EN 1806:2006

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Types of flue blocks
5 Materials
   5.1 Flue blocks
   5.2 Insulation
6 Tolerances on dimensions
   6.1 Internal transverse dimensions
   6.2 Height
   6.3 Angles
   6.4 Straightness
   6.5 Squareness of ends
   6.6 Squareness of angles and flatness of walls
   6.7 Joints
   6.8 Bonding extension
   6.9 Tolerance on insulation thickness
7 Proof load
   7.1 Straight flue blocks
   7.2 Angle flue blocks
   7.3 Minimum load for inspection opening sections
   7.4 Adhesion between outer wall and insulation
8 Gas tightness and thermal shock resistance
   8.1 Straight flues blocks
   8.2 Angle flue blocks
9 Condensate resistance
10 Corrosion resistance
11 Water absorption and bulk density
   11.1 General
   11.2 Water absorption
   11.3 Bulk density
12 Abrasion resistance
13 Flow resistance
14 Thermal resistance
15 Resistance to fire
   15.1 Internal to external
   15.2 External to external
16 Resistance to freeze/thaw
17 Evaluation of conformity
   17.1 General
   17.2 Initial type testing
   17.3 Further tests
   17.4 Factory production control
18 Test methods
   18.1 Internal transverse dimensions
   18.2 Height
   18.3 Angles
   18.4 Straightness
   18.5 Squareness of ends
   18.6 Squareness of angles and flatness of walls
   18.7 Proof load
   18.8 Thermal performance tests
   18.9 Corrosion resistance test
   18.10 Water absorption
   18.11 Bulk density
   18.12 Abrasion resistance
   18.13 Condensate resistance test
   18.14 Adhesion test for insulation attached to
         outer wall of flue blocks
19 Designation
20 Marking, labelling and packaging
Annex A (normative) Measurement of the coefficient of
        friction of chimneys
Annex B (normative) Thermal resistance
      B.1 Method 1: simplified calculation for
                     flue blocks without cavities
      B.2 Method 2: thermal resistance of flue
                     blocks with or without cavities
      B.3 Method Approximate thermal resistance
           values
Annex C (normative) Sampling procedures for an AQL
        of 10 % and Inspection Level S2
      C.1 Acceptability determination
      C.2 Normal inspection
      C.3 Normal to reduced inspection
      C.4 Reduced to normal inspection
      C.5 Tightened inspection
      C.6 Tightened to normal inspection
      C.7 Discontinuation of inspection
Annex ZA (informative) Clauses of this European Standard
           addressing the provisions of EU
           Construction Products Directives
      ZA.1 Scope and relevant characteristics
      ZA.2 Procedure of attestation of
           conformity of clay/ceramic flue blocks
      ZA.3 CE Marking and labelling
Bibliography

This European Standard specifies the requirements for clay/ceramic flue blocks with solid walls or walls with vertical perforations including bonding and non-bonding blocks and their fittings. Non-bonding flue blocks which have insulation in the vertical perforations or attached to the outer walls are also covered by this standard. This standard specifies the performance requirements for factory-made flue blocks.When they are installed, they will form a part of a multi-wall chimney or a complete chimney which will serve to convey products of combustion from fireplaces or heating appliances to the atmosphere.This standard includes components used for domestic and industrial chimneys which are not structurally independent (free-standing). Testing, marking and inspection requirements are covered by this standard.NOTE 1Flue blocks covered by this standard are manufactured in three forms :a)single flue ;b)multi-flue ;c)flue/ventilation combination.NOTE 2Flue blocks may have flues which are either circular, square or rectangular. The joints may have a locating feature such as a rebate.