{"product_id":"grundfos-alpha-solar-25-75-180-1x230v-9h-solar-umwalzpumpe-pk25-332","title":"Grundfos ALPHA Solar 25-75 180 1x230V 9H Solar Circulation Pump PK25\/332","description":"\u003cul\u003e\u003cli\u003e\u003cstrong\u003eHigh-efficiency circulator ALPHA SOLAR \u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eHigh-efficiency circulator ALPHA SOLAR for use in solar thermal systems with variable or constant volume flow. However, high-efficiency pumps with electronically commutated motors (ECM), such as the ALPHA SOLAR, must not be controlled by an external speed controller that changes or varies the supply voltage.\u003c\/p\u003e\u003cp\u003eThe speed can be regulated via a pulse width modulated signal (PWM signal) supplied by the solar system controller to optimize solar energy yield and system temperature. This also significantly reduces the pump's power consumption.\u003c\/p\u003e\u003cp\u003eIf no PWM signal is available, the ALPHA SOLAR can be set to one of 4 constant speeds. The pump is then only switched on and off via the controller.\u003c\/p\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eVersions\/Functions\/Features:\u003c\/strong\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\n\n\u003cli\u003eHigh-efficiency EC permanent magnet motor technology\u003c\/li\u003e\n\n\u003cli\u003eEnergy Efficiency Index (EEI) ≤ 0.20 according to EN 16297-3: 2012 Best in Class\u003c\/li\u003e\n\n\u003cli\u003ePWM profile C. The PWM signal is a method for generating an analog signal from a digital source\u003c\/li\u003e\n\n\u003cli\u003e4 constant speeds\u003c\/li\u003e\n\n\u003cli\u003eMaintenance-free\u003c\/li\u003e\n\n\u003cli\u003eLow noise\u003c\/li\u003e\n\n\u003cli\u003eEasy installation\u003c\/li\u003e\n\n\u003cli\u003eDe-blocking screw\u003c\/li\u003e\n\n\u003cli\u003eMax. ambient temperature +70°C\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003ch2\u003eGrundfos ALPHA Solar 25-75 180\u003c\/h2\u003e\u003cul\u003e\n\n\u003cli\u003eItem no.: 98989300\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 1 x 230 Volt\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 50 Hz\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003ePower:\u003c\/strong\u003e 2 - 45W\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003cp\u003emax. pressure: 10 bar\u003c\/p\u003e\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eDelivery height:\u003c\/strong\u003e 7.5 m\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eConnection thread:\u003c\/strong\u003e 1 1\/2 inch\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eInstallation length:\u003c\/strong\u003e 180 mm\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCondition:\u003c\/strong\u003e new (original packaging)\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eOur item number:\u003c\/strong\u003e PK25\/332\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Pumpenkost","offers":[{"title":"Default Title","offer_id":57277186244948,"sku":"PK25\/332","price":429.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/5620\/0020\/files\/9w3ziaco_1_1.png?v=1790297750","url":"https:\/\/www.pumpenkost.com\/en\/products\/grundfos-alpha-solar-25-75-180-1x230v-9h-solar-umwalzpumpe-pk25-332","provider":"Pumpenkost GmbH","version":"1.0","type":"link"}