{"title":"Buffer","description":"\u003ch2\u003eBuffer storage tanks – efficient heat storage for modern heating systems\u003c\/h2\u003e\u003ch3\u003eAdvantages of buffer storage\u003c\/h3\u003e\u003cp\u003eBuffer storage tanks offer a wide range of advantages for residential and commercial heating solutions. They enable the decoupling of heat generation and heat consumption, allowing boilers or heat generators to operate within their most economical operating range. This decoupling reduces cycling, extends the service life of system components, and lowers maintenance requirements. At the same time, operational reliability increases because temperature fluctuations are buffered, and heat is immediately available when needed.\u003c\/p\u003e","products":[{"product_id":"warmwasserspeicher-actostor-vih-ql-75-2-b","title":"Vaillant actoSTOR VIH QL 75\/2 B hot water stratified storage tank, wall-mounted","description":"\u003ch2\u003eVaillant actoSTOR VIH QL 75\/2 B hot water storage tank\u003c\/h2\u003e  \u003cp\u003e\u003cstrong\u003eWall-mounted stratified storage tank for small households\u003c\/strong\u003e\u003c\/p\u003e  \u003cdiv class=\"base__image-text-section overflow-auto\"\u003e  \u003cdiv class=\"base__image-text-section__container\"\u003e  \u003cp\u003eOur wall-mounted stratified coil storage tank actoSTOR delivers exceptional hot water comfort in a compact space. This type of storage tank is unique on the market.\u003c\/p\u003e  \u003c\/div\u003e  \u003c\/div\u003e  \u003cdiv class=\"content-toggle-group content-toggle-group--theme-expand content-toggle--is-deactivated\" data-content-toggle-theme-activated-only=\"default\" data-content-toggle-deactivate-at-breakpoint=\"640\"\u003e  \u003cdiv class=\"content-toggle\"\u003e  \u003ch3 class=\"content-toggle__trigger\" aria-selected=\"true\" aria-expanded=\"true\" role=\"tab\" id=\"benefitTrigger4671\" aria-controls=\"benefitContent4671\" tabindex=\"0\"\u003eUsing the best technology\u003c\/h3\u003e  \u003cdiv class=\"content-toggle__content\" aria-hidden=\"false\" role=\"tabpanel\" id=\"benefitContent4671\" aria-labelledby=\"benefitTrigger4671\"\u003e  \u003cdiv class=\"content-toggle__content__inner\"\u003e  \u003cp\u003eThe compact storage tank operates with exceptional efficiency thanks to our patented ActoNomic stratified charging system. It continuously heats small amounts of water and stratifies them from the top into the tank. This means hot water flows from the tap faster – and you enjoy maximum hot water comfort. Stratified storage tanks deliver up to 50% more performance than conventional coil storage tanks of the same volume. The actoSTOR is technically and aesthetically perfectly matched to the modern ecoTEC plus VCW 1-5 gas condensing boiler with integrated hot water preparation.\u003c\/p\u003e  \u003c\/div\u003e  \u003c\/div\u003e  \u003c\/div\u003e  \u003cdiv class=\"content-toggle\"\u003e  \u003ch3 class=\"content-toggle__trigger\" aria-selected=\"true\" aria-expanded=\"true\" role=\"tab\" id=\"benefitTrigger4673\" aria-controls=\"benefitContent4673\" tabindex=\"0\"\u003e Vaillant actoSTOR VIH QL 75\/2 B Ideal for living areas\u003c\/h3\u003e  \u003cdiv class=\"content-toggle__content\" aria-hidden=\"false\" role=\"tabpanel\" id=\"benefitContent4673\" aria-labelledby=\"benefitTrigger4673\"\u003e  \u003cdiv class=\"content-toggle__content__inner\"\u003e  \u003cp\u003eThanks to its optimal connection accessories and the option of cladding the connecting pipes with additional design elements, it also looks great in the kitchen or bathroom. With a storage capacity of 72 liters, it is ideally suited for smaller households.\u003c\/p\u003e  \u003c\/div\u003e  \u003c\/div\u003e  \u003c\/div\u003e  \u003c\/div\u003e  \u003ch3\u003eTechnical data: Vaillant actoSTOR VIH QL 75\/2 B hot water storage tank\u003c\/h3\u003e  \u003cstyle type=\"text\/css\"\u003e \ttable.tableizer-table { \t\tfont-size: 12px; \t\tborder: 1px solid #CCC;  \t\tfont-family: Arial, Helvetica, sans-serif; \t}  \t.tableizer-table td { \t\tpadding: 4px; \t\tmargin: 3px; \t\tborder: 1px solid #CCC; \t} \t.tableizer-table th { \t\tbackground-color: #104E8B;  \t\tcolor: #FFF; \t\tfont-weight: bold; \t} \u003c\/style\u003e  \u003ctable class=\"tableizer-table\"\u003e  \u003cthead\u003e  \u003ctr class=\"tableizer-firstrow\"\u003e  \u003cth\u003eactoSTOR VIH QL 75\/2 B\u003c\/th\u003e  \u003cth\u003e  \u003c\/th\u003e  \u003c\/tr\u003e  \u003c\/thead\u003e  \u003ctbody\u003e  \u003ctr\u003e  \u003ctd\u003eHeight\u003c\/td\u003e  \u003ctd\u003e720 mm\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e  \u003ctd\u003eWidth\u003c\/td\u003e  \u003ctd\u003e440 mm\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e  \u003ctd\u003edepth\u003c\/td\u003e  \u003ctd\u003e440 mm\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e  \u003ctd\u003eWeight\u003c\/td\u003e  \u003ctd\u003e38 kg\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e  \u003ctd\u003eWeight ready for operation\u003c\/td\u003e  \u003ctd\u003e110 kg\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e  \u003ctd\u003eHot water (A+ - F)\u003c\/td\u003e  \u003ctd\u003eB\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e  \u003ctd\u003eTotal storage capacity\u003c\/td\u003e  \u003ctd\u003e72 l\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e  \u003ctd\u003eMaximum hot water temperature.\u003c\/td\u003e  \u003ctd\u003e75 °C\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e  \u003ctd\u003eMaximum heating temperature.\u003c\/td\u003e  \u003ctd\u003e110 °C\u003c\/td\u003e  \u003c\/tr\u003e  \u003c\/tbody\u003e  \u003c\/table\u003e","brand":"Vaillant","offers":[{"title":"Right-hand assembly","offer_id":47867889189212,"sku":"0010029868","price":1916.5,"currency_code":"EUR","in_stock":true},{"title":"Left mounting","offer_id":47867889156444,"sku":"0010029869","price":1916.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/vaillant-actostor-vih-ql-752-b-warmwasser-schichtladespeicher-wandhangend-6406923.png?v=1770692676"},{"product_id":"brauchwasserspeicher-fish-s1-x","title":"Hot water tank Fish S1","description":"\u003ch2\u003eFish S1 X domestic hot water storage tank\u003c\/h2\u003e  \u003cp\u003e\u003cstrong\u003eVertical hot water storage tank for domestic hot water preparation.\u003c\/strong\u003e\u003c\/p\u003e  \u003cp\u003eThe hot water contact surface with the storage tank is protected against corrosion by a layer of high-quality enamel and magnesium anode*.\u003cbr\u003eThis ensures, in accordance with DIN 4753, that the process water only comes into contact with a hygienically clean surface.\u003cbr\u003e\u003cbr\u003eDomestic hot water is heated by a smooth-tube water heat exchanger, which allows the connection of an external heat source such as... z.B.  Solar panels, heat pumps, boilers or optional electric heating elements are possible.\u003c\/p\u003e  \u003ch3\u003eThermal insulation \u0026amp; Fish S1 X domestic hot water storage tank\u003c\/h3\u003e  \u003cp\u003eThe thermal insulation in the storage tanks consists of a layer of CFC-free polyurethane rigid foam and a replaceable layer of PVC jacket.\u003c\/p\u003e  \u003ch3\u003eStandard equipment of the hot water storage tank\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eInspection opening, thermometer, socket for electric heating element, magnesium anode*,\u003c\/li\u003e  \u003cli\u003einternal heat exchanger.\u0026amp;nbsp;\u003c\/li\u003e  \u003cli\u003e*Optionally, a titanium anode can be used.