DIN EN 303-6:2019 pdf download.Heating boilers - Part 6: Heating boilers with forced draught burners - Specific requirements for the domestic hot water operation and energy performance of water heaters and combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kW. 4 Sicherheitstechnische Anforderungen 4.1 Konstruktion 4.1.1 Allgemeines Zugängliche Kanten und Ecken müssen gerundet oder gefast...
