{"title":"fothermo","description":"\u003cp\u003eSolar hybrid water heaters and solar immersion heaters from fothermo for heating water with photovoltaics. The manufacturer is fothermo System AG from Neu-Ulm, Germany. The units use the direct current of the PV modules directly, no inverter is required.\u003c\/p\u003e\n\u003ch2\u003efothermo products in our range\u003c\/h2\u003e\n\u003ch3\u003eSolar hybrid water heater 30 l and 80 l\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/en\/products\/fothermo-solar-hybridboiler-pv-direktanschluss\"\u003efothermo solar hybrid water heater\u003c\/a\u003e is connected directly to PV modules (0 to 550 W) and uses a 230 V backup heater with 1,500 W when there is little sun. It is available with 30 or 80 litres capacity, energy efficiency class C.\u003c\/p\u003e\n\u003ch3\u003e1 kW solar immersion heater ROD-1000\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/en\/products\/fothermo-1-kw-solarheizstab-rod-1000\"\u003eROD-1000 solar immersion heater\u003c\/a\u003e screws into an existing hot water or buffer tank with a G 1½ thread and runs directly on PV modules.\u003c\/p\u003e\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eOn request, our installation partners take care of mounting, installation and maintenance at your site. More tanks can be found under \u003ca href=\"\/en\/collections\/warmwasser-pufferspeicher\"\u003ehot water and buffer tanks\u003c\/a\u003e and \u003ca href=\"\/en\/collections\/solartechnik\"\u003esolar technology\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"fothermo-solar-hybridboiler-pv-direktanschluss","title":"fothermo solar hybrid boiler with direct PV connection and 230 V backup heating, 30 l or 80 l","description":"\u003cp\u003eThe fothermo solar hybrid boiler is a wall-mounted electric water heater that uses solar power directly for hot water. PV modules are connected to the boiler via MC4 solar connectors without an inverter and without a battery. An integrated MPP tracker controls the PV heating power continuously up to 550 W. If the solar yield is not sufficient, the 230 V backup heater with 1,500 W heats up as soon as the water falls below the minimum temperature set on the thermostat. Without a grid connection the boiler works on solar power alone. The boiler is available with 30 l or 80 l nominal volume.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eDirect PV connection without inverter and without battery, MC4 solar connectors\u003c\/li\u003e\u003cli\u003eContinuously variable PV heating power from 0 to 550 W via one MPP tracker\u003c\/li\u003e\u003cli\u003eAutomatic 230 V backup heating with 1,500 W, thermostat with rotary knob\u003c\/li\u003e\u003cli\u003eDigital display for water temperature, PV power and solar yield\u003c\/li\u003e\u003cli\u003eEnamelled steel tank with magnesium anode, polyurethane foam insulation\u003c\/li\u003e\u003cli\u003e30 l for small draw-off quantities, 80 l for regular showering\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eTechnical data according to the manufacturer\u003c\/h3\u003e\u003ctable\u003e\u003ctr\u003e\u003cth\u003e\u003c\/th\u003e\u003cth\u003e30 l\u003c\/th\u003e\u003cth\u003e80 l\u003c\/th\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eItem number\u003c\/th\u003e\u003ctd\u003ePVB-30-AC\u003c\/td\u003e\u003ctd\u003ePVB-80-AC\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eEAN\u003c\/th\u003e\u003ctd\u003e4260714970136\u003c\/td\u003e\u003ctd\u003e4260714970150\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eStorage volume\u003c\/th\u003e\u003ctd\u003e29 l\u003c\/td\u003e\u003ctd\u003e77 l\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMixed water 40 °C (calculated, tank 65 °C, cold water 15 °C)\u003c\/th\u003e\u003ctd\u003eapprox. 58 l\u003c\/td\u003e\u003ctd\u003eapprox. 