{"title":"Hygiene storage","description":"\u003ch2\u003eHygienic storage tanks for heating systems – efficient heat storage and hygienic hot water\u003c\/h2\u003e  \u003ch3\u003eOptimal heat storage for modern heating systems\u003c\/h3\u003e  \u003cp\u003eHygienic storage tanks are a key component in modern heating systems and serve to efficiently store heat energy and release it as needed. Unlike conventional storage tanks, they are characterized by their hygienic hot water preparation. The water in the storage tank is not used directly for hot water, but rather heats drinking water in a separate heat exchanger. This ensures high water quality by preventing stagnant water in the storage system. \u003ca href=\"\/en-pt\/pages\/hygienespeicher\" target=\"_blank\" title=\"Hygienespeicher\" rel=\"noopener\" aria-label=\"Hygienespeicher\"\u003e\u003cstrong\u003efurther information\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"hygienespeicher-mit-1-warmetauscher","title":"Fresh water hygiene combination tank FK with stainless steel corrugated pipe","description":"\u003cp data-end=\"756\" data-start=\"340\"\u003eThe \u003cstrong data-end=\"385\" data-start=\"344\"\u003eFresh water hygiene combination storage tank FK\u003c\/strong\u003e This system combines a heating buffer storage tank and hygienic domestic hot water heating. Hot water is supplied via an integrated stainless steel corrugated pipe using a flow-through principle, thus preventing stagnant drinking water. The storage tank is universally applicable and designed for operation with various heat generators.\u003c\/p\u003e  \u003ch3 data-end=\"778\" data-start=\"763\"\u003eHighlights\u003c\/h3\u003e  \u003cul data-end=\"1154\" data-start=\"779\"\u003e  \u003cli data-end=\"836\" data-start=\"779\"\u003e  \u003cp data-end=\"836\" data-start=\"781\"\u003eHygienic drinking water heating using the flow-through principle\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"880\" data-start=\"837\"\u003e  \u003cp data-end=\"880\" data-start=\"839\"\u003eStainless steel corrugated pipe made of material 1.4404\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"929\" data-start=\"881\"\u003e  \u003cp data-end=\"929\" data-start=\"883\"\u003eStorage container made of high-quality steel S235JRG2\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"997\" data-start=\"930\"\u003e  \u003cp data-end=\"997\" data-start=\"932\"\u003eCan be combined with solar, heat pump, wood, gas \u0026amp; Pellet boilers\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1048\" data-start=\"998\"\u003e  \u003cp data-end=\"1048\" data-start=\"1000\"\u003ePreparation for electric heating element is present.\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1154\" data-start=\"1049\"\u003e  \u003cp data-end=\"1154\" data-start=\"1051\"\u003eVarious insulation options (EPS\/rigid PU foam) are available.\u003c\/p\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003chr data-end=\"1159\" data-start=\"1156\"\u003e  \u003ch3 data-end=\"1183\" data-start=\"1161\"\u003eAreas of application\u003c\/h3\u003e  \u003ch4 data-end=\"1204\" data-start=\"1185\"\u003e\u003cstrong data-end=\"1202\" data-start=\"1185\"\u003eSuitable for:\u003c\/strong\u003e\u003c\/h4\u003e  \u003cul data-end=\"1358\" data-start=\"1205\"\u003e  \u003cli data-end=\"1236\" data-start=\"1205\"\u003e  \u003cp data-end=\"1236\" data-start=\"1207\"\u003eSingle-family and multi-family homes\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1272\" data-start=\"1237\"\u003e  \u003cp data-end=\"1272\" data-start=\"1239\"\u003eHeating system modernization \u0026amp; New building\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1317\" data-start=\"1273\"\u003e  \u003cp data-end=\"1317\" data-start=\"1275\"\u003eSystems with solar thermal energy or heat pump\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1358\" data-start=\"1318\"\u003e  \u003cp data-end=\"1358\" data-start=\"1320\"\u003eskilled trades \u0026amp; Installation companies\u003c\/p\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003ch4 data-end=\"1385\" data-start=\"1360\"\u003e\u003cstrong data-end=\"1383\" data-start=\"1360\"\u003eNot suitable for:\u003c\/strong\u003e\u003c\/h4\u003e  \u003cul data-end=\"1476\" data-start=\"1386\"\u003e  \u003cli data-end=\"1438\" data-start=\"1386\"\u003e  \u003cp data-end=\"1438\" data-start=\"1388\"\u003ePure drinking water storage tanks without heating connection\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1476\" data-start=\"1439\"\u003e  \u003cp data-end=\"1476\" data-start=\"1441\"\u003eSystems without buffer storage requirements\u003c\/p\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003chr data-end=\"1481\" data-start=\"1478\"\u003e  \u003ch3 data-end=\"1524\" data-start=\"1483\"\u003eTechnical data \u003c\/h3\u003e  \u003cul data-end=\"1896\" data-start=\"1525\"\u003e  \u003cli data-end=\"1573\" data-start=\"1525\"\u003e  \u003cp data-end=\"1573\" data-start=\"1527\"\u003eStorage capacity: 200–2000 liters (depending on type)\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1632\" data-start=\"1574\"\u003e  \u003cp data-end=\"1632\" data-start=\"1576\"\u003eDrinking water heat exchanger: Stainless steel corrugated pipe 1.4404, max. 10 bar\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1671\" data-start=\"1633\"\u003e  \u003cp