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

This European Standard is applicable to residential freestanding hand fuelled intermittent burning slow heat release appliances having thermal storage capacity such that they can provide heat for an extended period of time after the fire has gone out. 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 as they are not covered by the scope of this standard.
This European standard is also applicable to appliances which are designed for operating under room sealed conditions and which are intended to be installed into a chimney not serving any other appliances.
NOTE: Appliances which receive their combustion air from outside by means of a pipe system which is not air tight are not considered room sealed in accordance with this standard.
This European Standard specifies requirements relating to the design, manufacture, construction, safety and performance (efficiency and emissions) together with associated test methods and test fuels for residential slow heat release appliances fired by solid fuel (hereafter referred to as “appliances”), and provides instructions for them.  Furthermore, it also gives provisions for evaluation of conformity i.e. initial type testing (ITT) and factory production control (FPC) and marking of these appliances.
These appliances provide heat by radiation and/or convection into the space where they are installed.  Additionally if fitted with a boiler or other heat exchanger these appliances may also provide domestic hot water and/or central heating.
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 specifically intended to be hand fuelled only may also be burned either on the existing appliance bottom grate 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. This European standard is also not applicable to appliances which are designed to be operated with ventilating systems which have pressure below (– 15 Pa) in relation to the outside atmosphere as measured in the room where the appliance is installed.
This European Standard covers also the NOx, OGC/total hydrocarbons and particulate matter emission test methods; however it does not contain any limit values for these emissions.

Speicherfeuerstätten für feste Brennstoffe - Anforderungen und Prüfverfahren

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

La présente Norme Européenne s’applique aux appareils de chauffage domestique autonomes à libération lente de
chaleur, à combustion intermittente et alimentation manuelle, dont la capacité de stockage thermique leur permet
de fournir de la chaleur pendant une durée prolongée après la fin de la combustion. 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 du fabricant. Les installations uniques ne sont pas incluses car elles n’entrent pas dans le domaine
d’application de la présente norme.
La présente Norme Européenne s’applique également aux appareils conçus pour fonctionner en conditions
étanches et destinés à être montés sur un conduit de fumée ne desservant aucun autre appareil.
NOTE Les appareils recevant leur air de combustion de l’extérieur au moyen d’un système de tuyauterie qui n’est pas
étanche à l’air ne sont pas considérés comme étanches au sens de la présente norme.
La présente Norme Européenne spécifie les exigences relatives à la conception, la fabrication, la construction, la
sécurité et la performance (rendement et émissions) ainsi que les méthodes et combustibles d’essai
correspondants pour les appareils de chauffage domestique à combustible solide à libération lente de chaleur (ciaprès
dénommés « appareils »), et fournit des instructions les concernant. En outre, elle donne des dispositions
pour l’évaluation de la conformité, c’est-à-dire les essais de type initiaux (ITT), le contrôle de la production en usine
(CPU) et le marquage de ces appareils.
Ces appareils fournissent de la chaleur par rayonnement et/ou convection dans l’espace où ils sont installés. En
outre, s’ils sont équipés d’un bouilleur ou autre échangeur thermique, ces appareils peuvent également fournir de
l’eau chaude à usage domestique et/ou assurer un chauffage central.
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, spécifiquement destinés à
l’alimentation manuelle uniquement, 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. Elle ne s’applique pas
non plus aux appareils conçus pour fonctionner avec des systèmes de ventilation dont la pression est inférieure à
(–15 Pa) par rapport à l’atmosphère extérieure, lorsqu’elle est mesurée dans la pièce où l’appareil est installé.
La présente Norme Européenne couvre également les méthodes d’essai d’émission de NOx, de
COV/hydrocarbures totaux et de particules fines ; toutefois, les valeurs limites pour ces émissions ne sont pas
indiquées.

