{"product_id":"defro-firewood-plus-15-kw-naturzugkessel-holzvergaser","title":"Defro Firewood Plus 15 kW natural draft boiler","description":"\u003cp data-start=\"471\" data-end=\"760\"\u003eThe \u003cstrong data-start=\"475\" data-end=\"504\"\u003eDefro Firewood Plus 15 kW\u003c\/strong\u003e This is a modern natural draft wood-burning stove with electronic primary air control and an integrated safety heat exchanger. With an efficiency of 92.3% and an energy efficiency rating of A+, it is ideally suited for new or existing single-family homes.\u003c\/p\u003e  \u003chr data-start=\"762\" data-end=\"765\"\u003e  \u003ch2 data-start=\"767\" data-end=\"793\"\u003eHighlights\/Advantages\u003c\/h2\u003e  \u003cp data-start=\"795\" data-end=\"1172\"\u003e⭐ 92.3% efficiency – efficient heat utilization and reduced fuel costs\u003cbr data-start=\"877\" data-end=\"880\"\u003e⭐ Energy efficiency class A+ – future-proof wood heating\u003cbr data-start=\"937\" data-end=\"940\"\u003e⭐ Integrated safety heat exchanger – suitable for closed heating systems\u003cbr data-start=\"1019\" data-end=\"1022\"\u003e⭐ Electronic primary air control – convenient combustion control\u003cbr data-start=\"1092\" data-end=\"1095\"\u003e⭐ Multiple connections possible at the chimney – flexible integration into existing buildings\u003c\/p\u003e  \u003chr data-start=\"1174\" data-end=\"1177\"\u003e  \u003ch2 data-start=\"1179\" data-end=\"1209\"\u003eDetailed description\u003c\/h2\u003e  \u003ch3 data-start=\"1211\" data-end=\"1244\"\u003eArea of ​​application \u0026amp; Target audience\u003c\/h3\u003e  \u003cp data-start=\"1246\" data-end=\"1505\"\u003eThe Defro Firewood Plus 15 kW is a natural draft boiler for burning logs (hardwood, residual moisture 12–20%). With its nominal output of 15 kW, it is particularly suitable for single-family homes with medium heating requirements or modernized existing buildings.\u003c\/p\u003e  \u003cp data-start=\"1507\" data-end=\"1617\"\u003eThe secondary air can be adjusted on both sides, allowing for placement close to a wall and flexible mounting conditions.\u003c\/p\u003e  \u003chr data-start=\"1619\" data-end=\"1622\"\u003e  \u003ch3 data-start=\"1624\" data-end=\"1648\"\u003eEveryday benefits\u003c\/h3\u003e  \u003cp data-start=\"1650\" data-end=\"1807\"\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=\"1809\" data-end=\"1996\"\u003eLarge loading doors ensure convenient loading of logs up to 290 mm in length. An integrated sight glass allows visual monitoring of the gasifier flame during operation.\u003c\/p\u003e  \u003chr data-start=\"1998\" data-end=\"2001\"\u003e  \u003ch3 data-start=\"2003\" data-end=\"2030\"\u003eTechnology \u0026amp; equipment\u003c\/h3\u003e  \u003cp data-start=\"2032\" data-end=\"2199\"\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=\"2201\" data-end=\"2332\"\u003eThe required delivery pressure is 0.20 mbar. The boiler is suitable for multiple connections to a common chimney.\u003c\/p\u003e  \u003chr data-start=\"2334\" data-end=\"2337\"\u003e  \u003ch3 data-start=\"2339\" data-end=\"2363\"\u003eEfficiency \u0026amp; Environment\u003c\/h3\u003e  \u003cp data-start=\"2365\" data-end=\"2468\"\u003eWith a standard efficiency of 92.3%, the Firewood Plus 15 kW achieves energy efficiency class A+.\u003c\/p\u003e  \u003cp data-start=\"2470\" data-end=\"2600\"\u003eThe recommended minimum buffer storage capacity is 800 liters to ensure efficient and low-emission operation.\u003c\/p\u003e  \u003chr data-start=\"2602\" data-end=\"2605\"\u003e  \u003ch3 data-start=\"2607\" data-end=\"2647\"\u003ecompatibility \u0026amp; System integration\u003c\/h3\u003e  \u003cp data-start=\"2649\" data-end=\"2687\"\u003eThe exhaust connection has a diameter of 159 mm.\u003c\/p\u003e  \u003cp data-start=\"2689\" data-end=\"2741\"\u003eThe flow and return lines are made with 1½\u0026quot; (IG) threads.