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1、BS EN 777-3:2009 ICS 91.140.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Multi-burner gas-fired overhead radiant tube heater systems for non domestic use Part 3: System F Safety Licensed CopyChinese University of Hong Kong, 13/06/2009 07:48, Uncontrolled
2、 Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2009 BSI 2009 ISBN 978 0 580 55847 4 Amendments/corrigenda issued since publication DateComments BS EN 777-3:2009 National foreword This British Standard is the UK implem
3、entation of EN 777-3:2009. It supersedes BS EN 777-3:2000 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee GSE/20, Non-domestic space heaters (gas). A list of organizations represented on this committee can be obtained on request to its secretary. This
4、 publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed CopyChinese University of Hong Kong, 13/06/2009 07:48, Uncontrolled Copy,
5、 (c) BSI BS EN 777-3:2009 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 777-3 March 2009 ICS 91.140.40Supersedes EN 777-3:1999 English Version Multi-burner gas-fired overhead radiant tube heater systems for non domestic use - Part 3: System F - Safety Tubes radiants suspendus multi-brleurs ut
6、ilisant les combustibles gazeux usage non-domestique - Partie 3 : Systme F - Scurit Dunkelstrahlersysteme mit mehreren Brennern mit Geblse fr gewerbliche und industrielle Anwendung - Teil 3: System F - Sicherheit This European Standard was approved by CEN on 24 January 2009. CEN members are bound to
7、 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 Ma
8、nagement 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 a
9、s 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, Sl
10、ovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CENAll rights of exploitation in any form and by any means reserved worldwid
11、e for CEN national Members. Ref. No. EN 777-3:2009: E Licensed CopyChinese University of Hong Kong, 13/06/2009 07:48, Uncontrolled Copy, (c) BSI BS EN 777-3:2009 EN 777-3:2009 (E) 2 Contents Page Foreword . 4? 1?Scope 5? 2?Normative references . 5? 3?Terms and definitions . 6? 3.1?System and its con
12、stituent parts 6? 3.2?Adjusting, control and safety devices 9? 3.3?System operation 10? 3.4?Gases 13? 3.5?Conditions of operation and measurement 14? 3.6?Country of destination 14? 4?System classification 15? 4.1?Classification according to the nature of the gases used (categories) 15? 4.2?Classific
13、ation according to the gases capable of being used . 15? 4.3?Classification according to the mode of evacuation of the combustion products 17? 5?Constructional requirements . 17? 5.1?General . 17? 5.2?Requirements for adjusting, control and safety devices 22? 5.3?Ignition devices . 27? 5.4?Main burn
14、ers 28? 5.5?Pressure test points 28? 5.6?Injectors . 28? 6?Operational requirements 29? 6.1?Soundness . 29? 6.2?Heat inputs . 29? 6.3?Limiting temperatures 29? 6.4?Ignition, cross-lighting and flame stability . 30? 6.5?Pressure regulator 30? 6.6?Combustion . 30? 6.7?Air-proving device in the common
15、duct . 31? 6.8?Prolonged performance 31? 6.9?Measurements of oxides of Nitrogen, NOx . 32? 7?Test methods . 32? 7.1?General . 32? 7.2?Construction and design 39? 7.3?Safety of operation 39? 7.4?Other pollutants 52? 8?Marking and instructions . 55? 8.1?Marking of the system and the packaging . 55? 8.