data-end=\"1671\" data-start=\"1635\"\u003eOperating pressure of storage tank: max. 5 bar\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1706\" data-start=\"1672\"\u003e  \u003cp data-end=\"1706\" data-start=\"1674\"\u003eMaximum operating temperature: 95 °C\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1758\" data-start=\"1707\"\u003e  \u003cp data-end=\"1758\" data-start=\"1709\"\u003eConnection for electric heating element: 1½\u0026quot; internal thread (depending on size)\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1896\" data-start=\"1759\"\u003e  \u003cp data-end=\"1774\" data-start=\"1761\"\u003eInsulation:\u003c\/p\u003e  \u003cul data-end=\"1896\" data-start=\"1777\"\u003e  \u003cli data-end=\"1811\" data-start=\"1777\"\u003e  \u003cp data-end=\"1811\" data-start=\"1779\"\u003eEPS 100 mm (efficiency class C)\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1848\" data-start=\"1814\"\u003e  \u003cp data-end=\"1848\" data-start=\"1816\"\u003eEPS 130 mm (Efficiency class B)\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1896\" data-start=\"1851\"\u003e  \u003cp data-end=\"1896\" data-start=\"1853\"\u003ePU rigid foam 150 mm (efficiency class A)\u003c\/p\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003chr data-end=\"1901\" data-start=\"1898\"\u003e  \u003ch3 data-end=\"1920\" data-start=\"1903\"\u003eScope of delivery\u003c\/h3\u003e  \u003cul data-end=\"2052\" data-start=\"1921\"\u003e  \u003cli data-end=\"1962\" data-start=\"1921\"\u003e  \u003cp data-end=\"1962\" data-start=\"1923\"\u003eFresh water hygiene combination storage tank FK\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"1998\" data-start=\"1963\"\u003e  \u003cp data-end=\"1998\" data-start=\"1965\"\u003eIntegrated stainless steel corrugated pipe\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"2022\" data-start=\"1999\"\u003e  \u003cp data-end=\"2022\" data-start=\"2001\"\u003eSelected insulation\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-end=\"2052\" data-start=\"2023\"\u003e  \u003cp data-end=\"2052\" data-start=\"2025\"\u003eReady for assembly\u003c\/p\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003chr data-end=\"2057\" data-start=\"2054\"\u003e  \u003ch3 data-end=\"2069\" data-start=\"2059\"\u003eConclusion\u003c\/h3\u003e  \u003cp data-end=\"2365\" data-start=\"2070\"\u003eThe FK combination storage tank is a space-saving, hygienic solution for modern heating systems. It offers high flexibility for private homeowners as well as professional installers and meets current requirements for efficiency and drinking water hygiene.\u003c\/p\u003e","brand":"Gema GmbH","offers":[{"title":"200 liters \/ 100 mm","offer_id":55327151456604,"sku":"FK200+SISOC","price":1004.0,"currency_code":"EUR","in_stock":true},{"title":"200 liters \/ 130 mm","offer_id":55327151489372,"sku":"FK200+SISOB","price":1187.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 100 mm","offer_id":55327151554908,"sku":"FK300+SISOC","price":1104.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 130 mm","offer_id":55327151587676,"sku":"FK300+SISOB","price":1287.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 100 mm","offer_id":55327151653212,"sku":"FK400+SISOC","price":1204.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 130 mm","offer_id":55327151685980,"sku":"FK400+SISOB","price":1387.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 100 mm","offer_id":55327151751516,"sku":"FK600+SISOC","price":1304.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 130 mm","offer_id":55327151784284,"sku":"FK600+SISOB","price":1487.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 150 mm","offer_id":55327151817052,"sku":"FK600+SISOA","price":1656.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 100 mm","offer_id":55327151849820,"sku":"FK800+SISOC","price":1404.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 130 mm","offer_id":55327151882588,"sku":"FK800+SISOB","price":1587.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 150 mm","offer_id":55327151915356,"sku":"FK800+SISOA","price":1756.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 100 mm","offer_id":55327151948124,"sku":"FK1000+SISOC","price":1504.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 130 mm","offer_id":55327151980892,"sku":"FK1000+SISOB","price":1687.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 150 mm","offer_id":55327152013660,"sku":"FK1000+SISOA","price":1856.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 100 mm","offer_id":55327152046428,"sku":"FK1500+SISOC","price":2004.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 130 mm","offer_id":55327152079196,"sku":"FK1500+SISOB","price":2187.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 100 mm","offer_id":55327152144732,"sku":"FK2000+SISOC","price":2404.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 130 mm","offer_id":55327152177500,"sku":"FK2000+SISOB","price":2587.