{"product_id":"grundfos-magna1-25-100-n-stainless-steel-99221226-4307","title":"Grundfos MAGNA1 25-100 N Variable Speed Pump 240V Stainless Steel 99221226 #4307","description":"\u003ch2\u003eGrundfos MAGNA1 25-100 N – Stainless Steel Variable-Speed Hot Water Circulator Pump (99221226) #4307\u003c\/h2\u003e\n\n\u003cp\u003e\nThis listing is for a \u003cstrong\u003eGrundfos MAGNA1 25-100 N\u003c\/strong\u003e\nhigh-efficiency, single-head, variable-speed circulator pump featuring\na \u003cstrong\u003estainless steel pump housing\u003c\/strong\u003e, G 1 1\/2\"\nthreaded connections and a 180 mm port-to-port installation length.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe MAGNA1 N range is designed for efficient water circulation in\ndomestic hot-water systems, commercial heating installations,\ncooling circuits and other suitable building-services applications.\n\u003c\/p\u003e\n\n\u003cp\u003e\nUnlike standard cast-iron MAGNA1 pumps, the \u003cstrong\u003eN version\nfeatures a stainless steel housing\u003c\/strong\u003e, making it particularly\nsuitable for domestic hot-water circulation and applications\nrequiring improved corrosion resistance.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe pump incorporates a high-efficiency permanent-magnet motor\nand integrated electronic speed control. Its proportional-pressure,\nconstant-pressure and constant-curve operating modes allow\nperformance to be selected according to the hydraulic\nrequirements of the installation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe MAGNA1 provides straightforward operation and energy-efficient\ncirculation without the more advanced monitoring and control\nfeatures found on the MAGNA3 range.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Supplied as new\/unused surplus stock.\nThe pump has not been installed or used but may show minor\ncosmetic marks from storage and handling.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eGuarantee:\u003c\/strong\u003e Supplied with our 2-year guarantee.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Grundfos\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct range:\u003c\/strong\u003e MAGNA1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e MAGNA1 25-100 N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrundfos product number:\u003c\/strong\u003e 99221226\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 5712608941993\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel generation:\u003c\/strong\u003e Model C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump configuration:\u003c\/strong\u003e Single-head circulator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump design:\u003c\/strong\u003e Canned-rotor wet-rotor circulator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump housing:\u003c\/strong\u003e Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing material specification:\u003c\/strong\u003e EN 1.4308 \/ ASTM 351 CF8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpeller material:\u003c\/strong\u003e PES reinforced with 30% glass fibre\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal connection size:\u003c\/strong\u003e DN25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe connection:\u003c\/strong\u003e G 1 1\/2\" threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection pressure rating:\u003c\/strong\u003e PN10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort-to-port installation length:\u003c\/strong\u003e 180 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical supply:\u003c\/strong\u003e Single-phase 230V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply frequency:\u003c\/strong\u003e 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor type:\u003c\/strong\u003e Permanent-magnet synchronous motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed control:\u003c\/strong\u003e Integrated electronic frequency converter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical power input (P1):\u003c\/strong\u003e 9–176 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum current consumption:\u003c\/strong\u003e 1.42 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum head:\u003c\/strong\u003e 10 m (approximately 0.98 bar differential pressure)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum flow:\u003c\/strong\u003e Approximately 9.4 m³\/h (2.61 L\/s), towards the low-head end of the performance curve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum operating pressure:\u003c\/strong\u003e 10 bar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquid temperature range:\u003c\/strong\u003e -10°C to +110°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient temperature range:\u003c\/strong\u003e 0°C to +40°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure protection:\u003c\/strong\u003e IPX4D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation class:\u003c\/strong\u003e F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature class:\u003c\/strong\u003e TF110\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Efficiency Index:\u003c\/strong\u003e EEI 0.20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet weight:\u003c\/strong\u003e Approximately 4.38 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer gross weight:\u003c\/strong\u003e Approximately 4.78 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl:\u003c\/strong\u003e Integrated variable-speed electronic controller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote monitoring:\u003c\/strong\u003e Fault relay output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote operation:\u003c\/strong\u003e Digital start\/stop input\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e Grundfos GO Remote via compatible infrared communication equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStock reference:\u003c\/strong\u003e #4307\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eImportant hydraulic performance information:\u003c\/strong\u003e\nThe maximum head of approximately 10 metres and maximum flow\nof approximately 9.4 m³\/h represent different points on the\npump performance envelope.\n\u003c\/p\u003e\n\n\u003cp\u003e\nMaximum head occurs towards the low-flow end of the curve.\nMaximum flow occurs at significantly lower differential head.\nThese maximum values cannot be achieved simultaneously.\n\u003c\/p\u003e\n\n\u003cp\u003e\nAlways consult the manufacturer performance curve to confirm\nthat the required flow and head can be achieved together.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eNeed help confirming suitability?\u003c\/strong\u003e\u003cbr\u003e\nCall us on \u003cstrong\u003e01803 220416\u003c\/strong\u003e for technical advice.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eManufacturer Product Information\u003c\/h3\u003e\n\n\u003cp\u003e\nFor full manufacturer specifications, performance information\nand technical documentation, please visit:\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003ca href=\"https:\/\/product-selection.grundfos.com\/uk\/products\/magna\/magna1-n\/magna1-25-100-n-99221226\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\n\u003cstrong\u003eView Grundfos MAGNA1 25-100 N (99221226) – Official Product Information\u003c\/strong\u003e\n\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTechnical Documentation\u003c\/h3\u003e\n\n\u003cp\u003e\nThe following Grundfos-generated technical datasheet contains\nthe manufacturer's specifications, performance curves,\nelectrical data, dimensions and material information\nfor product number 99221226.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003ca href=\"https:\/\/www.anglianpumping.com\/app\/uploads\/2023\/03\/99221226.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\n\u003cstrong\u003eDownload Grundfos MAGNA1 25-100 N – Technical Datasheet (PDF)\u003c\/strong\u003e\n\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\n\u003cp\u003e\nThe Grundfos MAGNA1 25-100 N is intended for circulation\nof suitable clean liquids in heating, hot-water and\nbuilding-services installations.\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eDomestic hot-water circulation and secondary-return systems\u003c\/li\u003e\n\u003cli\u003eCommercial domestic hot-water distribution systems\u003c\/li\u003e\n\u003cli\u003eHotels, schools and commercial buildings\u003c\/li\u003e\n\u003cli\u003eHot-water circulation in suitable healthcare and institutional buildings\u003c\/li\u003e\n\u003cli\u003eCommercial central-heating systems\u003c\/li\u003e\n\u003cli\u003eRadiator heating circuits\u003c\/li\u003e\n\u003cli\u003eUnderfloor heating systems\u003c\/li\u003e\n\u003cli\u003eBoiler circulation and mixing loops\u003c\/li\u003e\n\u003cli\u003eHeating system distribution circuits\u003c\/li\u003e\n\u003cli\u003eGround-source heat pump systems\u003c\/li\u003e\n\u003cli\u003eSuitable solar-heating circulation circuits\u003c\/li\u003e\n\u003cli\u003eAir-conditioning and chilled-water systems\u003c\/li\u003e\n\u003cli\u003eSmall commercial cooling installations\u003c\/li\u003e\n\u003cli\u003eReplacement of compatible threaded circulation pumps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eStainless steel housing advantage:\u003c\/strong\u003e\nThe stainless steel N variant offers improved corrosion\nresistance compared with standard cast-iron circulators.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis makes it suitable for consideration in domestic\nhot-water circulation systems where a stainless steel\npump housing is required.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFinal suitability depends on the liquid properties,\nsystem design, operating temperatures and applicable\nwater regulations.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eMAGNA1 Control Functions\u003c\/h3\u003e\n\n\u003cp\u003e\nThe MAGNA1 incorporates an electronic controller\nand high-efficiency permanent-magnet motor.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe pump can be configured using its integrated\noperating panel, allowing the appropriate control\nsetting to be selected for the installation.\n\u003c\/p\u003e\n\n\u003ch4\u003eProportional-Pressure Control\u003c\/h4\u003e\n\n\u003cp\u003e\nProportional-pressure control adjusts the pump's\ndifferential-pressure setting according to the\nflow demand within the selected control curve.