Chimneys - Requirements and test methods for metal chimneys and material independent air supply ducts for roomsealed heating applications - Part 2: Flue and air supply ducts for room sealed appliances
烟囱.房间密封供暖用金属烟囱和材料独立供气管道的要求和试验方法.第2部分:房间密封设备用烟道和供气管道;德文版EN 14989-2:2007