SIST EN 1279-2:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Glas im Bauwesen - Mehrscheiben-Isolierglas - Teil 2: Langzeitprüfverfahren und Anforderungen bezüglich FeuchtigkeitsaufnahmeVerre dans la construction - Vitrage isolant - Partie 2: Méthode d'essai de longue durée et exigences en matière de pénétration d'humiditéGlass in building - Insulating glass units - Part 2: Long term test method and requirements for moisture penetration81.040.20Steklo v gradbeništvuGlass in buildingICS:Ta slovenski standard je istoveten z:EN 1279-2:2018SIST EN 1279-2:2018en,fr,de01-oktober-2018SIST EN 1279-2:2018SLOVENSKI
STANDARD



SIST EN 1279-2:2018



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1279-2
July
t r s z ICS
z sä r v rä t r Supersedes EN
s t y {æ tã t r r tEnglish Version
Glass in building æ Insulating glass units æ Part
tã Long term test method and requirements for moisture penetration Verre dans la construction æ Vitrage isolant æ Partie
t ã Méthode d 5essai de longue durée et exigences en matière de pénétration d 5humidité
Glas im Bauwesen æ MehrscheibenæIsolierglas æ Teil
tã Langzeitprüfverfahren und Anforderungen bezüglich Feuchtigkeitsaufnahme This European Standard was approved by CEN on
s x March
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
9
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s t y {æ tã t r s z ESIST EN 1279-2:2018



EN 1279-2:2018 (E) 2 Contents Page European foreword . 3 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 5 4 Symbols and abbreviations . 5 5 Requirements . 6 6 Method of long-term test . 6 6.1 Principle . 6 6.2 Number, description and selection of test specimens . 6 6.3 Climate conditions in cabinet . 7 6.4 Procedure. 9 6.5 Calculation of moisture penetration index I . 9 6.6 Precision of test method . 10 7 Determination of moisture content . 10 7.1 Methods available . 10 7.2 Sampling method . 11 7.2.1 Sampling of desiccant in bulk . 11 7.2.2 Sampling of preformed flexible spacer incorporating desiccant . 11 8 Test report . 14 Annex A (normative)
Moisture content in insulating glass units without desiccant . 16
SIST EN 1279-2:2018



EN 1279-2:2018 (E) 3 European foreword This document (EN 1279-2:2018) has been prepared by Technical Committee CEN/TC 129 “Glass in building”, the secretariat of which is held by NBN. 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 January 2019 and conflicting national standards shall be withdrawn at the latest by January 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1279-2:2002. The main changes compared to the previous edition EN 1279-2:2002 are: a) Measurement of the dew point of the 15 specimens was removed, the specimens are randomly selected; b) The tolerance of some temperature was increased: — During cycling, l =
± 2,0) °C; — During the slopes:
= (s ± 4,0) °C/h (for other specimens than the centred one); — During constant temperature: c = (58 ± 1) °C; c) The time to move the specimens from one cabinet to another was increased; d) The minimum storage duration before testing was reduced to 3 days; e) Test report was revised adding a full description of the test specimens; f) Annex A: Dew point was moved to part 6; g) Annex B: Measurement of the moisture content was moved to main part (sampling) and part 4 Annex E (measuring with change of temperature from 950 °C to 540 °C); h) Annex C: Karl Fisher was moved to main part (sampling) and part 4 Annex F (measuring); i) Annex D: Measurement of Tc was moved to part 4 Annex E (desiccant in bulk) or F (Karl Fisher); j) Moisture content in insulating glass units without desiccant was moved to Annex A. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This European Standard “Glass in Building - Insulating glass units” consists of the following Parts: — Part 1: Generalities, system description, rules for substitution, tolerances and visual quality; — Part 2: Long term test method and requirements for moisture penetration; SIST EN 1279-2:2018



EN 1279-2:2018 (E) 4 — Part 3: Long term test method and requirements for gas leakage rate and for gas concentration tolerances; — Part 4: Methods of test for the physical attributes of edge seal components and inserts; — Part 5: Product standard; — Part 6: Factory production control and periodic tests. These parts are inextricably bound up with each other. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 1279-2:2018



