{"product_id":"defro-firewood-plus-19-kw","title":"Defro Firewood Plus 19 kW natural draft boiler","description":"\u003cp data-start=\"471\" data-end=\"751\"\u003eThe \u003cstrong data-start=\"475\" data-end=\"504\"\u003eDefro Firewood Plus 19 kW\u003c\/strong\u003e This is a high-performance natural draft boiler for firewood. With an efficiency of 92.4%, electronic primary air control, and an integrated safety heat exchanger, it offers efficient and reliable heating technology for single-family and multi-family homes.\u003c\/p\u003e  \u003chr data-start=\"753\" data-end=\"756\"\u003e  \u003ch2 data-start=\"758\" data-end=\"784\"\u003eHighlights\/Advantages\u003c\/h2\u003e  \u003cp data-start=\"786\" data-end=\"1144\"\u003e⭐ 92.4% efficiency – efficient heat recovery from the exhaust gases\u003cbr data-start=\"851\" data-end=\"854\"\u003e⭐ Energy efficiency class A+ – modern and economical wood heating\u003cbr data-start=\"923\" data-end=\"926\"\u003e⭐ Integrated safety heat exchanger – suitable for closed heating systems\u003cbr data-start=\"1005\" data-end=\"1008\"\u003e⭐ Electronic primary air control – precise combustion control\u003cbr data-start=\"1074\" data-end=\"1077\"\u003e⭐ Multiple connections to the chimney are possible – flexible installation\u003c\/p\u003e  \u003chr data-start=\"1146\" data-end=\"1149\"\u003e  \u003ch2 data-start=\"1151\" data-end=\"1181\"\u003eDetailed description\u003c\/h2\u003e  \u003ch3 data-start=\"1183\" data-end=\"1216\"\u003eArea of ​​application \u0026amp; Target audience\u003c\/h3\u003e  \u003cp data-start=\"1218\" data-end=\"1484\"\u003eThe Defro Firewood Plus 19 kW is a natural draft boiler for burning logs (hardwood, residual moisture 12–20%). With a nominal output of 19 kW, it is particularly suitable for larger single-family homes, apartment buildings, or renovation projects with higher heating requirements.\u003c\/p\u003e  \u003cp data-start=\"1486\" data-end=\"1582\"\u003eThe secondary air supply is adjustable on both sides, making it possible to place the unit close to a wall.\u003c\/p\u003e  \u003chr data-start=\"1584\" data-end=\"1587\"\u003e  \u003ch3 data-start=\"1589\" data-end=\"1613\"\u003eEveryday benefits\u003c\/h3\u003e  \u003cp data-start=\"1615\" data-end=\"1772\"\u003eThe electronic control system automatically regulates the primary air supply and can also control the boiler circulation pump and an optional induced draft fan.\u003c\/p\u003e  \u003cp data-start=\"1774\" data-end=\"1940\"\u003eLarge loading doors allow for convenient loading of logs up to 340 mm in length. An integrated sight glass allows visual monitoring of the gasifier flame.\u003c\/p\u003e  \u003chr data-start=\"1942\" data-end=\"1945\"\u003e  \u003ch3 data-start=\"1947\" data-end=\"1974\"\u003eTechnology \u0026amp; equipment\u003c\/h3\u003e  \u003cp data-start=\"1976\" data-end=\"2141\"\u003eThe boiler body is made of high-quality steel. The factory-installed safety heat exchanger allows for installation in closed heating systems.\u003c\/p\u003e  \u003cp data-start=\"2143\" data-end=\"2274\"\u003eThe required delivery pressure is 0.24 mbar. The boiler is suitable for multiple connections to a common chimney.\u003c\/p\u003e  \u003chr data-start=\"2276\" data-end=\"2279\"\u003e  \u003ch3 data-start=\"2281\" data-end=\"2305\"\u003eEfficiency \u0026amp; Environment\u003c\/h3\u003e  \u003cp data-start=\"2307\" data-end=\"2410\"\u003eWith a standard efficiency of 92.4%, the Firewood Plus 19 kW achieves energy efficiency class A+.\u003c\/p\u003e  \u003cp data-start=\"2412\" data-end=\"2543\"\u003eThe recommended minimum buffer storage capacity is 1000 liters to ensure efficient and low-emission operation.\u003c\/p\u003e  \u003chr data-start=\"2545\" data-end=\"2548\"\u003e  \u003ch3 data-start=\"2550\" data-end=\"2590\"\u003ecompatibility \u0026amp; System integration\u003c\/h3\u003e  \u003cp data-start=\"2592\" data-end=\"2630\"\u003eThe exhaust connection has a diameter of 159 mm.