kSIST FprEN 16510-2-6:2022

Residential solid fuel burning appliances - Part 2-6: Mechanically by wood pellets fed roomheaters, inset appliances and cookers

This part 2-6 of a European Standard series shall be applicable to space heaters, inset appliances and cookers fired by wood pellets, mechanically fed up to 50 kW nominal heat output. These appliances typically use auxiliary energy which is measured in this standard as well.
For inset pellet appliances and especially their testing, additional information is necessary from prEN 16510 2 2.
For pellet cookers and especially their testing, additional information is necessary from prEN 16510 2 3.
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 prEN 16510 2 1 to prEN 16510 2 5.
NOTE   These appliances may have an integral fuel hopper or be combined with an external fuel hopper.
This European Standard should be used in conjunction with prEN 16510-1.
The appliances covered by this part 2-6 provide heat into the space where they are installed. They may be operated with either natural draught or fan-assisted combustion air. Where fitted with a boiler, they can also provide domestic hot water and/or central heating. These appliances burn wood pellets only, in accordance with the appliance manufacturer's instructions. They only operate with the firedoors closed.
NOTE   A fan-assisted appliance does still operate under negative pressure in the flue gas system.
This European Standard specifies requirements relating to the design, manufacture, construction, safety and performance (efficiency and emissions), instructions and marking together with associated test methods and test fuels.
This European Standard shall not applicable to appliances:
—   with boiler intended for water systems having water temperatures above 110°C and 3 bar; and
—   with boiler intendend for water systems having direct contact with sanitary hot water;
—   intended to be used with a pure horizontal exhaust (through the building wall);
—   with flue gas condensation in the appliance;
—   switching on / off for part load operation.

Häusliche Feuerstätten für feste Brennstoffe - Teil 2-6: Mechanisch mit Holzpellets beschickte Raumheizer, Einsätze und Herde

Dieses Dokument ist anwendbar auf mechanisch mit Holzpellets beschickte Raumheizer, Einsätze und Herde mit einer Nennwärmeleistung bis 50 kW.
Der Verwendungszweck der Geräte ist Raumheizung in Wohngebäuden und kann das Kochen sein. Sie können mit wasserführenden Bauteilen (als feste Bestandteile des Gerätes mit zu erhitzendem Wasser) zur Warmwasserbereitung der Zentralheizung ausgestattet sein.
Diese Geräte verwenden typischerweise Hilfsenergie, die ebenfalls in diesem Dokument bestimmt wird. Sie können mit natürlichem Förderdruck oder mit Gebläse unterstützter Verbrennungsluftzufuhr betrieben werden.
Diese Geräte verfeuern nur entsprechend spezifizierte Holzpellets. Sie werden nur mit geschlossenen Feuerraumtüren betrieben.
ANMERKUNG    Eine Gebläse unterstützte Feuerstätte arbeitet bei Unterdruck im Abgassystem.
Dieses Dokument ist nicht anzuwenden für Geräte:
-   mit wasserführenden Bauteilen vorgesehen für Wassersysteme mit einer Wassertemperatur über 110 °C und 3 bar;
-   mit wasserführenden Bauteilen vorgesehen für Wassersysteme mit direktem Kontakt zu Brauchwarmwasser;
-   vorgesehen für den Betrieb mit direkter horizontaler Abgasführung (durch die Gebäudewand);
-   mit Abgaskondensation in der Feuerstätte;
-   an- und ausschaltendem Teillast-Betrieb.
Dieses Dokument legt das Verfahren für die Bewertung und Überprüfung der Leistungsbeständigkeit (AVCP) der Eigenschaften von Raumheizern für feste Brennstoffe fest.