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis is particularly useful for heating systems\nwhere thermostatic radiator valves or other\ncontrol valves alter the system resistance.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe pump provides three proportional-pressure settings:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePP1:\u003c\/strong\u003e Low proportional-pressure curve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePP2:\u003c\/strong\u003e Medium proportional-pressure curve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePP3:\u003c\/strong\u003e High proportional-pressure curve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eConstant-Pressure Control\u003c\/h4\u003e\n\n\u003cp\u003e\nConstant-pressure control aims to maintain a selected\ndifferential pressure as system flow requirements change,\nwithin the available pump performance range.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThree settings are available:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCP1:\u003c\/strong\u003e Low constant-pressure setting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCP2:\u003c\/strong\u003e Medium constant-pressure setting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCP3:\u003c\/strong\u003e High constant-pressure setting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThis operating mode may be suitable for underfloor\nheating and other circulation systems requiring\na relatively constant differential pressure.\n\u003c\/p\u003e\n\n\u003ch4\u003eConstant-Curve Operation\u003c\/h4\u003e\n\n\u003cp\u003e\nThe pump can also operate at one of three\nconstant-speed curve settings.\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eI:\u003c\/strong\u003e Low constant-speed curve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eII:\u003c\/strong\u003e Medium constant-speed curve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIII:\u003c\/strong\u003e High constant-speed curve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nConstant-curve operation can be useful when replacing\nolder fixed-speed circulators, provided the selected\ncurve matches the required operating duty.\n\u003c\/p\u003e\n\n\u003ch4\u003eExternal Control and Monitoring\u003c\/h4\u003e\n\n\u003cp\u003e\nThe MAGNA1 Model C includes basic external control\nand monitoring functionality.\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital input:\u003c\/strong\u003e External start\/stop control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay output:\u003c\/strong\u003e Fault or alarm indication\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrundfos GO Remote:\u003c\/strong\u003e Supported through compatible infrared communication equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated operating panel:\u003c\/strong\u003e Local selection of pump operating modes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThe single-head MAGNA1 does not provide the same\nadvanced building-management communication options\nas the MAGNA3.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor applications requiring advanced BMS integration,\nflow monitoring, energy monitoring or more sophisticated\ncontrol functions, a suitable MAGNA3 model may\nbe more appropriate.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eWhat does MAGNA1 25-100 N mean?\u003c\/h4\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMAGNA1:\u003c\/strong\u003e Grundfos high-efficiency electronically controlled circulator range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25:\u003c\/strong\u003e Nominal DN25 connection size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100:\u003c\/strong\u003e Maximum head class of approximately 10 metres.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eN:\u003c\/strong\u003e Stainless steel pump housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e180:\u003c\/strong\u003e Port-to-port installation length of 180 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThe Grundfos manufacturer product number for\nthis particular pump is \u003cstrong\u003e99221226\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat does the N mean on a Grundfos MAGNA1?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe N designation identifies a stainless steel\npump housing.\n\u003c\/p\u003e\n\n\u003cp\u003e\nStandard MAGNA1 circulators generally feature\ncast-iron pump housings, whereas the N versions\nuse stainless steel for applications where\ndifferent corrosion-resistance or water-quality\nrequirements apply.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor this model, the housing material is\n\u003cstrong\u003estainless steel EN 1.4308 \/ ASTM 351 CF8\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs the MAGNA1 25-100 N suitable for domestic hot water?\u003c\/h4\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eYes, subject to the installation requirements.\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe stainless steel MAGNA1 N range is designed\nfor applications including domestic hot-water\ncirculation and secondary-return systems.