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

General Information

Status
Not Published
Public Enquiry End Date
30-Dec-2012
Technical Committee
Current Stage
98 - Abandoned project (Adopted Project)
Start Date
12-Jan-2018
Due Date
17-Jan-2018
Completion Date
12-Jan-2018

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SLOVENSKI STANDARD
oSIST prEN 15250:2012
01-november-2012

1DSUDYHQDWUGQDJRULYDNLSRþDVLRGGDMDMRWRSORWR=DKWHYHLQSUHVNXVQHPHWRGH

Slow release appliances fired by solid fuel - Requirements and test methods
Speicherfeuerstätten für feste Brennstoffe - Anforderungen und Prüfverfahren

Appareils de chauffage à combustible solide à libération lente - Exigences et méthodes

d'essai
Ta slovenski standard je istoveten z: prEN 15250 rev
ICS:
97.100.30 Grelniki na trdo gorivo Solid fuel heaters
oSIST prEN 15250:2012 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 15250:2012
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oSIST prEN 15250:2012
EUROPEAN STANDARD
DRAFT
prEN 15250 rev
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2012
ICS 97.100.30 Will supersede EN 15250:2007
English Version
Slow release appliances fired by solid fuel - Requirements and
test methods

Appareils de chauffage à combustible solide à libération Speicherfeuerstätten für feste Brennstoffe - Anforderungen

lente - Exigences et méthodes d'essai und Prüfverfahren

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 295.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which

stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). 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-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to

provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15250 rev:2012: E

worldwide for CEN national Members.
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oSIST prEN 15250:2012
prEN 15250:2012 (E)
Contents Page

Foreword ............................................................................................................................................................. 6

1 Scope ...................................................................................................................................................... 7

2 Normative references ............................................................................................................................ 7

3 Terms and definitions ........................................................................................................................... 8

4 Classification of appliances and system boundary for room sealed appliances ......................... 15

4.1 Classification of appliances ............................................................................................................... 15

4.2 System boundary ................................................................................................................................. 16

5 Materials, design and construction ................................................................................................... 16

5.1 Production documentation ................................................................................................................. 16

5.2 Construction ........................................................................................................................................ 17

5.2.1 General construction........................................................................................................................... 17

5.2.2 Durability .............................................................................................................................................. 18

5.2.3 Cleaning of heating surfaces ............................................................................................................. 20

5.2.4 Flue spigot or socket........................................................................................................................... 20

5.2.5 Flueways ............................................................................................................................................... 20

5.2.6 Ashpan and ash removal .................................................................................................................... 20

5.2.7 Bottomgrate ......................................................................................................................................... 20

5.2.8 Combustion air supply ........................................................................................................................ 21

5.2.9 Control of flue gas ............................................................................................................................... 21

5.2.10 Firedoors and charging doors ........................................................................................................... 21

5.2.11 Flue bypass device .............................................................................................................................. 21

5.2.12 Front firebars and/or deepening plate ............................................................................................... 21

5.2.13 Integral boiler ....................................................................................................................................... 22

5.2.14 Boilers constructed of cast iron ........................................................................................................ 24

5.2.15 Water side connections ...................................................................................................................... 25

5.2.16 Heat exchangers that are not directly in contact with fire or flue gases ....................................... 27

5.2.17 Room sealed appliances ..................................................................................................................... 27

6 Safety .................................................................................................................................................... 27

6.1 Temperature rise in the fuel storage container ................................................................................ 27

6.2 Temperature rise of the operating components ............................................................................... 27

6.3 Temperature of adjacent combustible materials .............................................................................. 27

6.4 Maximum flue gas temperature during safety test (proposal) ........................................................ 27

6.5 Safety test of ducted air appliances .................................................................................................. 28

6.6 Electrical safety ................................................................................................................................... 28

6.7 Safety devices for appliances fitted with a boiler ............................................................................ 28

6.7.1 Appliances intended for open systems............................................................................................. 28

6.7.2 Appliances intended for sealed systems .......................................................................................... 28

6.8 Safety devices for appliances fitted with a heat exchangers that are not directly in contact

with fire ................................................................................................................................................. 28

7 Performance ......................................................................................................................................... 28

7.1 Flue gas temperature .......................................................................................................................... 28

7.2 Carbon monoxide emission ............................................................................................................... 28

7.3 Hydrocarbon and NO emissions ...................................................................................................... 29

7.4 Particulate emissions .......................................................................................................................... 29

7.5 Efficiency .............................................................................................................................................. 29

7.6 Flue draught ......................................................................................................................................... 29

7.7 Refuelling intervals.............................................................................................................................. 29

7.8 Thermal storage capacity ................................................................................................................... 29

8 Appliance instructions ........................................................................................................................ 30

8.1 General ................................................................................................................................................. 30

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oSIST prEN 15250:2012
prEN 15250:2012 (E)

8.2 Installation instructions ...................................................................................................................... 30

