature Yes Yes Yes Yes Yes Maximum summer operation time 10 hours per day 13 hours per day 13 hours per day 13 hours per day 13 hours per day

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