\u003cbr\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Sunex_Fish_S1_X_Aufbau_3000_3000_480x480.webp?v=1755672941\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e  \u003cul\u003e  \u003cli\u003eMaterial: \u003cstrong\u003eS235JR\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eWelding: automatic welding\u003c\/li\u003e  \u003cli\u003eProtection: \u003cstrong\u003ehigh-quality\u003c\/strong\u003e Enamel coating and 2 sacrificial anodes\u003c\/li\u003e  \u003cli\u003eMaximum operating pressure of the storage tank: \u003cstrong\u003e10 bar\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eMaximum test pressure: \u003cstrong\u003e15 bar\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eMaximum operating temperature:\u003cstrong\u003e 95ºC\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eInsulation: \u003cstrong\u003e50 mm\u003c\/strong\u003e thick polyurethane foam\u003c\/li\u003e  \u003cli\u003eHeat exchanger: \u003cstrong\u003eSteel pipe P235GH\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eInspection opening: \u003cstrong\u003eø122 mm\/ ø179 mm\u003c\/strong\u003e  \u003c\/li\u003e  \u003c\/ul\u003e","brand":"Sunex","offers":[{"title":"150X","offer_id":49070481998172,"sku":"SS1150","price":559.0,"currency_code":"EUR","in_stock":true},{"title":"200X","offer_id":49064388886876,"sku":"SS1200","price":599.0,"currency_code":"EUR","in_stock":true},{"title":"300X","offer_id":49064388919644,"sku":"SS1300","price":699.0,"currency_code":"EUR","in_stock":true},{"title":"400X","offer_id":49064388952412,"sku":"SS1400","price":939.0,"currency_code":"EUR","in_stock":true},{"title":"500X","offer_id":49064388985180,"sku":"SS1500","price":1029.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/warmwasserspeicher-fish-s1-x-2230542.webp?v=1770692730"},{"product_id":"sunex-fish-carbon-s4-trinkwasserspeicher","title":"Sunex FISH Carbon S4 drinking water storage tank","description":"\u003ch2\u003eSunex FISH Carbon S4 drinking water storage tank – 200 liters\u003c\/h2\u003e  \u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e  \u003cp\u003eWith its 200-liter volume and a weight of only 33 kg, the Sunex FISH Carbon S4 offers an unbeatable capacity-to-handling ratio. The central arrangement of all connections on the top allows for flexible connection to a wide variety of heating systems without wasting space.\u003c\/p\u003e  \u003cp\u003eThanks to the 30 mm thick rigid polyurethane foam insulation, heat loss is reduced to a minimum and the system's energy efficiency is significantly increased. The corrosion-resistant construction made of HDPE and glass fiber reinforced composite prevents rust formation and ensures a long service life.\u003c\/p\u003e  \u003ch3\u003eTechnology\u003c\/h3\u003e  \u003cp\u003eStorage capacity: 200 liters, Material: HDPE + fiberglass composite, Max. operating pressure: 6 bar, Test pressure: 9 bar, Max. operating temperature: 75 °C, Energy efficiency class: B, Insulation: 30 mm rigid PU foam, Heat loss (standby): 58 W, Outer casing: Blue, Weight: 33 kg.\u003c\/p\u003e  \u003ch3\u003ematerial \u0026amp; construction\u003c\/h3\u003e  \u003cp\u003eThe core of the drinking water storage tank is made of high-density polyethylene (HDPE), reinforced externally with a fiberglass composite. This combination offers excellent corrosion protection and maximum resistance to pressure and chemical influences.\u003c\/p\u003e  \u003cp\u003eCompared to conventional steel tanks, there is no risk of rust or internal deposits. This ensures consistently high water quality and significantly reduces maintenance requirements.\u003c\/p\u003e  \u003ch3\u003eEnergy optimization\u003c\/h3\u003e  \u003cp\u003eThe thick rigid polyurethane foam insulation ensures that, thanks to its excellent insulating properties, standby losses are only 58 W. This gives the storage tank an energy efficiency rating of B and contributes to sustainable and cost-effective hot water preparation.\u003c\/p\u003e  \u003cp\u003eDue to its low heat loss, the Sunex FISH Carbon S4 is particularly impressive in systems with intermittent use, as stored heat is retained for longer periods.\u003c\/p\u003e  \u003ch3\u003eEasy integration\u003c\/h3\u003e  \u003cp\u003eThe compact design and blue painted outer casing guarantee quick identification and effortless placement in your heating or domestic hot water system. The top-mounted connections allow for straightforward installation and ensure short installation times.\u003c\/p\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eStorage capacity: 200 liters\u003c\/li\u003e  \u003cli\u003eMaterial: HDPE + fiberglass composite\u003c\/li\u003e  \u003cli\u003eMaximum operating pressure: 6 bar\u003c\/li\u003e  \u003cli\u003eTest pressure: 9 bar\u003c\/li\u003e  \u003cli\u003eMaximum operating temperature: 75°C\u003c\/li\u003e  \u003cli\u003eEnergy efficiency class: B\u003c\/li\u003e  \u003cli\u003eInsulation: 30 mm rigid polyurethane foam\u003c\/li\u003e  \u003cli\u003eHeat loss (standstill): 58 W\u003c\/li\u003e  \u003cli\u003eOuter shell: Blue\u003c\/li\u003e  \u003cli\u003eWeight: 33 kg\u003cbr\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eSunex Fish S4 Carbon 200 liters\u003c\/li\u003e  \u003cli\u003eAssembly \u0026amp; User manual\u003c\/li\u003e  \u003c\/ul\u003e  \u003ch3\u003eDownload\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003ebrochure\u003c\/li\u003e  \u003c\/ul\u003e","brand":"Sunex","offers":[{"title":"Default Title","offer_id":54845845700956,"sku":"SS4200C","price":517.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/sunex-fish-carbon-s4-trinkwasserspeicher-7426559.webp?v=1770692064"},{"product_id":"brauchwasserspeicher-sunex-fish-s4-x","title":"Sunex Fish S4 X hot water tank","description":"\u003ch2\u003eSUNEX Fish S4X – Vertical buffer storage tank for heating systems\u003c\/h2\u003e  \u003ch3\u003eCharacteristics\u003c\/h3\u003e  \u003cp\u003eThe SUNEX Fish S4X is a vertical buffer storage tank designed for use with solid fuel, oil, gas, heat pump, and electric boilers. Numerous connections allow for integration into a wide variety of heating systems and the combination of multiple tanks to create batteries, enabling the total capacity to be tailored to individual needs.\u003c\/p\u003e  \u003cp\u003eOptionally, an additional heat exchanger can be installed to support the heating system with a solar thermal system. Models with a capacity of 200–500 liters are also suitable for storing chilled water (7–12 °C).\u003c\/p\u003e  \u003cp\u003eMade from S235JR steel and processed using automated welding, the accumulator meets high industrial standards. The maximum operating pressure is 3 bar, and the test pressure is 4.5 bar. The maximum operating temperature is 95 °C.\u003c\/p\u003e  \u003cp\u003eFor storage volumes of 200–500 liters, a 50 mm thick polyurethane foam insulation with a replaceable PVC film layer is used. Larger versions (800–1000 liters) utilize a graphite-polyester fleece with a 100 mm thick insulation layer; the outer casing is gray.\u003c\/p\u003e  \u003ch3\u003eAreas of application\u003c\/h3\u003e  \u003cp\u003eThe buffer storage tank is suitable for single-family homes, multi-family dwellings, commercial buildings, and systems with combined heat and power supply. Its flexible connection design makes it particularly suitable for non-standard installations and modular storage systems.\u003c\/p\u003e  \u003ch3\u003eAdvantages\u003c\/h3\u003e  \u003cp\u003eRobust construction, versatile connection options, and the option for solar power make the SUNEX Fish S4X a durable and adaptable solution. The ability to measure cooling capacity expands its range of applications beyond traditional heating tasks.\u003c\/p\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003cdiv style=\"text-align: center;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Sunex_fish_S4_X_Aufbau_3000_3000.webp?v=1755678523\"\u003e\u003c\/div\u003e  \u003cul\u003e  \u003cli\u003eMaterial: \u003cstrong\u003eS235JR\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eWelding: automatic welding\u003c\/li\u003e  \u003cli\u003eMaximum operating pressure of the storage tank: \u003cstrong\u003e3 bar\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eMaximum test pressure: \u003cstrong\u003e4.5 bar\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eMaximum operating temperature: \u003cstrong\u003e95ºC\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eInsulation: For storage tanks with a capacity of (100 - 500 liters) \u003cstrong\u003e50 mm\u003c\/strong\u003e Thick polyurethane foam and a replaceable PVC film layer. For storage tanks with a capacity of (800 - 1000 liters) graphite-polyester fleece + \u003cstrong\u003e100mm\u003c\/strong\u003e thick PU soft foam and a PVC film layer.