1、September 2009DEUTSCHE NORM English price group 32No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 97.100.20!$YSx“15448
2、85www.din.deDDIN EN 777-2Multi-burner gas-fired overhead radiant tube heater systems fornon-domestic use Part 2: System E - SafetyEnglish version of DIN EN 777-2:2009-09Dunkelstrahlersysteme mit mehreren Brennern mit Geblse fr gewerbliche undindustrielle Anwendung Teil 2: System E - SicherheitEnglis
3、che Fassung DIN EN 777-2:2009-09SupersedesDIN EN 777-2:2003-03See start of validitywww.beuth.deDocument comprises pages111DIN EN 777-2:2009-09 Start of validity This standard takes effect on 1 September 2009. It should be noted that, in Germany, CE conformity marking of construction products will be
4、 permitted once this standard has been listed in the Bundesanzeiger (German Federal Gazette) and from the date given therein. National foreword This standard includes safety requirements. This standard has been prepared by Technical Committee CEN/TC 180 “Domestic and non-domestic gas fired air heate
5、rs and non-domestic gas fired overhead radiant heaters” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Gastechnik (Gas Technology Standards Committee) in collaboration with the Normenausschuss Heiz-, Koch- und Wrmgert (Heating and Cookin
6、g Equipment Standards Committee) and the Normenausschuss Heiz- und Raumlufttechnik (Heating and Ventilation Technology Standards Committee). It is intended to include this standard in the body of Codes of practice for gas issued by the DVGW Deutscher Verein des Gas- und Wasserfaches e.V. (German Tec
7、hnical and Scientific Association for Gas and Water). The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 228-1:1994 DIN EN ISO 228-1:2003-05 ISO 6976:1995 DIN EN ISO 6976:2005-09 Amendments This standard differs from DIN EN 777-2:2003-03 a
8、s follows: a) The systems within the scope of this standard are now defined as Type B52and B53appliances (instead of Type B22and Type B23). b) Requirements for combustion products evacuation ducts (POCEDs), supplied as an integral part of the appliance, have been specified. Previous editions DIN 337
9、2-6: 1988-12 DIN EN 777-2/A2: 2002-04 DIN EN 777-2/A3: 2002-10 DIN EN 777-2: 2000-10, 2003-03 National Annex NA (informative) Bibliography DIN EN ISO 228-1:2003-05, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation DIN EN ISO 6976:200
10、5-09, 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) 2 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 777-2March 2009ICS 91.140.40 Supersedes EN 777-2:1
11、999 English VersionMulti-burner gas-fired overhead radiant tube heater systems fornon-domestic use - Part 2: System E - SafetyTubes radiants suspendus multi-brleurs utilisant lescombustibles gazeux usage non-domestique - Partie 2 :Systme E - ScuritDunkelstrahlersysteme mit mehreren Brennern mit Gebl
12、se fr gewerbliche und industrielleAnwendung - Teil 2: System E - SicherheitThis European 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
13、standard without any alteration. Up-to-date lists and bibliographical references concerning 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 oth
14、er language made by translationunder the responsibility of a CEN member into its own language 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, F
15、inland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOM
16、ITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 777-2:2009: EEN 777-2:2009 (E) 2 Contents Page Foreword . 4 1 Scope 5 2 Normative references . 5 3 Terms and def
17、initions . 6 3.1 System and its constituent 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 (c
18、ategories) 15 4.2 Classification 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 devic
19、es . 27 5.4 Main burners 27 5.5 Pressure test points 27 5.6 Injectors . 28 6 Operational requirements 28 6.1 Soundness . 28 6.2 Heat inputs . 28 6.3 Limiting temperatures 29 6.4 Ignition, cross-lighting and flame stability . 29 6.5 Pressure regulator 29 6.6 Combustion . 30 6.7 Prolonged performance
20、30 6.8 Measurement of oxides of Nitrogen, NOx. 31 7 Test methods . 31 7.1 General . 31 7.2 Construction and design 38 7.3 Safety of operation 38 7.4 Other pollutants 51 8 Marking and instructions . 54 8.1 Marking of the system and the packaging . 54 8.2 Instructions 58 8.3 Presentation 62 9 Evaluati
21、on of conformity of POCEDs and their associated terminals 62 9.1 General . 62 9.2 Type testing . 62 9.3 Factory production control (FPC) . 63 Annex A (informative) National situations . 65 A.1 General . 65 A.2 Categories listed in the body of the standard and marketed in different countries 65 A.3 A
22、ppliance supply pressures corresponding to the categories given in A.2 67 DIN EN 777-2:2009-09 EN 777-2:2009 (E) 3 A.4 Special categories marketed nationally or locally . 69 A.5 Test gases corresponding to the special categories given in A.4 . 73 A.6 Gas connections in the various countries . 74 A.7
23、 Flue connections in the various countries . 76 Annex B (informative) System E . 77 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 wi
24、thin a wider Wobbe Index range 79 Annex D (informative) Calculation of flue gas mass flow rate . 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
25、D.6 Quantity of Oxygen in the flue gas 82 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) C
26、alculation example of the weighting factors 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) NOxconversion calculation . 88
27、H.1 NOxemission conversion factors 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 Ann
28、ex K (informative) Flue determination . 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 o
29、f EU Directives . 99 Annex ZB (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 labelli
30、ng . 107 Bibliography . 109 DIN EN 777-2:2009-09 EN 777-2:2009 (E) 4 Foreword This document (EN 777-2:2009) 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 A
31、FNOR. 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 September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility t
32、hat some of the elements of this document 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 777-2:1999. This revision modifies EN 777-2:1999. It has been prepared to incorporate requirement
33、s for combustion products evacuation 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 B52and Type B53 rather than Type B22 a
34、nd Type B23. Furthermore, the opportunity 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 o
35、f EC Directive(s). For relationship 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: Au
36、stria, Belgium, Bulgaria, Cyprus, 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. DIN EN
37、777-2:2009-09 EN 777-2:2009 (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-burner system (called system E and referred to in th
38、e 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 B52and Type B53systems (see 4.3) intended for use in other than domestic dwellings, in which the supply of combustion air and/or the evacuation of the
39、products of combustion is achieved by mechanical means. This standard is not 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
40、 draught diverter 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 combustion zone; or 2) the pre-mixing of the gas and all combustion air is carri
41、ed 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 ducts that are non-metallic. This standard is applicable to systems whic
42、h 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 Requirements for systems which are not intended to be type tested would need
43、 to be subject to further consideration. Requirements concerning the rational use of energy have not been included in this European Standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the editions cite
44、d applies. For undated references, 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, Multifun
45、ctional controls for gas burning appliances EN 161:2007, Automatic shut-off valves for gas burners and gas appliances DIN EN 777-2:2009-09 EN 777-2:2009 (E) 6 EN 257, Mechanical thermostats for gas-burning appliances EN 298:2003, Automatic gas burner control systems for gas burners and gas burning a
46、ppliances 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. Dimensions, tolerances and designation EN 10226-2:2005, Pipe t
47、hreads where pressure tight joints are made on the threads Part2: Taper external threads and taper internal threads. Dimensions, 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 el
48、ectrical 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: Reference tables EN 60584-2:1993, Thermocouples Part 2: Tole
49、rances 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 subdivisions Part 1: Country codes (ISO 3166-1:2006) EN ISO 6976:2005, Natural gas - Calculation of the 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 flang
