1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 303-4:1999 The Euro
2、pean Standard EN 303-4:1999 has the status of a British Standard ICS 91.140.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Heating boilers Part 4: Heating boilers with forced draught burners Special requirements for boilers with forced draught oil burners with outputs up t
3、o 70 kW and a maximum operating pressure of 3 bar Terminology, special requirements, testing and markingThis British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 August
4、 1999 BSI 08-1999 ISBN 0 580 30227 X BS EN 303-4:1999 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the English language version of EN 303-4:1999, Heating boilers Part 4: Heating boilers with forced draught burners Special requirements for boil
5、ers 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, published by the European Committee for Standardization (CEN). This standard partially supersedes the following British Standards: BS 779:198
6、9 and BS 855:1990. It is important to use this standard if the heating boilers under consideration fall within its scope, as BS 779:1989 and BS 855:1990 will not be valid for such heating boilers. The scope of BS 779:1989 and BS 855:1990 will be amended to state that they are no longer valid for hea
7、ting boilers falling within the scope of this standard. The UK participation in its preparation was entrusted to Technical Committee RHE/10, Heating boilers, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the inte
8、rpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards wh
9、ich implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does
10、not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside
11、 front cover, the EN title page, pages 2 to 21 and a back cover. The BSI copyright notice displayed throughout this document indicates when the document was last issued.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat
12、: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 303-4:1999 E EUROPEAN STANDARD EN 303-4 NORME EUROPE ENNE EUROPA ISCHE NORM January 1999 ICS 01.040.91; 91.140.10 Descriptors: central heati
13、ng, boilers, definitions, specifications, equipment specification, materials, steels, cast iron, copper, production control, chemical composition, mechanical properties, welded joints, welding, dimensions, performance evaluation, tests, marking, technical notices English version Heating boilers Part
14、 4: Heating boilers with forced draught burners Special requirements 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 Chaudie res de chauffage Partie 4: Chaudie res avec bru leurs a a
15、ir souffle Exigences spe cifiques pour chaudie res avec bru leurs fioul a souffle avec une puissance utile jusqua 70 kW et une pression de service maximale de 3 bar Terminologie, prescriptions spe ciales, essais et marquage Heizkessel Teil 4: Heizkessel mit Gebla sebrenner Spezielle Anforderungen an
16、 Heizkessel mit O lgebla sebrennern mit einer Leistung bis 70 kW und einem maximalen Betriebsdruck von 3 bar Begriffe, besondere Anforderungen, Pru fung und Kennzeichnung This European Standard was approved by CEN on 6 June 1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulati
17、ons 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 Secretariat or to any CEN member. This Europ
18、ean 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 versions. CEN members are the natio
19、nal standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 303-4:1999 BSI 08-1999 Foreword This European Standard has been prepared by
20、 Technical Committee CEN/TC 57, Central heating boilers, the Secretariat of which is held by DIN. 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 July 1999, and conflicting national standards shal
21、l be withdrawn at the latest by July 1999. 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 bo
22、ilers with forced 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
23、burners Special requirements 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
24、a nominal heat output 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 imple
25、ment this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 4
26、 4 Requirements 5 5 Tests 15 6 Marking 17 7 Technical documentation, scope of supply 17 Annex A (normative) Special requirements for boilers with atomizing oil burners 18 Annex B (normative) Test 18 Annex C (informative) A-deviations 21Page 3 EN 303-4:1999 BSI 08-1999 1 Scope This standard is applic
27、able to heating boilers with forced draught oil burners up to a nominal heat output of 70 kW. They are operated, either with negative pressure (natural draught boiler) or with positive pressure (pressurized boiler) in the combustion chamber, in accordance with the boiler manufacturers instructions.
