{"product_id":"grundfos-99163903-alpha2-15-55f-high-efficiency-circulator-pump","title":"Grundfos 99163903 ALPHA2 15-55F High-Efficiency Circulator Pump","description":"\u003ca href=\"https:\/\/product-selection.grundfos.com\/us\/products\/alpha-north-america\/alpha2-north-america\/alpha2-15-55f-99163903?tab=variant-specifications\u0026amp;pumpsystemid=1539234755\" target=\"_blank\"\u003eBrochures \u0026amp; Secification Sheets \u003c\/a\u003e\u003cbr\u003e\u003cbr\u003e\u003cdiv class=\"cmp-application-list\"\u003e\n\u003cspan\u003eSuitable for\u003c\/span\u003e\u003cul class=\"cmp-application-list-content\"\u003e\n\u003cli index=\"0\"\u003eHVAC: Heating\u003c\/li\u003e\n\u003cli index=\"1\"\u003ePlumbing: Hot Water Recirculation\u003c\/li\u003e\n\u003cli index=\"2\"\u003eResidential hot water recirculation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"cmp-reveal cmp-catalogue-hero__reveal-tooltip\"\u003e\u003cdiv class=\"cmp-reveal__container\"\u003e\u003cdiv id=\"application-list-content-3a378792\" class=\"cmp-reveal__content\"\u003e\u003cul\u003e\n\u003cli\u003eResidential heating\u003c\/li\u003e\n\u003cli\u003eDistrict heating\u003c\/li\u003e\n\u003cli\u003eIndustrial heating\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cp itemprop=\"description\" class=\"cmp-catalogue-hero__description\"\u003eALPHA2 15-55 is a high-efficiency ECM variable speed circulator designed for a variety of heating and hot-water recirculation applications. The pump features AUTOADAPT and constant-pressure control modes.\u003c\/p\u003e\u003cp\u003eThe Grundfos ALPHA2 is a high-efficiency, variable speed circulator fitted with electronically commutated motor. Designed for circulating liquids in heating systems.\u003c\/p\u003e\u003cp\u003eIt features a constant pressure control mode and a constant curve with each three settings. The factory default setting is AUTOADAPT which continuously adjusts the pump performance to the actual heat demand, i.e. the size of the system and the changing heat demand during the year. The function will find the setting that provides optimal comfort with minimal energy consumption. It contributes to fast, safe and easy commissioning.\u003c\/p\u003e\u003cp\u003eThe intuitive one-button operation and LED display makes the selection of the settings easy. The large LED display shows the current energy consumption in Watts and estimated flow in gallons per minute.\u003c\/p\u003e\u003cp\u003eALPHA2 materials and design are resistant to blockage from magnetite found in hydronic systems.\u003c\/p\u003e\u003cp\u003eThe robust startup enables ALPHA2 to continuously attempt to restart – indefinitely – in blocked rotor conditions.\u003c\/p\u003e\u003cp\u003eALPHA2 is complete with an integrated check-valve, and nut captures for flanges.\u003c\/p\u003e\u003cp\u003eFor power connection two options are available with either line cord or terminal box for conduit connections.\u003cbr\u003e\u003cimg src=\"https:\/\/api.grundfos.com\/gpi\/imaging\/pumpcurve?pumpsystemid=1539234755\u0026amp;frequency=60\u0026amp;languagecode=USA\u0026amp;productrange=GPU\u0026amp;searchdomain=SALEABLE\u0026amp;unitsystem=3\u0026amp;currency=%24\u0026amp;w=691\u0026amp;h=500\u0026amp;dpi=96\u0026amp;fmt=PNG\" alt=\"performance-curve\"\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003cheader class=\"b-deck__header\"\u003e\u003ch2 class=\"b-deck__heading\"\u003eSpecifications\u003c\/h2\u003e\u003c\/header\u003e\u003cdiv\u003e\u003cdiv aria-live=\"polite\" class=\"cmp-variant-product-data\"\u003e\u003cdiv class=\"b-layout-grid\"\u003e\u003cdiv class=\"b-layout-grid__group\"\u003e\n\u003cdiv class=\"b-layout-grid__item b-layout-grid__item--12 b-layout-grid__item--large-6\"\u003e\n\u003cdiv class=\"cmp-variant-product-data__column-item\"\u003e\u003ctable border=\"1\"\u003e\u003ctbody\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd data-label=\"Product name\"\u003eALPHA2 15-55F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eProduct No.\u003c\/td\u003e\n\u003ctd data-label=\"Product No.\"\u003e99163903\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd data-label=\"EAN\"\u003e5712607918224\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"cmp-variant-product-data__column-item\"\u003e\n\u003ch3\u003eTechnical\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\u003ctbody\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eHead max\u003c\/td\u003e\n\u003ctd data-label=\"Head max\"\u003e18.05 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eTF class\u003c\/td\u003e\n\u003ctd data-label=\"TF class\"\u003e110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eApprovals on nameplate\u003c\/td\u003e\n\u003ctd data-label=\"Approvals on nameplate\"\u003eETL, FCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cmp-variant-product-data__column-item\"\u003e\n\u003ch3\u003eMaterials\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\u003ctbody\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003ePump housing\u003c\/td\u003e\n\u003ctd data-label=\"Pump housing\"\u003eCast iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd data-label=\"\"\u003eEN 1561 EN-GJL-150\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eImpeller\u003c\/td\u003e\n\u003ctd data-label=\"Impeller\"\u003eComposite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cmp-variant-product-data__column-item\"\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\u003ctbody\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eRange of ambient temperature\u003c\/td\u003e\n\u003ctd data-label=\"Range of ambient temperature\"\u003e32 .. 