\u003c\/li\u003e  \u003cli\u003eOuter shell: grey\u003c\/li\u003e  \u003c\/ul\u003e","brand":"Sunex","offers":[{"title":"200 liters","offer_id":55287768088924,"sku":"SS4200","price":366.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters","offer_id":55287768121692,"sku":"SS4300","price":537.0,"currency_code":"EUR","in_stock":true},{"title":"500 liters","offer_id":55287768154460,"sku":"SS4500","price":617.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters","offer_id":55287768187228,"sku":"SS4800","price":936.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters","offer_id":55287768219996,"sku":"SS41000","price":0.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/sunex-fish-s4-x-100-liter-aufhangung-oder-stellfusse-4557708.webp?v=1770692056"},{"product_id":"warmwasserspeicher-sunex-fish-s8-x","title":"Hot water tank Sunex Fish S8","description":"\u003ch2\u003eSUNEX Fish S8 X – Upright hot water storage tank for household use\u003c\/h2\u003e  \u003ch3\u003eProduct description\u003c\/h3\u003e  \u003cp\u003eThe SUNEX Fish S8 X is a vertical hot water storage tank for the reliable supply of domestic hot water in private homes. Its robust construction from S235JR steel and automated welding processes offer a durable solution for households with varying heating requirements.\u003c\/p\u003e  \u003cp\u003eThe inner surface of the storage tank is coated with a high-quality enamel layer and additionally protected by two magnesium anodes. This combination effectively reduces corrosion and, in accordance with DIN 4753, ensures that the service water only comes into contact with hygienically clean surfaces.\u003c\/p\u003e  \u003cp\u003eThe thermal insulation consists of 50 mm thick, CFC-free rigid polyurethane foam, which minimizes heat loss and reduces standby losses. A replaceable PVC outer jacket protects the insulation and facilitates maintenance and replacement.\u003c\/p\u003e  \u003cp\u003eMaterial: S235JR; maximum operating temperature: 95 °C; maximum operating pressure: 10 bar; maximum test pressure: 15 bar. Inspection openings are available in diameters of ø122 mm and ø179 mm.\u003c\/p\u003e  \u003cp\u003eStandard features include an inspection opening, a thermometer, a socket for an electric heating element, and two magnesium anodes. The gray exterior gives the unit an unobtrusive appearance. When installing and maintaining the unit, observe the applicable standards and have all connection work carried out by qualified personnel.\u003c\/p\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Sunex_Fish_S8_X_Aufbau_3000_3000_480x480.webp?v=1755691269\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e  \u003cul\u003e  \u003cli\u003eMaterial: \u003cstrong\u003eS235JR\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eWelding: automatic welding\u003c\/li\u003e  \u003cli\u003eProtection: \u003cstrong\u003ehigh-quality \u003c\/strong\u003eEnamel layer and 2 sacrificial anodes\u003c\/li\u003e  \u003cli\u003eMaximum operating pressure of the storage tank: \u003cstrong\u003e10 bar\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eMaximum test pressure: \u003cstrong\u003e15 bar\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eMaximum operating temperature: \u003cstrong\u003e95ºC\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eInsulation: \u003cstrong\u003e50 mm\u003c\/strong\u003e thick polyurethane foam\u003c\/li\u003e  \u003cli\u003eOuter shell: grey color\u003c\/li\u003e  \u003cli\u003eRevision opening: \u003cstrong\u003eø 122 mm\/ø 179 mm\u003c\/strong\u003e  \u003c\/li\u003e  \u003c\/ul\u003e","brand":"Sunex","offers":[{"title":"150 liters","offer_id":55289650610524,"sku":"SS8150","price":445.0,"currency_code":"EUR","in_stock":true},{"title":"200 liters","offer_id":55289650643292,"sku":"SS8200","price":452.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters","offer_id":55289650676060,"sku":"SS8300","price":570.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters","offer_id":55289650708828,"sku":"SS8400","price":731.0,"currency_code":"EUR","in_stock":true},{"title":"500 liters","offer_id":55289650741596,"sku":"SS8500","price":803.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/warmwasserspeicher-sunex-fish-s8-x-6853594.webp?v=1770692066"},{"product_id":"sunex-fish-s4-x-100-liter-mit-mit-stellfussen-und-aufhangung","title":"Sunex Fish S4 X 100 liter suspension or adjustable feet","description":"\u003ch2\u003eSunex Fish S4 X water buffer tank – 100 liters\u003c\/h2\u003e  \u003ch3\u003eProduct overview\u003c\/h3\u003e  \u003cp\u003eThe Sunex Fish S4 X is a 100-liter buffer storage tank for vertical operation. It is available in wall-mounted or floor-standing versions and was specifically designed for use in modern heating systems.\u003c\/p\u003e  \u003cp\u003eIdeally suited for all types of heating systems, especially in combination with heat pumps. The buffer tank allows the connection of a heat source circuit as well as a central heating circuit, thus optimizing system operation.\u003c\/p\u003e  \u003ch3\u003efunction \u0026amp; Temperature range\u003c\/h3\u003e  \u003cp\u003eThe storage unit serves as an intermediate storage point for thermal energy to shift loads and adjust the output of heating systems. It can also be used for cooling: storage of cooling water at temperatures between 7 and 12 °C is possible.\u003c\/p\u003e  \u003cp\u003eThe buffer tank is designed exclusively for vertical installation. When installing, ensure a stable base or suitable mounting system and allow sufficient space for connections and maintenance.\u003c\/p\u003e  \u003ch3\u003eAdvantages\u003c\/h3\u003e  \u003cp\u003eThe Sunex Fish S4 X improves the efficiency of heating and cooling systems by buffering thermal energy, reducing start\/stop cycles of the heat source and ensuring more consistent flow temperatures.\u003c\/p\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003ch4\u003eHanging version\u003c\/h4\u003e  \u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Sunex_S4_X_100_haengend_Aufbau_3000_3000_480x480.webp?v=1755695383\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e  \u003cul\u003e  \u003cli\u003eMaterial: \u003cstrong\u003eS235JR\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eMaximum operating pressure of the storage tank: \u003cstrong\u003e3 bar\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eOperating temperature range: \u003cstrong\u003e7÷95º C\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eInsulation: \u003cstrong\u003e29 mm\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eConnections for consumer\/heat source: \u003cstrong\u003eIG 1½\u003c\/strong\u003e“\u003c\/li\u003e  \u003cli\u003eTemperature sensor connections: \u003cstrong\u003eIG ½”\u003c\/strong\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003cp\u003e\u003cbr\u003e\u003c\/p\u003e  \u003ch4\u003e\u003cstrong\u003estanding version\u003c\/strong\u003e\u003c\/h4\u003e  \u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Sunex_S4_X_100_stehend_Aufbau_3000_3000_480x480.webp?v=1755695538\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e  \u003cul\u003e  \u003cli\u003eMaterial: \u003cstrong\u003eS235JR\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eMaximum operating pressure of the storage tank: \u003cstrong\u003e3 bar\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eOperating temperature range: \u003cstrong\u003e7÷95º C\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eInsulation: \u003cstrong\u003e30 mm\u003c\/strong\u003e  \u003c\/li\u003e  \u003cli\u003eConnections for consumer\/heat source: \u003cstrong\u003eG 1½\u003c\/strong\u003e“\u003c\/li\u003e  \u003cli\u003eTemperature sensor connections: \u003cstrong\u003eG ½”\u003c\/strong\u003e  \u003c\/li\u003e  \u003c\/ul\u003e","brand":"Sunex","offers":[{"title":"hanging","offer_id":55289976488284,"sku":"SS4100","price":427.0,"currency_code":"EUR","in_stock":true},{"title":"standing","offer_id":55289976521052,"sku":"SS4100mZ","price":453.