1、BRITISH STANDARDBS EN14785:2006Residential space heating appliances fired by wood pellets Requirements and test methodsThe European Standard EN 14785:2006 has the status of a British StandardICS 97.100.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g
2、3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14785:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006ISBN 0 580 49039 4National forewordThis British Stand
3、ard is the official English language version of EN 14785:2006. The UK participation in its preparation was entrusted to Technical Committee RHE/28, Domestic solid mineral fuel appliances, which has the responsibility to: A list of organizations represented on this committee can be obtained on reques
4、t to its secretary.Textual errorThe textual error set out below was discovered when the English language version of EN 14785:2006 was adopted as the national standard. It has been reported to CEN in a proposal to amend the text of the European standard.In clause 2 correct the title of EN 10226-3 as
5、follows:EN 10226-3 Pipes threads where pressure tight joints are made on the threads Part 3: Verification by means of limit gaugesCross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the sect
6、ion entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Co
7、mpliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related
8、international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 72, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document
9、was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14785June 2006ICS 97.100.30English VersionResidential space heating appliances fired by wood pellets -Requirements and test methodsAppareils de chauffage domestique convection g
10、ranuls de bois - Exigences et mthodes dessaiRaumheizer zur Verfeuerung von Holzpellets -Anforderungen und PrfverfahrenThis European Standard was approved by CEN on 3 May 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Euro
11、peanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, F
12、rench, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Repub
13、lic, 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 STANDARDIZATIONCOMIT EUROPEN DE NORM
14、ALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14785:2006: EEN 14785:2006 (E) 2 Contents Page Foreword .5 1 Scope6 2 Normative refere
15、nces6 3 Terms and definitions .7 3.1 Appliances .7 3.2 Functional characteristics8 3.3 Characteristics.10 3.4 Fuels .12 4 Materials, design and construction.12 4.1 Production documentation.12 4.2 General construction requirements 13 4.3 Flue spigot or socket 13 4.4 Combustion control device14 4.5 Fl
16、ueways 14 4.6 Cleaning tools14 4.7 Firedoors14 4.8 Combustion air supply .14 4.8.1 Primary air inlet control14 4.8.2 Secondary air inlet control.15 4.9 Internal flue gas diverter.15 4.10 Retort15 4.11 Ashpan and ash removal15 4.12 Integral boiler.15 4.12.2 Nominal minimum wall thickness (steels) 18
17、4.12.3 Welding seams and welding fillers18 4.12.4 Minimum wall thicknesses (cast iron).18 4.12.5 Cast iron parts subject to water pressure 19 4.12.6 Venting of the water sections 19 4.12.7 Water tightness19 4.12.8 Water side connections19 4.12.9 Boiler internal waterways.20 4.13 Control of flue gas.
18、21 4.14 Cleaning of heating surfaces .21 5 Safety21 5.1 Temperatures of adjacent combustible materials .21 5.2 Operating tools21 5.3 Safety test for spillage of combustion gas and discharge of embers.21 5.4 Temperature in the fuel hopper .22 5.5 Safety against back burning through the fuel conveyor
19、system .22 5.6 Safety against overheating the boiler water.22 5.7 Thermal discharge control .22 5.8 Strength and leaktightness of boiler shells22 5.9 Electrical safety .22 6 Performance.22 6.1 Flue draught.22 6.2 Flue gas temperature 23 6.3 Carbon monoxide emission for pellet stoves 23 6.4 Efficient
20、 energy utilization23 6.4.1 General .23 EN 14785:2006 (E) 3 6.4.2 Efficiency at nominal heat output and at reduced heat output 23 6.5 Nominal heat output . 23 6.6 Reduced heat output 23 6.7 Water heating output 23 6.8 Space heating output 23 6.9 Hopper capacity 24 6.10 User operations. 24 7 Applianc
21、e instructions . 24 7.1 General. 24 7.2 Installation instructions 24 7.3 User operating instructions . 25 8 Marking 26 9 Evaluation of conformity 27 9.1 General. 27 9.2 Type testing . 27 9.2.1 Initial type testing 27 9.2.2 Further type testing 28 9.3 Factory production control (FPC) . 31 9.3.1 Gener
22、al. 31 9.3.2 Raw materials and components 31 9.3.3 Control of inspection, measuring and test equipment . 31 9.3.4 Process control. 31 9.3.5 Product inspection, testing and evaluation . 32 9.3.6 Non conforming products 33 9.3.7 Corrective and preventive action 33 9.3.8 Handling, storage, packaging, p
23、reservation and delivery 33 Annex A (normative) Test methods 34 A.1 Test environment 34 A.1.1 Ambient room temperature 34 A.1.2 Cross-draught . 34 A.1.3 External sources . 34 A.2 Test assembly . 34 A.2.1 General. 34 A.2.2 Trihedron . 35 A.2.3 Measurement section . 35 A.2.4 Connection of appliance to
24、 measurement section 36 A.2.5 Water circuit for appliances with boilers 37 A.3 Measurement equipment 37 A.4 Test procedures 38 A.4.1 Appliance installation. 38 A.4.2 Calculation of fuel load. 38 A.4.3 Fuelling and de-ashing the fire 38 A.4.4 Flue gas losses . 38 A.4.5 Water heating output 39 A.4.6 C
25、ombustible heat losses in the residue . 39 A.4.7 Performance test at nominal heat output. 39 A.4.8 Reduced heat output test. 41 A.4.9 Safety tests 42 A.5 Test results 44 A.6 Calculation methods. 45 A.6.1 Notations and units used . 45 A.6.2 Formulae 46 A.7 Test report . 49 Annex B (normative) Test fu
26、els and recommended fuels 62 B.1 General. 62 B.2 Test fuel . 62 B.2.1 Selection of test fuel. 62 EN 14785:2006 (E) 4 B.2.2 Storage, preparation and analysis.62 B.3 Tests for recommended fuels 63 B.3.1 Basis of testing63 B.3.2 Test methods and criteria.64 Annex ZA (informative) Clauses of this Europe
27、an Standard addressing the provisions of the EU Construction Products Directive .66 ZA.1 Scope and relevant characteristics.66 ZA.2 Procedure for attestation of conformity of residential space heating appliances fired by wood pellets.68 ZA.2.1 System of attestation of conformity68 ZA.2.2 EC Certific
