1、BS EN 777-1:2009ICS 97.100.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDMulti-burner gas-firedoverhead radiant tubeheater systems for non-domestic usePart 1: System D SafetyThis British Standardwas published under theauthority of the StandardsPolicy and Str
2、ategyCommittee on 30 April2009 BSI 2009ISBN 978 0 580 55843 6Amendments/corrigenda issued since publicationDate CommentsBS EN 777-1:2009National forewordThis British Standard is the UK implementation of EN 777-1:2009. Itsupersedes BS EN 777-1:1999 which is withdrawn.The UK participation in its prepa
3、ration was entrusted to TechnicalCommittee GSE/20, Non-domestic space heaters (gas).A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its c
4、orrect application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 777-1:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 777-1March 2009ICS 91.140.40 Supersedes EN 777-1:1999 English VersionMulti-burner gas-fired overhead radiant tube heater systems fornon
5、-domestic use - Part 1: System D - SafetyTubes radiants suspendus multi-brleurs utilisant lescombustibles gazeux usage non-domestique - Partie 1 :Systme D - ScuritDunkelstrahlersysteme mit mehreren Brennern mit Geblsefr gewerbliche und industrielle Anwendung - Teil 1:System D - SicherheitThis Europe
6、an Standard was approved by CEN on 24 January 2009.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 conce
7、rning such nationalstandards 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 translationunder the responsibility of a CEN member into its own l
8、anguage and notified to the CEN Management Centre has the same status as theofficial 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, L
9、uxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All right
10、s of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 777-1:2009: EBS EN 777-1:2009EN 777-1:2009 (E) 2 Contents Page Foreword . 4 1 Scope 5 2 Normative references . 5 3 Terms and definitions . 6 3.1 System and its constituent parts 6 3.2 Adjusting, con
11、trol 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 15 4 Classification of systems . 15 4.1 Classification according to the nature of the gases used (categories) 15 4.2 Classification according to the gases capable
12、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 . 26 5.4 Main burners 27 5.5 Pressure test points 27 5.6 Inje
13、ctors . 27 6 Operational requirements 28 6.1 Soundness . 28 6.2 Heat inputs . 28 6.3 Limiting temperatures 28 6.4 Ignition, cross-lighting and flame stability . 29 6.5 Pressure regulator 29 6.6 Combustion . 29 6.7 Prolonged performance 30 6.8 Measurement of oxides of Nitrogen, NOx. 31 7 Test methods
14、 . 31 7.1 General . 31 7.2 Construction and design 38 7.3 Safety of operation 38 7.4 Other pollutants 50 8 Marking and instructions . 53 8.1 Marking of the system and the packaging . 53 8.2 Instructions 57 8.3 Presentation 61 9 Evaluation of conformity of POCEDs and their associated terminals 61 9.1
15、 General . 61 9.2 Type testing . 61 9.3 Factory production control (FPC) . 62 Annex A (informative) National situations . 64 A.1 General . 64 A.2 Categories listed in the body of the standard and marketed in different countries 64 A.3 Appliance supply pressures corresponding to the categories given
16、in A.2 66 BS EN 777-1:2009EN 777-1:2009 (E) 3 A.4 Special categories marketed nationally or locally . 68 A.5 Test gases corresponding to the special categories given in A.4 . 72 A.6 Gas connections in the various countries . 73 A.7 Flue connections in the various countries . 75 Annex B (informative)
17、 System D . 76 B.1 Type D systems . 76 Annex C (informative) Equivalence rules . 78 C.1 Conversion to categories within a restricted Wobbe Index range 78 C.2 Conversion to categories within an identical Wobbe Index range 78 C.3 Conversion to categories within a wider Wobbe Index range 79 Annex D (in
18、formative) Calculation of the mass flow rate of flue gases 80 D.1 Flue gas mass flow rate 80 D.2 Quantity of air in the flue gas 80 D.3 Flue gas excess air ratio () . 81 D.4 Quantity of water vapour in the flue gas 81 D.5 Quantity of Nitrogen in the flue gas 81 D.6 Quantity of Oxygen in the flue gas
19、 81 D.7 Dry quantity of flue gas 82 D.8 Quantity of carbon dioxide in the flue gas . 82 Annex E (informative) Identification of gas types in use in various countries 84 Annex F (normative) Special national conditions . 85 F.1 General . 85 Annex G (informative) Calculation example of the weighting fa
20、ctors for a system with several rates 86 G.1 Appliance rates . 86 G.2 Weighting of Qpi,%= 20 86 G.3 Weighting of Qpi,%= 40 86 G.4 Weighting of Qpi,%= 60 86 G.5 Weighting of Qpi,%= 70 87 G.6 Total weighting 87 Annex H (informative) Calculation of conversions of NOx. 88 H.1 NOxemission conversion fact
21、ors 88 H.2 NOxConversion Calculation 89 Annex I (informative) National situations of countries whose national bodies are CEN associate members . 91 Annex J (informative) An example of sampling plans 92 J.1 Sampling plans 92 J.2 Inspection levels and procedures . 93 Annex K (informative) Flue determi
22、nation . 94 K.1 General conditions of test 94 K.2 Test conditions 94 K.3 Test procedure 94 K.4 Accuracy of measurement . 96 K.5 Calculation of Flue Loss. 96 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives . 99 Annex ZB (
23、informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive 102 ZB.1 Scope and relevant characteristics . 102 ZB.2 Procedure(s) for attestation of conformity of construction products 104 ZB.3 CE marking and labelling . 107 Bibliography . 109 BS
