Slow heat release appliances fired by solid fuel - Requirements and test methods

This European Standard specifies requirements relating to the design, manufacture, construction, safety and performance (efficiency and emission) instructions and marking together with associated test methods and test fuels for type testing residential slow heat release appliances fired by solid fuel.
This European Standard is applicable to hand fuelled intermittent burning slow heat release appliances having thermal storage capacity such that they can provide heat for a declared period of time after the fire has gone out. This European Standard also specifies a minimum time period from the appliance achieving the maximum differential surface temperature and falling to 50 % of that maximum value. These appliances provide heat into the space where they are installed.
These slow heat release appliances may be supplied either as an assembled appliance or as a manufacturer’s pre-designed unit consisting of pre-fabricated components designed to be built on site in accordance with the manufacturer’s specified assembly instructions. One off installations are not included.
These appliances may burn either solid mineral fuels, peat briquettes, natural or manufactured wood logs or be multi-fuel in accordance with the appliance manufacturer’s instructions. Wood pellets which are hand fuelled may also be burned either on the existing appliance bottomgrate or in a special basket arrangement which is placed by the user into the existing firebox.
This European Standard is not applicable to mechanically fed appliances, appliances having fan assisted combustion air or appliances with boiler.

Speicherfeuerstätten für feste Brennstoffe - Anforderungen und Prüfverfahren

Diese Europäische Norm legt Anforderungen an Auslegung, Herstellung, Ausführung, Sicherheit und Leistungsvermögen (Wirkungsgrad und Emission), Anleitung und Kennzeichnung zusammen mit zugehörigen Prüfverfahren und Prüfbrennstoffen für die Typprüfung von Raumheizern für feste Brennstoffe fest.
Diese Europäische Norm gilt für handbeschickte Feuerstätten mit Wärmespeicherung, die Wärme für eine angegebene Zeit abgeben können, nachdem das Feuer erloschen ist. Diese Europäische Norm legt auch die Mindestdauer fest, in der die Feuerstätte die maximale Oberflächentemperatur erreicht und in der die Oberflächentemperatur auf 50 % dieses Maximalwertes abfällt. Diese Feuerstätten beheizen den Aufstellungsraum.
Diese Norm ist nur für solche Speicherfeuerstätten anzuwenden, die entweder als fertig montierte Feuerstätte oder als vom Hersteller bestimmte Einheit, die aus vorgefertigten Komponenten besteht, vor Ort nach den Herstellerangaben aufgestellt wird. Vom Handwerk gefertigte Installationen sind nicht enthalten.
Die Feuerstätten können entsprechend der Bedienungsanleitung des Herstellers entweder feste mineralische Brennstoffe, Torfbriketts, Holzscheite, Holzbriketts oder mehrere dieser Brennstoffe verfeuern. Von Hand zu befüllende Holzpellets können entweder auf den vorhandenen Feuerraumbodenrost der Feuerstätte oder in einer speziellen Vorrichtung, die der Betreiber in den vorhandenen Feuerraum hineinstellt, platziert werden.
Diese Europäische Norm gilt nicht für mechanisch beschickte Feuerstätten, Feuerstätten mit Verbrennungs-luftgebläse oder Feuerstätten mit wasserführenden Bauteilen.

Appareils de chauffage domestique à combustible solide à libération lente de chaleur - Exigences et méthodes d'essai

La présente Norme européenne spécifie les exigences relatives aux instructions de conception, fabrication, construction, sécurité et performance (rendement et émission) et au marquage, ainsi que les méthodes et combustibles d'essai correspondants pour les essais de type des appareils de chauffage domestique à combustible solide à libération lente de chaleur.
La présente Norme européenne s'applique aux appareils de chauffage à libération lente de chaleur à combustion intermittente alimentés manuellement, dont la capacité de stockage thermique leur permet de fournir de la chaleur pendant une durée déclarée après la fin de la combustion. La présente Norme européenne spécifie également une période minimale comprise entre le moment où l'appareil atteint la température de surface différentielle maximale et où la température chute à 50 % de cette valeur maximale. Ces appareils fournissent de la chaleur dans l'espace où ils sont installés.
Ces appareils de chauffage à libération lente de chaleur peuvent être fournis sous la forme d'appareil assemblé ou d'une unité conçue au préalable par le fabricant, constituée d'éléments préfabriqués, destinés à être montés sur le site conformément aux instructions d'assemblage spécifiées par le fabricant. Les installations uniques ne sont pas incluses.
Ces appareils peuvent fonctionner avec des combustibles minéraux solides, des briquettes de tourbe, des bûches de bois naturelles ou manufacturées ; ils peuvent également fonctionner avec plusieurs combustibles conformément aux instructions du fabricant de l'appareil. Des granules de bois, alimentés manuellement, peuvent également être brûlés sur la grille de l'appareil ou sur un dispositif spécial en forme de panier, placé dans le foyer existant par l'utilisateur.
La présente Norme européenne ne s'applique pas aux appareils à alimentation mécanique, aux appareils dont l'air de combustion est assisté par un ventilateur et aux appareils avec bouilleur.

