{"product_id":"magnetic-nf-plus-estacion-rellenado-agua-desmineralizada","title":"magnetic NF plus refill station for demineralised heating water, VDI 2035","description":"\u003ch2\u003ePermanent refill station that tops up your heating system with demineralised water to VDI 2035\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003emagnetic NF plus\u003c\/strong\u003e fits in the filling line of the boiler or heat pump and supplies \u003cstrong\u003edemineralised water at every top-up\u003c\/strong\u003e, with no mains power. Q-Tech integrates it into the pre-assembled plant room together with the backflow preventer, the water meter and the shut-off valves. Price on request: message us on \u003ca href=\"https:\/\/wa.me\/qtechhouses\" target=\"_blank\" rel=\"noopener\"\u003eWhatsApp\u003c\/a\u003e and we will send you a quote.\u003c\/p\u003e\u003ch3\u003eSummary\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\u003cth\u003eType\u003c\/th\u003e\u003ctd\u003eRefill station for demineralised water with mixed bed resin\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eBrand and model\u003c\/th\u003e\u003ctd\u003emagnetic NF plus: NF 2, NF 6, NF 12 and NF 25 plus\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eUse\u003c\/th\u003e\u003ctd\u003eTopping up closed heating and cooling circuits to VDI 2035\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eCapacity at 20 °dH\u003c\/th\u003e\u003ctd\u003e225, 500, 1,200 or 2,400 litres depending on the model\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMaximum flow rate\u003c\/th\u003e\u003ctd\u003e300 to 1,500 litres per hour at 3 to 4 bar inlet pressure\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eConnection\u003c\/th\u003e\u003ctd\u003eTwo G ¾ male threads (DN 20)\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003ePower supply\u003c\/th\u003e\u003ctd\u003eNo mains power; the meter runs on three AAA batteries\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eQ-Tech installation\u003c\/th\u003e\u003ctd\u003eAssembled and tested in the \u003ca href=\"\/en-en\/pages\/pre-montaje-avanzado\"\u003epre-assembled plant room\u003c\/a\u003e or connected on-site by an Expert Technician\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhat is the magnetic NF plus?\u003c\/h3\u003e\u003cp\u003eThe magnetic NF plus from magnetic is a permanent refill station for closed heating circuits that removes lime and salts from mains water with mixed bed resin. The water flows through the vessel and leaves demineralised. It mounts on the wall or stands on the floor, between the water supply and the system.\u003c\/p\u003e\u003ch3\u003eConductivity meter and water counter\u003c\/h3\u003e\u003cp\u003eA battery-powered meter shows conductivity in µS per cm, flow rate and total litres. You set a limit and the meter checks the water every 20 litres: \u003cstrong\u003eit warns when the resin is exhausted\u003c\/strong\u003e with a red light and an audible alarm. The resin is changed on site and the used resin goes in household waste, according to magnetic.\u003c\/p\u003e\u003ch3\u003eWhat problem does it solve?\u003c\/h3\u003e\u003cp\u003eA system with a buffer tank and underfloor heating easily exceeds \u003cstrong\u003emore than 40 litres per kW\u003c\/strong\u003e, and in that case VDI 2035 calls for demineralised water. Every top-up with mains water adds lime, salts and oxygen. Mains water in Málaga city is fairly soft, about 10 °fH according to EMASA (2021), but it has hundreds of µS per cm and leaves the system in salt-containing operation, the most demanding on oxygen.\u003c\/p\u003e\u003cp\u003eTopping up untreated water builds up lime in the heat exchanger and speeds up corrosion in pumps, valves and radiators. magnetic warns that topping up with mains water can void the heat generator warranty and worsen heat transfer. Many heat pump and boiler manufacturers refer to VDI 2035 in their manuals.