Équipement de chauffage domestique - Partie 2-6 : Poêles, inserts et cuisinières à granulés de bois et à alimentation mécanique

Le présent document s'applique aux poêles, inserts et cuisinières à granulés de bois et à alimentation mécanique, de puissance utile nominale inférieure ou égale à 50 kW.
L'usage prévu des appareils est le chauffage des locaux dans les bâtiments résidentiels et éventuellement la cuisson. Ils peuvent être équipés d'un bouilleur (faisant partie intégrante de l'appareil et contenant de l'eau à chauffer) pour fournir de l’eau chaude aux systèmes de chauffage central.
Ces appareils utilisent généralement de l’énergie auxiliaire, qui est également mesurée dans le présent document. Ils peuvent fonctionner en tirage naturel ou être équipés d’un ventilateur pour l’alimentation en air de combustion.
Ces appareils utilisent uniquement des granulés de bois spécifiés. Ils ne fonctionnent qu’avec les portes foyères fermées.
NOTE   Un appareil équipé d’un ventilateur fonctionne toujours avec un conduit de fumées soumis à une pression négative.
Le présent document ne s’applique pas aux appareils :
-   à bouilleur prévu pour les circuits d’eau dont la température d’eau est supérieure à 110 °C 3 bar ;
-   à bouilleur prévu pour les circuits d’eau en contact direct avec de l’eau chaude sanitaire ;
-   prévus pour une utilisation avec une évacuation purement horizontale (directement à travers le mur du bâtiment) ;
-   à condensation des fumées dans l’appareil ;
-   à commutation marche/arrêt pour un fonctionnement à charge partielle.
Le présent document spécifie des modes opératoires pour l'évaluation et la vérification de la constance des performances (EVCP) des caractéristiques des poêles, inserts et cuisinières à granulés de bois et à alimentation mécanique.

Grelne naprave na trdna goriva za stanovanjske stavbe - 2-6. del: Grelniki prostorov, kaminski vložki in štedilniki z mehanskim dodajanjem lesnih peletov

General Information

• Status: Not Published
• Public Enquiry End Date: 04-May-2021
• ICS: 97.100.30 - Solid fuel heaters
• Technical Committee: OGS - Heating for buildings
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 04-Aug-2022
• Due Date: 22-Sep-2022
• Directive: 2009/125/EC - Directive 2005/32/EC of the European Parliament and of the Council of 6 July 2005 establishing a framework for the setting of ecodesign requirements for energy-using products and amending Council Directive 92/42/EEC and Directives 96/57/EC and 2000/55/EC of the European Parliament and of the Council
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/129 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on space heating appliances
• Ref Project: FprEN 16510-2-6 - Residential solid fuel burning appliances - Part 2-6: Mechanically by wood pellets fed roomheaters, inset appliances and cookers

RELATIONS

• Revised: SIST EN 13240:2003/AC:2006 - Roomheaters fired by solid fuel - Requirements and test methods
• Effective Date: 17-Feb-2021
• Revised: SIST EN 13240:2003/A2:2005/AC:2008 - Roomheaters fired by solid fuel - Requirements and test methods
• Effective Date: 17-Feb-2021
• Revised: SIST EN 13240:2003/A2:2005 - Roomheaters fired by solid fuel - Requirements and test methods
• Effective Date: 17-Feb-2021
• Revised: SIST EN 13240:2003 - Room heaters fired by solid fuel - Requirements and test methods
• Effective Date: 17-Feb-2021
• Revised: SIST EN 14785:2006 - Residential space heating appliances fired by wood pellets - Requirements and test methods
• Effective Date: 23-Feb-2022

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 16510-2-6:2021
01-april-2021
Stanovanjske grelne naprave na trdna goriva - 2-6. del: Grelniki prostorov,
kaminski vložki in štedilniki z mehanskim dodajanjem lesnih peletov

Residential solid fuel burning appliances - Part 2-6: Mechanically by wood pellets fed

roomheaters, inset appliances and cookers

Häusliche Feuerstätten für feste Brennstoffe - Teil 2-6: Mechanisch mit Holzpellets

beschickte Raumheizer, Einsätze und Herde

Équipement de chauffage domestique - Partie 2-6 : Poêles, inserts et cuisinières à

granulés de bois et à alimentation mécanique
Ta slovenski standard je istoveten z: prEN 16510-2-6
ICS:
97.100.30 Grelniki na trdo gorivo Solid fuel heaters
oSIST prEN 16510-2-6:2021 en,fr,de

