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!$YX-“15453
2、10www.din.deDDIN EN 777-3Multi-burner gas-fired overhead radiant tube heater systems for nondomestic use Part 3: System F SafetyEnglish version of DIN EN 777-3:2009-09Dunkelstrahlersysteme mit mehreren Brennern mit Geblse fr gewerbliche undindustrielle Anwendung Teil 3: System F SicherheitEnglische
3、Fassung DIN EN 777-3:2009-09SupersedesDIN EN 777-3:2003-03See start of validitywww.beuth.deDocument comprises pages112DIN EN 777-3:2009-09 Start of validity This standard is due to take effect on 1 September 2009. It should be noted that, in Germany, CE conformity marking of construction products wi
4、ll be 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
5、heaters 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 C
6、ooking 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. (Germa
7、n Technical 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 777-3:2003
8、-03 as follows: a) The systems within the scope of the standard are now defined as Type B52xand Type B53xappliances (instead of Type B22xand Type B23x). b) Requirements for combustion products evacuation ducts (POCEDs), supplied as an integral part of the appliance, have been specified. Previous edi
9、tions DIN 3372-6: 1988-12 DIN EN 777-3: 2000-10, 2003-03 DIN EN 777-3/A2: 2002-03 DIN EN 777-3/A3: 2002-10 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
10、 ISO 6976:2005-09, 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 777-3March 2009ICS 91.140.40 Supersed
11、es EN 777-3:1999 English VersionMulti-burner gas-fired overhead radiant tube heater systems fornon domestic use - Part 3: System F - SafetyTubes radiants suspendus multi-brleurs utilisant lescombustibles gazeux usage non-domestique - Partie 3 :Systme F - ScuritDunkelstrahlersysteme mit mehreren Bren
12、nern mit Geblsefr gewerbliche und industrielle Anwendung - Teil 3:System F - 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
13、 a national 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 versio
14、n in any other 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
15、, Estonia, Finland,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 NORMALISATIONEUR
16、OPISCHES KOMITEE 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 777-3:2009: EEN 777-3:2009 (E) 2 Contents Page Foreword . 41 Scope 52 Normative references . 53 Term
17、s and definitions . 63.1 System and its constituent parts 63.2 Adjusting, control and safety devices 93.3 System operation 103.4 Gases 133.5 Conditions of operation and measurement 143.6 Country of destination 144 System classification 154.1 Classification according to the nature of the gases used (
18、categories) 154.2 Classification according to the gases capable of being used . 154.3 Classification according to the mode of evacuation of the combustion products 175 Constructional requirements . 175.1 General . 175.2 Requirements for adjusting, control and safety devices 225.3 Ignition devices .
19、275.4 Main burners 285.5 Pressure test points 285.6 Injectors . 286 Operational requirements 296.1 Soundness . 296.2 Heat inputs . 296.3 Limiting temperatures 296.4 Ignition, cross-lighting and flame stability . 306.5 Pressure regulator 306.6 Combustion . 306.7 Air-proving device in the common duct
20、. 316.8 Prolonged performance 316.9 Measurements of oxides of Nitrogen, NOx. 327 Test methods . 327.1 General . 327.2 Construction and design 397.3 Safety of operation 397.4 Other pollutants 528 Marking and instructions . 558.1 Marking of the system and the packaging . 558.2 Instructions 598.3 Prese
21、ntation 639 Evaluation of conformity of POCEDs and their associated terminals 639.1 General . 639.2 Type testing . 639.3 Factory production control (FPC) . 64Annex A (informative) National situations . 66A.1 General . 66A.2 Categories listed in the body of the standard and marketed in different coun
22、tries 66DIN EN 777-3:2009-09 EN 777-3:2009 (E) 3 A.3 Appliance supply pressures corresponding to the categories given in A.2 68A.4 Special categories marketed nationally or locally . 70A.5 Test gases corresponding to the special categories given in A.4 . 74A.6 Gas connections in the various countrie
23、s . 75A.7 Flue connections in the various countries . 77Annex B (informative) System F . 78Annex C (informative) Equivalence rules . 79C.1 Conversion to categories within a restricted Wobbe Index range 79C.2 Conversion to categories within an identical Wobbe Index range 79C.3 Conversion to categorie
24、s within a wider Wobbe Index range 80Annex D (informative) Calculation of the mass flow rate of flue gases 81D.1 Flue gas mass flow rate 81D.2 Quantity of air in the flue gas 81D.3 Flue gas excess air ratio () . 82D.4 Quantity of water vapour in the flue gas 82D.5 Quantity of Nitrogen in the flue ga
25、s 82D.6 Quantity of Oxygen in the flue gas 82D.7 Dry quantity of flue gas 83D.8 Quantity of carbon dioxide in the flue gas . 83Annex E (informative) Identification of gas types in use in various countries 85Annex F (normative) Special national conditions . 86F.1 General . 86Annex G (informative) Cal
26、culation example of the weighting factors for a system with several rates 87G.1 Appliance rates . 87G.2 Weighting of Qpi,%= 20 87G.3 Weighting of Qpi,%= 40 87G.4 Weighting of Qpi,%= 60 87G.5 Weighting of Qpi,%= 70 88G.6 Total weighting 88Annex H (informative) NOxconversion calculation . 89H.1 NOxemi
27、ssion conversion factors 89H.2 NOxConversion Calculation 90Annex I (informative) National situations of countries whose national bodies are CEN associate members . 92Annex J (informative) An example of sampling plans 93J.1 Sampling plans 93J.2 Inspection levels and procedures . 94Annex K . 95K.1 Gen
28、eral conditions of test 95K.2 Test conditions 95K.3 Test procedure 95K.4 Accuracy of measurement . 97K.5 Calculation of Flue Loss. 97Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives . 100Annex ZB (informative) Clauses of
29、this European Standard addressing the provisions of the EU Construction Products Directive 103ZB.1 Scope and relevant characteristics . 103ZB.2 Procedure(s) for attestation of conformity of construction products 105ZB.3 CE marking and labelling . 108Bibliography . 110DIN EN 777-3:2009-09 EN 777-3:20
30、09 (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 given the status of a
31、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 document may be the subject
32、 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 ducts, POCEDs, supplied
33、 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 B52xand Type B53x rather than Type B22x and Type B23x.Furthermore, the opportunity presented by th
34、is 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 relationship with EC Directive(s),
35、 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, Czech Republic, Denmark
36、, 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 777-3:2009-09 EN 777-3:2009 (E) 5 1 Scope This European S
37、tandard 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 F and referred to in the body of the text as the “system”) with each burner unit
38、 under the control of an automatic burner control system. This standard is applicable to Type B52xand Type B53xsystems (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 mean
39、s. 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 of the appropriate reference test gas); d) systems having a draught diverter incorporated between the exhaust f
40、an 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 carried out in a part of the burner upstream
41、 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 which are intended to be type tested. It al
42、so 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 to be subject to further consideration
43、. 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 88-1:2007, Pressure
44、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 EN 257, Mechanical the
45、rmostats for gas-burning appliances DIN EN 777-3:2009-09 EN 777-3:2009 (E) 6 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 where pressure tigh
46、t 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 - Dimensions, tolerances
47、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 connections EN 60529:
48、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, 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 - Calcul
