1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13420:2011Windows Behaviour between different climates Test methodIncorporating corrigendum December 2011 BS EN 13420:2011 BRITISH STANDARDNational forewordThis British Sta
2、ndard is the UK implementation of EN 13420:2011. It supersedes DD ENV 13420:2000 which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e B / 5 3 8 / 1 , W i n d o w s .A list of organizations represented on this committee can be obtained on req
3、uest to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 75751 8ICS 91.060.50 Compliance with a British Standard cannot confer immunity from legal obligations.This British
4、 Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2011.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e d31 December 2011 Implementation of CEN Correction Notice18 May 2011: Correction to Figure 1EUROPEAN STANDARD NORME EUROP
5、ENNE EUROPISCHE NORM EN 13420 April 2011 ICS 91.060.50 Supersedes ENV 13420:2000English Version Windows - Behaviour between different climates - Test method Fentres - Comportement entre climats diffrents - Mthode dessai Fenster - Differenzklima - Prfverfahren This European Standard was approved by C
6、EN on 10 March 2011. CEN members are 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
7、 may be obtained on application to 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 notifi
8、ed to the CEN-CENELEC Management Centre 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,
9、 Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN Al
10、l rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13420:2011: EEN 13420:2011 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions .64 Principle of tests 64.1 Vapour diffusion 64.2 Stability
11、.75 Test facility .76 Dimensions of the test specimens.77 Preparation for test 78 Test conditions 79 Test methods 810 Test sequence . 1011 Test report . 10Annex A (informative) Design principles . 12Annex B (normative) Survey of general design criteria where tests are not necessary 13BS EN 13420:201
12、1EN 13420:2011 (E) 3 Foreword This document (EN 13420:2011) has been prepared by Technical Committee CEN/TC 33 “Doors, windows, shutters, building hardware and curtain walling”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either
13、 by publication of an identical text or by endorsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the latest by October 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or
14、 CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes ENV 13420:2000. The main modifications to ENV 13420:2000 are: a) Status of document changed from ENV to EN; b) The German title has been added among the titles of the standard; c) The Conte
15、nts have been updated respectively revised; d) The description of test method 2 in Clause 1 has been rephrased; e) The description of the annexes has been rephrased; f) In 3.1 a reference to Annexes A and B has been integrated at the end; g) In Clause 4 the description of the principle tests has bee
16、n split into the test procedure vapour diffusion and stability; h) In Clause 8 the reference to the values of EN 1121 has been deleted because the values given in Table 1 are completely different to those in EN 1121; i) Tolerances have been integrated in Table 1; j) The status of Annex B has been ch
17、anged into a normative annex. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Gre
18、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 13420:2011EN 13420:2011 (E) 4 Introduction Through climatic loading of the windows it is possible
19、in the case of unfavourable designs that the frames of windows manufactured of different materials may: decay through accumulation of moisture and may thus be damaged; this moisture may come from water vapour diffusion and condensation; be unable to fulfil their basic functions (serviceability, air
20、permeability) because of unacceptable deformations. BS EN 13420:2011EN 13420:2011 (E) 5 1 Scope This European Standard specifies the test methods for evaluating: the risks of decay of openable and fixed windows manufactured of different materials through increased moisture accumulation as a result o
21、f condensation or water vapour diffusion; the influence of deformation on basic performances of openable and fixed windows manufactured of different materials exposed to different climates between their external and internal faces. Three test methods are to be differentiated. They take into account
22、different cases of loadings. Test method 1: For designs with low resistance to water vapour diffusion (normally designs with water vapour equalization holes); the test procedure is to be used for cross-sections where the danger is given by the moisture accumulation as a result of the condensation of
23、 moisture between the planking and the timber (see Annex A (informative), Figure A.1). Test method 2.1 and 2.2: For designs with high resistance to water vapour diffusion (normally designs without water vapour equalization holes); the test procedure is to be used for cross-sections where the danger
24、is given by the condensation of the moisture between the surface of the inner profile and the inner surface of the outer profile by having a different water vapour diffusion (see Annex A (informative), Figures A.2 and A.3). Test method 3: For designs being sensitive to deformation; the test procedur
25、e is to be used for cross-sections where they are sensitive to the function through deformation as a result of climatic loading. This European Standard defines the test procedures which are to be used in dependence of the potential risk of the design. This European Standard is relevant to initial ty
26、pe testing, i. e. to developments or changes in designs. It is not relevant to routine quality control or to proven designs. NOTE Designs are included in Annex A (informative). Annex B (normative) is the survey of general design criteria where tests are not necessary. 2 Normative references The foll
27、owing 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 referenced document (including any amendments) applies. EN 1026, Windows and doors Air permeability Test method E
28、N 1121:2000, Doors Behaviour between two different climates Test method EN 12046-1, Operating forces Test method Part 1: Windows EN 12207, Windows and doors Air permeability Classification EN 12519:2004, Windows and pedestrian doors Terminology EN 13115, Windows Classification of mechanical properti