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

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oSIST prEN 16510-2-6:2021
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oSIST prEN 16510-2-6:2021
DRAFT
EUROPEAN STANDARD
prEN 16510-2-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 97.100.30
English Version
Residential solid fuel burning appliances - Part 2-6:
Mechanically by wood pellets fed roomheaters, inset
appliances and cookers

Équipement de chauffage domestique - Partie 2-6 : Häusliche Feuerstätten für feste Brennstoffe - Teil 2-6:

Poêles, inserts et cuisinières à granulés de bois et à Mechanisch mit Holzpellets beschickte Raumheizer,

alimentation mécanique Einsätze und Herde

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16510-2-6:2021 E

worldwide for CEN national Members.
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oSIST prEN 16510-2-6:2021
Contents Page

European foreword ............................................................................................................................................. 4

1 Scope .......................................................................................................................................................... 5

2 Normative references .......................................................................................................................... 5

3 Terms and definitions ......................................................................................................................... 6

4 Descriptive features ............................................................................................................................. 6

5 Appliances Performance requirements in relation to safety ..............................................10

6 Appliances Performance requirements in relation to the appliance operation ..........12

7 Appliance instructions ......................................................................................................................14

8 Sustainable use of natural resources ...........................................................................................15

9 Assessment and verification of constancy of performance - AVCP ...................................15

10 Marking and technical datasheet ..................................................................................................15

Annex A (normative) Test methods ...........................................................................................................16

A.1 Test environment ................................................................................................................................16

A.2 Test assembly .......................................................................................................................................16

A.3 Measurement equipment .................................................................................................................16

A.4 Test procedures ...................................................................................................................................16

A.5 Test results ............................................................................................................................................22

A.6 Calculation methods ...........................................................................................................................22

A.7 Test report .............................................................................................................................................22

Annex B (normative) Test fuels and recommended fuels .................................................................23

Annex C (informative) Arrangement for measuring the leakage rate ..........................................24

Annex D (normative) Measuring procedure for nitrogen oxides (NOx) ......................................25

Annex E (normative) Measuring procedure for organic gaseous compounds OGC .................26

Annex F (normative) Measuring procedure for particulate matter (PM) ....................................27

Annex G (informative) Guideline for the characteristics to be taken into account in order to

decide on families of appliances ....................................................................................................28

Annex H (informative) Deviation of measuring results as a basis for market surveillance

measurements ......................................................................................................................................29

Annex I (informative) Standing air loss ...................................................................................................30

Annex J (informative) A-deviation .............................................................................................................31

Annex K (normative) Energy label .............................................................................................................32

Annex FA (informative) Guide to carry out a risk assessment ........................................................33

Annex FB (normative) Measurement positions for conveyor systems .........................................36

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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)

Annex FC (normative) Browning chart for oven heating test .......................................................... 40

Annex ZA (informative) Relationship of this European Standard with Regulation (EU) No.

305/2011 ............................................................................................................................................... 41

ZA.1 Scope and relevant characteristics .............................................................................................. 41

ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) ............ 44

ZA.3 Assignment of AVCP tasks ............................................................................................................... 44

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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)
European foreword

This document (prEN 16510-2-6:2021) 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 together with EN 16510-1:2021 and EN 16510-2-1 will supersede EN 13240:2001 as

amended and corrected.

This document has been prepared under a standardization request given to CEN/CENELEC by the

European Commission and the European Free Trade Association.

For relationship with (EU) Regulation 305/2011, see informative Annex ZA, which is an integral part of

this document.

The structure of EN 16510, residential solid fuel burning appliances, is as follows:

— Part 1, General requirements and test methods
— Part 2-1, Roomheaters
— Part 2-2, Inset appliances including open fires
— Part 2-3, Cookers
— Part 2-4, Independent boilers of a nominal heat output up to 50 kW
— Part 2-5, Slow heat release appliances

— Part 2-6, Mechanically by wood pellets fed roomheaters, inset appliances and cookers

Other sections of Part 2 will be added to cover residential solid fuel burning appliances not included in

parts 2-1 to 2-6.

This Part 2-6 supplements or modifies the corresponding clauses in prEN 16510-1:2021,

prEN 16510-2-2:2021 for inset pellet appliances and partially prEN 16510-2-3:2021 for cooking

requirements and tests, so as to convert that publication into the European Standard: Residential solid

fuel burning appliances – Mechanically by wood pellets – fed roomheaters, inset appliances and cookers –

Requirements and test methods.