Naprave na trdna goriva, ki počasi oddajajo toploto - Zahteve in preskusne metode

General Information

Status
Published
Publication Date
13-Mar-2007
Current Stage
9093 - Decision to confirm - Review Enquiry

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Slow heat release appliances fired by solid fuel - Requirements and test methodsAppareils de chauffage domestique a combustible solide a libération lente de chaleur - Exigences et méthodes d'essaiSpeicherfeuerstätten für feste Brennstoffe - Anforderungen und PrüfverfahrenTa slovenski standard je istoveten z:EN 15250:2007SIST EN 15250:2007en,fr,de97.100.30Grelniki na trdo gorivoSolid fuel heatersICS:SLOVENSKI

STANDARDSIST EN 15250:200701-september-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15250March 2007ICS 97.100.30 English VersionSlow heat release appliances fired by solid fuel - Requirementsand test methodsAppareils de chauffage domestique à combustible solide àlibération lente de chaleur - Exigences et méthodes d'essaiSpeicherfeuerstätten für feste Brennstoffe - Anforderungenund PrüfverfahrenThis European Standard was approved by CEN on 13 January 2007.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-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 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, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15250:2007: E

EN 15250:2007 (E) 2 Contents Page Foreword.............................................................................................................................................................4 1 Scope......................................................................................................................................................5 2 Normative references............................................................................................................................5 3 Terms and definitions...........................................................................................................................6 4 Materials, design and construction.....................................................................................................9 4.1 Production documentation...................................................................................................................9 4.2 Construction........................................................................................................................................10 4.2.1 General construction...........................................................................................................................10 4.2.2 Cleaning of heating surfaces.............................................................................................................10 4.2.3 Flue spigot or socket...........................................................................................................................10 4.2.4 Flueways...............................................................................................................................................10 4.2.5 Ashpan and ash removal....................................................................................................................11 4.2.6 Bottomgrate.........................................................................................................................................11 4.2.7 Combustion air supply........................................................................................................................11 4.2.8 Control of flue gas...............................................................................................................................11 4.2.9 Firedoors and charging doors...........................................................................................................12 4.2.10 Flue bypass device..............................................................................................................................12 4.2.11 Front firebars and/or deepening plate...............................................................................................12 5 Safety....................................................................................................................................................12 5.1 Temperature rise in the fuel storage container................................................................................12 5.2 Temperature rise of the operating components...............................................................................12 5.3 Temperature of adjacent combustible materials..............................................................................12 5.4 Electrical safety...................................................................................................................................13 6 Performance.........................................................................................................................................13 6.1 Flue gas temperature..........................................................................................................................13 6.2 Carbon monoxide emission...............................................................................................................13 6.3 Efficiency..............................................................................................................................................13 6.4 Flue draught.........................................................................................................................................13 6.5 Refuelling intervals..............................................................................................................................13 6.6 Thermal storage capacity...................................................................................................................13 7 Appliance instructions........................................................................................................................14 7.1 General.................................................................................................................................................14 7.2 Installation instructions......................................................................................................................14 7.3 User operating instructions................................................................................................................15 8 Marking.................................................................................................................................................16 9 Evaluation of conformity....................................................................................................................16 9.1 General.................................................................................................................................................16 9.2 Type testing..........................................................................................................................................17 9.2.1 Initial type testing................................................................................................................................17 9.2.2 Further type testing.............................................................................................................................18 9.3 Factory production control (FPC)......................................................................................................20 9.3.1 General.................................................................................................................................................20 9.3.2 Raw materials and components.........................................................................................................20 9.3.3 Control of inspection, measuring and test equipment....................................................................20 9.3.4 Process control....................................................................................................................................20 9.3.5 Product inspection, testing and evaluation......................................................................................21 9.3.6 Non conforming products..................................................................................................................22 9.3.7 Corrective and preventive action.......................................................................................................22 9.3.8 Handling, storage, packaging, preservation and delivery...............................................................22