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/sunex-fish-s4-x-100-liter-aufhangung-oder-stellfusse-4557708.webp?v=1770692056"},{"product_id":"energie-pufferspeicher-ohne-warmetauscher","title":"Energy - buffer memory without heat exchanger","description":"\u003ch2\u003eEPS buffer storage – robust heat storage for heating, solar and solid fuel systems\u003c\/h2\u003e  \u003ch3\u003eQuality and manufacturing\u003c\/h3\u003e  \u003cp\u003eOur buffer tanks are manufactured from high-quality S235JRG2 steel in accordance with DIN 4753 and EN 12897. The use of qualified personnel combined with precise welding robotics ensures consistently high product quality, tight welds, and a long service life.\u003c\/p\u003e  \u003cp\u003eThe containers are raw on the inside and primed on the outside and stand on a stable base ring that ensures secure standing and easy assembly.\u003c\/p\u003e  \u003ch3\u003eAreas of application\u003c\/h3\u003e  \u003cp\u003eEPS buffer storage tanks are suitable for heating systems, solid fuel boilers, solar systems, and combined heat and power plants. They reliably store heat and increase the efficiency of renewable and conventional heat sources.\u003c\/p\u003e  \u003cp\u003eThanks to generous connections and the arrangement of the sleeves at 90° angles, several storage units can be easily connected and integrated into a wide variety of systems.\u003c\/p\u003e  \u003ch3\u003eTechnical data and connections\u003c\/h3\u003e  \u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin-right: 16 px; margin-bottom: 16px; float: left;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/eps1_1465_3000_480x480.webp?v=1756119599\"\u003e\u003c\/div\u003e  \u003cp\u003eThe tanks are available in volumes from 200 to 2000 liters. Operating pressures are: up to 1000 liters, max. 5 bar, up to 2000 liters, max. 3 bar. Smaller models (200–400 l) are equipped with a socket for an electric heating cartridge, while larger models (600–2000 l) have two sockets.\u003c\/p\u003e  \u003cp\u003eThe sleeve arrangement at a 90° angle facilitates assembly, the connection of multiple storage tanks and the installation of additional components such as heating cartridges or sensors.\u003c\/p\u003e  \u003ch3\u003eOverview of insulation options\u003c\/h3\u003e  \u003cp\u003eChoose between three insulation variants, tailored to efficiency requirements: \u003cstrong\u003e100 mm\u003c\/strong\u003e STS EPS (efficiency class C), \u003cstrong\u003e130 mm\u003c\/strong\u003e STS EPS AirPor® (efficiency class B) and \u003cstrong\u003e150 mm\u003c\/strong\u003e PU super-rigid foam (efficiency class A). All variants are available with a silver-gray plastic cover and closure strip.\u003c\/p\u003e  \u003cp\u003eFor certain sizes (600–1000 l), PU insulation is available as a particularly efficient option with improved lid and base insulation.\u003c\/p\u003e  \u003ch3\u003eEPS AirPor® grey insulation\u003c\/h3\u003e  \u003cp\u003eThe innovative EPS AirPor® insulation consists of polystyrene foam with added graphite, which significantly improves thermal conductivity. In combination (e.g., 110 mm EPS + 20 mm fleece = 130 mm), it significantly reduces heat loss and thus lowers energy costs.\u003c\/p\u003e  \u003cp\u003eFurther advantages include simple and easy installation, a perfect fit for the storage enclosure, additional floor insulation and high mechanical resistance. \u003cstrong\u003eThermal conductivity according to DIN EN 12667 is approximately 0.0316 W\/mK\u003c\/strong\u003eThe insulation is 100% recyclable and meets fire protection class B2.\u003c\/p\u003e  \u003ch3\u003ePU super rigid foam insulation\u003c\/h3\u003e  \u003cp\u003eThe 150 mm PU super rigid foam insulation combines 150 mm polyurethane with 10 mm polyester fiber fleece and offers excellent insulation properties (\u003cstrong\u003eThermal conductivity approx. 0.023 W\/mK\u003c\/strong\u003e). The fleece lamination prevents convection on the container wall, lid, and sleeves.\u003c\/p\u003e  \u003cp\u003eThe removable insulation with PS sheath (RAL 9006) facilitates installation in all temperature conditions. The material and construction are skin-friendly, recyclable, and comply with \u003cstrong\u003eFire protection class B2\u003c\/strong\u003e.\u003c\/p\u003e  \u003ch3\u003eEase of installation and practical use\u003c\/h3\u003e  \u003cp\u003eThe insulation panels are lightweight, dimensionally stable, and feature locking strips, allowing for quick installation with minimal tooling. The molded fit and additional floor insulation ensure consistent insulation.\u003c\/p\u003e  \u003cp\u003eThanks to the well-thought-out sleeve arrangement and base ring design, on-site installation can be carried out quickly; connecting multiple storage tanks or retrofitting heating cartridges is straightforward.\u003c\/p\u003e  \u003ch3\u003eVariants, features and advantages\u003c\/h3\u003e  \u003cp\u003eOur product range includes buffer tanks, stratified tanks, and modern hygienic combination tanks, covering all common storage types in the industry. Optionally available sleeves for electric heating cartridges and additional connection options allow for flexible configurations.\u003c\/p\u003e  \u003cp\u003eTypical \u003cstrong\u003eAdvantages \u003c\/strong\u003eare \u003cstrong\u003eimproved system efficiency\u003c\/strong\u003e through optimal stratification, \u003cstrong\u003ereduced heat losses\u003c\/strong\u003e depending on the insulation choice and long service life due to robust manufacturing and \u003cstrong\u003ehigh-quality materials\u003c\/strong\u003e.\u003c\/p\u003e  \u003ch3\u003eSustainability and lifespan\u003c\/h3\u003e  \u003cp\u003eThe combination of \u003cstrong\u003edurable quality steel\u003c\/strong\u003e, precise manufacturing and recyclable insulation materials ensure a long service life and sustainable use. \u003cstrong\u003eInsulation materials are recyclable\u003c\/strong\u003e and thus contribute to an environmentally friendly product solution.\u003c\/p\u003e  \u003cp\u003eInvestments in high-quality storage solutions pay for themselves through \u003cstrong\u003ereduced heat losses\u003c\/strong\u003e, efficient use of producers and \u003cstrong\u003elower energy consumption\u003c\/strong\u003e over the lifetime of the system.\u003c\/p\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eEnergy - buffer storage 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 \/ 100 mm","offer_id":55326265278812,"sku":"EPS200+SISOC","price":627.0,"currency_code":"EUR","in_stock":true},{"title":"200 liters \/ 130 mm","offer_id":55326265311580,"sku":"EPS200+SISOB","price":810.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 100 mm","offer_id":55326265377116,"sku":"EPS300+SISOC","price":677.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 130 mm","offer_id":55326265409884,"sku":"EPS300+SPISOB","price":860.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 100 mm","offer_id":55326265475420,"sku":"EPS400+SISOC","price":737.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 130 mm","offer_id":55326265508188,"sku":"EPS400+SISOB","price":920.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 100 mm","offer_id":55326265573724,"sku":"EPS600+SISOC","price":857.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 130 mm","offer_id":55326265606492,"sku":"EPS600+SISOB","price":1040.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 150 mm","offer_id":55326265639260,"sku":"EPS600+SISOA","price":1209.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 100 mm","offer_id":55326265672028,"sku":"EPS800+SISOC","price":877.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 130 mm","offer_id":55326265704796,"sku":"EPS800+SISOB","price":1060.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 150 mm","offer_id":55326265737564,"sku":"EPS800+SISOA","price":1229.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 100 mm","offer_id":55326265770332,"sku":"EPS1000+SISOC","price":907.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 130 mm","offer_id":55326265803100,"sku":"EPS1000+SISOB","price":1090.