{"product_id":"atmos-dc25gsp-holz-pelletkessel-25kw","title":"ATMOS DC25GSP 25 kW Wood and Pellet Combination Boiler","description":"\u003ch2\u003eATMOS DC25GSP Wood and Pellet Boiler – efficient combination boiler with 25 kW\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eATMOS DC25GSP\u003c\/strong\u003e is a modern combination boiler for burning firewood and wood pellets. The heating boiler combines the efficiency of a wood gasification boiler with the convenience of an automatic pellet burner. This allows flexible switching between manual wood operation and automatic pellet operation.\u003c\/p\u003e\n\u003cp\u003eWith a wood output of \u003cstrong\u003e25 kW\u003c\/strong\u003e, the boiler is particularly suitable for single-family homes and larger residential buildings. The combination of wood gasification and pellet technology enables reliable and economical heat supply.\u003c\/p\u003e\n\u003ch3\u003eHighlights and Advantages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e⭐ Combination boiler for \u003cstrong\u003efirewood and wood pellets\u003c\/strong\u003e in one heating system\u003c\/li\u003e\n\u003cli\u003e⭐ Heating output up to \u003cstrong\u003e25 kW\u003c\/strong\u003e for single-family homes and larger buildings\u003c\/li\u003e\n\u003cli\u003e⭐ Automatic pellet burner start possible after the wood has burned out\u003c\/li\u003e\n\u003cli\u003e⭐ High efficiency of over \u003cstrong\u003e92 %\u003c\/strong\u003e for efficient operation\u003c\/li\u003e\n\u003cli\u003e⭐ Boiler class 5 according to EN 303-5 for modern biomass heating systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplication Area \u0026 Target Audience\u003c\/h2\u003e\n\u003cp\u003eThe ATMOS DC25GSP is suitable for various heating systems in residential areas and is frequently used for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSingle-family homes\u003c\/li\u003e\n\u003cli\u003eTwo-family homes\u003c\/li\u003e\n\u003cli\u003eRenovations of existing heating systems\u003c\/li\u003e\n\u003cli\u003eNew builds with biomass heating\u003c\/li\u003e\n\u003cli\u003eHeating systems with buffer storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDue to the combination of wood and pellet operation, the heating boiler can be used flexibly. Firewood is manually refilled, while pellets can be fed automatically.\u003c\/p\u003e\n\u003ch2\u003eAdvantages in Everyday Use\u003c\/h2\u003e\n\u003cp\u003eThe combination boiler enables convenient use of two fuels. When heating with wood, the boiler operates as an efficient wood gasification boiler. As soon as the wood has burned out, the pellet burner can start automatically and continue the heating operation.\u003c\/p\u003e\n\u003cp\u003eThis keeps the heating system reliably in operation even when no wood is refilled. This increases comfort and reduces the manual effort required for heating.\u003c\/p\u003e\n\u003ch2\u003eTechnology \u0026 Equipment\u003c\/h2\u003e\n\u003cp\u003eThe ATMOS DC25GSP features a robust steel construction with a ceramic combustion chamber. Combustion is regulated via multiple thermostats and control components.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBoiler thermostat for output regulation\u003c\/li\u003e\n\u003cli\u003eFlue gas thermostat for controlling the induced draft fan\u003c\/li\u003e\n\u003cli\u003eSafety thermostat (STB) against overheating\u003c\/li\u003e\n\u003cli\u003eServo flap for automatic air regulation\u003c\/li\u003e\n\u003cli\u003eSlot for electronic heating control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe air supply and combustion are automatically adjusted to the fuel used, ensuring stable and efficient operation.\u003c\/p\u003e\n\u003ch2\u003eEfficiency \u0026 Environment\u003c\/h2\u003e\n\u003cp\u003eThe ATMOS DC25GSP achieves an efficiency of approximately \u003cstrong\u003e92.5 %\u003c\/strong\u003e in wood operation. In pellet operation, the efficiency is around \u003cstrong\u003e92.8 %\u003c\/strong\u003e. This allows particularly efficient use of the fuel.\u003c\/p\u003e\n\u003cp\u003eThe boiler meets the requirements of \u003cstrong\u003eboiler class 5 according to EN 303-5\u003c\/strong\u003e and complies with modern emission standards for biomass heating systems. :contentReference[oaicite:1]{index=1}\u003c\/p\u003e\n\u003ch2\u003eCompatibility \u0026 System Integration\u003c\/h2\u003e\n\u003cp\u003eThe combination boiler is typically installed together with a buffer storage tank. This allows the generated heat to be stored efficiently and distributed evenly throughout the building.\u003c\/p\u003e\n\u003cp\u003eThe ATMOS DC25GSP can be integrated into various heating systems:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBuffer storage\u003c\/li\u003e\n\u003cli\u003eRadiator heating systems\u003c\/li\u003e\n\u003cli\u003eUnderfloor heating systems\u003c\/li\u003e\n\u003cli\u003eDomestic hot water preparation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Data\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eATMOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eDC25GSP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eWood and Pellet Combination Boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWood Output\u003c\/td\u003e\n\u003ctd\u003e25 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePellet Output\u003c\/td\u003e\n\u003ctd\u003e6 – 20 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoiler Efficiency Wood\u003c\/td\u003e\n\u003ctd\u003e92.5 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoiler Efficiency Pellet\u003c\/td\u003e\n\u003ctd\u003e92.8 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Efficiency Class\u003c\/td\u003e\n\u003ctd\u003eA+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoiler Class\u003c\/td\u003e\n\u003ctd\u003e5 according to EN 303-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeating Surface\u003c\/td\u003e\n\u003ctd\u003e4.1 m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Chamber Volume\u003c\/td\u003e\n\u003ctd\u003e120 dm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Working Pressure Water\u003c\/td\u003e\n\u003ctd\u003e250 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoiler Weight\u003c\/td\u003e\n\u003ctd\u003e659 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlue Gas Connection\u003c\/td\u003e\n\u003ctd\u003e150 \/ 152 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Connection\u003c\/td\u003e\n\u003ctd\u003e230 V \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Class\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired Return Temperature\u003c\/td\u003e\n\u003ctd\u003e65 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e80 – 90 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAccessories \u0026 System Recommendations\u003c\/h2\u003e\n\u003cp\u003eFor efficient and safe operation, combination with suitable system components such as buffer storage, return temperature elevation, and safety groups is recommended.