\u003c\/p\u003e  \u003cp data-start=\"2632\" data-end=\"2684\"\u003eThe flow and return lines are made with 1½\u0026quot; (IG) threads.\u003c\/p\u003e  \u003cp data-start=\"2686\" data-end=\"2764\"\u003eThe electronic control system is powered by a 230 V\/50 Hz supply.\u003c\/p\u003e  \u003cp data-start=\"2766\" data-end=\"2930\"\u003eSuitable accessories such as buffer tanks, thermal relief valves, safety groups and hydraulic connections can be found in our product range. \u003cstrong data-start=\"2914\" data-end=\"2929\"\u003egemashop.de\u003c\/strong\u003e.\u003c\/p\u003e  \u003chr data-start=\"2932\" data-end=\"2935\"\u003e  \u003ch2 data-start=\"2937\" data-end=\"2958\"\u003eTechnical data\u003c\/h2\u003e  \u003cdiv class=\"TyagGW_tableContainer\"\u003e  \u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e  \u003ctable data-start=\"2960\" data-end=\"3651\" class=\"w-fit min-w-(--thread-content-width)\"\u003e  \u003cthead data-start=\"2960\" data-end=\"2978\"\u003e  \u003ctr data-start=\"2960\" data-end=\"2978\"\u003e  \u003cth data-start=\"2960\" data-end=\"2970\" data-col-size=\"sm\" class=\"\"\u003efeature\u003c\/th\u003e  \u003cth data-start=\"2970\" data-end=\"2978\" data-col-size=\"sm\" class=\"\"\u003eValue\u003c\/th\u003e  \u003c\/tr\u003e  \u003c\/thead\u003e  \u003ctbody data-start=\"2999\" data-end=\"3651\"\u003e  \u003ctr data-start=\"2999\" data-end=\"3021\"\u003e  \u003ctd data-start=\"2999\" data-end=\"3012\" data-col-size=\"sm\"\u003eManufacturer\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3012\" data-end=\"3021\"\u003eDEFRO\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3022\" data-end=\"3051\"\u003e  \u003ctd data-start=\"3022\" data-end=\"3031\" data-col-size=\"sm\"\u003eModel\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3031\" data-end=\"3051\"\u003eFirewood Plus 19\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3052\" data-end=\"3098\"\u003e  \u003ctd data-start=\"3052\" data-end=\"3065\" data-col-size=\"sm\"\u003eProduct type\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3065\" data-end=\"3098\"\u003eNatural draft boiler \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3099\" data-end=\"3123\"\u003e  \u003ctd data-start=\"3099\" data-end=\"3114\" data-col-size=\"sm\"\u003eRated power\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3114\" data-end=\"3123\"\u003e19 kW\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3124\" data-end=\"3170\"\u003e  \u003ctd data-start=\"3124\" data-end=\"3137\" data-col-size=\"sm\"\u003efuel\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3137\" data-end=\"3170\"\u003eFirewood (hardwood 12–20%)\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3171\" data-end=\"3196\"\u003e  \u003ctd data-start=\"3171\" data-end=\"3186\" data-col-size=\"sm\"\u003eefficiency\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3186\" data-end=\"3196\"\u003e92.4%\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3197\" data-end=\"3228\"\u003e  \u003ctd data-start=\"3197\" data-end=\"3222\" data-col-size=\"sm\"\u003eEnergy efficiency class\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3222\" data-end=\"3228\"\u003eA+\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3229\" data-end=\"3255\"\u003e  \u003ctd data-start=\"3229\" data-end=\"3245\" data-col-size=\"sm\"\u003eboiler weight\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3245\" data-end=\"3255\"\u003e370 kg\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3256\" data-end=\"3284\"\u003e  \u003ctd data-start=\"3256\" data-end=\"3274\" data-col-size=\"sm\"\u003eExhaust gas temperature\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3274\" data-end=\"3284\"\u003e153 °C\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3285\" data-end=\"3316\"\u003e  \u003ctd