29、es Racking, torsion and operating forces BS EN 13420:2011EN 13420:2011 (E) 6 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12519:2004 and the following apply. 3.1 design with low resistance to water vapour diffusion design which is regarded as being
30、 a design with low water vapour diffusion when moisture conditioned by water vapour diffusion can be drained in the cross-section in a controlled way under specified service conditions, e.g. through sufficient ventilation NOTE See Annex A (informative) and B (normative). 3.2 design with high resista
31、nce to water vapour diffusion design which is regarded as being a design with high resistance to water vapour diffusion when as a result of profile coverings a sufficient draining of the moisture conditioned by water vapour diffusion is impaired in the combined profile 3.3 design being sensitive to
32、deformation design which is regarded as being sensitive to deformation when under specified service conditions the relative expansion (thermal or hygrometrical) of the profile may impair the basic functions of the window (e.g. operating forces, air permeability) 3.4 window manufactured of different
33、materials window whose frame (or sash or both) members are manufactured of non-identical materials, operating hardware being excluded EXAMPLES Typical examples: basic timber windows clad with aluminium or PVC profiles; basic aluminium windows clad with timber (solid profiles or veneers); basic plast
34、ic windows clad with aluminium profiles. 3.5 orientation side 1 orientation with an inward looking face 3.6 orientation side 2 orientation with an outward looking face 3.7 wet spot visible moisture accumulation, after climatic exposure, at the interface between timber (or any other hygroscopic mater
35、ials) and another material 4 Principle of tests 4.1 Vapour diffusion In order to have a temperature below dew point in composite profiles, a gradient of water vapour diffusion and a gradient of temperature are created; the window is exposed to this double gradient for a specified time during which t
36、he water content of hygroscopic elements is checked. BS EN 13420:2011EN 13420:2011 (E) 7 4.2 Stability A gradient of temperature between the 2 sides of window is created and the window is exposed to this gradient for a specified time and measurement of deformations and functional deformations are ca
37、rried out. 5 Test facility The test facility is defined in EN 1121. In addition the following test facilities are required: a measuring device for determining the moisture content; an electric hygrometer which is properly calibrated for determining the moisture content of the timber and which has to
38、 have an accuracy of 1 %; and a measuring device for determining the deformation with an accuracy of 0,1 mm. 6 Dimensions of the test specimens For the test methods 1 and 2 the test results are independent of the dimensions. For that reason, the dimension can be agreed upon between the test laborato
39、ry and the applicant. In the case of designs sensitive to deformation (test method 3) the largest overall dimension foreseen by the manufacturer is to be tested to ensure the validity of the test. The test results obtained at the foreseen maximum dimensions of the tested profile system can be extrap
40、olated to smaller width and height without additional testing. 7 Preparation for test The test specimen shall be mounted taking into account the installation instructions as defined and published by the manufacturer. The test specimen shall be fixed in the test rig plumb without any twists or bends,
41、 which may influence the test results. The specimen shall be fully operable and shall be opened and closed five times before the test. During the test the windows shall be secured in a closed and locked position. 8 Test conditions The test conditions subsequently listed shall be used in connection w
42、ith the test methods in Clause 9. BS EN 13420:2011EN 13420:2011 (E) 8 Table 1 Test methods for designs with low and high resistance to water vapour diffusion Test method Test climate Side 1 Side 2 Cycle/ durability Air temperature1C Relative humidity (U) % Air temperature2 C Relative humidity (U) %
43、1 A 23 2 50 5 -10 2 See Figure 1 B 23 2 50 5 60 2 - (12 h) 2.1 C 23 2 70 5 3 2 80 5 30 days 60 daysa 2.2 A 23 2 50 5 -10 2 - 30 days 60 daysaaUntil the constant moisture content of the hygroscopic materials or visible condensation is reached in the profile.Table 2 Test methods for designs sensitive
44、to deformation Test method Test climate Side 1 Side 2 Cycle/durability Air temperature1C Relative humidity (U) % Air temperature 2C Relative humidity (U) % 3 A 23 3 50c 5 -10 3 - 24 h D 23 3 50c 5 70a, b ,d, e 3 - 24 haThe reference temperature (according to EN 1121:2000, 5.2) for heating up the sur
45、face by radiation. b All test results obtained at 75C (worst case) can be extrapolated to 70 C without additional testing. cFor non hygroscopic materials the relative humidity need not be regulated. dFor nonhygroscopic materials also a temperature difference ( ) of 47 C may be used, if the upper tem
46、perature remains below the softening point of the material. eAlternatively to the method given in EN 1121 (radiation), the temperature may be produced by hot air. The surface temperature of the specimen shall not rise above the surface temperature resulting from radiation when measured at 70C (BST),
47、 which shall be determined first.9 Test methods Test method 1 For the test the specimen shall be exposed within a changing test climate A and B (see Table 1) according to Figure 1 with 100 cycles or until a constant weight or moisture of the hygroscopic materials of a climatic exposure has been reac
48、hed. The moisture of the wood shall be continuously examined and recorded. BS EN 13420:2011EN 13420:2011 (E) 9 Key air temperature t h cycle time a test climate B + 60C b test climate A -10C c 100 cycles NOTE The moisture content shall be gauged before and after the test methods 1, 2.1 and 2.2. Figu
49、re 1 Loading by changing temperatures (“side 2“ in accordance with the definition in 3.6) Test methods 2.1 and 2.2 For the test the specimen shall be exposed to a constant climatic loading according to the test climate C or A (Table 1) for a period of 30 days (min.) and 60 days (max.)1). The moisture of the wood shall be examined and recorded continually or at least once a week. Test method 3 For the test