EN 15250:2007 (E) 3 Annex A (normative)

Test methods.................................................................................................................23 A.1 Test environment.................................................................................................................................23 A.1.1 Ambient room temperature.................................................................................................................23 A.1.2 Cross-draught......................................................................................................................................23 A.1.3 External sources..................................................................................................................................23 A.2 Test assembly......................................................................................................................................23 A.2.1 General..................................................................................................................................................23 A.2.2 Trihedron..............................................................................................................................................24 A.2.3 Measurement section..........................................................................................................................24 A.2.4 Connection of appliance to measurement section..........................................................................25 A.2.5 Measurement of appliance surface temperature for slow heat release appliances.....................25 A.3 Measurement equipment....................................................................................................................26 A.4 Test procedures...................................................................................................................................27 A.4.1 Appliance installation..........................................................................................................................27 A.4.2 Fuel load...............................................................................................................................................27 A.4.3 Fuelling and de-ashing the fire...........................................................................................................28 A.4.4 Flue gas losses....................................................................................................................................28 A.4.5 Combustible heat losses in the residue............................................................................................28 A.4.6 Burning rate performance test...........................................................................................................28 A.4.7 Temperature safety test for woodburning and multifuel appliances.............................................29 A.5 Test results...........................................................................................................................................30 A.6 Calculation methods...........................................................................................................................31 A.6.1 Notations and units used....................................................................................................................31 A.6.2 Equations..............................................................................................................................................32 A.7 Test report............................................................................................................................................36 Annex B (normative)

Test fuels and recommended fuels............................................................................47 B.1 General..................................................................................................................................................47 B.2 Test fuel................................................................................................................................................47 B.2.1 Selection of test fuel............................................................................................................................47 B.2.2 Storage, preparation and analysis.....................................................................................................47 B.3 Tests for recommended fuels............................................................................................................48 B.3.1 Basis of testing....................................................................................................................................48 B.3.2 Test methods and criteria...................................................................................................................48 Annex C (informative)

Calculation of an approximate heat release curve against time............................54 Annex ZA (informative)

Clauses of this European standard addressing the provisions of the EU Construction Products Directive.......................................................................................................57 ZA.1 Scope and relevant characteristics...................................................................................................57 ZA.2 Procedure for the attestation of conformity of slow heat release appliances fired by solid fuels.......................................................................................................................................................59 ZA.2.1 System of attestation of conformity..................................................................................................59 ZA.2.2 EC Declaration of conformity.............................................................................................................60 ZA.3 CE Marking and labelling....................................................................................................................60 Bibliography......................................................................................................................................................63

EN 15250:2007 (E) 4 Foreword This document (EN 15250:2007) has been prepared by Technical Committee CEN/TC 295 “Residential solid fuel burning appliances”, the secretariat of which is held by BSI. 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 2007, and conflicting national standards shall be withdrawn at the latest by September 2007. 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 informative Annex ZA, which is an integral part 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, 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.

EN 15250:2007 (E) 5 1 Scope This European Standard specifies requirements relating to the design, manufacture, construction, safety and performance (efficiency and emission) instructions and marking together with associated test methods and test fuels for type testing residential slow heat release appliances fired by solid fuel. This European Standard is applicable to hand fuelled intermittent burning slow heat release appliances having thermal storage capacity such that they can provide heat for a declared period of time after the fire has gone out. This European Standard also specifies a minimum time period from the appliance achieving the maximum differential surface temperature and falling to 50 % of that maximum value. These appliances provide heat into the space where they are installed. These slow heat release appliances may be supplied either as an assembled appliance or as a manufacturer’s pre-designed unit consisting of pre-fabricated components designed to be built on site in accordance with the manufacturer’s specified assembly instructions. One off installations are not included. These appliances may burn either solid mineral fuels, peat briquettes, natural or manufactured wood logs or be multi-fuel in accordance with the appliance manufacturer’s instructions. Wood pellets which are hand fuelled may also be burned either on the existing appliance bottomgrate or in a special basket arrangement which is placed by the user into the existing firebox. This European Standard is not applicable to mechanically fed appliances, appliances having fan assisted combustion air or appliances with boiler. 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 50165:1997, Electrical equipment for non-electric appliances for household and similar purposes — Safety requirements 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 501:2003, 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 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 attributes ISO 11722:1999, Hard coal — Determination of moisture in the general analysis test sample by drying in nitrogen