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 150 mm","offer_id":55326265835868,"sku":"EPS1000+SISOA","price":1259.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 100 mm","offer_id":55326265868636,"sku":"EPS1500+SISOC","price":1377.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 130 mm","offer_id":55326265901404,"sku":"EPS1500+SISOB","price":1560.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 100 mm","offer_id":55326265966940,"sku":"EPS2000+SISOC","price":1737.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 130 mm","offer_id":55326265999708,"sku":"EPS2000+SISOB","price":1920.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/energie-pufferspeicher-ohne-warmetauscher-4646536.webp?v=1770692069"},{"product_id":"energie-pufferspeicher-mit-1-warmetauscher","title":"Energy - buffer memory with 1 heat exchanger","description":"\u003ch2\u003eBuffer storage with 1 heat exchanger for heating, solar and CHP systems\u003c\/h2\u003e  \u003ch3\u003eProduct description\u003c\/h3\u003e  \u003cp\u003eRobust buffer storage tank made of high-quality S235JRG2 steel, manufactured according to DIN 4753 and EN 12897, with a permanently welded smooth-tube heat exchanger. The storage tank is raw inside and primed outside, sits on a stable base ring, and offers sufficient socket connections for flexible use in heating, solid fuel, solar, and combined heat and power systems.\u003c\/p\u003e  \u003ch3\u003eTechnical features\u003c\/h3\u003e  \u003cdiv style=\"text-align: right;\"\u003e\u003cimg style=\"margin-bottom: 16px; margin-left: 16px; float: right;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/epsr11_1549_3000_480x480.webp?v=1756192522\"\u003e\u003c\/div\u003e  \u003cp\u003eThe buffer tank's sleeves are arranged at a 90° angle, facilitating easy installation and the combination of multiple tanks. Operating pressure: up to 1000 liters, max. 5 bar, up to 2000 liters, max. 3 bar. Volume variants and the number of sleeves are tailored to the application: 200–400 liters with one sleeve for an electric heating cartridge, 600–2000 liters with two sleeves.\u003c\/p\u003e  \u003ch3\u003eInsulation variants\u003c\/h3\u003e  \u003cp\u003eChoose from several insulation options: 100 mm STS EPS (efficiency class C), 130 mm STS EPS AirPor® (efficiency class B), or 150 mm PU super rigid foam insulation (efficiency class A) with a plastic sheath and sealing strip. The insulation is dimensionally stable, easy to install, and ensures optimized layering and reduced heat loss.\u003c\/p\u003e  \u003ch3\u003eEPS AirPor® grey insulation\u003c\/h3\u003e  \u003cp\u003eThe modern EPS AirPor® insulation combines polystyrene foam with a graphite blend for improved heat reflection. The 130 mm version (110 mm EPS + 20 mm fleece) achieves efficiency class B, while the 100 mm version (80 mm EPS + 20 mm fleece) achieves efficiency class C. Advantages include up to 30% lower heat loss compared to conventional insulation materials, a perfect fit, and additional floor and roof insulation.\u003c\/p\u003e  \u003ch3\u003ePU super rigid foam insulation\u003c\/h3\u003e  \u003cp\u003eThe 150 mm PU combination insulation (150 mm PU + 10 mm polyester fiber fleece) offers excellent insulation values ​​and energy efficiency class A. The fleece lamination prevents convection on the container wall and lid. The insulation is removable and allows for easy installation in all temperature conditions. Thermal conductivity according to DIN EN 12667: 0.023 W\/mK, fire protection class DIN 4102: B2.\u003c\/p\u003e  \u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e  \u003cp\u003eHigh-quality materials, a permanently integrated smooth-tube heat exchanger, and precisely fitting insulation minimize heat loss and reduce operating costs. The combination of easy installation, robust construction, and recyclability of the insulation materials makes the storage tank economical and sustainable.\u003c\/p\u003e  \u003ch3\u003eAssembly and connection\u003c\/h3\u003e  \u003cp\u003eThe 90° arrangement of the sleeves facilitates installation and the serial connection of multiple buffer tanks. Plug-in sealing strips and dimensionally stable insulation shorten installation times; retrofitting electric heating cartridges is easy for the sizes with sleeves. For optimal design, we recommend consulting your heating specialist.\u003c\/p\u003e  \u003ch3\u003eAreas of application and recommendation\u003c\/h3\u003e  \u003cp\u003eIdeal for heating backup, solar domestic hot water heating, solid fuel systems, and combined heat and power (CHP) plants. The buffer storage tank is suitable for both new installations and modernization projects where energy efficiency and easy integration into existing systems are required.\u003c\/p\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eEnergy - buffer storage with 1 heat exchanger 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 \/ 100 mm","offer_id":55326965170524,"sku":"EPSR200+SISOC","price":752.0,"currency_code":"EUR","in_stock":true},{"title":"200 liters \/ 130 mm","offer_id":55326965203292,"sku":"EPSR200+SISOB","price":935.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 100 mm","offer_id":55326965268828,"sku":"EPSR300+SISOC","price":797.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 130 mm","offer_id":55326965301596,"sku":"EPSR300+SISOB","price":980.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 100 mm","offer_id":55326965367132,"sku":"EPSR400+SISOC","price":869.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 130 mm","offer_id":55326965399900,"sku":"EPSR400+SISOB","price":1052.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 100 mm","offer_id":55326965465436,"sku":"EPSR600+SISOC","price":930.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 130 mm","offer_id":55326965498204,"sku":"EPSR600+SISOB","price":1113.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 150 mm","offer_id":55326965530972,"sku":"EPSR600+SISOA","price":1282.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 100 mm","offer_id":55326965563740,"sku":"EPSR800+SISOC","price":1001.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 130 mm","offer_id":55326965596508,"sku":"EPSR800+SISOB","price":1184.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 150 mm","offer_id":55326965629276,"sku":"EPSR800+SISOA","price":1353.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 100 mm","offer_id":55326965662044,"sku":"EPSR1000+SISOC","price":1036.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 130 mm","offer_id":55326965694812,"sku":"EPSR1000+SISOB","price":1219.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 150 mm","offer_id":55326965727580,"sku":"EPSR1000+SISOA","price":1388.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 100 mm","offer_id":55326965760348,"sku":"EPSR1500+SISOC","price":1361.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 130 mm","offer_id":55326965793116,"sku":"EPSR1500+SISOB","price":1544.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 100 mm","offer_id":55326965858652,"sku":"EPSR2000+SISOC","price":1930.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 130 mm","offer_id":55326965891420,"sku":"EPSR2000+SISOB","price":2113.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/energie-pufferspeicher-mit-1-warmetauscher-6552818.webp?v=1770692073"},{"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-ohne-warmetauscher","title":"Layers - buffer storage without heat exchanger","description":"\u003ch2\u003eLayered buffer storage PLC\u003c\/h2\u003e  \u003ch3\u003eApplication areas\u003c\/h3\u003e  \u003cp\u003eThe SPS stratified buffer storage tank is designed for use in heating, solid fuel and solar thermal systems, as well as in combined heat and power plants. It ensures efficient temperature stratification and provides usable energy as needed from different heat sources.\u003c\/p\u003e  \u003cp\u003eThanks to the optimized feed-in and return flow, the storage tank is suitable for individual systems as well as for connecting several buffer storage tanks in series, for example in larger building concepts or combined energy supplies.