SIST EN 1266:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Independent gas-fired convection heaters incorporating a fan to assist transportation of combustion air and/or flue gasesAppareils de chauffage indépendants a convection utilisant les combustibles gazeux et intégrant un ventilateur pour faciliter l'alimentation en air comburant et/ou l'évacuation des produits de combustionKonvektions-Raumheizer für gasförmige Brennstoffe mit gebläseunterstützter Verbrennungsluftzu- und/oder AbgasabführungTa slovenski standard je istoveten z:EN 1266:2002SIST EN 1266:2004en,fr,de97.100.20ICS:SLOVENSKI
STANDARDSIST EN 1266:200401-januar-2004

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1266October 2002ICS 97.100.20English versionIndependent gas-fired convection heaters incorporating a fan toassist transportation of combustion air and/or flue gasesAppareils de chauffage indépendants à convection utilisantles combustibles gazeux et intégrant un ventilateur pourfaciliter l'alimentation en air comburant et/ou l'évacuationdes produits de combustionKonvektions-Raumheizer für gasförmige Brennstoffe mitgebläseunterstützter Verbrennungsluftzu- und/oderAbgasabführungThis European Standard was approved by CEN on 11 January 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1266:2002 E

National situations.98Annex B (normative)
Classification of appliances.110Annex C (normative)
Requirements and test methods for separate air supply andcombustion products evacuation ducts.115Annex D (normative)
High voltage ignition circuits.120Annex E (informative)
Gas valve arrangements.122Annex F (informative)
Spillage test methods.123Annex G (normative)
Calculation of conversions of NOx.129Annex H (normative)
Apparatus for the determination of the smoke number.130Annex I (informative)
Means of identification of the types of gas in force in the variouscountries.131Annex J (normative)
Special national conditions.132Annex K (informative)
A-deviations.133Annex ZA (informative)
Clauses of this European Standard addressing essentialrequirements or other provisions of EU Directives.134

to create a pressure drop and thusreduce the gas pressure at the burner to a predetermined value for a given supply pressure and rate3.3.1.5gas rate adjustercomponent intended for the manufacturer or installer to set the gas rate to each burner at apredetermined value according to the supply conditionsThe adjustment may be progressive (screw adjuster) or discontinuous (changing restrictors).The adjuster of an adjustable governor is regarded as a gas rate adjuster.The action of setting this device is called 'setting the gas rate'.3.3.1.6gas rate controlcomponent allowing the user to open or close the gas supply to one or more burners. It may also beused to adjust the gas rate of certain burners to a predetermined value, called the 'reduced rate'. Thisdevice may be a 'tap'3.3.1.7injectorcomponent that admits the gas into a burner3.3.1.8start gasinitial quantity of gas ignited to give a flame which is used to ignite the main burner. It may bedischarged through a separate ignition burner or part of the main burner3.3.2 Burner3.3.2.1main burnerburner that assures the thermal function of an appliance. It is usually called simply 'burner'3.3.2.2fully premixed burnerburner in which the gas and a quantity of air at least equal to that theoretically necessary for completecombustion are mixed before the combustion head

according to the value of theWobbe index. Table 1 specifies the families and groups of gas used in this standard.

- Group A22,424,8Second family39,154,7
- Group H45,754,7
- Group L39,144,8
- Group E40,954,7Third family72,987,3
- Group B/P72,987,3
- Group P72,976,8
- Group B81,887,34.1.2 Appliance categories4.1.2.1 GeneralAppliances are classified into categories defined according to the gases and the pressures for whichthey are designed.The definition of categories follows from 4.1.2.2, 4.1.2.3 and 4.1.2.4.In each country, taking account of the local gas distribution conditions (gas composition and supplypressures), only some of the categories defined in 4.1.2.2, 4.1.2.3 and 4.1.2.4 are marketed.The national situations concerning the marketing of these appliance categories in each country, andthe corresponding supply pressures, are given in Tables A.1 and A.2 (see also in Table A.3 thespecial categories marketed locally and nationally or corresponding to special gases and supplypressures indicated in Table A.4; conditions which are particular to a country are given in annex K).4.1.2.2 Category IAppliances of category I are designed exclusively for the use of gases of a single family or of a singlegroup.4.1.2.2.1 Appliances designed for use on first family gases onlyCategory I1a: appliances using only gases of group a of the first family at the prescribed supplypressure. (This category is not used).

1)Annex B gives examples of the various types.
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