EN 15250:2007 (E) 6 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 air grilles components in the inlet and outlet openings to distribute and direct convection air flow 3.2 air inlet control manual or automatic device which controls the quantity of air supplied for combustion 3.3 appliance family group of appliances of similar construction and/or performance characteristics where it is permissible to test only selected appliances in accordance with the requirements of this standard 3.4 ash content of the fuel solid matter remaining after the complete combustion of solid fuel 3.5 ashpan removable receptacle shaped to receive the residue falling from the firebed 3.6 ashpit enclosed chamber designed to receive the residue or the ashpan 3.7 ashpit loss part of the residue which is combustible 3.8 basic firebed quantity of glowing embers which ensures ignition of the test fuel to be charged NOTE The basic firebed may be specified by the manufacturer. 3.9 batch charge proportion of the test load as declared by the manufacturer that can be added at specified intervals during the test period of the burning rate performance test 3.10 bottomgrate part of the appliance at the base of the firebox which supports the firebed through which the residue falls into the ashpan or ashpit and through which combustion air and/or combustion gases may be drawn 3.11 bottomgrate bars; firebars bars supporting the fuelbed, separate or integral with a surrounding frame 3.12 charging door door which covers the refuelling opening 3.13 combustion air air supplied to the firebox which is entirely or partially used to burn the fuel

EN 15250:2007 (E) 7 3.14 combustion gases compounds in gaseous form produced inside an appliance when fuel is burned 3.15 de-ashing process of clearing a fuelbed and discharging the residue into the collecting receptacle 3.16 de-ashing mechanism device to agitate or disturb the ash to facilitate its removal from the firebed NOTE It may also be used to change the bottomgrate operating position on some appliances. 3.17 draught regulator inlet device for admission of air downstream of the firebed, enabling the flue draught to be controlled 3.18 efficiency ratio of total heat output to the total heat input during the burning period expressed as a percentage 3.19 firebox; combustion chamber part of the appliance in which the fuel is burned 3.20 firebox opening aperture in the firebox through which an appliance may be fuelled 3.21 firedoor door through which the fire may be viewed and which may be opened to allow refuelling of the firebed 3.22 flue by-pass device device which in the open position allows flue gases to pass directly to the flue spigot/socket NOTE This can be used as a preheating aid to overcome chimney condensation. 3.23 flue damper mechanism to change the flow of the combustion gases 3.24 flue draught differential between the static pressure in the place of installation and the static pressure at the flue gas measurement point 3.25 flue gases gaseous compounds leaving the appliance flue spigot or socket and entering the flue gas connector 3.26 flue gas connector duct through which flue gases are conveyed from the flue spigot of the appliance into the chimney flue 3.27 flue gas mass flow mass of flue gas drawn off from the appliance per unit of time

EN 15250:2007 (E) 8 3.28 flue gas temperature temperature of the flue gas at the specified point in the measurement section 3.29 flue spigot; flue socket integral part of the appliance for connecting the flue gas connector thus permitting the deliberate escape of products of combustion into the chimney flue 3.30 flueway part of an appliance designed to convey combustion gases from the firebox to the flue spigot/socket 3.31 front firebars grating or plate fitted at the front of the firebox opening to prevent spillage of fuel and ash or to change the firebox capacity, or both 3.32 integral fuel storage container

enclosed area forming part of the appliance, but not connected directly to the fuel charging area, in which fuel is stored prior to it being physically transferred by the user to the fuel charging

3.33 total heat input
positionquantity of energy which the fuel provides to the appliance during