16、2?Instructions 59? 8.3?Presentation 63? 9?Evaluation of conformity of POCEDs and their associated terminals 63? 9.1?General . 63? 9.2?Type testing . 63? 9.3?Factory production control (FPC) . 64? Annex A (informative) National situations . 66? A.1?General . 66? A.2?Categories listed in the body of t
17、he standard and marketed in different countries 66? Licensed CopyChinese University of Hong Kong, 13/06/2009 07:48, Uncontrolled Copy, (c) BSI BS EN 777-3:2009 EN 777-3:2009 (E) 3 A.3?Appliance supply pressures corresponding to the categories given in A.2 68? A.4?Special categories marketed national
18、ly or locally . 70? A.5?Test gases corresponding to the special categories given in A.4 . 74? A.6?Gas connections in the various countries . 75? A.7?Flue connections in the various countries . 77? Annex B (informative) System F . 78? Annex C (informative) Equivalence rules . 79? C.1?Conversion to ca
19、tegories within a restricted Wobbe Index range 79? C.2?Conversion to categories within an identical Wobbe Index range 79? C.3?Conversion to categories within a wider Wobbe Index range 80? Annex D (informative) Calculation of the mass flow rate of flue gases 81? D.1?Flue gas mass flow rate 81? D.2?Qu
20、antity of air in the flue gas 81? D.3?Flue gas excess air ratio () . 82? D.4?Quantity of water vapour in the flue gas 82? D.5?Quantity of Nitrogen in the flue gas 82? D.6?Quantity of Oxygen in the flue gas 82? D.7?Dry quantity of flue gas 83? D.8?Quantity of carbon dioxide in the flue gas . 83? Anne
21、x E (informative) Identification of gas types in use in various countries 85? Annex F (normative) Special national conditions . 86? F.1?General . 86? Annex G (informative) Calculation example of the weighting factors for a system with several rates 87? G.1?Appliance rates . 87? G.2?Weighting of Qpi,
22、% = 20 87? G.3?Weighting of Qpi,% = 40 87? G.4?Weighting of Qpi,% = 60 87? G.5?Weighting of Qpi,% = 70 88? G.6?Total weighting 88? Annex H (informative) NOx conversion calculation . 89? H.1?NOx emission conversion factors 89? H.2?NOx Conversion Calculation 90? Annex I (informative) National situatio
23、ns of countries whose national bodies are CEN associate members . 92? Annex J (informative) An example of sampling plans 93? J.1?Sampling plans 93? J.2?Inspection levels and procedures . 94? Annex K . 95? K.1?General conditions of test 95? K.2?Test conditions 95? K.3?Test procedure 95? K.4?Accuracy
24、of measurement . 97? K.5?Calculation of Flue Loss. 97? Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives . 100? Annex ZB (informative) Clauses of this European Standard addressing the provisions of the EU Construction Prod
25、ucts Directive 103? ZB.1?Scope and relevant characteristics . 103? ZB.2?Procedure(s) for attestation of conformity of construction products 105? ZB.3 CE marking and labelling . 108? Bibliography . 110? Licensed CopyChinese University of Hong Kong, 13/06/2009 07:48, Uncontrolled Copy, (c) BSI BS EN 7
26、77-3:2009 EN 777-3:2009 (E) 4 Foreword This document (EN 777-3:2009) has been prepared by Technical Committee CEN/TC 180 “Domestic and non-domestic gas fired air heaters and non-domestic gas fired overhead radiant heaters”, the secretariat of which is held by AFNOR. This European Standard shall be g
27、iven 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. Attention is drawn to the possibility that some of the elements of this docume
28、nt may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 777-3:1999. This revision modifies EN 777-3:1999. It has been prepared to incorporate requirements for combustion products evacuation du
29、cts, POCEDs, supplied as an integral part of the system to support the EU Directive 89/106/EEC on construction products under mandate M/105. To this end the systems within the scope of this standard are now defined as Type B52x and Type B53x rather than Type B22x and Type B23x. Furthermore, the oppo
30、rtunity presented by this revision has been taken to update the standard in respect to EN 437:2003. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). For relationshi
31、p with EC Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document. 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,
32、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. Licensed CopyChinese University of Hong K
33、ong, 13/06/2009 07:48, Uncontrolled Copy, (c) BSI BS EN 777-3:2009 EN 777-3:2009 (E) 5 1 Scope This European Standard specifies the requirements and test methods for the construction, safety, classification and marking of non-domestic gas-fired overhead radiant tube heaters incorporated into a multi