This document is expected to be used in conjunction with prEN 16510-1:2021, prEN 16510-2-2:2021 and

partially prEN 16510-2-3:2021. This document refers to Clauses of prEN 16510-1:2021 or adapts Clauses

by stating “with the following modification”, “with the following addition”, “is replaced by the following”

or “shall not” applicable” in the corresponding Clause. This document adds Clauses or Subclauses to the

structure of prEN 16510-1:2021 which are particular to this document.

Subclauses and Figures which are additional to those in prEN 16510-1:2021 are numbered starting with

601. Annexes which are additional to those in prEN 16510-1:2021 are numbered starting with FA.

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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)
1 Scope

This document is applicable to space heaters, inset appliances and cookers fired by wood pellets,

mechanically fed up to 50 kW nominal heat output. These appliances typically use auxiliary energy which

is measured in this document as well.

For inset pellet appliances and especially their testing, additional information from

prEN 16510-2-2:2021 is relevant.

For pellet cookers and especially their testing, additional information from prEN 16510-2-3:2021 is

relevant.

Non-mechanically fed appliances burning solid mineral fuels, peat briquettes and natural or

manufactured wood logs are not included in this document, but are covered by prEN 16510-2-1:2021 to

prEN 16510-2-5:2021.

NOTE 1 These appliances could have an integral fuel hopper or be combined with an external fuel hopper.

This document is used in conjunction with prEN 16510-1:2021.

The appliances covered by this document provide heat into the space where they are installed. They can

be operated with either natural draught or fan-assisted combustion air. Where fitted with a boiler, they

can also provide domestic hot water and/or central heating. These appliances burn wood pellets only, in

accordance with the appliance manufacturer's instructions. They only operate with the firedoors closed.

NOTE 2 A fan-assisted appliance does still operate under negative pressure in the flue gas system.

This document specifies requirements relating to the design, manufacture, construction, safety and

performance (efficiency and emissions), instructions and marking together with associated test methods

and test fuels.
This document is not applicable to appliances:

— with boiler intended for water systems having water temperatures above 110°C and 3 bar;

— with boiler intended for water systems having direct contact with sanitary hot water;

— intended to be used with a pure horizontal exhaust (through the building wall);

— with flue gas condensation in the appliance;
— switching on / off for part load operation.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 15456, Heating boilers - Electrical power consumption for heat generators - System boundaries -

Measurements

prEN 16510-1:2021, Residential solid fuel burning appliances - Part 1: General requirements and test

methods

prEN 16510-2-2:2021, Residential solid fuel burning appliances - Part 2-2: Inset appliances including open

fires

prEN 16510-2-3:2021 Residential solid fuel burning appliances - Part 2-3: Cookers

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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in prEN 16510-1:2021 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.601
heat output control device
device to control the heat output of the appliance
3.602
ignition system
device used to ignite the fuel in the retort of the combustion chamber

Note 1 to entry: Ignition could be performed manually, automatically and by using, for example, a hot air blower,

an electrical resistor or an electrical resistance for ignition.
3.603
standby operation

operation mode without heat demand, in which the system is launched immediately in the required mode

as soon as the heat demand is required
3.604
back burning

state in which the fuel ignites in the direction of the supply fuel line and where combustion spreads to

the fuel tank or hopper integrated
Note 1 to entry: Back burning could be caused by three key factors:
a) fuel ignition in the direction of the supply fuel line or hopper integrated;

b) propagation and ignition of hot flammable gas in the fuel supply line or the integrated hopper;

c) thermal conduction to the fuel supply line or the integrated hopper.
3.605
safety device against back burning
device to prevent back burning, including extinguishing systems
3.606
safety shutdown

process by which the fuel supply and / or the combustion air supply is stopped immediately as a response

of a safety device or the detection of a fault in a safety device
4 Descriptive features

prEN 16510-1:2021, prEN 16510-2-2:2021 and prEN 16510-2-3:2021, Clause 4, shall be applicable as