data-start=\"3285\" data-end=\"3304\" data-col-size=\"sm\"\u003eExhaust gas mass flow\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3304\" data-end=\"3316\"\u003e15.0 g\/s\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3317\" data-end=\"3340\"\u003e  \u003ctd data-start=\"3317\" data-end=\"3330\" data-col-size=\"sm\"\u003eCO₂ content\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3330\" data-end=\"3340\"\u003e12.7%\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3341\" data-end=\"3383\"\u003e  \u003ctd data-start=\"3341\" data-end=\"3370\" data-col-size=\"sm\"\u003eRequired delivery pressure\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3370\" data-end=\"3383\"\u003e0.24 mbar\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3384\" data-end=\"3413\"\u003e  \u003ctd data-start=\"3384\" data-end=\"3401\" data-col-size=\"sm\"\u003eExhaust connection\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3401\" data-end=\"3413\"\u003eØ 159 mm\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3414\" data-end=\"3445\"\u003e  \u003ctd data-start=\"3414\" data-end=\"3435\" data-col-size=\"sm\"\u003eFlow\/Return\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3435\" data-end=\"3445\"\u003e1½\u0026quot; internal thread\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3446\" data-end=\"3490\"\u003e  \u003ctd data-start=\"3446\" data-end=\"3476\" data-col-size=\"sm\"\u003eFlow temperature min.\/max.\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3476\" data-end=\"3490\"\u003e75\/90 °C\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3491\" data-end=\"3530\"\u003e  \u003ctd data-start=\"3491\" data-end=\"3521\" data-col-size=\"sm\"\u003eMinimum return temperature\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3521\" data-end=\"3530\"\u003e65 °C\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3531\" data-end=\"3572\"\u003e  \u003ctd data-start=\"3531\" data-end=\"3562\" data-col-size=\"sm\"\u003eMinimum buffer capacity\u003c\/td\u003e  \u003ctd data-start=\"3562\" data-end=\"3572\" data-col-size=\"sm\"\u003e1000 l\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3573\" data-end=\"3608\"\u003e  \u003ctd data-start=\"3573\" data-end=\"3591\" data-col-size=\"sm\"\u003epower supply\u003c\/td\u003e  \u003ctd data-start=\"3591\" data-end=\"3608\" data-col-size=\"sm\"\u003e230 V\/50 Hz\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3609\" data-end=\"3651\"\u003e  \u003ctd data-start=\"3609\" data-end=\"3628\" data-col-size=\"sm\"\u003eDimensions (W x D x H)\u003c\/td\u003e  \u003ctd data-start=\"3628\" data-end=\"3651\" data-col-size=\"sm\"\u003e530 x 605 x 1230 mm\u003c\/td\u003e  \u003c\/tr\u003e  \u003c\/tbody\u003e  \u003c\/table\u003e  \u003c\/div\u003e  \u003c\/div\u003e  \u003chr data-start=\"3653\" data-end=\"3656\"\u003e  \u003ch2 data-start=\"3658\" data-end=\"3675\"\u003eScope of delivery\u003c\/h2\u003e  \u003cul data-start=\"3677\" data-end=\"3947\"\u003e  \u003cli data-start=\"3677\" data-end=\"3721\"\u003e  \u003cp data-start=\"3679\" data-end=\"3721\"\u003eDefro Firewood Plus 19 kW natural draft boiler\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3722\" data-end=\"3752\"\u003e  \u003cp data-start=\"3724\" data-end=\"3752\"\u003eAnalog boiler thermometer\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3753\" data-end=\"3787\"\u003e  \u003cp data-start=\"3755\" data-end=\"3787\"\u003eElectronic fire draft regulator\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3788\" data-end=\"3821\"\u003e  \u003cp data-start=\"3790\" data-end=\"3821\"\u003eChain for the fire regulator\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3822\" data-end=\"3843\"\u003e  \u003cp data-start=\"3824\" data-end=\"3843\"\u003eShort-circuit valve\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3844\" data-end=\"3870\"\u003e  \u003cp data-start=\"3846\" data-end=\"3870\"\u003eVertical