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe stainless steel housing makes it more suitable\nfor these applications than a standard cast-iron\ncirculator.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe installation must comply with applicable\nwater regulations, temperature requirements\nand manufacturer guidance.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs the MAGNA1 N suitable for potable-water applications?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe stainless steel MAGNA1 N range is intended\nfor suitable domestic hot-water circulation\napplications.\n\u003c\/p\u003e\n\n\u003cp\u003e\nGrundfos has included MAGNA1 N products in its\nUK catalogues of WRAS-approved circulators.\n\u003c\/p\u003e\n\n\u003cp\u003e\nHowever, approval status and installation\nrequirements should be verified for the exact\nproduct and application before installation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nA stainless steel housing alone does not establish\ncompliance with every drinking-water regulation.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the difference between MAGNA1 N and a standard MAGNA1?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe main difference is the pump housing material.\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMAGNA1:\u003c\/strong\u003e Standard cast-iron housing for suitable heating and closed-loop circulation applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMAGNA1 N:\u003c\/strong\u003e Stainless steel housing for suitable domestic hot-water circulation and other applications requiring improved corrosion resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nBoth versions use high-efficiency electronic\nspeed control.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe stainless steel N version should be selected\nwhere the pumped liquid or application requires\nthis housing material.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the difference between MAGNA1 and MAGNA3?\u003c\/h4\u003e\n\n\u003cp\u003e\nBoth MAGNA1 and MAGNA3 are high-efficiency\nelectronically controlled circulation pumps.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eMAGNA1\u003c\/strong\u003e provides straightforward\noperation with proportional-pressure,\nconstant-pressure and constant-speed\ncontrol settings.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIt also includes basic fault monitoring\nand external start\/stop control.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eMAGNA3\u003c\/strong\u003e provides more advanced\ncontrol and monitoring functions, including:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eAUTOADAPT\u003c\/li\u003e\n\u003cli\u003eFLOWADAPT\u003c\/li\u003e\n\u003cli\u003eFLOWLIMIT\u003c\/li\u003e\n\u003cli\u003eAdditional control modes\u003c\/li\u003e\n\u003cli\u003eIntegrated flow estimation\u003c\/li\u003e\n\u003cli\u003eAdvanced operating information\u003c\/li\u003e\n\u003cli\u003eEnergy monitoring functionality\u003c\/li\u003e\n\u003cli\u003eExpanded external control and communication options\u003c\/li\u003e\n\u003cli\u003eOptional BMS communication through compatible modules\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nFor straightforward circulation duties,\nMAGNA1 is often the more economical solution.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWhere advanced monitoring, integrated system\ncontrol or BMS communication is required,\nMAGNA3 may be more appropriate.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the maximum head of this pump?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe maximum head class of the MAGNA1 25-100 N\nis \u003cstrong\u003e10 metres\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis is approximately equivalent to\n\u003cstrong\u003e0.98 bar differential pressure\u003c\/strong\u003e\nwhen pumping water.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe maximum head occurs towards the low-flow\nend of the pump performance curve.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis figure must not be confused with the\nmaximum system operating pressure of 10 bar.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the maximum flow rate?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe upper flow range shown by the manufacturer\nperformance curve is approximately\n\u003cstrong\u003e9.4 m³\/h\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis is equivalent to approximately:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2.61 litres per second\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e157 litres per minute\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThis upper flow value occurs at reduced\ndifferential head.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe available flow reduces as the required\nhead increases.\n\u003c\/p\u003e\n\n\u003cp\u003e\nAlways check the manufacturer's performance\ncurve against the required operating duty point.\n\u003c\/p\u003e\n\n\u003ch4\u003eCan this pump increase water pressure?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe MAGNA1 is a circulator designed to move\nwater through a suitable hydraulic circuit.