34、-burner system (called system F and referred to in the body of the text as the “system”) with each burner unit under the control of an automatic burner control system. This standard is applicable to Type B52x and Type B53x systems (see 4.3) intended for use in other than domestic dwellings, in which
35、 the supply of combustion air and/or the evacuation of the products of combustion is achieved by mechanical means. This standard is not applicable to: a) systems designed for use in domestic dwellings; b) outdoor systems; c) systems of heat input in excess of 120 kW (based on the net calorific value
36、 of the appropriate reference test gas); d) systems having a draught diverter incorporated between the exhaust fan and the flue duct; e) systems having fully pre-mixed gas and air burners in which: 1) either the gas and all the combustion air are brought together just before the level of the combust
37、ion zone; or 2) the pre-mixing of the gas and all combustion air is carried out in a part of the burner upstream of the combustion zone; f) systems that are designed for continuous condensation within the flue system under normal operating conditions; g) systems having combustion products evacuation
38、 ducts that are non-metallic. This standard is applicable to systems which are intended to be type tested. It also includes requirements concerning the evaluation of conformity, including factory production control, but these requirements only apply to POCEDs and their associated terminals. NOTE Req
39、uirements for systems which are not intended to be type tested would need to be subject to further consideration. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the editions cited applies. For undated refer
40、ences, the latest edition of the referenced document (including any amendments) applies. EN 88-1:2007, Pressure regulators and associated safety devices for gas appliances - Part 1: Pressure regulators for inlet pressures up to and including 500 mbar EN 126:2004, Multifunctional controls for gas bur
41、ning appliances EN 161:2007, Automatic shut-off valves for gas burners and gas appliances EN 257, Mechanical thermostats for gas-burning appliances Licensed CopyChinese University of Hong Kong, 13/06/2009 07:48, Uncontrolled Copy, (c) BSI BS EN 777-3:2009 EN 777-3:2009 (E) 6 EN 298:2003, Automatic g
42、as burner control systems gas burners and gas burning appliances with or without fans EN 437:2003, Test gases - Test pressures - Appliance categories EN 10226-1:2004, Pipe threads where pressure tight joints are made on the threads Part 1: Taper external threads and parallel internal threads - Dimen
43、sions, tolerances and designation EN 10226-2:2005, Pipe threads where pressure tight joints are made on the threads Part 2: Taper external threads and taper internal threads - Dimensions, tolerances and designation EN 60335-1:2002, Household and similar electrical appliances Safety - Part 1: General
44、 requirements EN 60335-2-102:2006, Household and similar electrical appliances Safety - Part 2-102: Particular requirements for gas, oil and solid-fuel burning having electrical connections EN 60529:1992, Degrees of protection provided by enclosures (IP code) EN 60584-1:1995, Thermocouples Part 1: R
45、eference tables EN 60584-2:1993, Thermocouples Part 2: Tolerances EN ISO 228-1:2003, Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation (ISO 228-1:2000) EN ISO 3166-1:2006, Codes for the representation of names of countries and their
46、 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) ISO 7005-1:1992, Metallic flanges
47、- Part 1: Steel flanges ISO 7005-2:1988, Metallic flanges - Part 2: Cast iron flanges ISO 7005-3:1988, Metallic flanges - Part 3: Copper alloy and composite flanges CR 1404:1994, Determination of emissions from appliances burning gaseous fuels during type testing 3 Terms and definitions For the purp
48、oses of this standard the following terms and definitions apply: 3.1 System and its constituent parts 3.1.1 overhead radiant tube heater gas-fired appliance intended for installation above head level which is designed to heat the space beneath by radiation by means of a tube or tubes, heated by the
49、internal passage of combustion products 3.1.2 multi-burner systems those radiant tube heater systems which employ two or more burner units with each unit incorporating independent flame monitoring. Licensed CopyChinese University of Hong Kong, 13/06/2009 07:48, Uncontrolled Copy, (c) BSI BS EN 777-3:2009 EN 777-3:2009 (E) 7 NOTE The units may be located in one or more sections of tubing. One or more fans may be used to assist in the evacuation of products of combustion or the supply of combustion air System F: a system in which individual units w