1、BS EN 778:2009ICS 97.100.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDDomestic gas-firedforced convectionair heaters for spaceheating not exceedinga net heat input of 70kW, without a fan toassist transportation ofcombustion air and/orcombustion productsThis
2、 British Standardwas published underthe authority of theStandards Policy andStrategy Committee on 30November 2009. BSI 2009ISBN 978 0 580 58603 3Amendments/corrigenda issued since publicationDate CommentsBS EN 778:2009National forewordThis British Standard is the UK implementation of EN 778:2009. It
3、supersedes BS EN 778:1998 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GSE/20, Non-domestic space heaters (gas).A list of organizations represented on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 incl
4、ude all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 778:2009EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 778 October 2009 ICS 97.100.20 Supersedes EN 778:1998Eng
5、lish Version Domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 70 kW, without a fan to assist transportation of combustion air and/or combustion products Gnrateurs dair chaud convection force utilisant les combustibles gazeux pour le chauffage de lo
6、caux usage dhabitation de dbit calorifique sur Hi infrieur ou gal 70 kW, sans ventilateur pour aider lalimentation en air comburant et/ou lvacuation des produits de combustion Gasbefeuerte Warmlufterzeuger mit erzwungener Konvektion zum Beheizen von Rumen fr den huslichen Gebrauch mit einer Nennwrme
7、belastung nicht ber 70 kW, ohne Geblse zur Befrderung der Verbrennungsluft und/oder der Abgase This European Standard was approved by CEN on 12 September 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard t
8、he 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Ger
9、man). 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 as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech
10、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 United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPE
11、N DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 778:2009: EBS EN 778:2009EN 778:2009 (E) 2 Contents Page Foreword 41 Scope
12、62 Normative references 73 Terms and definitions .83.1 Appliance and its constituent parts .83.2 Adjustment, control and safety devices . 103.3 Operation of the appliance 133.4 Gases . 153.5 Conditions of operation and measurement . 163.6 Marking of the appliance and packaging . 174 Classification .
13、 174.1 Classification of gases . 174.2 Classification of appliance 185 Construction and design requirements . 215.1 General . 215.2 Adjusting, control and safety devices 275.3 Ignition devices . 315.4 Flame supervision system . 315.5 Start-gas flame establishment . 325.6 Main flame establishment 335
14、.7 Main burner . 335.8 Facility for remote control . 345.9 Thermostats and control of air temperature 345.10 Gas pressure test points 356 Operational requirements 356.1 Safety of operation . 356.2 Efficiency . 417 Test methods . 427.1 General . 427.2 Construction and design . 497.3 Safety of operati
15、on . 507.4 Efficiency . 828 Marking and instructions . 878.1 Marking of the appliance 878.2 Marking of the packaging 888.3 Utilization of symbols on the appliance and packaging . 898.4 Instructions . 919 Evaluation of POCED conformity and their associated terminals . 939.1 General . 939.2 Type testi
16、ng . 939.3 Factory production control (FPC) . 93Annex A (informative) National situations . 96A.1 General . 96A.2 Categories listed in the body of the standard and marketed in different countries 96A.3 Appliance supply pressures corresponding to the categories given in A.2 98A.4 Special categories m
17、arketed nationally or locally 99A.5 Test gases corresponding to the special categories given in A.4 105BS EN 778:2009EN 778:2009 (E) 3 A.6 Gas connections in the various countries 108A.7 Flue connections in the various countries . 110Annex B (informative) Equivalence rules)111B.1 Conversion to categ
18、ories within a restricted Wobbe index range . 111B.2 Conversion to categories within an identical Wobbe index range. 111B.3 Conversion to categories within a wider Wobbe index range 112Annex C (informative) A-deviations 113C.1 General . 113C.2 Switzerland . 113Annex D (normative) Special national co
19、nditions . 114D.1 Special national conditions 114D.2 Belgium. 114D.3 Italy 114D.4 Poland . 114Annex E (informative) Identification of gas types in use in various countries . 115Annex F (informative) National solutions for countries whose national bodies are Affiliate Members of CEN 116F.1 Categories
20、 listed in the body of the standard and marketed in different countries 116F.2 Appliance supply pressures corresponding to the categories given in F.1 . 116F.3 Special categories marketed nationally or locally . 116F.4 Gases and test pressures corresponding to the special categories given in F.3 116
21、Annex G (informative) Calculation of conversions of NOx . 117Annex H (informative) An example of sampling plans 118H.1 Sampling plans 118H.2 Inspection levels and procedures . 119Annex ZA (informative) 120Annex ZB (normative) Clauses of this European Standard addressing the provisions of the EU Cons
22、truction Products Directive . 122ZB.1 Scope and relevant characteristics . 122ZB.2 Procedure(s) for attestation of conformity of construction products . 124ZB.3 CE marking and labelling 126Bibliography 128BS EN 778:2009EN 778:2009 (E) 4 Foreword This document (EN 778:2009) has been prepared by Techn
23、ical 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 national standard, either by publication of an identical text or by endors
24、ement, at the latest by April 2010, and conflicting national standards shall be withdrawn at the latest by April 2010. Attention is drawn to the 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 identifyin
25、g any or all such patent rights. This document supersedes EN 778:1998. 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 EU Directive(s). For relationship with EU Directive(s), see i