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIt develops differential pressure to overcome\nresistance in pipework, valves and connected\nequipment.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIt is not designed as a direct replacement\nfor a dedicated domestic mains-water\npressure booster.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor boosting mains-water pressure, a suitable\nbooster pump or pressure-boosting system\nshould be selected instead.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat electrical supply is required?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe MAGNA1 25-100 N operates from a\n\u003cstrong\u003esingle-phase 230V AC supply\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe MAGNA1 Model C range supports\n50\/60 Hz electrical supplies.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe manufacturer's specified electrical\ninput power for product 99221226 is\n\u003cstrong\u003e9–176 W\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nMaximum current consumption is approximately\n\u003cstrong\u003e1.42 A\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003ch4\u003eDoes the MAGNA1 require an external inverter or VFD?\u003c\/h4\u003e\n\n\u003cp\u003e\nNo.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe MAGNA1 contains an integrated electronic\nfrequency converter and permanent-magnet motor.\n\u003c\/p\u003e\n\n\u003cp\u003e\nPump performance is adjusted through the\nintegrated electronic controller.\n\u003c\/p\u003e\n\n\u003cp\u003e\nA separate external variable-frequency drive\nis not required.\n\u003c\/p\u003e\n\n\u003ch4\u003eCan this pump automatically vary its speed?\u003c\/h4\u003e\n\n\u003cp\u003e\nYes.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWhen operating in proportional-pressure or\nconstant-pressure control mode, the pump\nadjusts its speed to maintain the selected\ncontrol characteristic as system demand changes.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIn constant-curve mode, the pump follows\nthe selected fixed-speed characteristic.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe MAGNA1 does not include the advanced\nAUTOADAPT function found on MAGNA3 pumps.\n\u003c\/p\u003e\n\n\u003ch4\u003eDoes the MAGNA1 support Grundfos GO Remote?\u003c\/h4\u003e\n\n\u003cp\u003e\nYes.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis MAGNA1 Model C supports communication\nwith Grundfos GO Remote using compatible\ninfrared communication equipment.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe single-head MAGNA1 communicates via\ninfrared rather than the radio communication\nused by certain other Grundfos pumps.\n\u003c\/p\u003e\n\n\u003cp\u003e\nA compatible Grundfos interface is required;\na smartphone alone should not be assumed\nto provide direct communication.\n\u003c\/p\u003e\n\n\u003cp\u003e\nGrundfos GO Remote can provide supported\ncommissioning and diagnostic functions,\nincluding alarm information and adjustment\nof certain settings.\n\u003c\/p\u003e\n\n\u003ch4\u003eCan this pump be controlled by a building management system?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe MAGNA1 provides basic external control\nand monitoring through its digital start\/stop\ninput and fault relay output.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThese connections can be incorporated into\na suitable external control system.\n\u003c\/p\u003e\n\n\u003cp\u003e\nHowever, MAGNA1 does not provide the same\nadvanced BMS communication capabilities\nas the MAGNA3 range.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWhere BACnet, Modbus or more advanced\nbuilding-management integration is required,\na compatible MAGNA3 or another suitable\ncirculator should be considered.\n\u003c\/p\u003e\n\n\u003ch4\u003eDoes this MAGNA1 have a 0–10V input or PWM control?\u003c\/h4\u003e\n\n\u003cp\u003e\nThis MAGNA1 Model C is intended for operation\nusing its integrated control modes and\nsupported external start\/stop input.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIt should not be assumed to support external\n0–10V speed control or dedicated PWM\nspeed-control signals.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIf the existing installation requires an\nanalogue speed-control signal or PWM interface,\nthe replacement pump's control compatibility\nmust be checked before ordering.\n\u003c\/p\u003e\n\n\u003ch4\u003eCan this pump replace Grundfos 98254908?\u003c\/h4\u003e\n\n\u003cp\u003e\nGrundfos product number \u003cstrong\u003e98254908\u003c\/strong\u003e\nidentifies an earlier MAGNA1 25-100 N\nstainless steel circulator variant.\n\u003c\/p\u003e\n\n\u003cp\u003e\nProduct number \u003cstrong\u003e99221226\u003c\/strong\u003e\nidentifies the later MAGNA1 25-100 N\nModel C version.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBoth belong to the same nominal DN25,\n10-metre head class and 180 mm\ninstallation-length category.\n\u003c\/p\u003e\n\n\u003cp\u003e\nHowever, differences between generations\nmay affect electrical connections,\ncontrols and installation requirements.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe complete manufacturer specifications\nshould be compared before treating\nthe two versions as interchangeable.