\u003c\/p\u003e\u003ch3\u003eTechnical data\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\u003cth\u003eTreatment\u003c\/th\u003e\u003ctd\u003eDemineralisation by ion exchange with premium mixed bed resin\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMaximum filling temperature\u003c\/th\u003e\u003ctd\u003e60 °C\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMaximum pressure\u003c\/th\u003e\u003ctd\u003e6 bar\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eConnections\u003c\/th\u003e\u003ctd\u003e2 G ¾ male threads (DN 20)\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMeter\u003c\/th\u003e\u003ctd\u003eConductivity in µS per cm or ppm, flow rate and total litres, with adjustable limit and visual and audible alarm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMeter power supply\u003c\/th\u003e\u003ctd\u003e3 AAA alkaline batteries\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eVessel NF 2 and NF 6 plus\u003c\/th\u003e\u003ctd\u003eFibre-reinforced plastic, screw-off, wall bracket included\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eVessel NF 12 and NF 25 plus\u003c\/th\u003e\u003ctd\u003eStainless steel with clamp lid and frost-protection drain, 170 mm diameter\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eOutlet\u003c\/th\u003e\u003ctd\u003eTwin shut-off valves and safety strainer that holds back the resin\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eModels and data by variant\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\u003cth\u003eModel\u003c\/th\u003e\u003cth\u003eReference\u003c\/th\u003e\u003cth\u003eResin\u003c\/th\u003e\u003cth\u003eCapacity at 1 °dH\u003c\/th\u003e\u003cth\u003eCapacity at 20 °dH\u003c\/th\u003e\u003cth\u003eMaximum flow rate\u003c\/th\u003e\u003cth\u003eHeight\u003c\/th\u003e\u003cth\u003eOperating weight\u003c\/th\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eNF 2 plus\u003c\/th\u003e\u003ctd\u003e888 301\u003c\/td\u003e\u003ctd\u003e2.7 l\u003c\/td\u003e\u003ctd\u003e4,500 l\u003c\/td\u003e\u003ctd\u003e225 l\u003c\/td\u003e\u003ctd\u003e300 l per hour\u003c\/td\u003e\u003ctd\u003e460 mm\u003c\/td\u003e\u003ctd\u003e6.6 kg\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eNF 6 plus\u003c\/th\u003e\u003ctd\u003e888 305\u003c\/td\u003e\u003ctd\u003e6.5 l\u003c\/td\u003e\u003ctd\u003e10,000 l\u003c\/td\u003e\u003ctd\u003e500 l\u003c\/td\u003e\u003ctd\u003e420 l per hour\u003c\/td\u003e\u003ctd\u003e560 mm\u003c\/td\u003e\u003ctd\u003e9.4 kg\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eNF 12 plus\u003c\/th\u003e\u003ctd\u003e888 311\u003c\/td\u003e\u003ctd\u003e12.5 l\u003c\/td\u003e\u003ctd\u003e24,000 l\u003c\/td\u003e\u003ctd\u003e1,200 l\u003c\/td\u003e\u003ctd\u003e1,000 l per hour\u003c\/td\u003e\u003ctd\u003e1,022 mm\u003c\/td\u003e\u003ctd\u003e23 kg\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eNF 25 plus\u003c\/th\u003e\u003ctd\u003e888 321\u003c\/td\u003e\u003ctd\u003e25 l\u003c\/td\u003e\u003ctd\u003e48,000 l\u003c\/td\u003e\u003ctd\u003e2,400 l\u003c\/td\u003e\u003ctd\u003e1,500 l per hour\u003c\/td\u003e\u003ctd\u003e1,490 mm\u003c\/td\u003e\u003ctd\u003e53.5 kg\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eData from the magnetic technical data sheets (08-2021 and 04-2022). Up to \u003cstrong\u003e2,400 litres at 20 °dH\u003c\/strong\u003e per charge with the NF 25 plus.\u003c\/p\u003e\u003ch3\u003eCompatibility and limits\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eFor closed heating and cooling circuits only; the treated water is not suitable for drinking.\u003c\/li\u003e\u003cli\u003eA permanent connection to the drinking water network requires a \u003cstrong\u003eBA backflow preventer to EN 1717\u003c\/strong\u003e upstream of the station; magnetic supplies it as a separate accessory.\u003c\/li\u003e\u003cli\u003eWith automatic filling by solenoid valve, magnetic recommends a water hammer arrester: a sudden closure exceeds 6 bar.\u003c\/li\u003e\u003cli\u003eActual capacity drops if the mains water contains sulphates, nitrates or chlorides, because the resin removes them too.