EN 437:2003+A1:2009
(Main)Test gases - Test pressures - Appliance categories
Test gases - Test pressures - Appliance categories
This standard specifies the test gases, test pressures and categories of appliances relative to the use of gaseous fuels of the first, second and third families. It serves as a reference document in the specific standards for appliances that fall within the scope of the Council Directive on the approximation of the laws of Member States concerning gas appliances (90/396/EC).
The standard makes recommendations for the use of the gases and pressures to be applied for the tests. The full procedure will be given in the corresponding appliance standards.
NOTE The test gases and the test pressures specified in this standard are in principle intended to be used with all the appliances in order to establish conformity with the corresponding standards.
However, the use of some test gases and test pressures may not be appropriate in the following cases:
- appliances with nominal heat input greater than 300 kW;
- appliances constructed on site;
- appliances in which the final design is influenced by the user;
- appliances constructed for use with high supply pressures (notably direct use of the saturated vapour pressure).
In these cases, the specific appliance standards may specify other test conditions in order to establish compliance with their requirements.
Prüfgase - Prüfdrücke - Gerätekategorien
Diese Norm legt die Prüfgase, Prüfdrücke und Gerätekategorien für die Verwendung von !Brenngasen"
der ersten, zweiten und dritten Familie fest. Sie gilt als übergeordnetes Dokument für die speziellen
Gerätenormen, die unter den Geltungsbereich der Richtlinie des Rates (90/396/EWG) zur Angleichung der
Rechtsvorschriften der Mitgliedstaaten für Gasverbrauchseinrichtungen fallen.
Die Norm enthält Empfehlungen zur Verwendung von Gasen und Drücken bei der Durchführung der
Prüfungen. Das vollständige Verfahren wird in den entsprechenden Gerätenormen angegeben werden.
ANMERKUNG Die Prüfgase und Prüfdrücke, die in dieser Norm festgelegt werden, sind im Prinzip für sämtliche Geräte
bestimmt, um die Konformität mit den Anforderungen der entsprechenden Normen sicherzustellen.
Die Verwendung der Prüfgase und Prüfdrücke kann jedoch in folgenden Fällen nicht geeignet sein:
Geräte mit einer Nennwärmebelastung über 300 kW;
Geräte, die vor Ort erstellt werden;
Geräte, deren Endausführung durch den Benutzer beeinflusst wird;
Geräte, die für einen Betrieb bei hohen Versorgungsdrücken ausgelegt sind (insbesondere die direkte Verwendung
des gesättigten Dampfdruckes).
In diesen Fällen können die einzelnen Gerätenormen weitere Prüfbedingungen festlegen, um die Konformität mit den
Anforderungen der entsprechenden Normen sicherzustellen.
Gaz d'essais - Pressions d'essais - Catégories d'appareils
Cette norme définit les gaz d'essais, pressions d'essais et catégories d'appareils relatifs à l'utilisation de combustibles
gazeux des première, deuxième et troisième familles. Elle sert de document de référence dans les normes
particulières aux appareils qui entrent dans le champ d'application de la directive du Conseil relative au
rapprochement des législations des États membres concernant les appareils à gaz (90/396/CE).
La norme donne des recommandations pour l'utilisation des gaz et pressions à appliquer pour les essais.
La procédure complète sera indiquée dans les normes particulières d'appareils correspondantes.
NOTE Les gaz d'essais et les pressions d'essais spécifiés dans cette norme sont en principe destinés à être utilisés avec
tous les appareils afin d'établir la conformité aux exigences des normes correspondantes.
Néanmoins l'utilisation des gaz d'essais et des pressions d'essais peut ne pas être appropriée dans les cas suivants :
- appareils de débit calorifique nominal supérieur à 300 kW ;
- appareils construits sur site ;
- appareils dont la conception finale est déterminée par l'utilisateur ;
- appareils construits pour l'utilisation avec de hautes pressions d'alimentation (notamment utilisation directe de
la pression de vapeur saturante).
Dans ces cas, les normes particulières d'appareils peuvent spécifier d'autres conditions d'essais afin d'établir
la conformité avec leurs exigences.