\u003c\/p\u003e  \u003cp data-start=\"2743\" data-end=\"2821\"\u003eThe electronic control system is powered by a 230 V\/50 Hz supply.\u003c\/p\u003e  \u003cp data-start=\"2823\" data-end=\"2979\"\u003eSuitable accessories such as buffer tanks, thermal relief valves, safety groups or boiler circuit sets can be found in the product range at \u003cstrong data-start=\"2963\" data-end=\"2978\"\u003egemashop.de\u003c\/strong\u003e.\u003c\/p\u003e  \u003chr data-start=\"2981\" data-end=\"2984\"\u003e  \u003ch2 data-start=\"2986\" data-end=\"3007\"\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=\"3009\" data-end=\"3699\" class=\"w-fit min-w-(--thread-content-width)\"\u003e  \u003cthead data-start=\"3009\" data-end=\"3027\"\u003e  \u003ctr data-start=\"3009\" data-end=\"3027\"\u003e  \u003cth data-start=\"3009\" data-end=\"3019\" data-col-size=\"sm\" class=\"\"\u003efeature\u003c\/th\u003e  \u003cth data-start=\"3019\" data-end=\"3027\" data-col-size=\"sm\" class=\"\"\u003eValue\u003c\/th\u003e  \u003c\/tr\u003e  \u003c\/thead\u003e  \u003ctbody data-start=\"3048\" data-end=\"3699\"\u003e  \u003ctr data-start=\"3048\" data-end=\"3070\"\u003e  \u003ctd data-start=\"3048\" data-end=\"3061\" data-col-size=\"sm\"\u003eManufacturer\u003c\/td\u003e  \u003ctd data-start=\"3061\" data-end=\"3070\" data-col-size=\"sm\"\u003eDEFRO\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3071\" data-end=\"3100\"\u003e  \u003ctd data-start=\"3071\" data-end=\"3080\" data-col-size=\"sm\"\u003eModel\u003c\/td\u003e  \u003ctd data-start=\"3080\" data-end=\"3100\" data-col-size=\"sm\"\u003eFirewood Plus 15\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3101\" data-end=\"3147\"\u003e  \u003ctd data-start=\"3101\" data-end=\"3114\" data-col-size=\"sm\"\u003eProduct type\u003c\/td\u003e  \u003ctd data-start=\"3114\" data-end=\"3147\" data-col-size=\"sm\"\u003eNatural draft kettle \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3148\" data-end=\"3172\"\u003e  \u003ctd data-start=\"3148\" data-end=\"3163\" data-col-size=\"sm\"\u003eRated power\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3163\" data-end=\"3172\"\u003e15 kW\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3173\" data-end=\"3219\"\u003e  \u003ctd data-start=\"3173\" data-end=\"3186\" data-col-size=\"sm\"\u003efuel\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3186\" data-end=\"3219\"\u003eFirewood (hardwood 12–20%)\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3220\" data-end=\"3245\"\u003e  \u003ctd data-start=\"3220\" data-end=\"3235\" data-col-size=\"sm\"\u003eefficiency\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3235\" data-end=\"3245\"\u003e92.3%\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3246\" data-end=\"3277\"\u003e  \u003ctd data-start=\"3246\" data-end=\"3271\" data-col-size=\"sm\"\u003eEnergy efficiency class\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3271\" data-end=\"3277\"\u003eA+\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3278\" data-end=\"3304\"\u003e  \u003ctd data-start=\"3278\" data-end=\"3294\" data-col-size=\"sm\"\u003eboiler weight\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3294\" data-end=\"3304\"\u003e348 kg\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3305\" data-end=\"3333\"\u003e  \u003ctd data-start=\"3305\" data-end=\"3323\" data-col-size=\"sm\"\u003eExhaust gas temperature\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3323\" data-end=\"3333\"\u003e142 °C\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3334\" data-end=\"3365\"\u003e  \u003ctd data-start=\"3334\" data-end=\"3353\" data-col-size=\"sm\"\u003eExhaust gas mass flow\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3353\" data-end=\"3365\"\u003e12.5 