28、ate and Declaration of conformity.69 ZA.3 CE marking and labelling .70 Bibliography72 EN 14785:2006 (E) 5 Foreword This document (EN 14785:2006) has been prepared by Technical Committee CEN/TC 295 “Residential solid fuel burning appliances”, the secretariat of which is held by BSI. This European Sta
29、ndard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2006, and conflicting national standards shall be withdrawn at the latest by December 2006. This document has been prepared under a mandate given to CEN by
30、the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive “Construction products“. For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, t
31、he national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pol
32、and, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14785:2006 (E) 6 1 Scope This European Standard specifies requirements relating to the design, manufacture, construction, safety and performance (efficiency and emissions), instructions and marking together
33、 with associated test methods and test fuels for type-testing residential space heaters fired by wood pellets, and mechanically fed up to 50 kW nominal heat output. These appliances may be freestanding or inset appliances and provide heat into the space where they are installed and may be operated w
34、ith either natural draught or fan-assisted combustion air. Additionally, where fitted with a boiler, they also provide domestic hot water and/or central heating. These appliances burn wood pellets only, in accordance with the appliance manufacturers instructions. They operate with firedoors closed o
35、nly. Non mechanically fed appliances burning solid mineral fuels, peat briquettes and natural or manufactured wood logs are not included in this European Standard, but are covered by EN 13229 and EN 13240. NOTE These appliances may have an integral fuel hopper or be combined with an external fuel ho
36、pper. 2 Normative references The following referenced 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 1561:1997, Foundi
37、ng Grey cast irons EN 1563:1997, Founding Spheroidal graphite cast irons EN 10025:2004 (all parts), Hot rolled products of structural steels EN 10027-2:1992, Designation systems for steels Part 2: Numerical system EN 10028-2:2003, Flat products made of steels for pressure purposes Part 2: Non-alloy
38、and alloy steels with specified elevated temperature properties EN 10029:1991, Hot rolled steel plates 3 mm thick or above Tolerances on dimensions, shape and mass EN 10088-2:2005, Stainless steels Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for gene
39、ral purposes EN 10111, Continuously hot-rolled low carbon steel sheet and strip for cold forming Technical delivery conditions EN 10120:1996, Steel sheet and strip for welded gas cylinders EN 10226-3, Pipe threads where pressure-tight joints are made on the threads Part 2: Verification by means of l
40、imit gauges CEN/TS 14774-1:2004, Solid biofuels Methods for determination of moisture content Oven dry method Part 1: Total moisture Reference method EN 50165:1997, Electrical equipment for non-electric appliances for houshold and simular purposes Safety requirements EN ISO 228-1:2003, Pipe threads
41、where pressure-tight joints are not made on the threads Part 1: Dimension, tolerances and designation (ISO 228-1:2000) EN 14785:2006 (E) 7 EN ISO 228-2:2003, Pipe threads where pressure-tight joints are not made on the threads Part 2: Verification by means of limit gauges (ISO 228-2:1987) ISO 7-1:19
42、94, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation ISO 334:1992, Solid mineral fuels Determination of total sulfur Eschka method ISO 351:1996, Solid mineral fuels Determination of total sulfur High temperature combustion method ISO 501
43、:2003, Hard coal Determination of the crucible swelling number ISO 562:1998, Hard coal and coke Determination of volatile matter ISO 609:1996, Solid mineral fuels Determination of carbon and hydrogen High temperature combustion method ISO 687:2004, Solid mineral fuels Coke Determination of moisture
44、in the general analysis test sample ISO 1171:1997, Solid mineral fuels Determination of ash ISO 1928:1995, Solid mineral fuels Determination of gross calorific value by the bomb calorimetric method, and calculation of net calorific value ISO 2859 (all parts), Sampling procedures for inspection by at
45、tributes 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 Appliances 3.1.1 appliance with boiler heat generator consisting of a room heating component and a water heating component in one unit 3.1.2 continuous burning appliance heating applian
46、ce designed to provide a source of heat by continuous burning and meeting the requirement of the slow combustion test 3.1.3 fireplace recess space formed in a wall or chimney breast constructed from non combustible materials, into which a heating appliance may be installed and from which a chimney f
47、lue leads 3.1.4 fireplace enclosure assembly consisting of walls and ceiling of non-combustible materials which is built on site to surround a heat generator and heat exchanger and to form a space from which hot convection air is emitted into the living space e.g. by means of air grilles 3.1.5 frees
48、tanding appliance appliance designed to operate without the need to be built into a fireplace recess or fireplace enclosure and which is not connected to the building except by the flue gas connector EN 14785:2006 (E) 8 3.1.6 inset appliance appliance with doors designed to be installed into a firep
49、lace recess or an enclosure, or into a firebox of an open fire 3.1.7 residential space heating appliance fired by wood pellets (pellet stove) free standing or inset appliance with closed door only and automatically stoked by a conveyor system. They may have an integral or external fuel hopper 3.2 Functional characteristics 3.2.1 ash content of the fuel solid matter remaining after the complete combustion of solid fuel 3.2.2 burning rate reduction in the mass of fuel per unit of time 3.2.3 combustion air air supplied