8.3 User operating instructions ................................................................................................................ 31

9 Marking ................................................................................................................................................. 32

10 Evaluation of conformity ..................................................................................................................... 33

10.1 General .................................................................................................................................................. 33

10.2 Type testing .......................................................................................................................................... 34

10.2.1 Initial type testing ................................................................................................................................ 34

10.2.2 Further type testing ............................................................................................................................. 35

10.3 Factory production control (FPC) ...................................................................................................... 37

10.3.1 General .................................................................................................................................................. 37

10.3.2 Raw materials and components ......................................................................................................... 37

10.3.3 Control of inspection, measuring and test equipment .................................................................... 37

10.3.4 Process control .................................................................................................................................... 37

10.3.5 Product inspection, testing and evaluation ...................................................................................... 38

10.3.6 Non-conforming products .................................................................................................................. 39

10.3.7 Corrective and preventive action ....................................................................................................... 39

10.3.8 Handling, storage, packaging, preservation and delivery ............................................................... 39

10.3.9 Additional requirements for the production control of roomsealed appliances .......................... 39

Annex A (normative) Test methods.................................................................................................................. 41

A.1 Test environment ................................................................................................................................. 41

A.1.1 Ambient room temperature ................................................................................................................. 41

A.1.2 Cross-draught ...................................................................................................................................... 41

A.1.3 External sources .................................................................................................................................. 41

A.2 Test assembly ...................................................................................................................................... 41

A.2.1 General .................................................................................................................................................. 41

A.2.2 Trihedron .............................................................................................................................................. 42

A.2.3 Measurement section .......................................................................................................................... 42

A.2.4 Connection of appliance to measurement section .......................................................................... 43

A.2.5 Measurement of appliance surface temperature for slow heat release appliances ..................... 43

A.3 Set up for measuring water heating output ...................................................................................... 44

A.4 Measuring of ducted air heat output ................................................................................................. 45

A.5 Measuring of nominal heat output ..................................................................................................... 45

A.6 Safety tests of roomsealed slow heat release appliance ................................................................ 45

A.6.1 General .................................................................................................................................................. 45

A.6.2 Appliance leak tightness tests ........................................................................................................... 45

A.7 Measurement equipment .................................................................................................................... 48

A.8 Test procedures ................................................................................................................................... 48

A.8.1 Appliance installation .......................................................................................................................... 48

A.8.2 Fuel load ............................................................................................................................................... 49

A.8.3 Fuelling and de-ashing the fire........................................................................................................... 49

A.8.4 Flue gas losses .................................................................................................................................... 49

A.8.5 Combustible heat losses in the residue ............................................................................................ 50

A.8.6 Burning rate performance test ........................................................................................................... 50

A.8.7 Temperature safety test for woodburning and multifuel appliances ............................................. 51

A.9 Test results ........................................................................................................................................... 51

A.10 Calculation methods ........................................................................................................................... 52

A.10.1 Notations and units used .................................................................................................................... 52

A.10.2 Equations.............................................................................................................................................. 54

A.11 Test report ............................................................................................................................................ 58

Annex B (normative) Test fuels and recommended fuels ............................................................................. 70

B.1 General .................................................................................................................................................. 70

B.2 Test fuel ................................................................................................................................................ 70

B.2.1 Selection of test fuel ............................................................................................................................ 70

B.2.2 Storage, preparation and analysis ..................................................................................................... 70

B.3 Tests for recommended fuels ............................................................................................................ 71

B.3.1 Basis of testing .................................................................................................................................... 71

B.3.2 Test methods and criteria ................................................................................................................... 71

Annex C (informative) Calculation of an approximate heat release curve against time ............................. 77

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oSIST prEN 15250:2012
prEN 15250:2012 (E)

Annex D (informative) Calculation of flue gas temperatures on basis of DIN 4705, EN 13384-1 and

EN 15287 ............................................................................................................................................... 80

Annex E (normative) Possibilities of installation for roomsealed appliances ............................................. 83

Annex F (informative) Example of a suitable arrangement for measuring the leakage rate of a

roomsealed appliance ......................................................................................................................... 85

Annex G (normative) Measuring procedure for nitrogen oxides (NOx) ....................................................... 86

G.1 General procedure ............................................................................................................................... 86

G.2 Measuring principles of analysers ..................................................................................................... 87