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/schichten-pufferspeicher-mit-2-warmetauscher-5468097.webp?v=1770692066"},{"product_id":"hygienespeicher-mit-2-warmetauschern","title":"Hygienic storage with 2 heat exchangers","description":"\u003ch2\u003eFresh water – FKS hygienic combination storage tank: Legionella-safe drinking water heating\u003c\/h2\u003e  \u003ch3\u003eProduct overview\u003c\/h3\u003e  \u003cp\u003eThe FKS fresh water combination storage tank offers legionella-safe domestic hot water heating thanks to an integrated stainless steel corrugated pipe and combines the advantages of a boiler and an instantaneous water heater. It is suitable for operation with various heat generators such as solar thermal, oil\/gas, wood or pellet boilers, as well as heat pumps, and simultaneously allows for the supply of heating circuits.\u003c\/p\u003e  \u003ch3\u003eFunction and hygiene concept\u003c\/h3\u003e  \u003cp\u003eThe stainless steel corrugated pipe wound inside the storage tank continuously heats fresh drinking water and reduces the need for domestic hot water storage, thus minimizing the risk of Legionella growth. The large surface area of ​​the stainless steel heat exchanger ensures high hot water output; a sacrificial anode is not required, making the storage tank maintenance-free.\u003c\/p\u003e  \u003ch3\u003eMaterials and workmanship\u003c\/h3\u003e  \u003cp\u003eThe tank is made of high-quality S235JRG2 steel according to DIN 4753\/EN 12897, and the domestic hot water heat exchanger is made of 1.4404 stainless steel corrugated tubing (Made in Germany). The tank has a raw interior and a primed exterior; the connections for the domestic hot water heat exchanger are located on the side.\u003c\/p\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003cdiv class=\"se-component se-image-container __se__float-right\"\u003e  \u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/FKS_480_1560_3000_480x480.webp?v=1756205640\" alt=\"\" data-align=\"right\" data-file-name=\"FKS_480_1560_3000_480x480.webp?v=1756205640\" data-file-size=\"0\" data-origin=\",\" data-size=\",\" data-rotate=\"\" data-percentage=\"auto,auto\" style=\"margin-bottom: 16px; margin-left: 16px;\"\u003e\u003c\/figure\u003e  \u003c\/div\u003e  \u003cp\u003eOperating pressure of the tank up to max. 5 bar, operating pressure of the potable water heat exchanger up to max. 10 bar. Volume variants range from 200 to 2000 liters; models 200–400 L are equipped with one socket for an electric heating element, 600–2000 L have two sockets. An electric heating element can be easily retrofitted.\u003c\/p\u003e  \u003ch3\u003eConnections and integration\u003c\/h3\u003e  \u003cp\u003eAll connections are designed so that connected energy sources and appliances can be operated independently, thus minimizing control requirements. Additionally, no separate controller or pump is required for hot water preparation, simplifying installation.\u003c\/p\u003e  \u003ch3\u003eHeat exchanger and performance\u003c\/h3\u003e  \u003cp\u003eThe stainless steel corrugated pipe, used as a fresh water heat exchanger, offers high flow rates and efficiency due to its large surface area. An extra-large smooth-tube heat exchanger inside the tank is available for solar and heating system connections, ensuring efficient heat exchange between the heating and domestic hot water circuits.\u003c\/p\u003e  \u003ch3\u003eInsulation options\u003c\/h3\u003e  \u003cp\u003eSeveral insulation options are available: 100 mm EPS (efficiency class C), 130 mm EPS AirPor® (efficiency class B), and 150 mm PU super rigid foam (efficiency class A) for volumes of 600–1000 liters. All options have a silver-gray plastic casing with a sealing strip; the PU insulation is designed as a removable cover.\u003c\/p\u003e  \u003ch3\u003eEPS AirPor® polystyrene foam – properties\u003c\/h3\u003e  \u003cp\u003eEPS AirPor® insulation combines EPS with graphite additives for improved heat reflection, reduced heat loss, and therefore lower energy costs. It features a perfect fit, easy installation, 100% recyclability, and additional floor and lid insulation; thermal conductivity according to DIN EN 12667: 0.0316 W\/mK.\u003c\/p\u003e  \u003ch3\u003ePU super rigid foam insulation\u003c\/h3\u003e  \u003cp\u003eThe 150 mm PU super rigid foam insulation offers very good insulating properties (thermal conductivity 0.023 W\/mK), a fleece lamination to prevent convection, and a robust, removable shell with a PS casing in RAL 9006. This variant achieves energy efficiency class A and is also recyclable.\u003c\/p\u003e  \u003ch3\u003eAdvantages and operating costs\u003c\/h3\u003e  \u003cp\u003eThe combination of efficient thermal insulation, a high-quality stainless steel heat exchanger, and low water storage reduces heat loss and operating costs. EPS AirPor® can achieve up to 30% less loss compared to conventional insulation, resulting in lower energy costs and improved long-term performance.\u003c\/p\u003e  \u003ch3\u003eInstallation, maintenance and safety\u003c\/h3\u003e  \u003cp\u003eInstallation is simple: connections are self-explanatory, a pump or controller for hot water preparation is not required, and electric heating elements can be retrofitted. The absence of sacrificial anodes eliminates the need for routine anode replacement; the storage tank is therefore virtually maintenance-free.\u003c\/p\u003e  \u003ch3\u003eAreas of application\u003c\/h3\u003e  \u003cp\u003eThe FKS is universally applicable in single-family homes, multi-family dwellings, commercial buildings, and applications with combined heat sources, especially where hygienic domestic hot water preparation and flexible system integration are required. It is particularly suitable for systems with solar thermal support and multiple heat generators.