154 l\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003ePV heating power\u003c\/th\u003e\u003ctd\u003e0 to 550 W, continuously variable\u003c\/td\u003e\u003ctd\u003e0 to 550 W, continuously variable\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eRecommended PV power\u003c\/th\u003e\u003ctd\u003e400 to 800 W\u003c\/td\u003e\u003ctd\u003e600 to 1,200 W\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMax. PV input power\u003c\/th\u003e\u003ctd\u003e2,000 Wp\u003c\/td\u003e\u003ctd\u003e2,000 Wp\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMax. PV open circuit voltage (Voc)\u003c\/th\u003e\u003ctd\u003e50 V DC\u003c\/td\u003e\u003ctd\u003e50 V DC\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eRecommended module voltage (Vmpp)\u003c\/th\u003e\u003ctd\u003e35 to 40 V\u003c\/td\u003e\u003ctd\u003e35 to 40 V\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMax. PV current\u003c\/th\u003e\u003ctd\u003e15.5 A, current limited\u003c\/td\u003e\u003ctd\u003e15.5 A, current limited\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003ePV wiring\u003c\/th\u003e\u003ctd\u003eparallel only\u003c\/td\u003e\u003ctd\u003eparallel only\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003ePV connection\u003c\/th\u003e\u003ctd\u003eMC4 solar connectors, 1 MPP tracker\u003c\/td\u003e\u003ctd\u003eMC4 solar connectors, 1 MPP tracker\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eAdjustable PV temperature\u003c\/th\u003e\u003ctd\u003e5 to 65 °C\u003c\/td\u003e\u003ctd\u003e5 to 65 °C\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eGrid backup heating\u003c\/th\u003e\u003ctd\u003e1,500 W, 230 V, plug\u003c\/td\u003e\u003ctd\u003e1,500 W, 230 V, plug\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eAdjustable backup temperature\u003c\/th\u003e\u003ctd\u003e10 to 75 °C\u003c\/td\u003e\u003ctd\u003e10 to 75 °C\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eNominal pressure\u003c\/th\u003e\u003ctd\u003e0.7 MPa (7 bar)\u003c\/td\u003e\u003ctd\u003e0.7 MPa (7 bar)\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eWater connection\u003c\/th\u003e\u003ctd\u003eG ½ male thread\u003c\/td\u003e\u003ctd\u003eG ½ male thread\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eTank\u003c\/th\u003e\u003ctd\u003eenamelled steel, magnesium anode\u003c\/td\u003e\u003ctd\u003eenamelled steel, magnesium anode\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eInsulation\u003c\/th\u003e\u003ctd\u003epolyurethane foam\u003c\/td\u003e\u003ctd\u003epolyurethane foam\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eTemperature loss\u003c\/th\u003e\u003ctd\u003eapprox. 0.42 °C\/h\u003c\/td\u003e\u003ctd\u003eapprox. 0.25 °C\/h\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eProtection class\u003c\/th\u003e\u003ctd\u003eIP24\u003c\/td\u003e\u003ctd\u003eIP24\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eEnergy efficiency class (water heating)\u003c\/th\u003e\u003ctd\u003eC, load profile S\u003c\/td\u003e\u003ctd\u003eC, load profile M\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eAnnual electricity consumption\u003c\/th\u003e\u003ctd\u003e548 kWh\u003c\/td\u003e\u003ctd\u003e1,366 kWh\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eDimensions L × W × H\u003c\/th\u003e\u003ctd\u003e400 × 400 × 600 mm\u003c\/td\u003e\u003ctd\u003e470 × 480 × 900 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eEmpty weight \/ filled (calculated)\u003c\/th\u003e\u003ctd\u003eapprox. 15 kg \/ approx. 44 kg\u003c\/td\u003e\u003ctd\u003eapprox. 25 kg \/ approx. 102 kg\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMounting\u003c\/th\u003e\u003ctd\u003ewall mounting, vertical, frost-free\u003c\/td\u003e\u003ctd\u003ewall mounting, vertical, frost-free\u003c\/td\u003e\u003c\/tr\u003e\u003c\/table\u003e\u003ch3\u003eScope of delivery\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSolar hybrid boiler PVB-30-AC or PVB-80-AC\u003c\/li\u003e\u003cli\u003eSafety and quick guide\u003c\/li\u003e\u003cli\u003eNon-return and pressure relief valve\u003c\/li\u003e\u003cli\u003ePower cable and PV warning label\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eAlso required\u003c\/h3\u003e\u003cul\u003e\u003cli\u003ePV modules with mounting material, solar cables and parallel connectors if needed\u003c\/li\u003e\u003cli\u003eWall and water connection material, valve drain and pressure reducer if required\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eConnect PV modules in parallel only. The open circuit voltage must not exceed 50 V, even in cold weather.\u003c\/li\u003e\u003cli\u003eWall mounting vertical and frost-free, check the load-bearing capacity of the wall (filled approx. 44 kg or approx. 102 kg).\u003c\/li\u003e\u003cli\u003eProvide a safety valve with drain. Fill the boiler completely with water before connecting it electrically.