Preskusni plini - Preskusni tlaki - Kategorije naprav (vključno z dopolnilom A1)
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prüfgase - Prüfdrücke - GerätekategorienGaz d'essais - Pressions d'essais - Catégories d'appareilsTest gases - Test pressures - Appliance categories91.140.40Sistemi za oskrbo s plinomGas supply systems27.060.20Plinski gorilnikiGas fuel burnersICS:Ta slovenski standard je istoveten z:EN 437:2003+A1:2009SIST EN 437:2005+A1:2009en,fr,de01-september-2009SIST EN 437:2005+A1:2009SLOVENSKI
STANDARDSIST EN 437:20051DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 437:2003+A1
March 2009 ICS 27.060.20; 91.140.40 Supersedes EN 437:2003English Version
Test gases - Test pressures - Appliance categories
Gaz d'essais - Pressions d'essais - Catégories d'appareils Prüfgase - Prüfdrücke - Gerätekategorien This European Standard was approved by CEN on 6 December 2002 and includes Amendment 1 approved by CEN on 10 January 2009.
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 may be obtained on application to the CEN 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 437:2003+A1:2009: ESIST EN 437:2005+A1:2009
2 Contents
Page Foreword .31Scope .42Normative references .43Terms and definitions .44Gases .74.1Classification .74.2Test gases .75Test pressures .96Classification of appliances . 126.1Appliance categories . 126.1.1General . 126.1.2Category I . 126.1.3Category II . 136.1.4Category III . 146.2Operations permitted for a change of gas or pressure, adjustment and regulating devices . 157Choice of test gases and test pressures . 158Marking . 16Annex A (normative)
Conditions for preparation of the test gases . 17Annex B (informative)
National situations . 18B.1General . 18B.2Categories listed in the body of the standard marketed in the different countries . 18B.3Appliance supply pressures corresponding to the categories given !!!!in B.1 and B.2"""" . 21B.4Special categories marketed nationally or locally . 22B.5Test gases and test pressures corresponding to the special categories given in B.4 . 30B.6Special conditions . 34Annex C (informative)
Guidelines for extension to other categories . 39Annex D (informative)
National situation of countries whose national bodies are CEN affiliate members . 40D.1!!!!General . 40D.2Categories listed in the body of the standard and marketed in the different countries"""" . 40!!!!Bibliography"""" . 42 SIST EN 437:2005+A1:2009
3 Foreword This document (EN 437:2003+A1:2009) has been prepared by Technical Committee CEN/TC 238 “Test gases, test pressures and categories of appliances”, the secretariat of which is held by AFNOR. 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 September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. This document replaces !EN 437:2003". This document includes Amendment 1, approved by CEN on 2009-01-10. The start and finish of text introduced or altered by amendment is indicated in the text by tags !". This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports the requirements of 2.2 of the "Gas Appliances" Directive (90/396/EEC). Annex A is normative. Annexes B, C and D are informative. EN 437 is intended to provide all the CEN Technical Committees preparing standards on gas appliances with definitions for test gases, test pressures and categories of appliances for use by these committees within the limits of the scope defined in clause 1. Similarly, it is emphasized that distributors of 2nd family gases using pressure couples should restrict themselves to their use in the normal manner but may, in exceptional circumstances and for short periods, use gases of the lowest Wobbe index at the lowest pressure, under conditions in which the safety of the appliance has to be ensured. The standard seeks to clarify the present situation with respect to test gases, test pressures and appliance categories. The concern for clarity has led to the elucidation of numerous categories and national situations or conditions. The complexity of the standard is likely to increase as new members join the Union. This revised standard incorporates the two previously published amendments and includes new appliance categories, the reason for which does not lie essentially with new gas resources but with new technical developments for appliances. !This standard can be considered as an important stage in the harmonization of test gases, test pressures and appliance categories and the quality of information on gas usage in Europe. The standard also applies to Albania, Croatia, Republic of Macedonia and Turkey, countries whose national standardisation body is affiliate member of CEN (see Annex D). Annex B gives national situations relating to gases, gas pressures and appliance categories that apply nationally or locally. The information provided is included under the responsibility of the national standardisation bodies. The tables give the available information." 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, 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, Switzerland and the United Kingdom.
