{"product_id":"holzvergaserkessel-defro-optima-hg-19-kw","title":"Wood Gasification Boiler Defro Optima HG 19 kW","description":"\u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eProduct Overview \u0026 Application\u003c\/h2\u003e \u003cp\u003eThe Defro Optima HG 19 kW wood gasification boiler is a manually fed central heating boiler designed for operation with split logs. It is intended for water-based heating systems and serves as a heat generator in systems where the generated heat is controlled and distributed via a buffer tank.\u003c\/p\u003e \u003cp\u003eThe Optima HG model series is designed for use with hardwood split logs. The boiler operates on the wood gasification principle, making it an attractive option for operators who want a classic log wood heating system with structured combustion technology.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eTechnology \u0026 Equipment\u003c\/h2\u003e \u003cp\u003eIn the Defro Optima HG, the wood is degassed in the upper combustion chamber. The resulting wood gases are directed through a combustion nozzle into the lower combustion chamber, where they are burned off. The combustion chambers are lined with fireclay bricks designed for high temperatures in the combustion zone.\u003c\/p\u003e \u003cp\u003eThe flue gases are routed through tubular heat exchangers. Specially shaped turbulators support the heat exchange process. An induced draft fan extracts the flue gases from the boiler, while the electronic control system regulates operation to the set boiler temperature. Standard equipment also includes a safety temperature limiter and an integrated safety heat exchanger.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eEveryday Advantages\u003c\/h2\u003e \u003cp\u003eThe wide loading door makes it easier to load split logs. With separate loading, combustion, and ash zones, the boiler is practically designed for regular operation and recurring cleaning. The integrated cleaning mechanism for the heat exchanger supports proper maintenance of the boiler.\u003c\/p\u003e \u003cp\u003eFor ongoing heating operation, it is important that the generated heat is continuously absorbed by the heating system. Therefore, operation with a buffer tank is intended. This allows the heat to be stored temporarily and later released to the heating system or domestic hot water preparation.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eSystem Integration \u0026 Compatibility\u003c\/h2\u003e \u003cp\u003eThe Defro Optima HG 19 kW is designed for hot water heating systems with a flow temperature of up to 90 °C. Installation is possible in closed heating systems according to DIN 12828. For safe and material-friendly operation, a professionally designed hydraulic system with return temperature boosting is required.\u003c\/p\u003e \u003cp\u003eThe boiler must be combined with a suitable buffer tank. Additionally, the requirements for the chimney, boiler room, fresh air supply, safety group, and hydraulic integration must be considered during system planning.\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 Specifications at a Glance\u003c\/h2\u003e \u003cp\u003eThe following technical data refers to the Defro Optima HG 19 kW and has been reduced to the technical meta fields active in the shop.\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\"\u003e19 kW\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eFuel\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003eSplit logs \/ Hardwood\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eCombustion Technology\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003eWood gasification\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eEfficiency\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e92.3 % at full load\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eMax. Flow Temperature\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e90 °C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eMax. Operating Pressure\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e3.0 bar\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eLog Length\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003emax. 365 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 according to EN 303-5\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eDraft Requirement\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e16 Pa\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eFlue Gas Temperature\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e125 °C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eFlue Pipe Connection\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003eØ 130 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eSafety Heat Exchanger\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003eIntegrated\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eBuffer Tank Recommended\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003eYes, buffer tank operation required\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eHeight\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e1460 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eWidth\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e620 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eDepth\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e995 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eWeight\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003eapprox. 430 kg\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eVoltage\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e230 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eFrequency\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e50 Hz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eFuse Protection\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e3.15 A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003ePower Consumption\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003emax. 35 W\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003ePhases\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003e1N\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd class=\"product-th__label\"\u003eElectronic Control\u003c\/td\u003e \u003ctd class=\"product-th__value\"\u003eYes\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 of the wood gasification boiler should be carried out by qualified specialist personnel. Integration requires a suitable installation room, adequate fresh air supply, a proper chimney connection, and professionally designed hydraulic safety equipment.\u003c\/p\u003e \u003cp\u003eOperation requires return temperature boosting with a return temperature of at least 65 °C. The boiler is intended for closed heating systems and must be combined with a buffer tank.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eNotes\u003c\/h2\u003e \u003cp\u003eThe intended fuel is hardwood split logs with suitable residual moisture. The use of other fuels or unsuitable materials is not part of the intended use.\u003c\/p\u003e \u003cp\u003eThe manufacturer's documentation must be observed before commissioning, during operation, and for maintenance. Regular cleaning and correctly designed heat dissipation are important for stable and long-lasting system operation.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"gema-section\"\u003e \u003ch2\u003eScope of Delivery\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDefro Optima HG 19 kW wood gasification boiler\u003c\/li\u003e \u003cli\u003eInstallation and operating instructions\u003c\/li\u003e \u003cli\u003eWarranty card\u003c\/li\u003e \u003cli\u003eElectronic control unit\u003c\/li\u003e \u003cli\u003eInduced draft fan\u003c\/li\u003e \u003cli\u003eAnalog boiler thermometer\u003c\/li\u003e \u003cli\u003eCleaning mechanism for heat exchanger cleaning\u003c\/li\u003e \u003cli\u003eLoading and combustion chamber lining\u003c\/li\u003e \u003cli\u003eCombustion nozzle\u003c\/li\u003e \u003cli\u003eCleaning tool\u003c\/li\u003e \u003cli\u003eIntegrated safety heat exchanger\u003c\/li\u003e \u003cli\u003eTurbulators\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e","brand":"Defro","offers":[{"title":"Default Title","offer_id":49552796615004,"sku":"DOHG19","price":4486.81,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/defro-optima-hg-holzvergaserkessel-19-kw-nachhaltige-holzheizung-2807375.png?v=1770692789","url":"https:\/\/si.gemashop.de\/products\/holzvergaserkessel-defro-optima-hg-19-kw","provider":"GEMA Shop","version":"1.0","type":"link"}