\u003c\/p\u003e  \u003ch3\u003ematerial \u0026amp; construction\u003c\/h3\u003e  \u003cp\u003eThe tank is made of high-quality steel S235JRG2 according to DIN 4753 and Euronorm EN 12897. The inside of the container is left raw, the outside is factory primed and stands on a stable base ring.\u003c\/p\u003e  \u003cp\u003eTo improve stratification, stratification channels and a welded-in stratification separator plate are integrated. The sockets are arranged at a 90° angle, which simplifies assembly and the connection of multiple storage tanks.\u003c\/p\u003e  \u003ch3\u003eTechnical features\u003c\/h3\u003e  \u003cdiv style=\"text-align: right;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/SPS_480_1362_3000_480x480.webp?v=1756213010\" style=\"margin-bottom: 16px; margin-left: 16px; float: right;\"\u003e\u003c\/div\u003e  \u003cp\u003eThe storage tank is designed for a maximum operating pressure of 5 bar and features two sockets for electric heating elements. Additional connections are positioned to optimize return flow and maintain temperature stratification.\u003c\/p\u003e  \u003cp\u003eThe design reduces thermal mixing, thus enabling high utilization of the stored heat across different temperature zones.\u003c\/p\u003e  \u003ch3\u003eInsulation options\u003c\/h3\u003e  \u003cp\u003eSeveral insulation options are available for the SPS buffer tank: 100 mm STS EPS (efficiency class C), 130 mm STS EPS AirPor® (efficiency class B), or 150 mm PU super rigid foam (efficiency class A) for tank sizes from 600 to 1000 liters. All insulations are supplied with a silver-gray plastic jacket and a sealing strip.\u003c\/p\u003e  \u003cp\u003eThe insulation is precisely fitted and removable to facilitate installation and maintenance. Depending on the design, this can significantly reduce heat loss.\u003c\/p\u003e  \u003ch3\u003eEPS AirPor® gray polystyrene foam\u003c\/h3\u003e  \u003cp\u003eEPS AirPor® insulation combines polystyrene foam with added graphite, resulting in improved heat reflection and reduced heat loss. The 130 mm version (110 mm EPS + 20 mm fleece) meets energy efficiency class B, while the 100 mm version (80 mm EPS + 20 mm fleece) meets energy efficiency class C.\u003c\/p\u003e  \u003cp\u003eAdvantages include up to 30% reduced heat loss compared to conventional insulation materials, easy and quick installation, 100% recyclability, and additional floor and lid insulation. The thermal conductivity according to DIN EN 12667 is 0.0316 W\/mK; fire protection class according to DIN 4102: B2.\u003c\/p\u003e  \u003ch3\u003ePU super-rigid foam insulation\u003c\/h3\u003e  \u003cp\u003eThe PU super rigid foam insulation, with a thickness of 150 mm, offers excellent insulation properties and achieves energy efficiency class A. It consists of 150 mm polyurethane combined with 10 mm polyester fiber fleece and is covered with a PS jacket in RAL 9006.\u003c\/p\u003e  \u003cp\u003eThe fleece lamination minimizes convection losses at the container walls, lid, and joints. The insulation is removable, skin-friendly, environmentally friendly, and also 100% recyclable. Thermal conductivity according to DIN EN 12667: 0.023 W\/mK; fire protection class according to DIN 4102: B2.\u003c\/p\u003e  \u003ch3\u003eAssembly \u0026amp; installation\u003c\/h3\u003e  \u003cp\u003eThe pre-assembled 90° angled sockets allow for easy and secure connection to heating circuits and convenient connection of multiple storage tanks to battery packs. The stand ring design simplifies on-site installation.\u003c\/p\u003e  \u003cp\u003eThanks to removable insulation and precisely fitting locking strips, installation is quick and maintenance-friendly.Two sockets for electric heating cartridges allow the use of additional electric reheating if required.\u003c\/p\u003e  \u003ch3\u003eAdvantages \u0026amp; Operation\u003c\/h3\u003e  \u003cp\u003eThe SPS stratified buffer tank combines robust steel quality with sophisticated stratification technology and various insulation options, allowing it to be optimized for different requirements. Reduced heat loss, improved stratification, and flexible connection options increase efficiency and operational reliability.\u003c\/p\u003e  \u003cp\u003eOverall, the storage system offers a durable, economical solution for energy storage in modern heat supply systems and facilitates the integration of renewable heat sources as well as the optimization of consumption and operating costs.\u003c\/p\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eStratified storage tanks without 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":55330110767452,"sku":"SPS600+SISOC","price":955.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 130mm","offer_id":55330110800220,"sku":"SPS600+SISOB","price":1138.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 150mm","offer_id":55330110832988,"sku":"SPS600+SISOA","price":1307.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 100mm","offer_id":55330110865756,"sku":"SPS800+SISOC","price":1004.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 130mm","offer_id":55330110898524,"sku":"SPS800+SISOB","price":1187.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 150mm","offer_id":55330110931292,"sku":"SPS800+SISOA","price":1356.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters \/ 100mm","offer_id":55330110964060,"sku":"SPS1000+SISOC","price":1055.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters \/ 130mm","offer_id":55330110996828,"sku":"SPS1000+SISOB","price":1238.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters \/ 150mm","offer_id":55330111029596,"sku":"SPS1000+SISOA","price":1407.0,"currency_code":"EUR","in_stock":true},{"title":"1,500 liters \/ 100mm","offer_id":55330111062364,"sku":"SPS1500+SISOC","price":1515.0,"currency_code":"EUR","in_stock":true},{"title":"1,500 liters \/ 130mm","offer_id":55330111095132,"sku":"SPS1500+SISOB","price":1698.0,"currency_code":"EUR","in_stock":true},{"title":"2,000 liters \/ 100mm","offer_id":55330111160668,"sku":"SPS2000+SISOC","price":2005.0,"currency_code":"EUR","in_stock":true},{"title":"2,000 liters \/ 130mm","offer_id":55330111193436,"sku":"SPS2000+SIOSB","price":2188.0,"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-1-warmetauscher","title":"Layers - buffer storage with 1 heat exchanger","description":"\u003ch2\u003eSPSR stratified buffer storage tank – Efficient storage solution for heating, solar and solid fuel systems\u003c\/h2\u003e  \u003ch3\u003eProduct overview\u003c\/h3\u003e  \u003cp\u003eThe SPSR stratified buffer storage tank is a robustly constructed hot water storage tank for heating systems, solar thermal systems, and combined heat and power plants. It combines a stable tank design with integrated stratification technology and a permanently welded smooth-tube heat exchanger, thus ensuring high system efficiency and reliable stratification of the return flows.\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\/SPSR_480_1384_3000_480x480.webp?v=1756291781\" alt=\"\" style=\"margin-right: 16px; margin-bottom: 16px; float: left;\"\u003e\u003c\/div\u003e  \u003cp\u003eThe tank and smooth-tube heat exchanger are made of high-quality S235JRG2 steel according to DIN 4753 and EN 12897. The interior is left untreated, while the outer shell is primed; the tank rests securely on a base ring. The tank is designed for a maximum operating pressure of 5 bar and features two ports for electric heating elements.\u003c\/p\u003e  \u003ch3\u003eLayer technology and heat exchangers\u003c\/h3\u003e  \u003cp\u003eFor optimized stratification, stratification channels are integrated into the storage tank, and a stratification plate is welded in. These components reduce mixing and improve temperature stratification, thereby increasing the usable heat output. The permanently welded-in smooth-tube heat exchanger ensures efficient heat exchange for solar and heating circuits.