necessary with the following modification.
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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)
4.1 Designation of appliances
prEN 16510-1:2021, 4.1, shall be applicable with the following modification.
Replace Table 1 by the following:
Table 1 — Types of appliances
Type Room- Leakage Combustion Door closure Tightness requirement
declaration air supply
Sealed
connection
Type B - No No specific No specific No specific requirement
requirement requirement
Type BE - No Yes No specific Appliance intended to be
requirement supplied with combustion air
via a combustion air duct. No
specific requirements for
tightness
Type BF - Yes Yes No specific The leakage is tested in
requirement accordance with 5.9 on delivery
only.
A leakage is measured and
given in the instructions, no
further requirement on the
tightness.
Type CA Yes Yes Yes Mechanism to In accordance with 5.9 after
close the doors closing the door without further
automatically action of the user, tested at
10 Pa
Type Yes Yes Yes Manually closed In accordance with 5.9 after
CM and locked door closing the door, tested at 10 Pa
Type CC Yes Yes Yes Manually closed In accordance with 5.9 after
and locked door closing the door, tested at 10 Pa
controlled by an
alarm or fail safe
system
Type Yes Yes Yes Manually closed In accordance with 5.9 after
CM50 and locked door closing the door, tested at 50 Pa
Type Yes Yes Yes Manually closed In accordance with 5.9 after
CC50 and locked door closing the door, tested at 50 Pa
controlled by an
alarm or fail safe
system
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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)
Type Room- Leakage Combustion Door closure Tightness requirement
declaration air supply
Sealed
connection
Type Yes Yes Yes Appliance with In accordance with 5.9 after
CC50+ overpressure in closing the door, tested at 50 Pa
combustion
chamber
Manually closed
and locked door
controlled by an
alarm or fail safe
system
4.4 Construction and materials
prEN 16510-1:2021, 4.4, shall be applicable with the following modification(s).
Add the following new clauses in 4.4
4.4.601 Retort

Where the retort is removable it shall be designed or marked to ensure correct assembly. If a de-ashing

mechanism is fitted it shall be capable of de-ashing the fuel bed in the area of the retort.

The preferred design should allow de-ashing to be carried out with the ashpit door closed. The de-ashing

operation should be possible without undue effort. If it is necessary to remove the ashpit door to de-ash

the fire, the appliance should be designed such that there is no undue spillage of ash or fuel from the

appliance during the de-ashing operation.
4.4.602 Heat output control device
The device shall be easily accessible and shall be permanently marked.
Their position in relation to their function shall be clearly recognizable.
4.4.5 Flueways

prEN 16510-1:2021, 4.4.5, shall be applicable with the following modification(s).

When an automatic cleaning system is installed, it shall clean the appliance’s flueways such that there is

no risk of blockage within the flueways due to build-up of soot.
4.4.6 Components built-in the flue ways
prEN 16510-1:2021, 4.4.6. shall not be applicable.
4.4.7 Ashpan and ash removal

prEN 16510-1:2021, 4.4.7, shall be applicable with the following modification(s).

A means of removing the residue from the appliance shall be provided.

Where an ashpan is provided, for appliances with internal hoppers, it shall be capable of containing the

residue from two full charges of fuel in the hopper whilst retaining sufficient space above to allow

adequate primary air flow through the bottom grate or fire bed.

For appliances with external hoppers, the size of ashpan shall be able to contain at least the ash from 12

h appliance running time at nominal heat output. If the manufacturer states a value for the possible

running time greater than 12 h, it has to be verified by calculation if the value is correct.

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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)

If the ashpan resides in the appliance it shall be located in the ashpit in such a way that it allows the free

passage of primary air and in such a position that does not obstruct any primary inlet control.

4.4.8 Bottomgrate
prEN 16510-1:2021, 4.4.8 shall not be applicable.
4.4.9 Combustion air supply
prEN 16510-1:2021, 4.4.9 shall not be applicable.
4.4.9.1 Primary combustion air control device

prEN 16510-1:2021, 4.4.9.1, shall be applicable with the following modification(s).

