Regulation L3 Prevention of smoke emission
Northern Ireland Not yet in force
A heat-producing appliance installed in a building for the purpose of heating or cooking, and which discharges its combustion products to the external air shall be capable of, or readily adaptable to, the burning of fuel smokelessly, unless it is—
(a)
a furnace which complies with Article 5 of the Clean Air (Northern Ireland) Order 1981f1 (which requires that new furnaces shall so far as practicable be smokeless); or
(b)
an appliance of a class exempted conditionally or unconditionally from the provisions of Article 17 of that Order (which relates to smoke control areas) by any order for the time being in force under paragraph (7) of that Article.