G.2.1 Chemiluminescence method .............................................................................................................. 87

G.2.2 Non-dispersive infrared (NDIR) method ............................................................................................ 88

G.2.3 Other methods ..................................................................................................................................... 89

G.3 Calculation method ............................................................................................................................. 89

Annex H (normative) Measuring procedure for THC ...................................................................................... 90

H.1 General procedure ............................................................................................................................... 90

H.2 Equipment ............................................................................................................................................ 90

H.3 Calculation of THC ............................................................................................................................... 90

Annex I (normative) Measuring procedures for particulate matter (PM) ...................................................... 92

I.1 Principle ................................................................................................................................................ 92

I.2.1 Test set-up ........................................................................................................................................... 92

I.2.1.1  Sampling train ...................................................................................................................................... 92

I.2.2 Instrumentation ................................................................................................................................... 94

I.2.2.1 Ambient temperature measurement system ................................................................................... 94

I.2.2.2 Ambient air pressure measurement system .................................................................................... 94

I.2.2.3 Micro balance ...................................................................................................................................... 94

I.2.3 Test procedure .................................................................................................................................... 94

I.2.3.1 Preparation .......................................................................................................................................... 94

I.2.3.6 Analysis ............................................................................................................................................... 95

I.2.3.7 Overall blank sample .......................................................................................................................... 95

I.2.4 Calculations ....................................................................................................................................... 95

I.3.1 General ................................................................................................................................................ 96

I.3.2  Principle ................................................................................................................................................ 97

I.3.3 Apparatus ............................................................................................................................................ 97

I.3.3.1 Dilution tunnel ..................................................................................................................................... 97

I.3.4 Particulate emission sampling train ................................................................................................ 101

I.3.5 Dilution ratio measurement .............................................................................................................. 103

I.3.6 Reagents ............................................................................................................................................. 103

I.3.7 Instrumentation .................................................................................................................................. 104

I.3.8 Test procedure ................................................................................................................................... 104

I.3.8.1 Preparation of dilution tunnel .......................................................................................................... 104

I.3.8.2 Preparation of emission sampling train ......................................................................................... 104

I.3.8.3 Measurement ..................................................................................................................................... 105

I.3.8.3.1 Test cycle ................................................................................................................................... 105

I.3.8.3.2 Determination of sample particulate masses ........................................................................ 105

I.3.9 Calculations ....................................................................................................................................... 106

I.3.9.1 Volume of gas sampled in the emission sampling train .............................................................. 106

I.3.9.1.1 Volume of gas sampled ............................................................................................................ 106

I.3.9.1.2 Moisture content of gas sampled ............................................................................................ 106

I.3.9.2 Volume of gas in the dilution tunnel............................................................................................... 107

I.3.9.2.1 Volume of gas with water vapour ............................................................................................ 107

I.3.9.2.2 Volume of gas dry ..................................................................................................................... 107

I.3.9.2.3 Volume of gas dry at standard condition ................................................................................ 107

I.3.9.3 Portion of dilution tunnel to sampling train gas volume .............................................................. 108

I.3.9.4 Total particulate mass sampled ...................................................................................................... 108

I.3.9.5 Total particulate mass emitted ........................................................................................................ 108

I.3.9.6 Dilution ratio ...................................................................................................................................... 109

I.3.9.7 Particulate emission concentration ................................................................................................. 109

I.3.9.8 Solid particle fraction at 13% O ..................................................................................................... 110

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oSIST prEN 15250:2012
prEN 15250:2012 (E)

Annex ZA (informative) Clauses of this European standard addressing the provisions of the EU

Construction Products Directive ..................................................................................................... 111

ZA.1 Scope and relevant characteristics ................................................................................................. 111

ZA.2 Procedure for the attestation of conformity of slow heat release appliances fired by solid

fuels ..................................................................................................................................................... 113

ZA.2.1 System of attestation of conformity ................................................................................................ 113

ZA.2.2 EC Declaration of conformity ........................................................................................................... 114

ZA.3 CE Marking and labelling ................................................................................................................. 114

Bibliography .................................................................................................................................................... 120

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oSIST prEN 15250:2012
prEN 15250:2012 (E)
Foreword

This document (prEN 15250:2012) has been prepared by Technical Committee CEN/TC 295 “Residential solid

fuel burning appliances”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15250:2007.

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).

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