\u003c\/li\u003e\u003cli\u003eInlet temperature up to 60 °C and pressure up to 6 bar.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eWhen this product is not the right choice\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\u003cth\u003eSituation\u003c\/th\u003e\u003cth\u003eWhat to choose\u003c\/th\u003e\u003cth\u003eDeciding factor\u003c\/th\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eOccasional small top-ups\u003c\/th\u003e\u003ctd\u003emagnetic demineralisation cartridge 300, disposable with colour indicator\u003c\/td\u003e\u003ctd\u003e300 litres at 10 °dH per cartridge\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eFirst filling of a large system\u003c\/th\u003e\u003ctd\u003eMobile filling station or filling service with demineralised water\u003c\/td\u003e\u003ctd\u003eThe NF plus is designed for topping up, not for filling in one go\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eOxygen, sludge or low pH with the water already in the system\u003c\/th\u003e\u003ctd\u003emagnetic HWR plus heating water regulator\u003c\/td\u003e\u003ctd\u003eDegasses, filters sludge and stabilises pH in operation\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhich model do I need?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt depends on the litres you top up each year and on water hardness. magnetic suggests the NF 2 plus for up to 250 litres a year, the NF 6 up to 500, the NF 12 up to 2,500 and the NF 25 up to 10,000. Divide the capacity at 1 °dH by the hardness of your water to get the litres per charge.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the price?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOn request. Message us on \u003ca href=\"https:\/\/wa.me\/qtechhouses\" target=\"_blank\" rel=\"noopener\"\u003eWhatsApp\u003c\/a\u003e with the model and we will send you a quote.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the delivery time?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMade to order: we will confirm the lead time before preparing your order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a backflow preventer?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, for a permanent connection to the drinking water network. EN 1717 requires a type BA backflow preventer upstream of the station, sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know the resin is exhausted?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe meter tells you. When conductivity exceeds the limit you set, it warns with a red light and an audible alarm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install it myself?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is not advisable. A professional makes the connection to the mains and to the circuit, and magnetic states that permanent unsupervised use with a filling hose is not permitted.\u003c\/p\u003e\u003ch3\u003eQ-Tech installation and support\u003c\/h3\u003e\u003cp\u003eIn a pre-assembled plant room, Q-Tech fits the NF plus with the BA backflow preventer, the meter and the valves, tests it in its workshop and the station \u003cstrong\u003earrives tested and ready to connect\u003c\/strong\u003e. More information on \u003ca href=\"\/en-en\/pages\/pre-montaje-avanzado\"\u003ePre-Montaje Avanzado\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eIn an existing system, Q-Tech first carries out a verification visit and then connects it with the \u003ca href=\"\/en-en\/products\/tecnico-experto-in-situ-horas\"\u003eon-site hourly Expert Technician\u003c\/a\u003e. To choose the model, book a \u003ca href=\"\/en-en\/products\/expert-technician-remote-technical-call\"\u003etechnical call\u003c\/a\u003e. The guideline values are in our article \u003ca href=\"\/en-en\/blogs\/news\/vdi-2035-agua-aerotermia-calefaccion\"\u003eVDI 2035: water quality in heat pump and heating systems\u003c\/a\u003e and in the \u003ca href=\"\/en-en\/pages\/calculadora-vdi-2035\"\u003eVDI 2035 calculator\u003c\/a\u003e.