\u003c\/p\u003e  \u003ch3\u003eSummary\u003c\/h3\u003e  \u003cp\u003eThe FKS fresh water hygienic combination storage tank combines hygienic fresh water technology, flexible connection options, and efficient insulation variants in a low-maintenance system. Robust materials, easy installation, and high energy efficiency make it a practical solution for modern hot water and heating systems.\u003c\/p\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eHygienic storage tank with 2 heat exchangers of your choice\u003c\/li\u003e  \u003cli\u003eincluding selected insulation\u003c\/li\u003e  \u003cli\u003eAssembly \u0026amp; Operating instructions\u003c\/li\u003e  \u003c\/ul\u003e","brand":"Gema GmbH","offers":[{"title":"200 liters \/ 100mm","offer_id":55327418024284,"sku":"FKS200+SISOC","price":1374.0,"currency_code":"EUR","in_stock":true},{"title":"200 liters \/ 130mm","offer_id":55327418057052,"sku":"FKS200+SISOB","price":1557.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 100mm","offer_id":55327418122588,"sku":"FKS300+SISOC","price":1424.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 130mm","offer_id":55327418155356,"sku":"FKS300+SISOB","price":1607.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 100mm","offer_id":55327418220892,"sku":"FKS400+SISOC","price":1474.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 130mm","offer_id":55327418253660,"sku":"FKS400+SISOB","price":1657.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 100mm","offer_id":55327418319196,"sku":"FKS600+SISOC","price":1524.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 130mm","offer_id":55327418351964,"sku":"FKS600+SISOB","price":1707.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 150mm","offer_id":55327418384732,"sku":"FKS600+SISOA","price":1876.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 100mm","offer_id":55327418417500,"sku":"FKS800+SISOC","price":1554.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 130mm","offer_id":55327418450268,"sku":"FKS800+SISOB","price":1737.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 150mm","offer_id":55327418483036,"sku":"FKS800+SISOA","price":1906.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 100mm","offer_id":55327418515804,"sku":"FKS1000+SISOC","price":1624.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 130mm","offer_id":55327418548572,"sku":"FKS1000+SISOB","price":1807.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 150mm","offer_id":55327418581340,"sku":"FKS1000+SISOA","price":1976.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 100mm","offer_id":55327418614108,"sku":"FKS1500+SISOC","price":2054.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 130mm","offer_id":55327418646876,"sku":"FKS1500+SISOB","price":2237.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 100mm","offer_id":55327418712412,"sku":"FKS2000+SISOC","price":2434.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 130mm","offer_id":55327418745180,"sku":"FKS2000+SISOB","price":2617.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/schichten-pufferspeicher-mit-2-warmetauscher-5468097.webp?v=1770692066"},{"product_id":"warmepumpen-kombispeicher","title":"Heat pumps - combined storage","description":"\u003ch2\u003eHeat pump combination storage tank WK – Legionella-safe domestic hot water heating\u003c\/h2\u003e  \u003ch3\u003eBrief description\u003c\/h3\u003e  \u003cp\u003eThe WK heat pump combination storage tank combines hygienic domestic hot water heating and buffer storage in a single compact container and is specifically designed for heat pump systems. Thanks to the integrated stainless steel corrugated pipe in the upper part of the tank, domestic hot water is heated without a large storage volume, thus reducing legionella growth and minimizing maintenance.\u003c\/p\u003e  \u003ch3\u003eConstruction and materials\u003c\/h3\u003e  \u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/WK_TZ_480_1167_3000_480x480.webp?v=1756211181\" style=\"margin-right: 16px; margin-bottom: 16px; float: left;\"\u003e\u003c\/div\u003e  \u003cp\u003eThe storage tank is made of high-quality steel S235JRG2 according to DIN 4753 and European standard EN 12897; the domestic hot water heat exchanger is a stainless steel corrugated pipe (1.4404) manufactured in Germany. The tank is unfinished inside, primed outside, and divided into two thermally separated sections: domestic hot water heating at the top and a heating buffer at the bottom.\u003c\/p\u003e  \u003ch3\u003eOperating principle and protection against Legionella\u003c\/h3\u003e  \u003cp\u003eIn the upper section, the stainless steel corrugated pipe heats drinking water on demand, meaning only small amounts of water need to be stored and the risk of Legionella is significantly reduced. The separate buffer tank in the lower section stores heating energy for the heat pump operation and simultaneously allows for large temperature differences between the two sections.\u003c\/p\u003e  \u003ch3\u003eHeat exchangers and performance characteristics\u003c\/h3\u003e  \u003cp\u003eThe stainless steel heat exchanger offers high hot water output and fast heating times due to its large surface area. Both storage areas are equipped with separate sockets for electric heating elements, making it easy to integrate additional heating.