24、EN 777-1:2009EN 777-1:2009 (E) 4 Foreword This document (EN 777-1:2009) 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 b
25、e 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. Attention is drawn to the possibility that some of the elements of this doc
26、ument 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 777-1:1999. This revision modifies EN 777-1:1999. It has been prepared to incorporate requirements for combustion products evacuation
27、 ducts, 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 B52rather than Type B22. Furthermore, the opportunity presented by this re
28、vision 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 relationship with EC Directive(s), see
29、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, Czech Republic, Denmark, Est
30、onia, 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. BS EN 777-1:2009EN 777-1:2009 (E) 5 1 Scope This European Standard sp
31、ecifies 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-burner system (called system D and referred to in the body of the text as the “system”) with each burner unit under the
32、 control of an automatic burner control system. This standard is applicable to Type B52systems (see 4.3) intended for use in other than domestic dwellings, in which the supply of combustion air and/or the evacuation of the products of combustion is achieved by mechanical means. This standard is not
33、applicable to: a) systems designed for use in domestic dwelling; b) outdoor systems; c) systems of heat input in excess of 120 kW (based on the net calorific value of the appropriate reference test gas); d) systems having a draught diverter; e) systems having fully pre-mixed gas and air burners in w
34、hich: 1) either the gas and all the combustion air are brought together just before the level of the combustion 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 condensatio
35、n within the flue system under normal operating conditions; g) systems having combustion products evacuation 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 fact
36、ory production control, but these requirements only apply to POCEDs and their associated terminals. NOTE Requirements for systems which are not intended to be type tested would need to be subject to further consideration. Requirements concerning the rational use of energy have not been included in t
37、his European Standard. 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 references, the latest edition of the referenced document (including any amendments) applies. EN
38、 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 burning appliances EN 161:2007, Automatic shut-off valves for gas burners and gas appliances B
39、S EN 777-1:2009EN 777-1:2009 (E) 6 EN 257, Mechanical thermostats for gas-burning appliances EN 298:2003, Automatic gas 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 whe
40、re pressure-tight joints are made on the threads Part 1: Taper external threads and parallel internal threads - Dimensions, 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 - Dimensi
41、ons, tolerances and designation EN 60335-1:2002, Household and similar electrical appliances Safety - Part 1: General 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 conne
42、ctions EN 60529:1992, Degrees of protection provided by enclosures (IP code) EN 60584-1:1995, Thermocouples Part 1: Reference 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, toleran
43、ces and designation (ISO 228-1:2000) 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 the calorific value, density, relative density and Wobbe index from composition (I
44、SO 6976:1995 including Corrigendum 1:1997, Corrigendum 2:1997 and Corrigendum 3:1999) ISO 7005-1:1992, Metallic flanges - Part 1: Steel flanges ISO 7005-2:1988, Metallic flanges - Part 2: Cast iron flanges ISO 7005-3:1988, Metallic flanges - Part 3: Copper flanges and composite flanges CR 1404:1994,
45、 Determination of emissions from appliances burning gaseous fuels during type testing. 3 Terms and definitions For the purposes 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 install
46、ation above head level which is designed to heat the space beneath by radiation by means of a tube or tubes, heated by the internal passage of combustion products BS EN 777-1:2009EN 777-1:2009 (E) 7 3.1.2 multi-burner systems those radiant tube heater systems which employ two or more burner units wi
47、th each unit incorporating independent flame monitoring. 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 D: system in which individual units without fans are con
48、nected to a common duct with a fan. Only one burner unit is situated in each branch tube (see Annex B). Two arrangements of system D are recognized: a) system D1: having branched tubes which may be of such short length that the flame produced at the burner may extend into the common duct b) system D
49、2: having branched tubes of sufficient length that the flame produced at the burner cannot extend into the common duct 3.1.3 branch tube for the purposes of this part, a tube in which only one burner unit is situated and which only contains the products of combustion generated by this burner 3.1.4 common duct duct which receives products of combustion from two or more branch tubes for the purposes of evacuation to the outside 3.1.5 individual burner unit unit comprising a main burner and, if appropriate, an ignition burner. In addition, such componen
