This European Standard describes the method of specifying the design, installation criteria for system chimneys, construction of custom built chimneys, and the relining of existing chimneys. It also gives information on commissioning of chimneys. This European Standard also deals with connecting flue pipes. This European Standard does not apply to freestanding chimneys covered by EN 13084-1. This European Standard excludes chimneys designated H (high positive pressure chimneys) and chimneys for room-sealed heating appliances. For the purpose of this European Standard the term "installation" includes construction.