\u003c\/p\u003e  \u003ch3\u003eInsulation options\u003c\/h3\u003e  \u003cp\u003eThe combination storage tank is available with various insulation options: 100 mm EPS (efficiency class C), 130 mm EPS AirPor® (efficiency class B), or 150 mm PU super rigid foam (efficiency class A, for 600–1000 l). Each version is removable and features a silver-grey plastic casing and a sealing strip.\u003c\/p\u003e  \u003ch3\u003eEPS AirPor® insulation\u003c\/h3\u003e  \u003cp\u003eThe innovative EPS AirPor® insulation combines expanded polystyrene with graphite nanoparticles for improved heat reflection. This construction reduces heat loss compared to conventional solutions, is easy to install, fits precisely, and is recyclable.\u003c\/p\u003e  \u003ch3\u003ePU super-rigid foam insulation\u003c\/h3\u003e  \u003cp\u003eThe 150 mm PU combination insulation (PU + PV fleece) offers very low thermal conductivity and prevents convection losses at the container walls, lid, and joints. It is robust, skin-friendly, 100% recyclable, and ensures maximum energy efficiency (Class A).\u003c\/p\u003e  \u003ch3\u003eAssembly, connections and transport\u003c\/h3\u003e  \u003cp\u003eAll connections are located on the side; both storage units can be disassembled and transported separately. The insulation is removable, facilitating installation and servicing, even in confined spaces.\u003c\/p\u003e  \u003ch3\u003eAdvantages for operators\u003c\/h3\u003e  \u003cp\u003eThe combined storage tank reduces heat losses, minimizes maintenance by eliminating the need for a sacrificial anode, enables simultaneous heating and cooling of the underfloor heating system, and increases the efficiency of heat pump systems through optimized stratification and a large heat exchanger surface.\u003c\/p\u003e  \u003ch3\u003eAreas of application and planning guidelines\u003c\/h3\u003e  \u003cp\u003eIdeal for residential buildings, apartment buildings, and commercial projects with heat pumps and underfloor heating or cooling systems. When selecting the insulation option, storage capacity, desired energy efficiency, and installation conditions should be considered; we are happy to assist with the design.\u003c\/p\u003e  \u003ch3\u003eTechnical data \u0026amp; Operation\u003c\/h3\u003e  \u003cp\u003eMaximum operating pressure of the tank: 5 bar; maximum operating pressure of the domestic hot water heat exchanger: 10 bar. Tank made of S235JRG2 steel; heat exchanger made of 1.4404 stainless steel. Efficiency classes depend on insulation: A (150 mm PU), B (130 mm EPS AirPor®), C (100 mm EPS). Both storage areas have sockets for electric heating elements.\u003c\/p\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eHeat pumps - Combination storage tank of your choice\u003c\/li\u003e  \u003cli\u003eincluding selected insulation\u003c\/li\u003e  \u003cli\u003eAssembly \u0026amp; Operating instructions\u003c\/li\u003e  \u003c\/ul\u003e","brand":"Gema GmbH","offers":[{"title":"600 \/ 100mm","offer_id":55329983037788,"sku":"WK600+SISOC","price":2254.0,"currency_code":"EUR","in_stock":true},{"title":"600 \/ 130mm","offer_id":55329983070556,"sku":"WK600+SISOB","price":2437.0,"currency_code":"EUR","in_stock":true},{"title":"600 \/ 150mm","offer_id":55329983103324,"sku":"WK600+SISOA","price":2606.0,"currency_code":"EUR","in_stock":true},{"title":"800 \/ 100mm","offer_id":55329983136092,"sku":"WK800+SISOC","price":2384.0,"currency_code":"EUR","in_stock":true},{"title":"800 \/ 130mm","offer_id":55329983168860,"sku":"WK800+SISOB","price":2567.0,"currency_code":"EUR","in_stock":true},{"title":"800 \/ 150mm","offer_id":55329983201628,"sku":"WK800+SISOA","price":2736.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/schichten-pufferspeicher-mit-2-warmetauscher-5468097.webp?v=1770692066"},{"product_id":"schichten-pufferspeicher-mit-2-warmetauscher","title":"Layers - buffer storage with 2 heat exchangers","description":"\u003ch2\u003eLayered buffer storage PLCRR\u003c\/h2\u003e  \u003ch3\u003eProduct overview\u003c\/h3\u003e  \u003cp\u003eThe SPSRR stratified buffer storage tank is a versatile hot water storage tank for heating, solid fuel and solar thermal systems, as well as combined heat and power plants. It was developed to ensure optimized stratification of temperature zones and efficient heat exchange.\u003c\/p\u003e  \u003ch3\u003eConstruction and materials\u003c\/h3\u003e  \u003cdiv style=\"text-align: right;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/SPSRR_480_1450_3000_480x480.webp?v=1756360880\" style=\"margin-bottom: 16px; margin-left: 16px; float: right;\"\u003e\u003c\/div\u003e  \u003cp\u003eThe tank and integrated smooth-tube heat exchangers are made of high-quality S235JRG2 steel and comply with DIN 4753 and EN 12897. The heat exchangers are securely welded into the storage tank, ensuring stability and durability.\u003c\/p\u003e  \u003cp\u003eThe storage tank sits on a base ring; the interior of the tank is unfinished, while the exterior is primed black. The maximum operating pressure of the tank is 5 bar; it also features two sockets for electric heating elements.\u003c\/p\u003e  \u003ch3\u003eLayer technology and heat exchangers\u003c\/h3\u003e  \u003cp\u003eFor improved stratification, stratification channels and an integrated stratification plate are incorporated into the storage tank. These measures ensure that return flow rates from the heating circuits are directed precisely and temperature zones are clearly separated.