1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 1457-2:2012Chimneys Clay/ceramic fluelinersPart 2: Flue liners operating under wetconditions Requirements and testmethodsBS EN 1457-2:2012 BRITISH STANDARDNational foreword
2、This British Standard is the UK implementation of EN 1457-2:2012. Together with BS EN 1457-1:2012, it supersedes BS EN 1457:1999 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/506/3, Chimneys and their components having innerlinings of clay or cerami
3、c.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI Standa
4、rdsLimited 2012ISBN 978 0 580 64234 0ICS 91.060.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 29 February 2012.Amendments issued since publicationDate T e x t
5、a f f e c t e dBS EN 1457-2:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1457-2 January 2012 ICS 91.060.40 Supersedes EN 1457:1999English Version Chimneys - Clay/ceramic flue liners - Part 2: Flue liners operating under wet conditions - Requirements and test methods Conduits de fume - Co
6、nduits intrieurs en terre cuite/cramique - Partie 2: Exigences et mthodes dessai pour utilisation en conditions humides Abgasanlagen - Keramik-Innenrohre - Teil 2: Innenrohre fr den Nassbetrieb - Anforderungen und Prfungen This European Standard was approved by CEN on 16 December 2011. CEN members a
7、re bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to
8、 the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management C
9、entre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, N
10、orway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation i
11、n any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1457-2:2012: EBS EN 1457-2:2012EN 1457-2:2012 (E) 2 Contents Page Foreword 51 Scope 62 Normative references 63 Terms and definitions .64 Flue liners and openings 84.1 Flue liner cross-sections 84.2 Inspection openin
12、gs and chimney junctions 95 Types of flue liner . 106 Materials 107 Tolerances on dimensions 117.1 Transverse dimension 117.2 Height . 117.3 Angle of curvature 117.4 Straightness 117.5 Squareness of ends 117.6 Deviation from shape of cross section 117.7 Geometry of joints 118 Proof load 118.1 Straig
13、ht flue liners 118.2 Curved flue liners 118.3 Minimum load for inspection opening sections 129 Gas tightness/leakage, thermal shock resistance and soot fire resistance for straight flue liners 129.1 Initial test . 129.2 Final gas tightness after testing 139.2.1 General . 139.2.2 Final gas tightness
14、after sootfire testing . 139.2.3 Final gas tightness after thermal shock testing 1310 Durability . 1410.1 Corrosion resistance 1410.2 Freeze/Thaw resistance . 1411 Water absorption and bulk density . 1411.1 General . 1411.2 Water absorption 1411.3 Bulk density . 1412 Abrasion resistance . 1413 Conde
15、nsate resistance and flow resistance 1413.1 Condensate resistance 1413.2 Flow resistance . 1514 Thermal resistance . 1515 Evaluation of conformity 1515.1 General . 1515.2 Initial type testing . 1515.3 Further type tests 15BS EN 1457-2:2012EN 1457-2:2012 (E) 3 15.4 Factory production control 1616 Tes
16、t methods . 1616.1 Size 1616.2 Height 1616.3 Angle of curvature . 1716.4 Straightness . 1716.5 Squareness of ends 1716.6 Deviation from shape of cross-section . 1816.7 Proof load . 2016.7.1 Test specimen 2016.7.2 Testing equipment . 2016.7.3 Test procedure . 2016.8 Thermal testing 2116.8.1 Test flue
17、 2116.8.2 Test equipment 2116.8.3 Assembly of test flue 2316.8.4 Thermal conditioning 2316.8.5 Measurement of leakage rate . 2416.8.6 Expression of results 2416.9 Corrosion resistance. 2416.9.1 Test specimens 2416.9.2 Test equipment 2516.9.3 Test procedure . 2516.9.4 Expression of results 2616.10 Wa
18、ter absorption . 2616.10.1Test specimen 2616.10.2Test equipment 2616.10.3Test procedure . 2616.10.4Expression of results 2616.11 Bulk density . 2616.11.1Test specimen 2616.11.2Test equipment 2716.11.3Test procedure . 2716.11.4Expression of results 2716.12 Abrasion resistance 2716.12.1Test flue 2716.
19、12.2Test equipment 2716.12.3Test procedure . 2816.12.4Expression of results 2816.13 Test method for the determination of water and vapour flow (indirect method) 2916.13.1Test installation . 2916.13.2Test sample 3016.13.3Position of measuring points and records . 3016.13.4Test procedure . 3116.13.5Re
20、sults 3216.13.6Measuring equipment Composition, measuring range, uncertainty . 3216.13.7Test rig 3317 Designation 3418 Marking . 35Annex A (normative) Sampling procedures for an AQL of 10 % and inspection level S2 36A.1 Acceptability determination . 36A.2 Normal inspection . 36A.3 Normal to reduced
21、inspection 37A.4 Reduced to normal inspection . 38A.5 Tightened inspection 38A.6 Tightened to normal inspection . 38A.7 Discontinuation of inspection 39BS EN 1457-2:2012EN 1457-2:2012 (E) 4 Annex B (normative) Thermal resistance 40B.1 Method 1: simplified calculation for flue liners without cavities
22、 . 40B.2 Method 2: thermal resistance of flue liners with or without cavities 40B.3 Method Approximate thermal resistance values . 45Annex C (normative) Measurement of the coefficient of friction of chimneys 47Annex ZA (informative) Clauses of this European Standard addressing the provisions of the
23、EU Construction Products Directive . 49ZA.1 Scope and relevant characteristics 49ZA.2 Procedure of attestation of conformity of clay/ceramic flue liners and fittings 50ZA.3 CE Marking and labelling . 52Bibliography . 55BS EN 1457-2:2012EN 1457-2:2012 (E) 5 Foreword This document (EN 1457-2:2012) has
24、 been prepared by Technical Committee CEN/TC 166 “Chimneys”, the secretariat of which is held by ASI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2012, and conflicting national standards
25、shall be withdrawn at the latest by July 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1457:1999.
