本标准现在仅限于制造金属烟道盒。它对金属烟道盒的尺寸、材料和性能提出了要求，这些金属烟道盒可使燃气烟道安装在没有壁炉或烟道的住宅内或墙壁内。烟道箱的性能通过强度试验和温度试验进行测试。规定的烟道盒拟与符合BS EN 1856-1和BS EN 1856-2的金属烟道管一起使用。交叉引用:BS 1251:1987BS 1449-1BS 7977-1:2002BS EN 509:2000BS EN 1559-1BS EN 1559-2BS EN 1856-1BS EN 1856-2BS EN 10088-1BS EN 10327BS 6332-4:1983BS EN 573-3

This standard is now limited to the manufacture of metal flue boxes. It gives requirements for the dimensions, material and performance of metal flue boxes that enable gas fire flues to be installed within a dwelling against or within a wall, which does not have a fireplace or flue. The performance of the flue boxes are tested through a strength test and a temperature test. The flue boxes specified are intended to be used with metal flue pipes conforming BS EN 1856-1 and BS EN 1856-2.Cross References:BS 1251:1987BS 1449-1BS 7977-1:2002BS EN 509:2000BS EN 1559-1BS EN 1559-2BS EN 1856-1BS EN 1856-2BS EN 10088-1BS EN 10327BS 6332-4:1983BS EN 573-3