28、This standard specifies the necessary terminology, the requirements on the materials and testing of them, and marking requirements for heating boilers. The boilers are suitable for open vented systems up to a maximum allowable pressure of 1 bar (class 1 pressure) and open and closed water systems up
29、 to a maximum allowable pressure of 3 bar (class 2 pressure). The boilers are capable of operating with either conventional flues or low level discharge flues as specified by the boiler manufacturer. The boilers are provided as matched units with factory fitted burners for burning kerosene or gas oi
30、l. When using a low level flue gas discharge only kerosene may be used (see annex B). The requirements of this standard apply to heating boilers which are tested on an authorized test rig in accordance with EN 304 and annex B of this standard. Boilers in accordance with this standard are designed fo
31、r the heating of central heating installations in which the heat carrier is water, and the temperature of which is restricted to 958C at normal operating conditions. For boilers with a built-in or attached water heater (storage or continuous flow heater) this standard only applies to the parts of th
32、e water heater which are necessarily subject to the operating conditions of the heating boiler (heating part). This standard does not apply to gas boilers with atmospheric burners, boilers for solid fuels, oil or gas fired condensation boilers, boilers with oil vaporization burners and low temperatu
33、re boilers. For these boilers there are further requirements. NOTE Low temperature boilers are those operating with a (water) variable temperature up to 408C or less, or those which cannot be set at a temperature higher than 558C. 2 Normative references This European Standard incorporates by dated o
34、r undated reference, provisions from other publications. These normative references 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
35、 when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 226, Atomizing oil burners Connecting dimensions between burners and heat generators. EN 287-1, Approval testing of welders Fusion welding Part 1: Steels. EN 287-2,
36、 Approval testing of welders Fusion welding Part 2: Aluminium and aluminium alloys. EN 303-2, Heating boilers Part 2: Heating boilers with forced draught burner Special requirements for boilers with atomizing oil burners. EN 304:1992, Heating boilers Test code for heating boilers for atomizing oil b
37、urners. EN 304:1992/prA1, Heating boilers Test code for heating boilers for atomizing oil burners. (Amendment 1) EN 10003-1, Metallic materials Brinell hardness test Part 1: Test method. EN 10021, General technical delivery requirements for steel and iron products. EN 10025, Hot rolled products of n
38、on-alloy structural steels Technical delivery conditions. (Includes amendment A1:1993) EN 10027-2, Designation systems for steels Part 2: Numerical system. EN 10028-2, Flat products made of steels for pressure purposes Part 2: Non-alloy and alloy steels with specified elevated temperature properties
39、. EN 10029, Hot-rolled steel plates 3 mm thick or above Tolerances on dimensions, shape and mass. EN 10088-2, Stainless steels Part 2: Technical delivery conditions for sheet/plate and strip for general purposes. EN 10120, Steel sheet and strip for welded gas cylinders. EN 24063, Welding, brazing, s
40、oldering and braze welding of metals Nomenclature of processes and reference numbers for symbolic representation on drawings. (ISO 4063:1990) EN 60335-1, Safety of household and similar electrical appliances Part 1: General requirements. (IEC 335-1:1991, modified) EN 60529, Degrees of protection pro
41、vided by enclosures (IP-Code). (IEC 529:1989) EN 60730-2-9, Automatic electrical controls for household and similar use Part 2: Particular requirements for temperature sensing controls. (IEC 730-2-9:1992, modified) ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dim
42、ensions, tolerances and designation. ISO 7-2, Pipe threads where pressure-tight joints are made on the threads Part 2: Verification by means of limit gauges. ISO 185, Grey cast iron Classification. ISO 228/1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, to
43、lerances and designation.Page 4 EN 303-4:1999 BSI 08-1999 ISO 228/2, Pipe threads where pressure-tight joints are not made on the threads Part 2: Verification by means of limit gauges. ISO 857, Welding, brazing and soldering processes Vocabulary. ISO 2553, Welded, brazed and soldered joints Symbolic
44、 representation on drawings. ISO 7005-1, Metallic flanges Part 1: Steel flanges. ISO 7005-2, Metallic flanges Part 2: Cast iron flanges. ISO 7005-3, Metallic flanges Part 3: Copper alloy and composite flanges. 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 oper
45、ating pressure the maximum allowable pressure at which the boiler is to be normally operated. The operating pressure is less than the test pressure and the type test pressure prEN 303-1 3.2 test pressure pressure to which all boilers and their parts are subjected during production in the works of th
46、e manufacturer or during setting up by the installer prEN 303-1 3.3 type test pressure pressure to which the pre-production heating boiler(s) and associated parts are subjected before start of mass production in the manufacturing works prEN 303-1 3.4 operating temperature the maximum allowable tempe
47、rature at which the boiler can be operated under normal operating conditions at the maximum setting of the boilers water temperature controller prEN 303-1 3.5 heat output Q heat output range is the amount of heat transferred to the heat carrier (water) per unit of time prEN 303-1 The heat output ran
48、ge is the span of output below the nominal heat output specified by the manufacturer over which the boiler meets the requirements of this standard and over which it can be used. prEN 303-1 3.6 nominal heat output Q N is the continuous output specified by the manufacturer in accordance with the requi
49、rements of this standard. It is the maximum useful quantity of heat transferred to the heat carrier per hour prEN 303-1 3.7 heat input Q B is the amount of heat in unit time which is supplied to the furnace of the heating boiler by the fuel based on its net calorific value H i prEN 303-1 3.8 boiler efficiency h K is the ratio of the heat output (Q) to the heat input (Q B ) supplied by the fuel prEN 303-1 h
