1、BRITISH STANDARDBS EN 304:1992Incorporating Amendments Nos. 1 and 2Heating boilers Test code for heating boilers for atomizing oil burnersThe European Standard EN 304:1992, with the incorporation of amendments A1:1998 and A2:2003, has the status of a British StandardICS 91.140.10g49g50g3g38g50g51g60
2、g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 304:1992This British Standard, having been prepared under the direction of the Refrigeration, Heating and Air Cond
3、itioning Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 December 1992 BSI 2006The following BSI references relate to the work on this British Standard:Committee reference RHE/10Draft for comment 90/73172 DCISBN 0 580 21370 6Cooperatin
4、g organizationsThe European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries:Austria Oesterreichisches NormungsinstitutBelgium Institut belge de normalisationDenmark Dansk Stand
5、ardiseringsraadFinland Suomen Standardisoimisliito, r.y.France Association franaise de normalisationGermany Deutsches Institut fr Normung e.V.Greece Hellenic Organization for StandardizationIceland Technological Institute of IcelandIreland National Standards Authority of IrelandItaly Ente Nazionale
6、Italiano di UnificazioneLuxembourg Inspection du Travail et des MinesNetherlands Nederlands Normalisatie-instituutNorway Norges StandardiseringsforbundPortugal Instituto Portugus da QualidadeSpain Asociacin Espaola de Normalizacin y CertificacinSweden Standardiseringskommissionen i SverigeSwitzerlan
7、d Association suisse de normalisationUnited Kingdom British Standards InstitutionAmendments issued since publicationAmd. No. Date Comments10183 February 1999 See national foreword16418 30 June 2006 See national forewordBS EN 304:1992iContentsPageCooperating organizations Inside front coverNational f
8、oreword iiForeword 2Foreword to amendment A1 2Text of EN 304 5National annex NA (informative) Committees responsible Inside back coverNational annex NB (informative) Cross-references Inside back cover BSI 2006BS EN 304:1992iiNational forewordThis British Standard has been prepared under the directio
9、n of the Refrigeration, heating and air conditioning Standards Policy Committee and is the English language version of EN 304:1992, Heating boilers Test code for heating boilers for atomizing oil burners, including amendments A1:1998 and A2:2003, published by the European Committee for Standardizati
10、on (CEN).The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“.EN 304 was produced as a result of international d
11、iscussion in which the United Kingdom took an active part.Please note that the United Kingdom voted against amendment A1 on the grounds that in 5.8.1.1 the indirect method states a mean temperature of (50 1) C. This does not legally conform to the Boiler Efficiency Directive, which specifies a mean
12、temperature of not less than 50 C. Therefore boilers tested to this standard may not necessarily conform to the Boiler Equipment Directive.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a Brit
13、ish Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 37 and a back cover.The BSI copyright notice displayed in this document indicates when the document was l
14、ast issued. BSI 2006EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 304September 1992+A1June 1998+A2September 2003UDC 697.326:620.1Descriptors: Central heating, boilers, liquid fuel appliances, tests, thermal tests, measurementEnglish versionHeating boilers Test code for heating boilers for atomiz
15、ing oil burnersChaudires de chauffage Rgles dessai pour les chaudires avec brleurs fioul pulvrisationHeizkessel Prfregeln fr Heizkessel mit lzerstubungsbrennernThis European Standard was approved by CEN on 1992-09-18; amendment A1 was approved by CEN on 1998-06-06. CEN members are bound to comply wi
16、th 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 Central Secretari
17、at 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 Central Secretariat has the same status as the official v
18、ersions.CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.CENEuropean Committee for StandardizationComit Europen de Normalisat
19、ionEuropisches Komitee fr NormungCentral Secretariat: rue de Stassart 36, B-1050 Brussels 1992 Copyright reserved to CEN membersRef. No. EN 304:1992EN 304:19922ForewordThis European Standard was drawn up by the Technical Committee CEN/TC 57, Central heating boilers, of which the Secretariat is held
20、by DIN.The following structure is intended for the standards for heating boilers prepared by CEN/TC 57:EN 303-1, Heating boilers Heating boilers with forced draught burners Part 1: Terminology, general requirements, testing and marking.EN 303-2, Heating boilers Heating boilers with forced draught bu
21、rners Part 2: Special requirements for boilers with atomizing oil burners.EN 303-2, Heating boilers Heating boilers with forced draught burners up to a heat output of 70 kW and an operating pressure of max. 3 bar Terminology, special requirements, testing and marking (standard in preparation).EN 304
22、, Heating boilers Test code for heating boilers for atomizing oil burners.This European Standard shall be given the status of national standard, either by publication of an identical text or by endorsement, at the latest by March 1993, and conflicting national standards shall be withdrawn at the lat
23、est by March 1993.The standard was approved and in accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portu
24、gal, Spain, Sweden, Switzerland, United Kingdom.Foreword to amendment A1This amendment EN 304:1992/A1:1998 to EN 304:1992 has been prepared by Technical Committee CEN/TC 57, Central heating boilers, the Secretariat of which is held by DIN.This amendment to the European Standard EN 304:1992 shall be
25、given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 1998, and conflicting national standards shall be withdrawn at the latest by December 1998.For relationship with EU Directive(s), see informative Annex ZA, which is an int
26、egral part of this standard.The following structure is intended for the standards for heating boilers:prEN 303-1, Heating boilers Part 1: Heating boilers with forced draught burners Terminology, general requirements, testing and marking.prEN 303-2, Heating boilers Part 2: Heating boilers with forced
27、 draught burners Special requirements for boilers with atomizing oil burners.prEN 303-3, Heating boilers Part 3: Gas-fired central heating boilers Assembly comprising a boiler body and a forced draught burner.prEN 303-4, Heating boilers Part 4: Heating boilers with forced draught burners Special req
28、uirements for boilers with forced draught oil burners with outputs up to 70 kW and a maximum operating pressure of 3 bar Terminology, special requirements, testing and marking.prEN 303-5, Heating boilers Part 5: Heating boilers for solid fuels, hand and automatically fired, with a nominal heat outpu
29、t of up to 300 kW Terminology, requirements, testing and marking.EN 304, Heating boilers Test code for heating boilers for atomizing oil burners.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Sta
30、ndard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Foreword to amendment A2This document (EN 304:1992/A2:2003) has been prepared by Technical Committ
31、ee CEN/TC 57 “Central heatingboilers”, the secretariat of which is held by DIN.This Amendment to the European Standard EN 304:1992 shall be given the status of a national standard, either bypublication of an identical text or by endorsement, at the latest by March 2004, and conflicting national stan
32、dardsshall be withdrawn at the latest by March 2004.This Amendment to the European Standard EN 304:1992 specifies the additionally required heating-related testsand the deviating boundary conditions for low-temperature central-heating boilers. Its purpose is to complete,amend or shorten EN 304:1992.
