BS 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
         5.2.1 General
         5.2.2 Shape
         5.2.3 Thermal conductivity of insulation
         5.2.4 Resistance to heat
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
         8.1.1 General
         8.1.2 Initial gas tightness
         8.1.3 Thermal shock resistance
         8.1.4 Final gas tightness after thermal
                shock testing
   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
         15.1.1 Testing at normal operating conditions
         15.1.2 Soot fire test
   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
         18.5.1 Gauge test
         18.5.2 Direct measurement test
   18.6 Squareness of angles and flatness of walls
   18.7 Proof load
         18.7.1 Test sample
         18.7.2 Testing equipment
         18.7.3 Procedure
   18.8 Thermal performance tests
         18.8.1 Test equipment
         18.8.2 Test flue
         18.8.3 Procedure
         18.8.4 Measurement of permeability rate
   18.9 Corrosion resistance test
         18.9.1 Test specimens
         18.9.2 Test equipment
         18.9.3 Procedure
         18.9.4 Expression of results
   18.10 Water absorption
         18.10.1 Test specimen
         18.10.2 Test equipment
         18.10.3 Procedure
         18.10.4 Expression of results
   18.11 Bulk density
         18.11.1 Test specimen
         18.11.2 Test equipment
         18.11.3 Procedure
         18.11.4 Expression of results
   18.12 Abrasion resistance
         18.12.1 Test flue
         18.12.2 Test equipment
         18.12.3 Procedure
   18.13 Condensate resistance test
         18.13.1 Test section
         18.13.2 Test apparatus
         18.13.3 Procedure
         18.13.4 Expression of results
   18.14 Adhesion test for insulation attached to
         outer wall of flue blocks
         18.14.1 Test specimen
         18.14.2 Testing procedure
         18.14.3 Loading
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.2.1 General
                            B.2.2 Data
                            B.2.3 Specific conditions for the
                                  cavities
                            B.2.4 Calculations
                       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.1.1 General
                            C.1.2 Single sampling
                            C.1.3 Double sampling
                       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.2.1 System of attestation of
                                   conformity
                            ZA.2.2 EC certificate and declaration
                                   of conformity
                       ZA.3 CE Marking and labelling
Bibliography

Defines requirements for clay/ceramic flue blocks with solid walls or walls with vertical perforations including bonding and non-bonding blocks and their fittings.

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 1 Flue blocks covered by this standard are manufactured in three forms : a) single flue ; b) multi-flue ; c) flue/ventilation combination. NOTE 2 Flue blocks may have flues which are either circular, square or rectangular. The joints may have a locating feature such as a rebate.