BS EN 1457-1 is the first part of the multiple series that is a product standard for clay/ceramic flue liners operating under dry conditions with solid walls or walls with vertical perforations for use in the construction of multiwall chimneys and flue pipes which serve to convey products of combustion from fireplaces or heating appliances to the outside atmosphere by negative or positive pressure. It includes the flue liners used for domestic and industrial chimneys which are not structurally independent (free-standing).
Note: BS EN 1457-1 does not cover flue liners operating under wet conditions.
BS EN 1457-1 on clay/ceramic flue liners operating under dry conditions is useful for:
A dry operating condition is a condition when the chimney is designed to operate normally with the temperature of the inner surface of the flue liner at and below the water dew point
BS EN 1457-1 specifies the performance requirements for factory-made flue liners and chimney fittings. This will help you with the testing including thermal testing with or without insulation, marking, and inspection.
Overall, BS EN 1457-1 helps you to enhance the quality and durability of clay/ceramic flue liners under dry conditions.
EN 1457-1:2012