\u003c\/p\u003e  \u003cp\u003eIntegrated smooth tube heat exchangers at the top and bottom allow for the simultaneous and efficient use of solar thermal energy and heating systems, thereby increasing system flexibility.\u003c\/p\u003e  \u003ch3\u003eConnections and assembly\u003c\/h3\u003e  \u003cp\u003eThe 90° angled socket arrangement facilitates assembly and simplifies the electrical and hydraulic connection of multiple buffer tanks. This significantly simplifies installation in complex systems.\u003c\/p\u003e  \u003cp\u003eEasy installation is further supported by the robust construction and the provided connections for electric heating elements, making retrofitting straightforward.\u003c\/p\u003e  \u003ch3\u003eOverview of insulation options\u003c\/h3\u003e  \u003cp\u003eThe storage tank is available in various insulation options: 100 mm EPS (efficiency class C), 130 mm EPS AirPor® (efficiency class B), and 150 mm PU super rigid foam (efficiency class A) for tank sizes from 600 to 1000 liters. Each version comes with a matching plastic casing and sealing strip.\u003c\/p\u003e  \u003ch3\u003eEPS AirPor® grey insulation\u003c\/h3\u003e  \u003cp\u003eEPS AirPor® insulation combines polystyrene foam with graphite nanoparticles, thereby increasing heat reflection and reducing heat loss. Typical features include up to 30% less heat loss compared to conventional insulation and a thermal conductivity of 0.0316 W\/mK according to DIN EN 12667.\u003c\/p\u003e  \u003cp\u003eThe insulation is lightweight, stable, 100% recyclable, and quick to install. Efficiency class B is achieved with 130 mm insulation thickness (110 mm EPS + 20 mm fleece) and 150 mm lid insulation; efficiency class C corresponds to 100 mm insulation thickness (80 mm EPS + 20 mm fleece) and 100 mm lid insulation.\u003c\/p\u003e  \u003ch3\u003ePU super rigid foam insulation\u003c\/h3\u003e  \u003cp\u003eThe PU super rigid foam insulation offers excellent insulating properties with a thermal conductivity of 0.023 W\/mK according to DIN EN 12667. The design comprises 150 mm PU plus 10 mm PV fleece lamination and a silver-grey PS jacket (RAL 9006) with a clamping strip.\u003c\/p\u003e  \u003cp\u003eThe insulation is removable, making it particularly easy to install in all temperature conditions. The fleece lamination reduces convection losses at the container walls, lid, and fittings; the solution is environmentally friendly, skin-friendly, and recyclable.\u003c\/p\u003e  \u003ch3\u003eAdvantages \u0026amp; Areas of application\u003c\/h3\u003e  \u003cp\u003eThe SPSRR combines robust construction, efficient layer technology, and flexible insulation options to reduce operating costs and increase system efficiency. Its permanently welded heat exchangers and optimized connections make it an attractive choice for both new construction and retrofitting.\u003c\/p\u003e  \u003cp\u003eTypical applications include heating systems, solid fuel systems, solar thermal systems and combined heat and power plants, where clear temperature stratification, low heat losses and durable construction are required.\u003c\/p\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eStratified storage tank with 2 heat exchangers of your choice\u003c\/li\u003e  \u003cli\u003eincluding selected insulation\u003c\/li\u003e  \u003cli\u003eAssembly \u0026amp; Operating instructions\u003c\/li\u003e  \u003c\/ul\u003e","brand":"Gema GmbH","offers":[{"title":"600 liters \/ 100mm","offer_id":55343623045468,"sku":"SPSRR600+SISOC","price":1425.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 130mm","offer_id":55343623078236,"sku":"SPSRR600+SISOB","price":1608.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 150mm","offer_id":55343623111004,"sku":"SPSRR600+SISOA","price":1777.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 100mm","offer_id":55343623143772,"sku":"SPSRR800+SISOC","price":1469.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 130mm","offer_id":55343623176540,"sku":"SPSRR800+SISOB","price":1652.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 150mm","offer_id":55343623209308,"sku":"SPSRR800+SISOA","price":1821.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters \/ 100mm","offer_id":55343623242076,"sku":"SPSRR1000+SISOC","price":1535.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters \/ 130mm","offer_id":55343623274844,"sku":"SPSRR1000+SISOB","price":1718.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters \/ 150mm","offer_id":55343623307612,"sku":"SPSRR1000+SISOA","price":1887.0,"currency_code":"EUR","in_stock":true},{"title":"1,500 liters \/ 100mm","offer_id":55343623340380,"sku":"SPSRR1500+SISOC","price":2085.0,"currency_code":"EUR","in_stock":true},{"title":"1,500 liters \/ 130mm","offer_id":55343623373148,"sku":"SPSRR1500+SISOB","price":2268.0,"currency_code":"EUR","in_stock":true},{"title":"2,000 liters \/ 100mm","offer_id":55343623438684,"sku":"SPSRR2000+SISOC","price":2592.0,"currency_code":"EUR","in_stock":true},{"title":"2,000 liters \/ 130mm","offer_id":55343623471452,"sku":"SPSRR2000+SISOB","price":2775.