The appliance shall be fitted with either a thermostatically, electronically controlled primary air inlet

control or a manual primary air inlet control. The adjusting control shall be clearly visible or permanently

marked so that its operation is readily understandable. Where an appliance is designed for various sized

pellets use a means shall be provided for the user to identify the correct set position of the primary air

inlet control for each fuel size, if any.

Appliances fitted with a boiler shall be fitted with a water temperature actuated, thermostatically

controlled fuel and air supply.
4.4.10 Damper

prEN 16510-1:2021, 4.4.10, shall be applicable with the following modification(s).

Add the following paragraph as last paragraph in 4.4.10

The installation instructions shall give information on a possible installation of a damper in the flue gas

ways.

If a flue damper is mounted or not forbidden in the installation instructions, it shall be ensured that the

fan assistance does not lead to overpressure in the flue gas outlet even in case of closure of the damper.

A flue damper shall not be fitted to an appliance having a forced fan air supply and its mounting shall as

well be forbidden in the installation instructions
4.4.11 Charging doors and ash-pit doors
prEN 16510-1:2021, 4.4.11 shall not be applicable.
4.4.14 Front firebars
prEN 16510-1:2021, 4.4.14 shall not be applicable.
4.4.15 Fossil solid fuel and peat briquettes burning appliances
prEN 16510-1:2021, 4.4.15 shall not be applicable.
4.6 Ability of the appliance to carry a chimney
prEN 16510-1:2021, 4.6, shall be applicable with the following modification(s).
Add the following:

Appliances with an upper outlet may be able to carry the load of the connecting flue pipes. The

manufacturer shall clearly state the max. load the appliance may carry in the appliance installation

instructions.
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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)
4.601 Additional requirements for cookers
prEN 16510-2-3:2021, 5.301 shall be applicable without 5.301.4.
5 Appliances Performance requirements in relation to safety

prEN 16510-1:2021, prEN 16510-2-2:2021 and prEN 16510-2-3:2021, Clause 5 shall be applicable as

necessary with the following modifications.
5.2 Open operation of an appliance
prEN 16510-1:2021, 5.2 shall not be applicable.
5.4 Temperature rise in the fuel storage (other than the fuel hopper)
prEN 16510-1:2021, 5.4 shall not be applicable.
5.5 Temperature rise of the operating components
prEN 16510-1:2021, 5.5 shall be applicable with the following modification(s).
Add the following 2nd note and rename the first note "NOTE 1":

NOTE 2 The operating components are defined by the manufacturer in the user operating instructions.

5.9 Safety requirements of roomsealed appliances
5.9.1 Tightness related to CO-emission

prEN 16510-1:2021, 5.9.1, shall be applicable with the following modification(s).

Replace 5.9.1 by the following:

For appliances of type CA, CM and CC (see Table 1) the test according to A.4.11.2.2 is carried out at an

overpressure of 10 Pa.

For appliances of type CA, CM and CC (see Table 1) the following requirements shall be met.

The mean value of CO concentration as measured in the combustion products of the appliance, given in

ppm is measured during the test at nominal heat output according to A.4.7 and at part load heat output

according to A.4.8 (combustion air control devices are set at the settings specified by the manufacturer).

The product of the CO concentration in the flue gas [ppm] (at 13 % O ) and the leakage of the appliance

[Nm /h] determined according to A.4.11.2.2, A.4.11.2.3 and A.4.11.2.4 shall not exceed the value of 2 400

[ppm Nm /h] at nominal heat output and at part load heat output (if specified by the manufacturer).

5.9.2 Overall tightness
prEN 16510-1:2021, 5.9.2, shall be applicable with following modification.
After 5.9.2 add the following subclause.
5.9.601 Tightness of type CM 50, CC 50 and CC 50+ (see Table 1)

For appliances of type CM50, CC50 and CC50+ (see Table 1) the test according to A.4.11.2.2 is carried out

at an overpressure of 50 Pa.

For appliances of type CM50, CC50 and CC50+ (see Table 1) the following requirements shall be met.

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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)

The mean value of CO concentration as measured in the combustion products of the appliance, given in

ppm is measured during the test at nominal heat output according to A.4.7 and at part load heat output

according to A.4.8 (combustion air control devices are set at the settings specified by the manufacturer).

