CEN/TC 166/SC 1 - Chimneys and their components with inner linings of concrete

This European Standard specifies the materials, dimensional and performance requirements for concrete flue blocks as defined in clause 3 for use in system chimneys.  The flue blocks may be of single wall or multi wall construction.   The standard does not apply to blocks with back ventilation.
The standard specifies a type of block to dimensionally co-ordinate with masonry unit coursing height, referred to as a type B (Bonding block).
The standard also relates to storey-height and reinforced flue blocks.
NOTE 1   Classes in this standard are not derived from conditions referred to in article 3.2 of Directive 89/106/EC, and should only be considered as technical classes in the sense of Commission Guidance Paper E 'Levels and classes in the Construction Products Directive'.
NOTE 2   Any reference to the term flue liners implies both flue liners and their fittings, except where otherwise indicated.

EC - Annex ZA modification
DIN - Modification to 4.2.1, Figure A.3 and Annex ZA, Note 3

This European Standard specifies the material, dimensional and performance requirements, including methods of test, for factory-made concrete flue liners and fittings for the construction of multi-wall chimneys.
This standard also relates to storey-height and reinforced flue liners.
NOTE 1   Classes in this standard, unless otherwise specified, e.g. resistance to fire, are not derived from conditions referred to in article 3.2 of Directive 89/106/EC, and should only be considered as technical classes in the sense of Commission Guidance Paper E 'Levels and classes in the Construction Products Directive'.
NOTE 2   Any reference to the term flue liners implies both flue liners and their fittings, except  where otherwise indicated.

TC - Modification to cross references in 4.2.1, replacing Figure A.3