26、nformative Annex ZA, and Annex ZB, which are integral parts of this document. This revision modifies EN 778:1998. It has been prepared to incorporate requirements for combustion products evacuation ducts, POCEDs, supplied as an integral part of the system to support the EU Directive 89/106/EEC on co
27、nstruction products under mandate M 105. To this end, it extends the scope of the standard to cover type B4 appliances. Furthermore, the opportunity presented by this revision has been taken to update the standard in respect to EN 437:2003. NOTE For countries requesting special categories (specified
28、 in EN 437:2003), the absence of specific information concerning A.3.3 and A.3.4 implies that the general requirements described in the body of the standard (see 4.1.1, 4.2.2, 4.2.3 and 4.2.5) also apply to these special categories. EN 525, Non-domestic direct gas-fired forced convection air heaters
29、 for space heating not exceeding a net heat input of 300 kW EN 621, Non-domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW, without a fan to assist transportation of combustion air and/or combustion products EN 1020, Non-domestic gas-fired for
30、ced convection air heaters for space heating not exceeding a net heat input of 300 kW, incorporating a fan to assist transportation of combustion air and/or combustion products EN 1196, Domestic and non-domestic gas-fired air heaters Supplementary requirements for condensing air heaters EN 1319, Dom
31、estic gas-fired forced convection air heaters for space heating, with fan-assisted burners not exceeding a net heat input of 70 kW EN 12669, Direct gas-fired hot air blowers for use in greenhouses and supplementary non-domestic space heating BS EN 778:2009EN 778:2009 (E) 5 According to the CEN/CENEL
32、EC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembo
33、urg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 778:2009EN 778:2009 (E) 6 1 Scope This European Standard specifies the requirements and test methods for the safety and efficiency of domestic gas-fired air heater
34、s with (an) atmospheric burner(s) and without a fan to assist the transportation of combustion air and/or flue gases, hereafter referred to as “appliances“. This European Standard applies to Type B11, B11AS, B11BS, B41, B41AS, B41BSC11, C21, C31and C41appliances with an input not exceeding 70 kW (ne
35、t cv-basis), intended primarily for use in single unit residential dwellings. Provision of the heated air may be by means of ducting. This European Standard does not apply to: a) appliances of the condensing type; b) appliances for outdoor installation; c) dual purpose air conditioning appliances (h
36、eating and cooling); d) appliances where the air is heated by an intermediate fluid; e) appliances with forced draught burners; f) appliances fitted with a manual or automatic means of adjusting the combustion air supply or the combustion products evacuation (including flue dampers); g) portable or
37、transportable forced convection appliances; h) appliances having multiple heating units with a single draught diverter; i) appliances fitted with more than one flue outlet; j) C21and C41appliances for 3rd family gases; NOTE For C41appliances, see all requirements and test methods that are valid for
38、C21appliances, unless otherwise stated. k) appliances that are designed for continuous condensation within the flue system under normal operating conditions; l) appliances having Products Of Combustion Evacuation Ducts (POCED), that are non-metallic. This European Standard is applicable to appliance
39、s 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. BS EN 778:2009EN 778:2009 (E) 7 2 Normative references The following refere
40、nced documents are indispensable for the application of this document. For dated references, only the edition 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 g
41、as appliances Part 1: Pressure regulators for inlet pressures up to and including 500 mbar EN 125:1991, Flame supervision devices for gas burning appliances Thermo-electric flame supervision devices EN 126:2004, Multifuctional controls for gas burning appliances EN 161:2007, Automatic shut-off valve
42、s for gas burners and gas appliances EN 257:1992, Mechanical thermostats for gas-burning appliances EN 298:2003, Automatic gas burner control systems for gas burners and gas burning appliances with or without fans EN 437:2003, Test gases Test pressures Appliance categories EN 1859:2000, Chimneys Met
43、al Chimneys Test methods 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 threads where pressure tight joints are made on the threads Part 2: Tap
44、er external threads and taper internal threads Dimensions, tolerances and designation EN 60335-1:2002, Household and similar electrical appliances Safety Part 1: General requirements (IEC 60335-1:2001, modified) EN 60335-2-102:2006, Household and similar electrical appliances Safety Part 2-102: Part
45、icular requirements for gas, oil and solid-fuel burning appliances having electrical connections (IEC 60335-2- 102:2004, modified) EN 60529:1992, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN 60730-1:2000, Automatic electrical controls for household and similar use Part
46、1: General requirements (IEC 60730-1:1999, modified) EN 60730-2-1:1997, Automatic electrical controls for household and similar use Part 2-1: Particular requirements for electrical controls for electrical household appliances (IEC 60730-2-1:1989, modified) EN 60730-2-9:2002, Automatic electrical con
47、trols for household and similar use Part 2-9: Particular requirements for temperature sensing controls (IEC 60730-2-9:2000, modified) EN 61058-1:2002, Switches for appliances Part 1: General requirements (IEC 61058-1:2000 + A1:2001, modified) EN ISO 228-1:2003, Pipe threads where pressure-tight join
48、ts 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) BS EN 778:2009EN 778:2009 (E) 8 EN ISO 6976:2005, Natural gas Calculati
49、on of the calorific value, density, relative density and Wobbe index from composition (ISO 6976:1995 including Corrigendum 1:1997, Corrigendum 2:1997 and Corrigendum 3:1999) ISO 1182:2002, Reaction to fire tests for building products Non-combustibility test ISO 7005-1:1992, Metallic flanges Part 1: Steel flanges ISO 7005-2:1988, Metallic flanges P