1 Scope This standard specifies the test gases, test pressures and categories of appliances relative to the use of !gaseous fuels" of the first, second and third families. It serves as a reference document in the specific standards for appliances that fall within the scope of the Council Directive on the approximation of the laws of Member States concerning gas appliances (90/396/EC). The standard makes recommendations for the use of the gases and pressures to be applied for the tests. The full procedure will be given in the corresponding appliance standards. NOTE The test gases and the test pressures specified in this standard are in principle intended to be used with all the appliances in order to establish conformity with the corresponding standards. However, the use of some test gases and test pressures may not be appropriate in the following cases: appliances with nominal heat input greater than 300 kW; appliances constructed on site; appliances in which the final design is influenced by the user; appliances constructed for use with high supply pressures (notably direct use of the saturated vapour pressure). In these cases, the specific appliance standards may specify other test conditions in order to establish compliance with their requirements. 2 Normative references !The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies." !EN ISO 3166-1:2006, Codes for the representation of names of countries and their subdivisions – Part 1: Country codes (ISO 3166-1:2006)" !EN ISO 6976:2005, Natural gas – Calculation of calorific values, density, relative density and Wobbe index from composition (ISO 6976:1995 including Corrigendum 1:1997, Corrigendum 2:1997 and Corrigendum 3:1999)" 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply: 3.1 gas appliance appliance burning !gaseous fuels" !NOTE For the purposes of this standard the term "gaseous fuels" means any fuel that is in the gaseous state at a temperature of 15 °C, and under a pressure of 1 bar." 3.2 test gases gases intended for the verification of the operational characteristics of !gas appliances". They consist of reference gases and limit gases 3.3 reference gases test gases with which appliances operate under nominal conditions when they are supplied at the corresponding normal pressure SIST EN 437:2005+A1:2009
5 3.4 limit gases test gases representative of the extreme variations in the characteristics of the gases for which appliances have been designed 3.5 test pressures gas pressures used to verify the operational characteristics of !gas appliances". They consist of normal and limit pressures NOTE The gas pressures used are expressed in millibars (mbar) 1 mbar = 102 Pa 3.6 normal pressure pn pressure under which the appliances operate in nominal conditions when they are supplied with the corresponding reference gas
3.7 limit pressures maximum pressure: pmax; minimum pressure: pmin pressures representative of the extreme variations in the appliance supply conditions
3.8 pressure couple combination of two distinct gas distribution pressures applied by reason of the significant difference existing between the Wobbe indices within a single family or group in which the higher pressure corresponds only to gases of low Wobbe index ; the lower pressure corresponds to gases of high Wobbe index. 3.9 reference conditions these correspond to 15 °C, 1 013, 25 mbar, unless otherwise specified 3.10 relative density d ratio of the masses of equal volumes of dry gas and dry air under the same conditions of temperature and pressure: 15 °C or 0 °C and 1 013, 25 mbar
3.11 calorific value quantity of heat produced by the complete combustion, at a constant pressure equal to 1 013,25 mbar, of a unit volume or mass of gas, the constituents of the combustible mixture being taken at reference conditions and the products of combustion being brought back to the same conditions A distinction is made between: the gross calorific value Hs: the water produced by combustion is assumed to be condensed; the net calorific value Hi: the water produced by combustion is assumed to be in the vapour state NOTE The calorific value is expressed: either in megajoules
per cubic metre (MJ/m3) of dry gas under the reference conditions; or in megajoules per kilogram (MJ/kg) of dry gas. 3.12 Wobbe index gross Wobbe index Ws; net Wobbe index Wi
ratio of the calorific value of a gas per unit volume and the square root of its relative density under the same reference conditions. The Wobbe index is said to be gross or net according to whether the calorific value used is the gross or net calorific value
NOTE The Wobbe indices are expressed - either in megajoules p
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