EN 1279-2:2018 (E) 5 1 Scope This document describes the test method for the determination of moisture penetration index and specifies the requirements for limit values for insulating glass units made a) in accordance with EN 1279-1:2018 and manufactured to EN 1279-6:2018; or b) for the purpose to demonstrate that components (e.g. edge seals or spacers) will allow the insulating glass unit to conform to the requirements given in EN 1279-1:2018, Clause 6. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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 1279-1:2018, Glass in Building — Insulating glass units — Part 1: Generalities, system description, rules for substitution, tolerances and visual quality EN 1279-4:2018, Glass in Building — Insulating glass units — Part 4: Methods of test for the physical attributes of edge seal components and inserts EN 1279-6:2018, Glass in Building — Insulating glass units — Part 6: Factory production control and periodic tests 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1279-1:2018 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:
IEC Electropedia: available at http://www.electropedia.org/
ISO Online browsing platform: available at http://www.iso.org/obp 4 Symbols and abbreviations Symbol Characteristic Unit AWAC Available water adsorption capacity % by weight I Moisture penetration index of the IGU fraction or percentage Iav Average value of the moisture penetration indices I within tested set of IGUs fraction or percentage Tc Standard moisture adsorption capacity of desiccant % by weight Tc,av Average standard moisture adsorption capacity of desiccant Tc % by weight Tf Final moisture content of desiccant after ageing according to standardized ageing conditions % by weight Ti Initial moisture content of desiccant before ageing % by weight Ti,av Average initial moisture content of desiccant Ti obtained over four measurements % by weight SIST EN 1279-2:2018



EN 1279-2:2018 (E) 6 Symbol Characteristic Unit
Temperature of the external face of test specimens in test cabinet °C c Temperature of the external face of the central test specimen in test cabinet during constant temperature phase °C h High temperature of the external face of the central test specimen in the test cabinet during the high humidity/temperature cycling phase °C l Low temperature of the external face of the central test specimen in the test cabinet during the low humidity/temperature cycling phase °C s Temperature of the external face of the central test specimen in the test cabinet as the cycle moves between high temperature and low temperature and vice versa °C 5 Requirements Average moisture penetration index (Iav) and moisture penetration index (I) shall be determined in accordance with Clause 6. The average moisture penetration index (Iav) of five test specimens shall not exceed 0,20 (or 20 %). The moisture penetration index of any test specimen shall not exceed 0,25 (or 25 %). 6 Method of long-term test 6.1 Principle Insulating glass unit (IGU) specimens are exposed to a climate test. The initial and final moisture content of the desiccant are determined. I values for each unit tested and Iav value are calculated for each unit tested. 6.2 Number, description and selection of test specimens 15 test specimens which shall be representative of the system description (see EN 1279-1:2018, Annex A), and shall consist of two panes of 4 mm glass in accordance with EN 1279-1:2018, 5.2. If 4 mm glass is not available, the thickness as near as possible to 4 mm shall be used. The length shall be (502 ± 2) mm and the width shall be (352 ± 2) mm. The cavity width shall be 12 mm, or if not manufactured, the cavity width shall be as near as possible to 12 mm. Specimens of triple glazed units may also be tested. Length, width and cavity width should fulfil the above mentioned requirements. The I-value of the individual cavities may be different. The requirement given in Clause 5 applies to both individual cavities. After production, the test specimens shall be stored for fourteen days and additionally conditioned for a minimum of three days at standard laboratory conditions. Number the specimens by random selection. Select the specimens as indicated in Table 1. SIST EN 1279-2:2018



EN 1279-2:2018 (E) 7 Table 1 — Designation of specimens
Specimen number Designate specimens for: 1, 2, 3 and 4 Measurement of initial moisture content of desiccant (Ti) 5, 6, 7, 8 and 9 Climate testing and measurement of final moisture content of desiccant (Tf) 10, 11, 12 and 13 If used in case of breakage, spare specimens shall be aged in accordance with the full climate test for measurement of final moisture content of desiccant (Tf) 14 and 15 Disregarded or measurement of standard moisture adsorption capacity of desiccant (Tc) as required The average moisture penetration index Iav shall be the average of five specimens . 6.3 Climate conditions in cabinet The climate test procedure consists of two subsequent steps.
Key 1 cycling 2 moving specimen
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