g\/s\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3366\" data-end=\"3389\"\u003e  \u003ctd data-start=\"3366\" data-end=\"3379\" data-col-size=\"sm\"\u003eCO₂ content\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3379\" data-end=\"3389\"\u003e12.6%\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3390\" data-end=\"3432\"\u003e  \u003ctd data-start=\"3390\" data-end=\"3419\" data-col-size=\"sm\"\u003eRequired delivery pressure\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3419\" data-end=\"3432\"\u003e0.20 mbar\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3433\" data-end=\"3462\"\u003e  \u003ctd data-start=\"3433\" data-end=\"3450\" data-col-size=\"sm\"\u003eExhaust connection\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3450\" data-end=\"3462\"\u003eØ 159 mm\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3463\" data-end=\"3494\"\u003e  \u003ctd data-start=\"3463\" data-end=\"3484\" data-col-size=\"sm\"\u003eFlow\/Return\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3484\" data-end=\"3494\"\u003e1½\u0026quot; internal thread\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3495\" data-end=\"3539\"\u003e  \u003ctd data-start=\"3495\" data-end=\"3525\" data-col-size=\"sm\"\u003eFlow temperature min.\/max.\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3525\" data-end=\"3539\"\u003e75\/90 °C\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3540\" data-end=\"3579\"\u003e  \u003ctd data-start=\"3540\" data-end=\"3570\" data-col-size=\"sm\"\u003eMinimum return temperature\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3570\" data-end=\"3579\"\u003e65 °C\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3580\" data-end=\"3620\"\u003e  \u003ctd data-start=\"3580\" data-end=\"3611\" data-col-size=\"sm\"\u003eMinimum buffer capacity\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3611\" data-end=\"3620\"\u003e800 l\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3621\" data-end=\"3656\"\u003e  \u003ctd data-start=\"3621\" data-end=\"3639\" data-col-size=\"sm\"\u003epower supply\u003c\/td\u003e  \u003ctd data-col-size=\"sm\" data-start=\"3639\" data-end=\"3656\"\u003e230 V\/50 Hz\u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr data-start=\"3657\" data-end=\"3699\"\u003e  \u003ctd data-start=\"3657\" data-end=\"3676\" data-col-size=\"sm\"\u003eDimensions (W x D x H)\u003c\/td\u003e  \u003ctd data-start=\"3676\" data-end=\"3699\" data-col-size=\"sm\"\u003e480 x 555 x 1230 mm\u003c\/td\u003e  \u003c\/tr\u003e  \u003c\/tbody\u003e  \u003c\/table\u003e  \u003c\/div\u003e  \u003c\/div\u003e  \u003chr data-start=\"3701\" data-end=\"3704\"\u003e  \u003ch2 data-start=\"3706\" data-end=\"3723\"\u003eScope of delivery\u003c\/h2\u003e  \u003cul data-start=\"3725\" data-end=\"3995\"\u003e  \u003cli data-start=\"3725\" data-end=\"3769\"\u003e  \u003cp data-start=\"3727\" data-end=\"3769\"\u003eDefro Firewood Plus 15 kW natural draft boiler\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3770\" data-end=\"3800\"\u003e  \u003cp data-start=\"3772\" data-end=\"3800\"\u003eAnalog boiler thermometer\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3801\" data-end=\"3835\"\u003e  \u003cp data-start=\"3803\" data-end=\"3835\"\u003eElectronic fire draft regulator\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3836\" data-end=\"3869\"\u003e  \u003cp data-start=\"3838\" data-end=\"3869\"\u003eChain for the fire regulator\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3870\" data-end=\"3891\"\u003e  \u003cp data-start=\"3872\" data-end=\"3891\"\u003eShort-circuit valve\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3892\" data-end=\"3918\"\u003e  \u003cp data-start=\"3894\" data-end=\"3918\"\u003eVertical grate insert\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3919\" data-end=\"3935\"\u003e  \u003cp data-start=\"3921\" data-end=\"3935\"\u003eWirbulators\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3936\" data-end=\"3958\"\u003e  \u003cp data-start=\"3938\" data-end=\"3958\"\u003eCleaning tool\u003c\/p\u003e  \u003c\/li\u003e  \u003cli data-start=\"3959\" data-end=\"3995\"\u003e  \u003cp data-start=\"3961\" data-end=\"3995\"\u003eOperating and assembly instructions\u003c\/p\u003e  \u003c\/li\u003e  \u003c\/ul\u003e  \u003chr data-start=\"3997\" data-end=\"4000\"\u003e  \u003ch2 data-start=\"4002\" data-end=\"4037\"\u003eAssembly \u0026amp; Safety instructions\u003c\/h2\u003e  \u003cp data-start=\"4039\" data-end=\"4143\"\u003eInstallation and commissioning must only be carried out by a qualified specialist company.\u003c\/p\u003e  \u003cp data-start=\"4145\" data-end=\"4363\"\u003eTo comply with efficiency and emission requirements, a buffer storage tank with a capacity of at least 800 liters must be provided. The applicable national regulations regarding hydraulic integration and the exhaust system must be observed.\u003c\/p\u003e  \u003chr data-start=\"4365\" data-end=\"4368\"\u003e  \u003ch2 data-start=\"4370\" data-end=\"4378\"\u003eFAQ\u003c\/h2\u003e  \u003cp data-start=\"4380\" data-end=\"4518\"\u003e\u003cstrong data-start=\"4380\" data-end=\"4437\"\u003e1. For which buildings is the 15 kW version suitable?\u003c\/strong\u003e\u003cbr data-start=\"4437\" data-end=\"4440\"\u003eFor single-family homes with medium heating requirements or renovated existing buildings.\u003c\/p\u003e  \u003cp data-start=\"4520\" data-end=\"4638\"\u003e\u003cstrong data-start=\"4520\" data-end=\"4563\"\u003e2. What log length is suitable?\u003c\/strong\u003e\u003cbr data-start=\"4563\" data-end=\"4566\"\u003eFor the 15 kW version, the recommended log length is 250–290 mm.\u003c\/p\u003e  \u003cp data-start=\"4640\" data-end=\"4798\"\u003e\u003cstrong data-start=\"4640\" data-end=\"4699\"\u003e3. Is operation in a closed heating system possible?\u003c\/strong\u003e\u003cbr data-start=\"4699\" data-end=\"4702\"\u003eYes, thanks to the integrated safety heat exchanger, operation in a closed system is permitted.\u003c\/p\u003e  \u003cp data-start=\"4800\" data-end=\"4894\"\u003e\u003cstrong data-start=\"4800\" data-end=\"4840\"\u003e4. Is a buffer storage tank required?\u003c\/strong\u003e\u003cbr data-start=\"4840\" data-end=\"4843\"\u003eYes, the recommended minimum capacity is 800 liters.\u003c\/p\u003e  \u003cp data-start=\"4896\" data-end=\"5042\"\u003e\u003cstrong data-start=\"4896\" data-end=\"4948\"\u003e5. Can an induced draft fan be connected?\u003c\/strong\u003e\u003cbr data-start=\"4948\" data-end=\"4951\"\u003eYes, an optional induced draft fan can be controlled via the electronic control system.\u003c\/p\u003e  \u003cp data-start=\"5044\" data-end=\"5139\"\u003e\u003cstrong data-start=\"5044\" data-end=\"5091\"\u003e6. What type of power supply is required?\u003c\/strong\u003e\u003cbr data-start=\"5091\" data-end=\"5094\"\u003e230 V\/50 Hz for electronic control.\u003c\/p\u003e  \u003chr data-start=\"5141\" data-end=\"5144\"\u003e  \u003ch2 data-start=\"5146\" data-end=\"5156\"\u003eConclusion\u003c\/h2\u003e  \u003cp data-start=\"5158\" data-end=\"5341\"\u003eThe Defro Firewood Plus 15 kW combines classic natural draft technology with modern electronic controls. An efficient and robust solution for economical heating with firewood.\u003c\/p\u003e","brand":"Defro","offers":[{"title":"Default Title","offer_id":49417939583324,"sku":"DFW15","price":2659.98,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/defro-firewood-plus-15-kw-vergaserkessel-effiziente-holzheizung-6211298.webp?v=1770692623","url":"https:\/\/si.gemashop.de\/products\/defro-firewood-plus-15-kw-natural-draft-boiler-wood-gasifier-1","provider":"GEMA Shop","version":"1.0","type":"link"}