\u003c\/li\u003e\u003cli\u003eHeating times and mixed water quantities are guide values of the manufacturer and depend on solar power, environment and water draw-off.\u003c\/li\u003e\u003cli\u003eTechnical data according to the manufacturer fothermo. The operating instructions are authoritative.\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Mounting, water and electrical connection by a qualified installer. On request our experienced installation partners take care of mounting, installation and maintenance at the customer site.\u003c\/p\u003e\u003ch3\u003eDownloads\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0977\/1247\/2405\/files\/fothermo-solar-hybridboiler-datenblatt.pdf?v=1793209937\" target=\"_blank\" rel=\"noopener\"\u003eData sheet solar hybrid boiler (PDF, German)\u003c\/a\u003e\u003c\/li\u003e\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0977\/1247\/2405\/files\/fothermo-solar-hybridboiler-bedienungsanleitung.pdf?v=1793209943\" target=\"_blank\" rel=\"noopener\"\u003eOperating instructions solar hybrid boiler (PDF, German)\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e","brand":"fothermo","offers":[{"title":"30 l","offer_id":55565150847317,"sku":"PVB-30-AC","price":449.0,"currency_code":"EUR","in_stock":true},{"title":"80 l","offer_id":55565150880085,"sku":"PVB-80-AC","price":529.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/1247\/2405\/files\/fothermo-solar-hybridboiler-pv-direktanschluss-1.png?v=1793209952"},{"product_id":"fothermo-1-kw-solarheizstab-rod-1000","title":"fothermo 1 kW solar heating rod ROD-1000, direct PV connection without inverter, G 1½","description":"\u003cp\u003eThe fothermo 1 kW solar heating rod ROD-1000 is screwed into a suitable hot water tank with a G 1½ connection and heats the water with direct current straight from PV modules, without an inverter and without a 230 V grid connection for heating operation. An integrated MPP tracker controls the heating power continuously up to 1,000 W. Water temperature and power are shown on the digital display. The solar heating rod relieves the existing gas, oil or pellet heating or heat pump in domestic hot water preparation; when the sun is not shining, the existing heating system takes over.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eRetrofit into existing tanks with G 1½ socket (6\/4 inch), immersion depth 295 mm\u003c\/li\u003e\u003cli\u003eContinuously variable heating power from 0 to 1,000 W, recommended for 1,500 to 2,500 Wp PV power\u003c\/li\u003e\u003cli\u003eDigital display for power and temperature, water temperature adjustable from 5 to 65 °C\u003c\/li\u003e\u003cli\u003eSurplus output: after reaching the set maximum temperature it switches over to a further solar heating rod or a compatible micro PV inverter\u003c\/li\u003e\u003cli\u003eSupplied with two pairs of solar connectors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eTechnical data according to the manufacturer\u003c\/h3\u003e\u003ctable\u003e\u003ctr\u003e\u003cth\u003eItem number\u003c\/th\u003e\u003ctd\u003eROD-1000\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eEAN\u003c\/th\u003e\u003ctd\u003e4260714970273\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eHeating power\u003c\/th\u003e\u003ctd\u003e0 to 1,000 W, continuously controlled\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMax. open circuit voltage (Voc)\u003c\/th\u003e\u003ctd\u003e50 V DC\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMin. module voltage (Vmpp)\u003c\/th\u003e\u003ctd\u003e36 V (max. 800 W heating power)\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eRecommended module voltage (Vmpp)\u003c\/th\u003e\u003ctd\u003e38 to 43 V (for 1,000 W heating power)\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMax. input current\u003c\/th\u003e\u003ctd\u003e23 A DC, automatic current limitation\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMax. PV input power\u003c\/th\u003e\u003ctd\u003e3,000 Wp\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eRecommended PV input power\u003c\/th\u003e\u003ctd\u003e1,500 to 2,500 Wp\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003ePV wiring\u003c\/th\u003e\u003ctd\u003eparallel connection, no series connection\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eDC input \/ MPP tracker\u003c\/th\u003e\u003ctd\u003e1 \/ 1\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eWater temperature