\n\u003c\/p\u003e\n\n\u003ch4\u003eCan this pump replace an older Grundfos UPS circulator?\u003c\/h4\u003e\n\n\u003cp\u003e\nPotentially, provided the hydraulic duty,\nconnection dimensions, electrical supply\nand installation requirements are compatible.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe MAGNA1 uses a high-efficiency\npermanent-magnet motor and electronically\ncontrolled operation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIt may offer an energy-efficient alternative\nto certain older fixed-speed circulators.\n\u003c\/p\u003e\n\n\u003cp\u003e\nHowever, not every UPS pump is directly\ninterchangeable with this model.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe existing pump's flow, head,\nconnection dimensions and operating\nrequirements must be checked.\n\u003c\/p\u003e\n\n\u003ch4\u003eCan this pump replace a Wilo or Lowara circulator?\u003c\/h4\u003e\n\n\u003cp\u003e\nPotentially.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe MAGNA1 25-100 N may be considered\nas an alternative to compatible\ncirculators from other manufacturers.\n\u003c\/p\u003e\n\n\u003cp\u003e\nHowever, matching the nominal connection\nsize and installation length alone\ndoes not establish hydraulic equivalence.\n\u003c\/p\u003e\n\n\u003cp\u003e\nAlways compare:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eRequired operating flow\u003c\/li\u003e\n\u003cli\u003eRequired operating head\u003c\/li\u003e\n\u003cli\u003eComplete pump performance curve\u003c\/li\u003e\n\u003cli\u003eConnection dimensions\u003c\/li\u003e\n\u003cli\u003eInstallation length\u003c\/li\u003e\n\u003cli\u003eElectrical supply\u003c\/li\u003e\n\u003cli\u003eRequired control functions\u003c\/li\u003e\n\u003cli\u003ePump housing material\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eCan this pump be used with glycol?\u003c\/h4\u003e\n\n\u003cp\u003e\nMAGNA1 pumps can be used with suitable\nwater\/glycol mixtures within the\nmanufacturer's permitted operating limits.\n\u003c\/p\u003e\n\n\u003cp\u003e\nGrundfos provides guidance for mixtures\ncontaining up to approximately 50% glycol,\nsubject to liquid viscosity and other\noperating restrictions.\n\u003c\/p\u003e\n\n\u003cp\u003e\nGlycol mixtures have different viscosity\nand density characteristics from water\nand may reduce available hydraulic\nperformance.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe concentration, temperature and\nchemical compatibility must be checked\nbefore installation.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat liquids are unsuitable for this pump?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe MAGNA1 is intended for suitable\nclean, thin, non-aggressive liquids\nwithout solids or fibres.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIt should not be used for:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eWastewater or sewage\u003c\/li\u003e\n\u003cli\u003eLiquids containing abrasive particles\u003c\/li\u003e\n\u003cli\u003eLiquids containing significant suspended solids\u003c\/li\u003e\n\u003cli\u003eFlammable or explosive liquids\u003c\/li\u003e\n\u003cli\u003ePetrol or diesel\u003c\/li\u003e\n\u003cli\u003eSea water\u003c\/li\u003e\n\u003cli\u003eStrong acids or aggressive chemicals\u003c\/li\u003e\n\u003cli\u003eLiquids outside the manufacturer's permitted temperature or viscosity limits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThe stainless steel housing does not\nmake the pump suitable for every\ncorrosive liquid or chemical application.\n\u003c\/p\u003e\n\n\u003ch4\u003eWhat minimum inlet pressure is required?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe minimum required inlet pressure\ndepends on the liquid temperature.\n\u003c\/p\u003e\n\n\u003cp\u003e\nGrundfos MAGNA1 Model C guidance for\nthe 25-100 size gives the following\nminimum relative inlet pressures:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e75°C:\u003c\/strong\u003e 0.10 bar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e95°C:\u003c\/strong\u003e 0.35 bar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e110°C:\u003c\/strong\u003e 1.00 bar\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nAdequate inlet pressure is necessary\nto reduce the risk of cavitation\nand damage to the pump bearings.\n\u003c\/p\u003e\n\n\u003cp\u003e\nAdditional installation considerations\nmay apply at higher altitudes or under\nunusual operating conditions.\n\u003c\/p\u003e\n\n\u003ch4\u003eDoes this pump have a mechanical shaft seal?\u003c\/h4\u003e\n\n\u003cp\u003e\nNo.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe MAGNA1 uses a canned-rotor\nwet-rotor construction.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThere is no conventional mechanical\nshaft seal between the motor and pump.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe pumped liquid lubricates the\nrotor bearing arrangement.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis reduces routine maintenance\nrequirements compared with conventional\nmechanically sealed circulation pumps.\n\u003c\/p\u003e\n\n\u003ch4\u003eDoes the pump require external motor protection?