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/schichten-pufferspeicher-mit-2-warmetauscher-5468097.webp?v=1770692066"},{"product_id":"hygienespeicher-ohne-solarregister","title":"Hygienic storage tank without solar register with A insulation","description":"\u003ch2\u003eHeating water buffer storage tank with domestic hot water heating WGJ-BN INOX\u003c\/h2\u003e  \u003ch3\u003eConstruction and intended use\u003c\/h3\u003e  \u003cp\u003eThe WGJ-BN INOX combines a buffer storage tank for heating water with an integrated domestic hot water heater. Inside, a stainless steel corrugated pipe acts as a heat exchanger, providing a large contact surface for rapid and efficient heat exchange and enabling instantaneous hot water preparation. The maximum operating pressure of the storage tank is 0.3 MPa.\u003c\/p\u003e  \u003cp\u003eThe housing is made of black sheet steel; thermal insulation is provided by \u003cstrong\u003e100 mm of foamed, removable polystyrene foam\u003c\/strong\u003e;  A laminate covering protects the insulation. If required, ELEKTROMET EJK 1500 to 9000 electric heating elements can be used to heat the boiler water.\u003c\/p\u003e  \u003ch3\u003eFeatures and benefits\u003c\/h3\u003e  \u003cp\u003eThe combination of a buffer tank and stainless steel corrugated pipe enables continuous and space-saving hot water preparation without an additional storage tank. The large surface area of ​​the corrugated pipe ensures high heat transfer rates and short heating times.\u003c\/p\u003e  \u003cp\u003eThe storage unit is suitable for integration into central heating systems such as boilers or heat pumps and offers additional flexibility in heat supply through optional electric heating elements.\u003c\/p\u003e  \u003ch3\u003eSafety measures and installation requirements\u003c\/h3\u003e  \u003cp\u003eThe storage tank must only be operated in closed heating systems with a functioning safety valve. A safety valve with a maximum opening pressure of 0.3 MPa must be installed on the heating water return line; this valve should be positioned according to the markings on the housing. No shut-off valves may be installed between the safety valve and the storage tank.\u003c\/p\u003e  \u003cp\u003eA safety valve with a nominal opening pressure of 0.67 MPa (6.7 bar) must be installed at the cold water inlet to the stainless steel pipe. Temporary leakage of water from the safety valve can occur during normal operation and indicates that it is functioning correctly. The outlet must never be blocked or obstructed.\u003c\/p\u003e  \u003ch3\u003eRecommended filters and protective measures\u003c\/h3\u003e  \u003cp\u003eTo increase the service life of the storage tank and the functionality of the safety valve, the manufacturer recommends the use of mechanical filter systems (e.g., wound filters) on the cold water inlet immediately before the safety valve. These filters remove solid contaminants such as sand, corrosion particles, or sludge.\u003c\/p\u003e  \u003ch3\u003eMaintenance and operation\u003c\/h3\u003e  \u003cp\u003eThe functionality of the safety valve must be checked at least once a month and always before each restart after shutdown. Operating the storage tank without safety valves or with defective safety valves is prohibited and dangerous.\u003c\/p\u003e  \u003cp\u003eRepairs to storage tanks and water installations may only be carried out by qualified professionals with the appropriate certification. The installation and operation of filter and safety components must be carried out in accordance with the respective manufacturer's instructions.\u003c\/p\u003e  \u003ch3\u003eInstallation of a heating cartridge\u003c\/h3\u003e  \u003cp\u003eDuring the warranty period, only electric cartridge heaters with insulated heating elements may be used to avoid voiding the warranty. ELEKTROMET's EJK type cartridge heaters meet this requirement and are suitable for this application.\u003c\/p\u003e  \u003cp\u003eThe heating element must be installed according to the installation and operating instructions for the respective heating element. Work on electrical components should be carried out by qualified personnel.\u003c\/p\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin: 16px 16px 16px 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/EBNTD480_774_518.webp?v=1758785257\"\u003e\u003c\/div\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eHygiene storage tank 800 or 1.000 liters\u003c\/li\u003e  \u003cli\u003e100 mm A insulation (2 removable half-shells)\u003c\/li\u003e  \u003cli\u003eAssembly \u0026amp; User manual\u003c\/li\u003e  \u003c\/ul\u003e  \u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Elektromet","offers":[{"title":"800 liters","offer_id":55550796431708,"sku":"EBN800","price":1750.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters","offer_id":55550796530012,"sku":"EBN1000","price":1798.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/heizwasser-pufferspeicher-1906143.webp?v=1770692002"},{"product_id":"hygienespeicher-mit-solarregister-isolierung-a","title":"Hygiene storage tank with solar register \u0026 Insulation A","description":"\u003ch2\u003eHeating water buffer tank with domestic hot water heating WGJ-BN INOX SOLAR\u003c\/h2\u003e  \u003ch3\u003eStructure and intended use\u003c\/h3\u003e  \u003cp\u003eThe WGJ-BN INOX SOLAR is a combined buffer storage tank for heating water and domestic hot water with an integrated stainless steel heating coil as a heat exchanger. It was designed for integration into central heating systems with boilers, heat pumps, or for the use of solar heat, and enables both the storage of heating energy and the continuous heating of drinking water.