This document specifies the characteristics of performance for single and multi-wall system chimneys with rigid metal liners composed of chimney sections, chimney fittings, terminals and supports with nominal diameter up to and including 1 200 mm, used to convey the products of combustion from appliances to the outside atmosphere.
This document also specifies characteristics for the air supply ducts of concentric chimneys for room-sealed application, made out of metal or plastic (without fibre stabilization).
Additionally, it specifies assessment and verification of constancy of performance (AVCP).
NOTE 1 Metal liners and metal connecting flue pipes, not covered, are included in prEN 1856-2:2021.
NOTE 2 This document does not apply to structurally independent chimneys.
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