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe MAGNA1 includes integrated\nelectronic motor protection.\n\u003c\/p\u003e\n\n\u003cp\u003e\nSeparate conventional motor overload\nprotection is not normally required.\n\u003c\/p\u003e\n\n\u003cp\u003e\nHowever, the electrical installation\nmust include the appropriate supply\nprotection, isolation and other\nprotective arrangements specified\nby Grundfos and applicable regulations.\n\u003c\/p\u003e\n\n\u003ch4\u003eCan the pump be installed in vertical or horizontal pipework?\u003c\/h4\u003e\n\n\u003cp\u003e\nYes, subject to the manufacturer's\ninstallation requirements.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe pump may be installed in suitable\nhorizontal or vertical pipework,\nbut the \u003cstrong\u003emotor shaft must\nremain horizontal\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe control unit orientation and\ninstallation clearances must also\ncomply with the relevant instructions.\n\u003c\/p\u003e\n\n\u003ch4\u003eAre threaded unions supplied?\u003c\/h4\u003e\n\n\u003cp\u003e\nThe pump features G 1 1\/2\"\nthreaded connections.\n\u003c\/p\u003e\n\n\u003cp\u003e\nUnless specifically shown or\nstated as included, mating unions,\ngaskets and other installation\naccessories should not be assumed\nto form part of the supply.\n\u003c\/p\u003e\n\n\u003cp\u003e\nPlease refer to the product photographs\nor contact us to confirm the\naccessories included.\n\u003c\/p\u003e\n\n\u003ch4\u003eIs this a new pump?\u003c\/h4\u003e\n\n\u003cp\u003e\nThis unit is supplied as\n\u003cstrong\u003enew\/unused surplus stock\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIt has not been installed or used,\nbut minor cosmetic marks may be\npresent from storage or handling.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe pump is inspected prior to\ndispatch and supplied with our\n\u003cstrong\u003e2-year guarantee\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eReplacement and Selection Guidance\u003c\/h3\u003e\n\n\u003cp\u003e\nBefore purchasing the MAGNA1 25-100 N\nas a replacement circulator, we\nrecommend checking:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eExisting pump manufacturer and model\u003c\/li\u003e\n\u003cli\u003eExisting manufacturer product number\u003c\/li\u003e\n\u003cli\u003eRequired flow rate in m³\/h or L\/s\u003c\/li\u003e\n\u003cli\u003eRequired operating head in metres or bar\u003c\/li\u003e\n\u003cli\u003eThreaded connection dimensions\u003c\/li\u003e\n\u003cli\u003ePort-to-port installation length\u003c\/li\u003e\n\u003cli\u003eElectrical supply requirements\u003c\/li\u003e\n\u003cli\u003eControl and monitoring connections\u003c\/li\u003e\n\u003cli\u003eRequired operating mode\u003c\/li\u003e\n\u003cli\u003eLiquid type and temperature\u003c\/li\u003e\n\u003cli\u003eMaximum system pressure\u003c\/li\u003e\n\u003cli\u003eRequired pump housing material\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThe MAGNA1 provides adjustable\npump performance within its\navailable hydraulic envelope.\n\u003c\/p\u003e\n\n\u003cp\u003e\nHowever, the required operating\nduty must fall within the\nmanufacturer's performance curve.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe correct control setting\nshould be selected during\ncommissioning according to\nthe requirements of the system.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor assistance comparing this\npump with an existing Grundfos,\nWilo, Lowara or other circulator,\nplease contact us with the\nexisting pump model and\nrequired flow and head.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eAbout Our Stock\u003c\/h3\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eStock reference: #4307\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\nWe specialise in supplying quality\nnew and unused surplus pumps,\ncirculators and industrial equipment.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis unit is inspected prior\nto dispatch and supplied with\nour \u003cstrong\u003e2-year guarantee\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eTechnical information and selection guidance:\u003c\/strong\u003e\nSpecifications are provided in good faith\nusing available manufacturer documentation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nPerformance figures, application descriptions\nand FAQ content are intended to assist with\nproduct identification and preliminary selection.\n\u003c\/p\u003e\n\n\u003cp\u003e\nActual operating performance depends on\nsystem resistance, pipework configuration,\nliquid characteristics, control settings\nand installation conditions.\n\u003c\/p\u003e\n\n\u003cp\u003e\nPlease consult the relevant Grundfos\ndocumentation and confirm suitability\nfor your application before purchasing\nor installing this equipment.\n\u003c\/p\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":1409043234826,"sku":"01499","price":662.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1218\/7894\/files\/IMG_6685.jpg?v=1751533906","url":"https:\/\/thepumpdealer.co.uk\/products\/grundfos-magna1-25-100-n-stainless-steel-99221226-4307","provider":"The Pump Dealer","version":"1.0","type":"link"}