HEATING BOILERS. PART 4: HEATING BOILERS WITH FORCED DRAUGHT BURNERS. SPECIAL REQUIREMENTS FOR BOILERS WITH FORCED DRAUGHT OIL BURNERS WITH OUTPUTS UP TO 70 KW AND A MAXIMUM OPERATION 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加热锅炉 带强制通风燃油燃烧器的锅炉的特殊要求 输出功率高达70 KW 最大工作压力为3 BAR 术语、特殊要求、测试和标记