Chimneys - Requirements and test methods for metal chimneys and material independent air supply ducts for roomsealed heating applications - Part 1: Vertical air/flue terminals for C6-type appliances
烟囱.房间密封供暖用金属烟囱和独立于材料的供气管道的要求和试验方法.第1部分:C6型设备的垂直空气/烟道终端