{"product_id":"holzvergaserkessel-atmos-gs-25-25-kw","title":"Atmos GS 25 25 kW Wood Gasification Boiler","description":"\u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eProduct Overview \u0026 Application\u003c\/h2\u003e \u003cp\u003eThe Atmos GS 25 wood gasification boiler is a manually fed hot water heating boiler for logs, designed for heating single-family homes and similar properties. This model is part of the ATMOS GS series, operates with an exhaust fan, and is intended for systems where a classic wood heating system with a large fuel chamber, robust construction, and straightforward technology is required.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eTechnology \u0026 Features\u003c\/h2\u003e \u003cp\u003eThe boiler operates on the wood gasification principle with a ceramic-lined combustion chamber and an exhaust fan. Features include a large fuel shaft, an electromechanical controller with boiler and flue gas thermostats, a start-up flap, an integrated safety heat exchanger to prevent overheating, and a shutdown logic for the fan and charging pump after the burn cycle.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eEveryday Advantages\u003c\/h2\u003e \u003cp\u003eThe design accommodates long logs up to 530 mm, making reloading easier in daily use and reducing preparation effort compared to shorter log lengths. The ceramic combustion chamber, induced draft fan, and clear control structure support stable combustion, making the GS 25 a straightforward, robust solution for users who consciously choose to heat with logs.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eSystem Integration \u0026 Compatibility\u003c\/h2\u003e \u003cp\u003eThe Atmos GS 25 is designed as a full-load boiler for integration into a water-based heating system. For operation, the series requires a sufficiently warm return flow temperature and is optimized for use with a buffer tank; the documentation for the GS 25 specifies a minimum buffer volume of 500 liters.\u003c\/p\u003e \u003c\/div\u003e \u003cstyle\u003e .product-th{margin-top:2rem}.product-th h2{margin:0 0 1rem}.product-th__table{width:100%;border-collapse:separate;border-spacing:0}.product-th__table td{padding:.95rem 1rem;vertical-align:top}.product-th__label{font-weight:700;width:38%;color:#213670}.product-th__value{color:#1f2937}.product-th__table tr:nth-child(odd) td{background:#f4f7fb}.product-th__table tr:nth-child(even) td{background:#fafbfd} \u003c\/style\u003e \u003cdiv class=\"product-th\"\u003e \u003ch2\u003eTechnical Data at a Glance\u003c\/h2\u003e \u003cp\u003eThe key verified core data of the Atmos GS 25 in a compact overview.\u003c\/p\u003e \u003ctable class=\"product-th__table\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eNominal Output\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e25 kW\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eFuel\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003eWood\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eEnergy Efficiency Class\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003eA+\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eMax. Operating Pressure\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e2.5 bar\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eMax. Log Length\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e530 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eBoiler Class\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e5\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eDraft Requirement\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e23 Pa\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eFlue Pipe Connection\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e150\/152 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eHeight\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e1260 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eWidth\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e680 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eDepth\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e1045 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eVoltage \/ Frequency\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e230 V \/ 50 Hz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003ePower Consumption\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e50 W\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eInstallation\u003c\/h2\u003e \u003cp\u003eInstallation must be carried out in a suitable boiler room with adequate combustion air supply; installation in living spaces is not permitted. The system requires a suitable chimney, professional hydraulic integration with return temperature boosting, and coordinated integration of a buffer tank.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eNotes\u003c\/h2\u003e \u003cp\u003eFor intended operation, dry logs with a residual moisture content of approximately 12 to 20% must be used. According to the documentation, a minimum return temperature of 65 °C must be maintained during operation; the recommended boiler flow temperature is 80 to 90 °C.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eScope of Delivery\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eAtmos GS 25 Wood Gasification Boiler\u003c\/li\u003e \u003cli\u003eSteel brush with accessories\u003c\/li\u003e \u003cli\u003ePoker\u003c\/li\u003e \u003cli\u003eFill valve\u003c\/li\u003e \u003cli\u003eOperating and maintenance manual\u003c\/li\u003e \u003cli\u003eHoneywell FR 124 draft regulator\u003c\/li\u003e \u003cli\u003eAsh pan\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e","brand":"Atmos","offers":[{"title":"Default Title","offer_id":49423501492572,"sku":"01.05.25","price":129994.0,"currency_code":"CZK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/atmos-gs-holzvergaser-25-kw-effizienter-vergaserkessel-9301722.png?v=1770692563","url":"https:\/\/cz.gemashop.de\/en\/products\/atmos-gs-25-25-kw-wood-gasification-boiler","provider":"GEMA Shop","version":"1.0","type":"link"}