range\u003c\/th\u003e\u003ctd\u003e5 to 65 °C, max. 85 °C in lime-free water\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eSurplus output\u003c\/th\u003e\u003ctd\u003emax. 1,000 W, max. 23 A, 0 to 50 V depending on module voltage\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eScrew-in thread\u003c\/th\u003e\u003ctd\u003eG 1½ (6\/4 inch), wrench size 60\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eRod length \/ immersion depth\u003c\/th\u003e\u003ctd\u003e315 mm \/ 295 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eUnheated length\u003c\/th\u003e\u003ctd\u003e50 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eMounting position\u003c\/th\u003e\u003ctd\u003ehorizontal\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eDimensions L × H × W\u003c\/th\u003e\u003ctd\u003e468 × 140 × 154 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eProtection class\u003c\/th\u003e\u003ctd\u003eIP20\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eOperating and storage temperature\u003c\/th\u003e\u003ctd\u003e-10 to +35 °C\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eWeight\u003c\/th\u003e\u003ctd\u003e0.9 kg\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eCountry of origin\u003c\/th\u003e\u003ctd\u003eGermany\u003c\/td\u003e\u003c\/tr\u003e\u003c\/table\u003e\u003ch3\u003eScope of delivery\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × solar heating rod ROD-1000\u003c\/li\u003e\u003cli\u003eSafety and quick guide\u003c\/li\u003e\u003cli\u003eQuick installation guide\u003c\/li\u003e\u003cli\u003eCrimping instructions and PV warning label\u003c\/li\u003e\u003cli\u003e2 × pairs of solar connectors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eAlso required\u003c\/h3\u003e\u003cul\u003e\u003cli\u003ePV modules, suitable hot water tank with G 1½ connection\u003c\/li\u003e\u003cli\u003eSolar cables and parallel connectors\u003c\/li\u003e\u003cli\u003eOptional devices for surplus use separately\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eThe achievable heating power depends on the MPP voltage of the modules. For 1,000 W, modules with 38 to 43 V Vmpp are required.\u003c\/li\u003e\u003cli\u003eConnect PV modules in parallel only, max. 50 V open circuit voltage. Extension at least 6 mm², max. 25 m distance according to the instructions.\u003c\/li\u003e\u003cli\u003eCheck installation space, G 1½ connection and immersion depth on the tank beforehand. The heating rod is installed horizontally.\u003c\/li\u003e\u003cli\u003eFill the tank completely before connecting the PV modules, do not operate the heating rod dry. Ensure earthing and protective devices.\u003c\/li\u003e\u003cli\u003eDuring heating, PV power above the usable heating power is curtailed. The PV power is not split between heating rod and inverter at the same time. For feed-in, only use micro PV inverters from the manufacturer's whitelist.\u003c\/li\u003e\u003cli\u003eTechnical data according to the manufacturer fothermo. The operating instructions are authoritative.\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Mounting, water and electrical connection by a qualified installer. On request our experienced installation partners take care of mounting, installation and maintenance at the customer site.\u003c\/p\u003e\u003ch3\u003eDownloads\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0977\/1247\/2405\/files\/fothermo-1-kw-solarheizstab-rod-1000-datenblatt.pdf?v=1793209959\" target=\"_blank\" rel=\"noopener\"\u003eData sheet 1 kW solar heating rod ROD-1000 (PDF, German)\u003c\/a\u003e\u003c\/li\u003e\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0977\/1247\/2405\/files\/fothermo-1-kw-solarheizstab-rod-1000-bedienungsanleitung.pdf?v=1793209964\" target=\"_blank\" rel=\"noopener\"\u003eOperating instructions 1 kW solar heating rod (PDF, German)\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e","brand":"fothermo","offers":[{"title":"Default Title","offer_id":55565152190805,"sku":"ROD-1000","price":499.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/1247\/2405\/files\/fothermo-1-kw-solarheizstab-rod-1000-1.png?v=1793209975"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/1247\/2405\/collections\/fothermo-logo.png?v=1793361277","url":"https:\/\/wohnungstechnik.de\/en\/collections\/fothermo.oembed","provider":"Wohnungstechnik.de","version":"1.0","type":"link"}