3.34 operating tool device supplied with the appliance for handling movable and/or hot components 3.35 primary air combustion air which passes through the fuel bed 3.36 recommended fuel fuel of commercial quality, listed in the appliance manufacturer’s instructions, and shown to achieve the claimed performance when tested in accordance with this European Standard 3.37 residue ashes, including combustibles, which collect in the ashpit 3.38 slow heat release appliance intermittent burning appliance having thermal storage capacity to accumulate heat into its mass such that it provides heat for a period of hours, specified by the manufacturer, after the fire has gone out 3.39 solid fuel naturally occurring or manufactured solid mineral fuels, natural or manufactured wood logs and peat briquettes 3.40 solid mineral fuel coal, lignite, coke and fuels derived from these 3.41 space heating output heat output provided as convection and radiation to the room

EN 15250:2007 (E) 9 3.42 test fuel fuel of commercial quality being characteristic of its type to be used for testing appliances 3.43 test load mass of test fuel declared by the manufacturer for the burning rate performance test NOTE The test load can be added as batch charges if the manufacturer indicates this in the appliance instructions. 3.44 total heat output total heat output of the appliance quoted by the manufacturer and achieved under defined test conditions when burning the specified test fuel and is calculated as the total heat input less the flue and unburned carbon losses 3.45 working surfaces all surfaces of an appliance designed to transmit heat to the surrounding atmosphere NOTE All external surfaces of a slow heat release appliance including the flue gas connector in accordance with this European Standard are classified as working surfaces because they are designed to transmit heat into the room in which they are installed. 4 Materials, design and construction 4.1 Production documentation The manufacturer shall state the type of appliance, which he is submitting for test and the appliance shall be tested in accordance with the provisions of this European Standard and with the test methods as defined in Annex A. The parameters and characteristics considered in making the decisions in relation to either the family or range of appliances to be submitted for initial type testing (see 9.2.1) or further type testing where changes are made to an appliance (see 9.2.2) shall be recorded. A copy of the parameters and characteristics considered in making the decisions shall be included in the production documentation for each appliance. To identify the appliance, the manufacturer shall have available documents and/or scaled assembly drawings showing the basic design and construction of the appliance. The documentation and/or the drawings shall include at least the following information:  the specification of the materials used in the construction of the appliance;  the fuel loading mass and if applicable the number and mass of any batch charges;  the time duration to firstly reach maximum mean surface temperature value, to secondly reach 50 % of that maximum value and finally to reach 25 % of that maximum value based upon differential surface temperatures against ambient temperatures;  the total amount of heat energy stored in the appliance during the fuel burning period. For appliances which are supplied as pre-designed units consisting of pre-fabricated components designed to be assembled on site then the manufacturer shall provide detailed assembly instructions for the construction of the appliance together with details of making a gas tight connection between the chimney, the appliance and the flue gas connector and for type testing the appliance shall be constructed and tested in accordance with these instructions.

EN 15250:2007 (E) 10 4.2 Construction 4.2.1 General construction The shape and dimensions of the components and equipment and the method of design and manufacture and if assembled on site the method of assembly and installation, shall ensure that when operated as specified in accordance with the test procedures of this European Standard and exposed to the associated mechanical, chemical and thermal stresses, the appliance shall operate reliably and safely such that during normal operation no combustion gas posing a hazard can escape into the room in which the appliance is installed nor can embers fall out. Non-combustible materials shall be used, except that it shall be permissible to use combustible materials for the following applications:  components or accessories fitted outside the appliance;  internal components of controls and safety equipment;  operating handles;  critical equipment. No part of the appliance shall comprise any material known to be harmful. When fired with solid mineral fuels, the appliance shall have a bottomgrate and an ashpan. Component parts, which require periodic replacement and/or removal shall be either so designed or marked for identification to ensure correct fitting. NOTE 1 Because the entire heat dissipating surfaces of the appliance including the flue spigot/socket and the flue gas connector are working surfaces, there is no requirement for limiting the surface temperature of the appliance. NOTE 2 All operations which the user carries out, including loading and emptying of the appliance, adjusting controls and de-ashing should be easy, safe and effective. 4.2.2 Cleaning of heating surfaces All heating surfaces shall be accessible from the flue gas side for inspection and cleaning with brushes, scrapers or chemical agents by means of sufficient cleani

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