scope:

This standard is a product standard for clay/ceramic flue liners with solid walls or walls with vertical perforations for use in the construction of multi-walled chimneys which serve to convey products of combustion from fireplaces or heating appliances to the atmosphere by negative or positive pressure . It includes the flue liners used for domestic and industrial chimneys which are not structurally independent (freestanding). This standard specifies the performance requirements for factory made flue liners. Testing, marking and inspection are covered by this standard.