{"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 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 benefits\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 wood burn-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\u003eAreas of application \u0026 target group\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\u003eRenovation of existing heating systems\u003c\/li\u003e\n\u003cli\u003eNew buildings with biomass heating\u003c\/li\u003e\n\u003cli\u003eHeating systems with buffer storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThanks to the combination of wood and pellet operation, the boiler can be used flexibly. Firewood is added manually, while pellets can be fed automatically.\u003c\/p\u003e\n\u003ch2\u003eEveryday benefits\u003c\/h2\u003e\n\u003cp\u003eThe combination boiler allows convenient use of two fuels. When heating with wood, the boiler operates as an efficient wood gasification boiler. Once the wood has burned out, the pellet burner can start automatically and continue heating operation.\u003c\/p\u003e\n\u003cp\u003eThis keeps the heating system running reliably even when no wood is added. This increases comfort and reduces manual effort when heating.\u003c\/p\u003e\n\u003ch2\u003eTechnology \u0026 equipment\u003c\/h2\u003e\n\u003cp\u003eThe ATMOS DC25GSP has a robust steel construction with a ceramic combustion chamber. Combustion is controlled via several thermostats and control components.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBoiler thermostat for output control\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 control\u003c\/li\u003e\n\u003cli\u003eSlot for electronic heating control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAir 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 about \u003cstrong\u003e92.5 %\u003c\/strong\u003ein wood operation. In pellet operation, the efficiency is around \u003cstrong\u003e92.8 %\u003c\/strong\u003e. This ensures 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.\u003c\/p\u003e\n\u003ch2\u003eCompatibility \u0026 system integration\u003c\/h2\u003e\n\u003cp\u003eThe combination boiler is usually 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 tank\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 hopper 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 \u0026amp; system recommendation\u003c\/h2\u003e\n\u003cp\u003eFor efficient and safe operation, we recommend combining the boiler with suitable system components such as buffer tank, return temperature control, and safety groups.\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 tank\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/gemashop.de\/collections\/ruecklaufanhebung\"\u003eReturn temperature control\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 may only be carried out by a qualified heating contractor. The 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 log wood and wood pellets and can switch between the two 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 tank necessary?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eFor efficient operation, a buffer tank is recommended.\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 log wood with a residual moisture content of about 12–20 % and wood pellets with a diameter of 6–8 mm are 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 need?\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 rel=\"noopener\" title=\"Atmos GS Bedienungsanleitung\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Bedienungsanleitung_Atmos_GSP.pdf?v=1722239801\" target=\"_blank\"\u003eOperating instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca aria-label=\"Besuchen Sie eine Webseite über Zusatzinformationen Atmos GSP\" rel=\"noopener\" title=\"Zusatzinformationen Atmos GSP\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Bedienungsanleitung_ATMOS_GSP_Zusatz.pdf?v=1722239584\" target=\"_blank\"\u003eSupplement to the operating instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca aria-label=\"Besuchen Sie eine Webseite über Explosionszeichnung GSP\" rel=\"noopener\" title=\"Explosionszeichnung GSP\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Explosionszeichnung_GSP.pdf?v=1722239520\" target=\"_blank\"\u003eExploded view\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca aria-label=\"Besuchen Sie eine Webseite über Atmos Kombikessel Katalog\" rel=\"noopener\" title=\"Atmos Kombikessel Katalog\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/atmos_kombikessel_prospekt_2024.pdf?v=1722239610\" target=\"_blank\"\u003eCombination boiler brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca aria-label=\"Besuchen Sie eine Webseite über Pellets Konformitätserklärung\" rel=\"noopener\" title=\"Pellets Konformitätserklärung\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/Konformitaetserklaerung-Pellets.pdf?v=1722239571\" target=\"_blank\"\u003eDeclaration of conformity pellets\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 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 meets all technical requirements.\u003c\/p\u003e\n\u003cp data-end=\"1305\" data-start=\"1111\"\u003eFor more information on the process, requirements, and services, see our article on \u003cstrong data-end=\"1304\" data-start=\"1209\"\u003e[\u003ca rel=\"noopener\" title=\"Atmos Inbetriebnahme\" href=\"https:\/\/gemashop.de\/products\/atmos-inbetriebnahme\" target=\"_blank\"\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":10216.35,"currency_code":"EUR","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:\/\/mt.gemashop.de\/products\/atmos-dc25gsp-holz-pelletkessel-25kw","provider":"GEMA Shop","version":"1.0","type":"link"}