The product of the CO concentration in the flue gas [ppm] (at 13 % O ) and the leakage of the appliance

[Nm3/h] determined according to A.4.11.2.2, A.4.11.2.3 and A.4.11.2.4 shall not exceed the value of 2 400

[ppm Nm /h] at nominal heat output and at part load heat output (if specified by the manufacturer).

For CC50+ appliances the leakage shall not exceed 1 Nm /h.
Add the following new subclauses:
5.601 Safety test for spillage of combustion gas and discharge of embers

When operated under the test conditions described in A.4.7 to A.4.9 there shall not be any potentially

harmful spillage of flue gases from the appliance into the room and embers shall not fall out.

5.602 Temperature in the fuel hopper

When tested during the temperature safety test in accordance with A.4.10.3 the temperature in any fuel

hopper shall not exceed the ambient temperature by more than 65 K at normal use and 85 K at abnormal

circumstances (see Annex FA).
For necessary measuring points see Annex FB.
5.603 Safety against back burning through the fuel conveyor system

The appliance shall have a safety system to ensure that the fuel shall not burn back from the retort to the

fuel hopper. Operation of any of the safety systems shall stop the fuel supply (refer to Annex FB for

examples).
5.604 Risk assessment of the appliance fired by wood pellets

A risk assessment of the appliance fired by wood pellets shall be performed by the manufacturer.

EN ISO 12100, ISO/TR 14121-2 or CLC Guide 32 give information on how to carry out the risk

assessment.

Completeness, correctness and plausibility of the risk analysis of the manufacturer shall be verified by a

NB on the basis of the risks given below and using the guidance Annex FA. This verification is mainly a

documental control and may influence the details (e.g. the detailed measuring points in the hopper) of

the safety tests (A.4.10).
The risk assessment shall cover each relevant risk, especially the following:
— backburn into the hopper;
— combustion in the conveying system;
— malfunction of combustion air supply;
— blockage of the chimney;
— risk of explosion;
— single failure of electrical components.
For all electric hazards, LVD shall be followed.
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oSIST prEN 16510-2-6:2021
prEN 16510-2-6:2021 (E)

Force majeure risks shall not be taken into consideration (i.e. any event or occurrence which is outside

the reasonable control of the manufacturer concerned and which is not attributable to any act or failure

to take preventative action).
5.605 Safety shutdown in case of an unsafe situation

If an appliance shuts down for the reason of an unsafe situation this shall be such that a restart shall only

be possible manually.
For these risks, an automatic restart shall not be allowed.
6 Appliances Performance requirements in relation to the appliance operation

prEN 16510-1:2021, prEN 16510-2-2:2021 and prEN 16510-2-3:2021, Clause 6 shall be applicable as

necessary with the following modification(s).
6.2.2 Flue gas temperature at safety test
prEN 16510-1:2021, 6.2.2 shall be applicable with the following modification(s).
Replace 6.2.2 by the following:

When tested in accordance with A.4.10.3 the flue gas temperature shall be measured and the mean value

of the last 30 min of the test is determined. This value shall not exceed the designated Tclass of the

chimney. The chimney designation shall be at least T200 G.

NOTE National installation and building regulations are expected to be met in this particular item (often a T400

G is required in these regulations)
6.3.5 Particulate matter (PM/PME) emissions
prEN 16510-1:2021, 6.3.5 shall be applicable with the following modification(s).
Replace 6.3.5 by the following:

At all heat output rates specified by the manufacturer the mean particulate matter concentration

expressed as mg/m3 for PM/PME calculated to 13 % oxygen (O ) content, (dry, 273 K, 1 013 hPa) in the

flue gas is measured, and it shall be less than or equal to the manufacturer’s specified value expressed in

mg/m .

During each nominal test measure the PM/PME according to the following procedure:

— 30 min operation without measurement;
— 30 min filter 1st sampling and appropriate analysis;

— 30 min operation without measurement (filter may be exchanged in that period);

— 30 min filter 2nd sampling and appropriate analysis;

— 30 min operation without measurement (filter may be exchanged in that period);

— 30 min filter 3rd sampling and
...