Heating boilers - Part 4: Special requirements for boilers with forced draught oil burners with outputs up to 70 kW and a maximum operating pressure of 3 bar - Terminology, special requirements, testing and marking
供暖锅炉.第4部分:带强制通风燃烧器的供暖锅炉;对输出功率高达70千瓦、最大工作压力为3巴的带强制通风燃油燃烧器的锅炉的特殊要求;术语、特殊要求、测试和标记;德文版EN 303-4:1999