104 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eMaximum operating pressure\u003c\/td\u003e\n\u003ctd data-label=\"Maximum operating pressure\"\u003e145.04 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eType of connection\u003c\/td\u003e\n\u003ctd data-label=\"Type of connection\"\u003eGF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003ePressure stage\u003c\/td\u003e\n\u003ctd data-label=\"Pressure stage\"\u003ePN 10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003ePort-to-port length\u003c\/td\u003e\n\u003ctd data-label=\"Port-to-port length\"\u003e6 1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"b-layout-grid__item b-layout-grid__item--12 b-layout-grid__item--large-6\"\u003e\n\u003cdiv class=\"cmp-variant-product-data__column-item\"\u003e\n\u003ch3\u003eLiquid\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\u003ctbody\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003ePumped liquid\u003c\/td\u003e\n\u003ctd data-label=\"Pumped liquid\"\u003eWater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eLiquid temperature range\u003c\/td\u003e\n\u003ctd data-label=\"Liquid temperature range\"\u003e35.6 .. 230 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eSelected liquid temperature\u003c\/td\u003e\n\u003ctd data-label=\"Selected liquid temperature\"\u003e140 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd data-label=\"Density\"\u003e61.35 lb\/ft³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cmp-variant-product-data__column-item\"\u003e\n\u003ch3\u003eElectrical data\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\u003ctbody\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003ePower input - P1\u003c\/td\u003e\n\u003ctd data-label=\"Power input - P1\"\u003e5 .. 45 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eMain frequency\u003c\/td\u003e\n\u003ctd data-label=\"Main frequency\"\u003e60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eRated voltage\u003c\/td\u003e\n\u003ctd data-label=\"Rated voltage\"\u003e1 x 115 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eMaximum current consumption\u003c\/td\u003e\n\u003ctd data-label=\"Maximum current consumption\"\u003e0.1 .. 0.65 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eEnclosure class (IEC 34-5)\u003c\/td\u003e\n\u003ctd data-label=\"Enclosure class (IEC 34-5)\"\u003eIP42\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eInsulation class (IEC 85)\u003c\/td\u003e\n\u003ctd data-label=\"Insulation class (IEC 85)\"\u003eF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eBuilt-in motor protection\u003c\/td\u003e\n\u003ctd data-label=\"Built-in motor protection\"\u003eNONE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eThermal protec\u003c\/td\u003e\n\u003ctd data-label=\"Thermal protec\"\u003eELEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cmp-variant-product-data__column-item\"\u003e\n\u003ch3\u003eControls\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\u003ctbody\u003e\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003ePos term box\u003c\/td\u003e\n\u003ctd data-label=\"Pos term box\"\u003e6H\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cmp-variant-product-data__column-item\"\u003e\n\u003ch3\u003eOthers\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\u003ctbody\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd data-label=\"Net weight\"\u003e7.06 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eGross weight\u003c\/td\u003e\n\u003ctd data-label=\"Gross weight\"\u003e7.37 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eShipping volume\u003c\/td\u003e\n\u003ctd data-label=\"Shipping volume\"\u003e0.28 ft³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cmp-variant-product-data__table-row\"\u003e\n\u003ctd\u003eSales region\u003c\/td\u003e\n\u003ctd data-label=\"Sales region\"\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":47344932520109,"sku":"99163903","price":253.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/5895\/3645\/files\/99163903.png?v=1787908509","url":"https:\/\/www.bostonheatingsupply.com\/products\/grundfos-99163903-alpha2-15-55f-high-efficiency-circulator-pump","provider":"Boston Heating Supply","version":"1.0","type":"link"}