\u003c\/p\u003e  \u003cp\u003eInside are two separate heating coils: one made of black steel tubing for an additional heat source (e.g., solar collectors), and a stainless steel corrugated tubing coil for efficient domestic hot water heating, which also allows the unit to function as an instantaneous water heater. The maximum operating pressure of the storage tank is 0.3 MPa.\u003c\/p\u003e  \u003ch3\u003eTechnical features\u003c\/h3\u003e  \u003cp\u003eThe tank's casing is made of black sheet steel and is thermally insulated with a 100 mm thick layer of polystyrene foam; this insulation is removable and protected by a laminate sheath. The stainless steel coil ensures a large heat transfer surface and rapid heating of domestic water.\u003c\/p\u003e  \u003cp\u003eTo expand functionality, electrically heated cartridges of the EJK 1500 ÷ 9000 type from ZUG \u0026quot;ELEKTROMET\u0026quot; can be used. The design and dimensions can be found in the manufacturer's specifications; connections and mounting points must be made according to the markings on the housing.\u003c\/p\u003e  \u003ch3\u003eSafety and assembly instructions\u003c\/h3\u003e  \u003cp\u003eThe storage tank may only be operated in closed heating systems in conjunction with a functioning safety valve. A safety valve with a maximum opening pressure of 0.3 MPa must be installed on the heating water return line; this valve protects against excessive pressure buildup in the heating circuit.\u003c\/p\u003e  \u003cp\u003eA safety valve with a rated opening pressure of 0.67 MPa (6.7 bar) must be installed at the cold water inlet to the stainless steel coil and at the solar inlet. No shut-off valves may be installed between the safety valve and the storage tank, and the safety valve outlet must not be blocked or obstructed.\u003c\/p\u003e  \u003ch3\u003eRecommended additional components\u003c\/h3\u003e  \u003cp\u003eTo extend the service life of the storage tank and ensure trouble-free operation of the safety valve, the manufacturer recommends the use of mechanical filter systems (e.g., wound filters) on the cold water inlet directly upstream of the safety valve. These filters remove solid contaminants such as sand, corrosion particles, or sludge.\u003c\/p\u003e  \u003cp\u003eFor electric auxiliary heating, only cartridge heaters with insulated heating elements are permitted during the warranty period; the EJK series from ELEKTROMET meets this requirement. All auxiliary components must be installed according to the respective manufacturer's instructions.\u003c\/p\u003e  \u003ch3\u003eMaintenance and operation\u003c\/h3\u003e  \u003cp\u003eThe safety valve's functionality must be checked at least once a month and always before each commissioning after decommissioning. Before any maintenance or repair work, the respective systems must be shut down and secured in accordance with safety regulations.\u003c\/p\u003e  \u003cp\u003eRepairs to the storage tank and water installation may only be carried out by qualified personnel. Regular inspections and proper maintenance increase the operational reliability and service life of the device.\u003c\/p\u003e  \u003ch3\u003eInstallation of a heating cartridge\u003c\/h3\u003e  \u003cp\u003eDuring the warranty period, only electrically heated cartridges with insulated heating elements may be used. ELEKTROMET EJK cartridge heaters (type EJK 1500 ÷ 9000) are recommended. Installation and electrical connection must be carried out in accordance with the manufacturer's specifications and applicable standards.\u003c\/p\u003e  \u003ch3\u003eAreas of application and advantages\u003c\/h3\u003e  \u003cp\u003eThe WGJ-BN INOX SOLAR is suitable for residential and commercial properties where a combination of buffer storage for heating systems and on-demand hot water preparation is desired. It is particularly advantageous for use in systems with solar collectors, heat pumps, or conventional boilers.\u003c\/p\u003e  \u003cp\u003eThe combination of a large heat exchange surface, compact design, and good thermal insulation enables rapid heat delivery and energy efficiency. The stainless steel coil ensures hygienic heating of domestic water without direct storage for extended periods, thus reducing the risk of Legionella.\u003c\/p\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/EBNSTTB_790_749.webp?v=1758714156\"\u003e\u003c\/p\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eHygiene storage 800 or 1,000 liters\u003c\/li\u003e  \u003cli\u003e100 mm A insulation (2 half shells removable)\u003c\/li\u003e  \u003cli\u003eAssembly \u0026amp; Operating instructions\u003c\/li\u003e  \u003c\/ul\u003e","brand":"Elektromet","offers":[{"title":"800 liters","offer_id":55552187924828,"sku":"EBNS800","price":1940.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters","offer_id":55552187957596,"sku":"EBNS1000","price":1990.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/heizwasser-pufferspeicher-1906143.webp?v=1770692002"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/collections\/hygienespeicher-6567582.webp?v=1770692109","url":"https:\/\/gemashop.de\/en-pt\/collections\/hygienespeicher.oembed","provider":"GEMA Shop","version":"1.0","type":"link"}