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!$YX2“15453
2、15www.din.deDDIN EN 777-4Multi-burner gas-fired overhead radiant tube heater systems fornon-domestic use Part 4: System H SafetyEnglish version of DIN EN 777-4:2009-09Dunkelstrahlersysteme mit mehreren Brennern mit Geblse fr gewerbliche undindustrielle Anwendung Teil 4: System H SicherheitEnglische
3、Fassung DIN EN 777-4:2009-09SupersedesDIN EN 777-4:2003-03www.beuth.deDocument comprises pages113DIN EN 777-4:2009-09 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 will be permitted once
4、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 heaters and non-domes
5、tic 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 Cooking Equipment Stan
6、dards 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 Technical and Scien
7、tific 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 777-4:2003-03 as follows: a) Th
8、e systems within the scope of the standard are now defined as Type B52appliances (instead of Type B22). b) Requirements for combustion products evacuation ducts (POCEDs), supplied as an integral part of the appliance, have been specified. Previous editions DIN 3372-6: 1988-12 DIN EN 777-4: 1999-07,
9、2003-03 DIN EN 777-4/A2: 2002-03 DIN EN 777-4/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 ISO 6976:2005-09, Natural gas Calculation of cal
10、orific 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 777-4March 2009ICS 91.140.40 Supersedes EN 777-4:1999 English VersionMulti-burner gas-
11、fired overhead radiant tube heater systems fornon-domestic use - Part 4: System H - SafetyTubes radiants suspendus multi-brleurs utilisant lescombustibles gazeux usage non-domestique - Partie 4 :Systme H - ScuritDunkelstrahlersysteme mit mehrerenBrennern mit Geblse fr gewerbliche undindustrielle Anw
12、endung - Teil 4: System H - 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 standard without any alteration. Up-t
13、o-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 other language made by translationunder
14、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, Finland,France, Germany, Greece, Hunga
15、ry, 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 KOMITEE FR NORMUNGManagement Centre: Ave
16、nue 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 777-4:2009: EEN 777-4:2009 (E) 2 Contents Page Foreword . 4 1 Scope 5 2 Normative references . 5 3 Terms and definitions . 6 3.1 System and its const
17、ituent parts 6 3.2 Combustion circuit . 8 3.3 Adjusting, control and safety devices 9 3.4 System operation 10 3.5 Gases 13 3.6 Conditions of operation and measurement 14 3.7 Country of destination 14 4 Classification of systems . 15 4.1 Classification according to the nature of the gases used (categ
18、ories) 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 devices .
19、 26 5.4 Main burners 27 5.5 Pressure test points 27 5.6 Injectors . 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
20、.8 Measurements 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 39 7.4 Other pollutants 53 8 Marking and instructions . 56 8.1 Marking of the system and the packaging . 56 8.2 Instructions 60 8.3 Presentation 64 9 Evaluation
21、of conformity of POCEDs and their associated terminals 64 9.1 General . 64 9.2 Type testing . 64 9.3 Factory production control (FPC) . 65 Annex A (informative) National situations . 67 A.1 General . 67 A.2 Categories listed in the body of the standard and marketed in different countries 67 DIN EN 7
22、77-4:2009-09 EN 777-4:2009 (E) 3 A.3 Appliance supply pressures corresponding to the categories given in A.2 69 A.4 Special categories marketed nationally or locally . 71 A.5 Test gases corresponding to the special categories given in A.4 . 75 A.6 Gas connections in the various countries . 76 A.7 Fl
23、ue connections in the various countries . 78 Annex B (informative) System H . 79 Annex C (informative) Equivalence rules . 80 C.1 Conversion to categories within a restricted Wobbe Index range 80 C.2 Conversion to categories within an identical Wobbe Index range 80 C.3 Conversion to categories withi
24、n a wider Wobbe Index range 81 Annex D (informative) Calculation of the mass flow rate of flue gases 82 D.1 Flue gas mass flow rate 82 D.2 Quantity of air in the flue gas 82 D.3 Flue gas excess air ratio () . 83 D.4 Quantity of water vapour in the flue gas 83 D.5 Quantity of Nitrogen in the flue gas
25、 83 D.6 Quantity of Oxygen in the flue gas 83 D.7 Dry quantity of flue gas 84 D.8 Quantity of carbon dioxide in the flue gas . 84 Annex E (informative) Identification of gas types in use in various countries 86 Annex F (normative) Special national conditions . 87 F.1 General . 87 Annex G (informativ
26、e) Example of calculation of the weighting factors for a system with several rates 88 G.1 Appliance rates . 88 G.2 Weighting of Qpi,%= 20 88 G.3 Weighting of Qpi,%= 40 88 G.4 Weighting of Qpi,%= 60 88 G.5 Weighting of Qpi,%= 70 89 G.6 Total weighting 89 Annex H (informative) Calculation of conversio
27、ns of NOx. 90 H.1 NOxemission conversion factors 90 H.2 NOxConversion Calculation 91 Annex I (informative) National situations of countries whose national bodies are CEN associate members . 93 Annex J (informative) An example of sampling plans 94 J.1 Sampling plans 94 J.2 Inspection levels and proce
28、dures . 95 Annex K (informative) Flue determination . 96 K.1 General conditions of test 96 K.2 Test conditions 96 K.3 Test procedure 96 K.4 Accuracy of measurement . 98 K.5 Calculation of Flue Loss. 98 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or othe
29、r provisions of EU Directives . 101 Annex ZB (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive 104 ZB.1 Scope and relevant characteristics . 104 ZB.2 Procedure(s) for attestation of conformity of construction products 106 ZB.3 CE mark
30、ing and labelling . 109 Bibliography . 111 DIN EN 777-4:2009-09 EN 777-4:2009 (E) 4 Foreword This document (EN 777-4:2009) 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 whi
31、ch is held by AFNOR. 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 th
32、e possibility that 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 777-4:1999. This revision modifies EN 777-4:1999. It has been prepared to incorpor
33、ate requirements 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 B52rather than Type B22
34、. 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 of EC Direct
35、ive(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: Austria, Belg
36、ium, 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 777-4:2009-
37、09 EN 777-4:2009 (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 systems incorporating two or more burner units with each burner under the control of an automatic
38、 burner control system, and operated by a single fan providing a single flue outlet, called system H and referred to in the body of the text as the “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
39、air and the evacuation of the products of combustion is achieved by mechanical means. This standard is applicable only to such systems that have fully pre-mixed gas/air burners. This standard is not applicable to: a) systems designed for use in domestic dwellings; b) outdoor systems; c) systems of h
40、eat 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 that are designed for continuous condensation within the flue system under normal operating conditions; f) systems having combustion products evacu
41、ation 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. NOT
42、E 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 this European Standard. 2 Normative references The following referenced documents are indispensable for
43、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 regulators and associated safety devices for gas appliances - Part 1: Pressure reg
44、ulators 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 thermostats for gas-burning appliances EN 298:2003, Automatic gas burner control syst
45、ems gas burners and gas burning appliances with or without fans DIN EN 777-4:2009-09 EN 777-4:2009 (E) 6 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 inter
46、nal 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 and designation EN 60335-1:2002, Household and similar electrical appliances Safet
47、y - 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 60529:1992, Degrees of protection provided by enclosures (IP code) EN 60584-1:1995, Ther
48、mocouples 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
49、countries and their 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 - 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, Determination of emissions from appliance