33、 This does not affect the main standard.WARNING : other requirements and other EU Directives may be applicable to the products falling within the scopeof this European Standard.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound
34、 to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom. BSI 2006EN 304:19923ContentsPageForeword 2
35、1Scope 52 Normative references 53Principles of test 54 Measuring instruments and methods 55Test 75.1 Determination of the heat output and the efficiency of the boiler 75.2 Determination of the rated heat output 75.3 Determination of the boiler efficiency (direct method) 75.4 Test operation 85.5 Calc
36、ulation 85.6 Determination of the waterside resistance 95.7 Determination of the standby loss 95.8 Useful efficiency at part load 105.9 Surface temperature 135.10 Floor temperatures 135.11 Emission values of NOxand CO 166 Test report and other documents 16Annex A (normative) Measurements 20Annex B (
37、informative) Applicable symbols and units 31Annex C (informative) Performance tests 32Annex D (informative) Criteria for the adaption of atomizing oil burners to heating boilers for liquid fuels 33Annex E (informative) Hints for setting up and evaluation of the test rig 35Annex F (informative) Deter
38、mination of the heat losses from the test rig and the heat contributions of the circulating pump of the test rig 35Annex G (informative) Determination of the time t135Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives 36Fig
39、ure 1 Measuring installation to determine the amount of fuel 6Figure 2 Flue gas section 14Figure 3 Test configuration for the determination of base temperatures 15PageFigure 4 Configuration of a thermocouple for measuring the surface temperatures of the test base 15Figure 5 Relation of temperature t
40、o time for a boiler equipped with a pumped hot water cylinder 16Figure 6 Test rig with short-circuit section and three possible arrangements for cold water supply 17Figure 7 Test rig with heat exchanger 18Figure 8 Test installation to determine the heat emissions of the boiler when the burner is off
41、 and the thermal capacity of the boiler 19Figure A.1 Test rig with heat exchanger 22Figure A.2 Test rig with short-circuit section and three possible arrangements for cold water supply 23Figure A.3 Mean specific heat capacities for dry combustion products and water vapour at flue gas temperatures up
42、 to and including 500 C26Figure A.4 Total heat transmission figure ! by radiation and free convection to the horizontal and vertical surfaces at an ambient temperature tL= 20 C as a function of the mean surface temperature tm28Figure A.5 Test rig for determination of the waterside resistance (transp
43、arent flexible tubes for connections to differential pressure gauge) 28Figure D.1 Minimum dimensions of the combustion chamber 34Figure D.2 34Table 1 Symbols and quantities needed to calculate the efficiency at part loadTable 2 Calculation of part-load efficiency 13Table A.1 2113 BSI 20064blankEN 30
44、4:199251 ScopeThe test code applies to the tests of the thermal performance of oil-fired heating boilers (hereafter called “boilers”) and combined boilers and water heaters. The requirements are laid down in EN 303-1 and EN 303-2.This standard includes the requirements and recommendations for carryi
45、ng out and evaluating the procedure for testing boilers and also the details of the technical conditions under which the tests shall be carried out.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. These normative references
46、are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest
47、 edition of the publication referred to applies.EN 267:1991, Atomizing oil burners of monobloc type; testing.EN 303-1:1992, Heating boilers; Heating boilers with forced draught burners Part 1: Terminology, general requirements, testing and marking.EN 303-2:1992, Heating boilers; Heating boilers with
48、 forced draught burners Part 2: Special requirements for boilers with atomizing oil burners.3 Principles of tests3.1 Choice of boiler to be tested and its accessoriesThe parts and accessories used should be those supplied as standard by the manufacturer or those recommended by him.For the rest an at
49、omizing oil burner shall be used which complies with EN 267 and which is suitable for the boiler (dimensions of the combustion chamber, pressure conditions, etc.).3.2 Condition of the boilerThe condition and the equipment of the boiler to be tested shall conform to the normal supply specification. The use of additional thermal insulation to parts in contact with water, products of combustion and fire is not permitted.When determining the thermal output of a boiler fitted with