26、This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. EN 145
27、7 is made of two parts: EN 1457-1, Chimney Clay/ceramic flue liners Part 1: Flue liners operating under dry conditions Requirements and test methods; EN 1457-2, Chimney Clay/ceramic flue liners Part 2: Flue liners operating under wet conditions Requirements and test methods. The main changes with re
28、spect to the previous edition are: EN 1457 has been split in 2 parts: EN 1457-2 is a product standard for clay/ceramic flue liners operating under wet conditions. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
29、 this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer
30、land Turkey and the United Kingdom. BS EN 1457-2:2012EN 1457-2:2012 (E) 6 1 Scope This European Standard is a product standard for clay/ceramic flue liners operating under wet conditions with solid walls or walls with vertical perforations for use in the construction of multiwall chimneys and flue p
31、ipes 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). This European Standard spe
32、cifies the performance requirements for factory made flue liners and chimney fittings. Testing including thermal testing with or without insulation, marking and inspection are covered by this standard. Flue liners that are specified to this standard will meet the requirements of EN 1457-1 with the s
33、ame working temperature, pressure, designation and soot fire resistance. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the reference
34、d document (including any amendments) applies. EN 312, Particleboards Specifications EN 1443:2003, Chimneys General requirements EN 10088-1, Stainless steels Part 1: List of stainless steels EN 13384-1:2002+A2:2008, Chimneys Thermal and fluid dynamic calculation methods Part 1: Chimneys serving one
35、appliance EN 14297:2004, Chimneys Freeze-thaw resistance test method for chimney products EN ISO 6946, Building components and building elements Thermal resistance and thermal transmittance Calculation method (ISO 6946) EN ISO 7500-1, Metallic materials Verification of static uniaxial testing machin
36、es Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system (ISO 7500-1) ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection 3 Terms and definitions Fo
37、r the purposes of this document, the terms and definitions given in EN 1443:2003 and the following apply. 3.1 nominal size numerical designation of size which is a convenient round number equal to or approximately equal to either: a) the internal diameter of circular flue liners; b) the internal wid
38、th of square flue liners; c) the internal width and breadth of the cross section of rectangular flue liners NOTE The nominal length is expressed in millimetres. BS EN 1457-2:2012EN 1457-2:2012 (E) 7 3.2 nominal height numerical designation of the internal height in millimetres of a straight flue lin
39、er which is a convenient round number approximately equal to the internal height of the flue liner NOTE See Figure 1. Key 1 internal height Figure 1 Internal height 3.3 nominal angle of curvature angle subtended by a curved flue liner at the centre of the curve NOTE 1 The nominal angle is expressed
40、in degrees. NOTE 2 See Figure 2. Key 1 angle of curvature 2 curved flue liner Figure 2 Angle of curvature 3.4 wet operating condition 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 1457-2:2
41、012EN 1457-2:2012 (E) 8 3.5 dry operating condition condition when the chimney is designed to operate normally with the temperature of the inner surface of the flue liner above the water dew point 4 Flue liners and openings 4.1 Flue liner cross-sections Flue liners shall be either: a) circular or sq
42、uare in cross-section with rebated or spigot and socket ends; b) square or rectangular in cross-section with rebated ends and rounded internal corners; c) circular, square or rectangular in cross-section with butt joints and jointed with a sleeve; d) circular or square in cross-section with taper jo
43、ints. a) Square b) Rectangular c) Circular d) Wall with vertical perforations Figure 3 Examples of cross-section configuration BS EN 1457-2:2012EN 1457-2:2012 (E) 9 a) Rebated b) Spigot is the safety factor = 5; H is the height of chimney in metres; G is the weight per metre in kilograms per metre.
44、9 Gas tightness/leakage, thermal shock resistance and soot fire resistance for straight flue liners 9.1 Initial test Prior to thermal testing a test flue constructed in accordance with 16.8.3 with N1 and N2 liners shall have a leakage rate not greater than 2 m3s-1m-2 10-3of internal surface area tes
45、ted at a differential pressure of (40 2) Pa when tested as described in 16.8.5. Prior to thermal testing a test flue constructed in accordance with 16.8.3 with P1 liners shall have a leakage rate not greater than 0,006 m3.s-1 m-2. 10-3of internal surface area tested at a differential pressure of (20
46、0 10) Pa when tested as described in 16.8.5. Where chimney fittings are fired in a plant alongside straight flue liners using the same material and firing process, the gas tightness/leakage, thermal shock resistance and soot fire resistance shall be deemed to be that of straight flue liners when tes
47、ted in accordance with 16.8.3. If the chimney fittings are not normally fired alongside straight flue liners, straight flue liners or short lengths of straight flue liner shall be made for test purposes using the same material and firing process as for chimney fittings shall be tested for complying
48、with 9.2.1. BS EN 1457-2:2012EN 1457-2:2012 (E) 13 9.2 Final gas tightness after testing 9.2.1 General When flue liners are tested for sootfire resistance, thermal shock testing need not be carried out. 9.2.2 Final gas tightness after sootfire testing When tested in accordance with 16.8, flue liners A3, B3 shall have a leakage rate after sootfire testing not greater than the values given in