\u003c\/p\u003e\n\u003cdiv class=\"cross-sell\"\u003e\n\u003ch3\u003eSuitable System Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/gemashop.de\/collections\/pufferspeicher\"\u003eBuffer Storage\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/gemashop.de\/collections\/ruecklaufanhebung\"\u003eReturn Temperature Elevation\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/gemashop.de\/collections\/sicherheitsgruppe-heizung\"\u003eSafety Groups\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/gemashop.de\/collections\/pelletbrenner\"\u003ePellet Burner\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/gemashop.de\/collections\/heizungsregelung\"\u003eHeating Controls\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eInstallation and Safety Instructions\u003c\/h2\u003e\n\u003cp\u003eInstallation must only be carried out by a qualified heating contractor. National regulations as well as the manufacturer's installation and operating instructions must be observed.\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eCan the ATMOS DC25GSP burn wood and pellets?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes, the combination boiler is designed for firewood and wood pellets and can switch between both fuels.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat is the heating output?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eIn wood operation, the output is 25 kW. In pellet operation, the output range is between 6 and 20 kW.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eIs a buffer storage tank necessary?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eA buffer storage tank is recommended for efficient operation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhich fuels are approved?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eDry firewood with a residual moisture content of approximately 12–20% and wood pellets with a diameter of 6–8 mm are to be used.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eDoes the pellet burner start automatically?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe pellet burner can start automatically as soon as the loaded wood has burned out and heat is still required.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat power supply does the boiler require?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe combination boiler requires a mains voltage of 230 V at 50 Hz.\u003c\/p\u003e\n\u003c\/details\u003e\n\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\n\u003ch3\u003eDownload\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Bedienungsanleitung_Atmos_GSP.pdf?v=1722239801\" rel=\"noopener\" target=\"_blank\" title=\"Atmos GS Bedienungsanleitung\"\u003eOperating Instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca aria-label=\"Besuchen Sie eine Webseite über Zusatzinformationen Atmos GSP\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Bedienungsanleitung_ATMOS_GSP_Zusatz.pdf?v=1722239584\" rel=\"noopener\" target=\"_blank\" title=\"Zusatzinformationen Atmos GSP\"\u003eSupplement to Operating Instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca aria-label=\"Besuchen Sie eine Webseite über Explosionszeichnung GSP\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Explosionszeichnung_GSP.pdf?v=1722239520\" rel=\"noopener\" target=\"_blank\" title=\"Explosionszeichnung GSP\"\u003eExploded View Drawing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca aria-label=\"Besuchen Sie eine Webseite über Atmos Kombikessel Katalog\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/atmos_kombikessel_prospekt_2024.pdf?v=1722239610\" rel=\"noopener\" target=\"_blank\" title=\"Atmos Kombikessel Katalog\"\u003eCombination Boiler Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca aria-label=\"Besuchen Sie eine Webseite über Pellets Konformitätserklärung\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Konformitaetserklaerung-Pellets.pdf?v=1722239571\" rel=\"noopener\" target=\"_blank\" title=\"Pellets Konformitätserklärung\"\u003ePellet Conformity Declaration\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cp data-end=\"1109\" data-start=\"900\"\u003e👉 \u003cstrong data-end=\"950\" data-start=\"903\"\u003eOrder commissioning service now!\u003c\/strong\u003e\u003cbr data-end=\"953\" data-start=\"950\"\/\u003eWith the \"Commissioning by ATMOS\" service, you ensure that your boiler is optimally set up and all technical requirements are met.\u003c\/p\u003e\n\u003cp data-end=\"1305\" data-start=\"1111\"\u003eFurther information on the process, requirements, and services can be found in our article on \u003cstrong data-end=\"1304\" data-start=\"1209\"\u003e[\u003ca href=\"https:\/\/gemashop.de\/products\/atmos-inbetriebnahme\" rel=\"noopener\" target=\"_blank\" title=\"Atmos Inbetriebnahme\"\u003eATMOS Commissioning\u003c\/a\u003e]\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Atmos","offers":[{"title":"Default Title","offer_id":56991918031196,"sku":"01.02.26-0","price":53316.0,"currency_code":"RON","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/kombikessel-atmos-dc-gsp-forderfahig-6989909.png?v=1770692840","url":"https:\/\/ro.gemashop.de\/en\/products\/atmos-dc25gsp-wood-pellet-boiler-25kw","provider":"GEMA Shop","version":"1.0","type":"link"}