\u003c\/p\u003e  \u003ch3\u003eConnections and ease of assembly\u003c\/h3\u003e  \u003cp\u003eThe 90° angled socket arrangement simplifies the assembly and connection of multiple buffer tanks. This enables compact system layouts and easy system couplings. The arrangement of the connections and the base ring further simplify installation and subsequent maintenance.\u003c\/p\u003e  \u003ch3\u003eInsulation options – EPS AirPor® grey\u003c\/h3\u003e  \u003cp\u003eEPS AirPor® grey polystyrene foam insulation is available in 100 mm (efficiency class C) and 130 mm (efficiency class B) thicknesses. The insulation combines EPS with an additional fleece layer and an admixture of graphite nanoparticles, which significantly reduce heat loss through increased heat reflection.\u003c\/p\u003e  \u003cp\u003eThanks to its lightweight, precisely fitting design, the insulation is quick to install, mechanically robust, and 100% recyclable. The overall insulation thickness, along with additional bottom and top insulation, ensures significant energy savings during operation.\u003c\/p\u003e  \u003ch3\u003eInsulation option – PU super-rigid foam\u003c\/h3\u003e  \u003cp\u003eThe 150 mm thick PU super rigid foam insulation (for 600–1000 l storage tanks) combines excellent insulation performance with a PS jacket in RAL 9006 and a clamping strip for easy installation. A 10 mm polyester fiber fleece prevents convection losses at the tank walls, lid, and joints.\u003c\/p\u003e  \u003cp\u003eWith a thermal conductivity of approximately 0.023 W\/mK and efficiency class A, this insulation offers the best insulation performance in the range and is also recyclable and skin-friendly.\u003c\/p\u003e  \u003ch3\u003eTechnical specifications and equipment\u003c\/h3\u003e  \u003cp\u003eThe SPSR is equipped with stratification channels, a stratification plate, and a permanently installed smooth-tube heat exchanger. Further features include a raw interior, primed exterior, two sockets for electric heating elements, and design for an operating pressure of up to 5 bar.\u003c\/p\u003e  \u003ch3\u003eAdvantages and areas of application\u003c\/h3\u003e  \u003cp\u003eThe combination of targeted layering technology, high-quality steel construction, and effective insulation increases the efficiency of heating systems and reduces heat loss. Applications include heating systems, solid fuel boilers, solar thermal systems, combined heat and power plants, and combined energy systems that rely on reliable temperature stratification.\u003c\/p\u003e  \u003ch3\u003eEnvironment, safety and standards\u003c\/h3\u003e  \u003cp\u003eThe materials used are environmentally friendly and largely recyclable.The insulation materials meet common fire protection requirements (DIN 4102 B2) and thermal conductivity requirements according to DIN EN 12667, meaning that the storage unit meets high safety and environmental standards.\u003c\/p\u003e  \u003ch3\u003eSelection, assembly instructions and service\u003c\/h3\u003e  \u003cp\u003eChoose the appropriate storage capacity and insulation option according to your system requirements; the standardized socket arrangement facilitates integration. For optimal performance, professional installation by trained personnel and consideration of the connection configurations during system planning are recommended.\u003c\/p\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eStratified storage tank with 1 heat exchanger 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":55335188267356,"sku":"SPSR600+SISOC","price":1155.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 130mm","offer_id":55335188300124,"sku":"SPSR600+SISOB","price":1338.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 150mm","offer_id":55335188332892,"sku":"SPSR600+SISOA","price":1507.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 100mm","offer_id":55335188365660,"sku":"SPSR800+SISOC","price":1205.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 130mm","offer_id":55335188398428,"sku":"SPSR800+SISOB","price":1388.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 150mm","offer_id":55335188431196,"sku":"SPSR800+SISOA","price":1557.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters \/ 100mm","offer_id":55335188463964,"sku":"SPSR1000+SISOC","price":1305.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters \/ 130mm","offer_id":55335188496732,"sku":"SPSR1000+SISOB","price":1488.0,"currency_code":"EUR","in_stock":true},{"title":"1,000 liters \/ 150mm","offer_id":55335188529500,"sku":"SPSR1000+SISOA","price":1657.0,"currency_code":"EUR","in_stock":true},{"title":"1,500 liters \/ 100mm","offer_id":55335188562268,"sku":"SPSR1500+SISOC","price":1815.0,"currency_code":"EUR","in_stock":true},{"title":"1,500 liters \/ 130mm","offer_id":55335188595036,"sku":"SPSR1500+SISOB","price":1998.0,"currency_code":"EUR","in_stock":true},{"title":"2,000 liters \/ 100mm","offer_id":55335188660572,"sku":"SPSR2000+SISOC","price":2265.0,"currency_code":"EUR","in_stock":true},{"title":"2,000 liters \/ 130mm","offer_id":55335188693340,"sku":"SPSR2000+SISOB","price":2448.0,"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"},{"product_id":"heizwasser-pufferspeicher","title":"Heating water buffer tank","description":"\u003ch2\u003eBuffer storage tank WGJ-BE 800\/1000 without WT\u003c\/h2\u003e  \u003ch3\u003eProduct overview\u003c\/h3\u003e  \u003cp\u003eThe WGJ-BE buffer storage tank for heating water is a robust heat storage container for central heating systems, solar thermal systems, and heat pumps. It collects and stores excess heat, compensates for fluctuations in output, and improves the efficiency of the heating system.\u003c\/p\u003e  \u003cp\u003eAvailable in two versions (WGJ-BE 800 and WGJ-BE 1000), the \u003cstrong\u003eBuffer storage\u003c\/strong\u003e for larger heating circuits and offers a durable, easy-to-integrate solution for heating installations.\u003c\/p\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003cp\u003eWGJ-BE 800: Storage volume approx. 710 l, standby losses approx. 62 W, ​​weight ~143 kg. WGJ-BE 1000: Storage volume approx. 830 l, standby losses approx. 71 W, weight ~160 kg. Maximum operating pressure: 0.3 MPa; Maximum operating temperature: 80 °C.\u003c\/p\u003e  \u003cp\u003eConnection dimensions: Connection spigot (KP) internal thread 1½\u0026quot;, heating element connection (MG) internal thread 1½\u0026quot;, temperature sensor connection (CT) 3\/8\",  Drain (ZS) Internal thread 3\/4\".\u003c\/p\u003e  \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/TDB_EBE800_1000_744_324.webp?v=1759317714\" alt=\"\"\u003e\u003c\/p\u003e  \u003ch3\u003eMaterial and insulation\u003c\/h3\u003e  \u003cp\u003eThe tank is made of steel (raw interior) with an external corrosion-resistant coating and features 100 mm thick thermal insulation made of soft polystyrene foam. The outer shell is a laminated casing to ensure dimensional stability and an attractive appearance.\u003c\/p\u003e  \u003ch3\u003eApplications and advantages\u003c\/h3\u003e  \u003cp\u003eThe WGJ-BE \u003cstrong\u003eBuffer storage \u003c\/strong\u003eIt is suitable for integration with boilers, solar thermal systems and heat pumps. It absorbs excess heat in the short term, prevents frequent cycling of burners and heat generators, and thus contributes to the lifespan and efficiency of the system.\u003c\/p\u003e  \u003cp\u003eThanks to its large volume and low heat losses, the storage tank ensures stable flow temperatures and better controllability of the heating system, especially with variable heat generation.\u003c\/p\u003e  \u003ch3\u003eSafety and operating conditions\u003c\/h3\u003e  \u003cp\u003eThe storage tank may only be operated with a functioning safety valve (opening pressure 0.3 MPa). Ideally, this valve should be installed in the heating water return line and must not have any shut-off valves between the valve and the tank. The arrow on the valve body must indicate the flow direction.\u003c\/p\u003e  \u003cp\u003eDuring operation, water may briefly escape from the safety valve—this indicates correct function and must never be blocked. The system must not be operated without a functioning safety valve, as this could result in danger and damage.