\u003c\/p\u003e\u003cdiv class=\"qt-calc\" style=\"display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin:1.6em 0;\"\u003e\u003cdiv style=\"flex:1 1 280px;padding:16px 18px;border:1px solid rgba(27,34,48,0.14);border-radius:12px;background:rgba(27,34,48,0.03);\"\u003e\u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eQ-Tech VDI 2035 calculator\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"margin:0 0 8px;\"\u003eCheck whether the water in your heating system meets the VDI 2035 guideline (Part 1, 2021). Enter the output, the system volume in litres and the hardness and conductivity of your mains water: the calculator gives you the verdict and the three key figures for filling or topping up the circuit. If you need it, we will send you the full report.\u003c\/p\u003e\u003cp style=\"margin:0;font-size:0.85em;opacity:0.75;\"\u003eGuidance only: check the manufacturer's requirements.\u003c\/p\u003e\u003c\/div\u003e\u003ca href=\"\/en-en\/pages\/calculadora-vdi-2035\" title=\"Open the VDI 2035 calculator\" style=\"flex:1 1 280px;display:block;border-radius:12px;overflow:hidden;box-shadow:0 4px 14px rgba(27,34,48,0.12);\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0015\/4592\/8792\/files\/vdi2035-calculadora-banner-qtech-en.webp?v=1794073125\" alt=\"VDI 2035 calculator: check whether your system water meets the guideline. Open the calculator\" width=\"2400\" height=\"1200\" loading=\"lazy\" style=\"display:block;width:100%;height:auto;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\u003ch3\u003eDocumentation\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/www.magnetic-online.de\/fileadmin\/public\/images\/heizungswasser\/nachfuellstationen\/BA_s\/ENG_BA_Nachfuellstation_plus_web.pdf\" target=\"_blank\" rel=\"noopener\"\u003eNF plus refill station manual\u003c\/a\u003e\u003c\/li\u003e\u003cli\u003e\u003ca href=\"https:\/\/www.magnetic-online.de\/fileadmin\/public\/images\/heizungswasser\/nachfuellstationen\/TD_s\/ENG_Technical_Data_Sheet_Refill_Station_2_plus.pdf\" target=\"_blank\" rel=\"noopener\"\u003eNF 2 plus technical data sheet\u003c\/a\u003e\u003c\/li\u003e\u003cli\u003e\u003ca href=\"https:\/\/www.magnetic-online.de\/fileadmin\/public\/images\/heizungswasser\/nachfuellstationen\/TD_s\/ENG_Technical_Data_Sheet_Refill_Station_6_plus.pdf\" target=\"_blank\" rel=\"noopener\"\u003eNF 6 plus technical data sheet\u003c\/a\u003e\u003c\/li\u003e\u003cli\u003e\u003ca href=\"https:\/\/www.magnetic-online.de\/fileadmin\/public\/images\/heizungswasser\/nachfuellstationen\/TD_s\/ENG_Technical_Data_Sheet_Refill_Station_12_plus.pdf\" target=\"_blank\" rel=\"noopener\"\u003eNF 12 plus technical data sheet\u003c\/a\u003e\u003c\/li\u003e\u003cli\u003e\u003ca href=\"https:\/\/www.magnetic-online.de\/fileadmin\/public\/images\/heizungswasser\/nachfuellstationen\/TD_s\/ENG_Technical_Data_Sheet_Refill_Station_25_plus.pdf\" target=\"_blank\" rel=\"noopener\"\u003eNF 25 plus technical data sheet\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003cp class=\"qt-nota-stock\"\u003e\u003cstrong\u003eAvailability and lead times:\u003c\/strong\u003e made to order. We will confirm the lead time before preparing your order.\u003c\/p\u003e","brand":"magnetic","offers":[{"title":"NF 2 plus","offer_id":59063616143704,"sku":"MAG-888301","price":0.0,"currency_code":"EUR","in_stock":false},{"title":"NF 6 plus","offer_id":59063616176472,"sku":"MAG-888305","price":0.0,"currency_code":"EUR","in_stock":false},{"title":"NF 12 plus","offer_id":59063616209240,"sku":"MAG-888311","price":0.0,"currency_code":"EUR","in_stock":false},{"title":"NF 25 plus","offer_id":59063616242008,"sku":"MAG-888321","price":0.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/4592\/8792\/files\/magnetic-nf-2-plus-estacion-rellenado-v4.webp?v=1794081264","url":"https:\/\/q-tech.es\/en-int\/products\/magnetic-nf-plus-demineralised-water-refill-station","provider":"Q-Tech ® ","version":"1.0","type":"link"}