grate insert\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3871\" data-end=\"3887\"\u003e  \u003cp data-start=\"3873\" data-end=\"3887\"\u003eWirbulators\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3888\" data-end=\"3910\"\u003e  \u003cp data-start=\"3890\" data-end=\"3910\"\u003eCleaning tool\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3911\" data-end=\"3947\"\u003e  \u003cp data-start=\"3913\" data-end=\"3947\"\u003eOperating and assembly instructions\u003c\/p\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003chr data-start=\"3949\" data-end=\"3952\"\u003e  \u003ch2 data-start=\"3954\" data-end=\"3989\"\u003eAssembly \u0026amp; Safety instructions\u003c\/h2\u003e  \u003cp data-start=\"3991\" data-end=\"4095\"\u003eInstallation and commissioning must only be carried out by a qualified specialist company.\u003c\/p\u003e  \u003cp data-start=\"4097\" data-end=\"4306\"\u003eTo comply with emission and efficiency requirements, a buffer storage tank with a capacity of at least 1000 liters must be provided. National regulations regarding hydraulic integration and the exhaust system must be observed.\u003c\/p\u003e  \u003chr data-start=\"4308\" data-end=\"4311\"\u003e  \u003ch2 data-start=\"4313\" data-end=\"4321\"\u003eFAQ\u003c\/h2\u003e  \u003cp data-start=\"4323\" data-end=\"4470\"\u003e\u003cstrong data-start=\"4323\" data-end=\"4380\"\u003e1. For which buildings is the 19 kW version suitable?\u003c\/strong\u003e\u003cbr data-start=\"4380\" data-end=\"4383\"\u003eFor larger single-family homes or smaller multi-family homes with higher heating requirements.\u003c\/p\u003e  \u003cp data-start=\"4472\" data-end=\"4590\"\u003e\u003cstrong data-start=\"4472\" data-end=\"4515\"\u003e2. What log length is suitable?\u003c\/strong\u003e\u003cbr data-start=\"4515\" data-end=\"4518\"\u003eFor the 19 kW version, the recommended log length is 300–340 mm.\u003c\/p\u003e  \u003cp data-start=\"4592\" data-end=\"4746\"\u003e\u003cstrong data-start=\"4592\" data-end=\"4651\"\u003e3. Is operation in a closed heating system possible?\u003c\/strong\u003e\u003cbr data-start=\"4651\" data-end=\"4654\"\u003eYes, the integrated safety heat exchanger allows operation in a closed system.\u003c\/p\u003e  \u003cp data-start=\"4748\" data-end=\"4843\"\u003e\u003cstrong data-start=\"4748\" data-end=\"4788\"\u003e4. Is a buffer storage tank required?\u003c\/strong\u003e\u003cbr data-start=\"4788\" data-end=\"4791\"\u003eYes, the recommended minimum capacity is 1000 liters.\u003c\/p\u003e  \u003cp data-start=\"4845\" data-end=\"4976\"\u003e\u003cstrong data-start=\"4845\" data-end=\"4896\"\u003e5. Can an induced draft fan be retrofitted?\u003c\/strong\u003e\u003cbr data-start=\"4896\" data-end=\"4899\"\u003eYes, an optional induced draft fan can be controlled via the control system.\u003c\/p\u003e  \u003cp data-start=\"4978\" data-end=\"5073\"\u003e\u003cstrong data-start=\"4978\" data-end=\"5025\"\u003e6. What type of power supply is required?\u003c\/strong\u003e\u003cbr data-start=\"5025\" data-end=\"5028\"\u003e230 V\/50 Hz for electronic control.\u003c\/p\u003e  \u003chr data-start=\"5075\" data-end=\"5078\"\u003e  \u003ch2 data-start=\"5080\" data-end=\"5090\"\u003eConclusion\u003c\/h2\u003e  \u003cp data-start=\"5092\" data-end=\"5306\"\u003eThe Defro Firewood Plus 19 kW is an efficient natural draft boiler with a robust design and modern control technology. A reliable solution for powerful and economical heating with firewood.\u003c\/p\u003e","brand":"Defro","offers":[{"title":"Default Title","offer_id":49417957310812,"sku":"DFW19","price":2776.13,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/defro-firewood-plus-19-kw-heizkessel-effizientes-heizen-mit-scheitholz-6387175.webp?v=1770692688","url":"https:\/\/si.gemashop.de\/products\/defro-firewood-plus-19-kw-en","provider":"GEMA Shop","version":"1.0","type":"link"}