\u003c\/p\u003e  \u003ch3\u003eInstallation and electric heating\u003c\/h3\u003e  \u003cp\u003eDuring the warranty period, only electric heaters with insulated heating elements may be used (e.g., ZUG ELEKTROMET type EJK). Single-phase heating cartridges are available in 230 V versions with power ratings of 1.5\/2.0\/3.0 kW; three-phase versions are available in 400 V versions with 3.0\/4.5\/6.0\/9.0 kW. Connection must be carried out according to the wiring diagrams and by a qualified electrician.\u003c\/p\u003e  \u003cp\u003eImportant: Do not plug in the power cord until the storage tank is completely filled with water. Observe the electrical safety information and the installation instructions for the electric heater. During the warranty period, only approved, insulated heating elements must be used.\u003c\/p\u003e  \u003ch3\u003eMaintenance and service\u003c\/h3\u003e  \u003cp\u003eCheck the safety valve's proper function at least once a month and before each restart after a prolonged shutdown. Repairs to the water system must only be carried out by qualified personnel. Regular visual inspections of the insulation and connections increase operational safety.\u003c\/p\u003e  \u003ch3\u003eWarranty and information\u003c\/h3\u003e  \u003cp\u003eBefore installation and commissioning, the enclosed installation and operating instructions as well as the warranty conditions should be read carefully.The manufacturer reserves the right to make constructive changes as part of product modernization, which may not necessarily be included in these instructions.\u003c\/p\u003e  \u003cp\u003eIf you have questions about compatibility with existing components or about selecting the right electric auxiliary heater, we will be happy to advise you — please contact your specialist installer or our customer service department.\u003c\/p\u003e","brand":"Elektromet","offers":[{"title":"800 liters","offer_id":55620356473180,"sku":"EBE800","price":1102.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters","offer_id":55620356505948,"sku":"EBE1000","price":1150.0,"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":"heizwasser-pufferspeicher-500-liter","title":"Heating water buffer tank 500 liters","description":"\u003ch2\u003eWGJ-B PSTW 500 buffer storage tank for heating water: high-performance heat storage for heating systems\u003c\/h2\u003e  \u003ch3\u003eProduct overview\u003c\/h3\u003e  \u003cp\u003eThe WGJ-B PSTW 500 buffer storage tank is a robust, steel-walled tank for receiving, storing, and controlled release of heating water or other liquids compatible with steel. It acts as a buffer between heat generators (e.g., central boilers, solar collectors, heat pumps) and the heating circuit, compensating for fluctuations in output and protecting the heating system.\u003c\/p\u003e  \u003cp\u003eThe storage tank has a nominal volume of 498 dm³ and is designed for a maximum operating pressure of 0.3 MPa. The interior of the tank is unfinished, while the exterior is painted to prevent corrosion.\u003c\/p\u003e  \u003ch3\u003eConstruction and materials\u003c\/h3\u003e  \u003cp\u003eThe tank is made of black sheet steel; insulation is provided either by polystyrene foam or a rubber mat permanently attached to the tank walls. The insulation is protected by a skay-coated outer jacket.\u003c\/p\u003e  \u003cp\u003ePlease note: Removing the insulation permanently attached to the pressure vessel will void the product warranty. The shell surface is made of a rock-like material.\u003c\/p\u003e  \u003ch3\u003eTechnical specifications (brief overview)\u003c\/h3\u003e  \u003cp\u003eVolume: 498 dm³. Pipe connections: Heating element\/connection MG\/KP 1 1\/2”, temperature sensor CT ⅜”, drain ZS ¾”. Standby losses (polystyrene foam): approx. 52–72 W, with rubber mat: approx. 47–65 W (depending on model).\u003c\/p\u003e  \u003cp\u003eWeight: 120 kg. Maximum operating parameters: pressure pr = 0.3 MPa; temperature ranges depending on insulation: with polystyrene foam tr min = 15 °C to tr max = 80 °C, with rubber mat tr min = 5 °C to tr max = 70 °C.\u003c\/p\u003e  \u003ch3\u003eAreas of application\u003c\/h3\u003e  \u003cp\u003eThe storage tank is designed for central heating systems, combinations with solar thermal systems, heat pump systems, and as an intermediate storage tank for boiler systems. It is suitable wherever excess heat needs to be temporarily stored and released as required.\u003c\/p\u003e  \u003ch3\u003eSafety regulations\u003c\/h3\u003e  \u003cp\u003eOperation in closed heating systems is only permitted with a functioning safety valve (opening pressure 0.3 MPa). Ideally, this valve should be installed in the heating water return line and must not be separated from the tank by shut-off valves. A functioning safety valve may exhibit intermittent water release – a blocked outlet must be strictly avoided.\u003c\/p\u003e  \u003cp\u003eUse without a safety valve or with a defective valve is prohibited, as this can lead to damage or hazards. When using safety valves that return water to the supply network, the downstream system must be able to withstand temperatures up to +90 °C at a distance of at least 5 m.\u003c\/p\u003e  \u003ch3\u003eInstallation and connection\u003c\/h3\u003e  \u003cp\u003eConnecting the safety valve to the cold water supply is mandatory; the arrow marking on the valve body must indicate the flow direction. No shut-off valves may be installed between the safety valve and the tank. Repairs to the water system may only be carried out by qualified personnel.\u003c\/p\u003e  \u003ch3\u003eElectric heating: Installation and instructions\u003c\/h3\u003e  \u003cp\u003eDuring the warranty period, only electric heating elements with insulated heating components may be used (e.g., type EJK from ZUG ELEKTROMET). Installation and connection must be carried out in accordance with the respective installation and operating instructions for the electric heater. Single-phase heating elements (230 V) are available in power ratings of 1.5\/2.0\/3.0 kW; three-phase versions (400 V) are available in 3.0\/4.5\/6.0 kW.\u003c\/p\u003e  \u003cp\u003eSingle-phase heaters must be connected to a grounded 230 V\/16 A socket. The power plug must not be inserted until the storage tank is completely filled with water. Three-phase heating elements must be connected by a qualified electrician according to the wiring diagram.\u003c\/p\u003e  \u003ch3\u003eMaintenance and operation\u003c\/h3\u003e  \u003cp\u003eCheck the correct function of the safety valve at least once a month and before each restart. Maintenance and repair work must only be carried out by qualified personnel to avoid compromising operational safety and warranty claims.\u003c\/p\u003e  \u003cp\u003eIn case of visible leaks, unusual noises, or abnormal pressure fluctuations, immediately shut down the system and have it inspected by a qualified technician. Observe the manufacturer's instructions for electric heaters and the guidelines for filling and draining procedures.\u003c\/p\u003e  \u003ch3\u003eWarranty and safety information\u003c\/h3\u003e  \u003cp\u003eThe manufacturer reserves the right to make structural changes as part of product modernization, and these may not necessarily be reflected in the manual. Any tampering with safety-relevant components, such as removing insulation or making improper electrical modifications, will void the warranty.\u003c\/p\u003e  \u003cp\u003eOperation outside the specified pressure and temperature limits is not permitted. Ensure compliance with the prescribed operating parameters and consult qualified personnel if you have any questions.\u003c\/p\u003e","brand":"Elektromet","offers":[{"title":"Default Title","offer_id":55620677009756,"sku":"EBE500","price":792.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/heizwasser-pufferspeicher-500-liter-1800680.webp?v=1770692014"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/collections\/pufferspeicher-3264801.jpg?v=1770691914","url":"https:\/\/ro.gemashop.de\/en\/collections\/puffer-storage-tank.oembed","provider":"GEMA Shop","version":"1.0","type":"link"}