SIST EN 16510-2-4:2023

Residential solid fuel burning appliances - Part 2-4: Independent boilers - Nominal heat output up to 50 kW

This Part 2-4 of EN 16510 is applicable to hand and automatically fired residential independent boilers having nominal heat outputs up to 50 kW, the primary function of which is to provide hot water for central heating and/or domestic use, and which are designed for use only with open vented systems at a working pressure not exceeding 2 bar. In addition to their primary function of providing hot water these appliances also provide space heating to the place of installation.
The appliances covered by this Part 2-4 of EN 16510 may burn one or more types of the following solid fuels in accordance with the appliance manufacturer’s instructions: .
 wood logs
 compressed untreated wood
 wood pellets
 solid mineral fuels
 peat briquettes.
This Part 2-4 of EN 16510 is not applicable to independent boilers for hot water only production and having heat outputs of less than 5 kW.
This Part 2-4 of EN 16510 is also not applicable to the design and construction of automatic stoking devices.
This Part 2-4 of EN 16510 is to be used in conjunction with EN 16510-1 of which it is an integral part

Häusliche Heizgeräte für feste Brennstoffe - Teil 2-4: Heizkessel für feste Brennstoffe - Nennwärmeleistung bis 50 kW

Dieses Dokument ist anzuwenden für Wohnraum-Heizkessel für feste Brennstoffe mit einer Nennwärmeleistungen bis 50 kW (hand- und automatisch beschickte Wohnraum-Heizkessel (im Folgenden „Geräte“ genannt)).
Der Verwendungszweck der Geräte ist Raumheizung in Wohngebäuden. Dies erfolgt direkt über die Bereitstellung von Warmwasser für die Zentralheizung. Sie sind nur für den Einsatz in offenen, entlüfteten Systemen mit einem Betriebsdruck von höchstens 2 bar vorgesehen.
Die Geräte können wie angegeben eine oder mehrere Arten der folgenden festen Brennstoffe verfeuern:
—   Scheitholz;
—   Holzbriketts;
—   Holzpellets;
—   Braunkohlenbriketts;
—   feste mineralische Brennstoffe;
—   Torfbriketts.
Die Geräte werden geschlossen und/oder offen betrieben.
Die Geräte werden nach ihrer Dichtheit entsprechend ihrer Bezeichnung in Abhängigkeit von einem möglichen Betrieb zusammen mit einem Raumlüftungssystem typisiert.
Dieses Dokument ist nicht anzuwenden auf:
—    Geräte, die nur der Warmwasserbereitung dienen und eine Wärmeleistung von weniger als 5 kW haben;
—   automatische Feuerungsanlagen.
Dieses Dokument legt das Verfahren für die Bewertung und Überprüfung der Leistungsbeständigkeit (AVCP) der Eigenschaften von Raumheizern für feste Brennstoffe fest.

Equipement de chauffage domestique - Partie 2-4 : Chaudières domestiques à combustible solide - Puissance calorifique nominale inférieure ou égale à 50 kW

Le présent document s’applique aux chaudières à combustible solide à installer dans le volume habitable, de puissance utile nominale inférieure ou égale à 50 kW (chaudières domestiques à combustion manuelle et automatique à installer dans le volume habitable, ci-après dénommées « appareils »).
L’usage prévu des appareils est le chauffage des locaux dans les bâtiments résidentiels, soit de façon directe soit par la fourniture d’eau chaude à des fins de chauffage central. Ils ne sont conçus que pour être utilisés avec des systèmes à expansion ouverts à une pression de service ne dépassant pas 2 bar.
Les appareils peuvent utiliser un ou plusieurs des types de combustibles solides suivants, comme spécifié :
-   bûches de bois ;
-   bois compressé non traité ;
-   granulés de bois ;
-   briquettes de lignite ;
-   combustibles minéraux solides ;
-   briquettes de tourbe.
Ces appareils fonctionnent fermés et/ou ouverts.
Ils sont classés en fonction de leur étanchéité, de leur désignation et d’un fonctionnement éventuel avec un système de ventilation des locaux.
Le présent document ne s’applique pas :
-   aux appareils uniquement destinés à la production d’eau chaude ayant une puissance utile inférieure à 5 kW ;
-   aux dispositifs à chargement automatique.
Le présent document spécifie des modes opératoires pour l’évaluation et la vérification de la constance des performances (EVCP) des caractéristiques des chaudières de chauffage à combustible solide à installer dans le volume habitable.

Grelne naprave na trdna goriva za stanovanjske stavbe - 2-4. del: Grelni kotli - Nazivna grelna moč do 50 kW

Ta del 2-4 standarda EN 16510 se uporablja za ročne in samodejne neodvisne kotle za stanovanjske stavbe z nazivno grelno močjo do 50 kW, katerih primarna funkcija je zagotavljanje tople vode za centralno ogrevanje in/ali gospodinjsko uporabo, in ki so zasnovani za uporabo samo z odprtimi ventiliranimi sistemi pri delovnem tlaku, ki ne presega 2 bara. Poleg svoje primarne funkcije zagotavljanja tople vode te naprave zagotavljajo tudi ogrevanje prostora, v katerem so nameščene.
V skladu z navodili proizvajalca je v napravah, ki jih obravnava ta del 2-4 standarda EN 16510, mogoče kuriti eno ali več vrst naslednjih trdnih goriv: .
 lesena polena
 stisnjen neobdelan les
 lesne pelete
 trdna mineralna goriva
 šotne brikete.
Ta del 2-4 standarda EN 16510 se ne uporablja za neodvisne kotle za proizvodnjo samo tople vode in z grelno močjo, manjšo od 5 kW.
Ta del 2-4 standarda EN 16510 se tudi ne uporablja za projektiranje in konstrukcijo avtomatskih kurilnih naprav.
Ta del 2-4 standarda EN 16510 je sestavni del standarda EN 16510-1 in ga je treba uporabljati v povezavi z njim.

General Information

• Status: Published
• Public Enquiry End Date: 04-May-2021
• Publication Date: 22-Jan-2023
• ICS: 91.140.65 - Water heating equipment
• ICS: 97.100.30 - Solid fuel heaters
• Technical Committee: OGS - Heating for buildings
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 28-Dec-2022
• Due Date: 04-Mar-2023
• Completion Date: 23-Jan-2023
• 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: EN 16510-2-4:2022 - Residential solid fuel burning appliances - Part 2-4: Independent boilers - Nominal heat output up to 50 kW

Relations

• Replaces: SIST EN 12809:2003/A1:2005 - Residential independent boilers fired by solid fuel - Nominal heat output up to 50 kW - Requirements and test methods
• Effective Date: 28-Dec-2022
• Replaces: SIST EN 12809:2003 - Residential independent boilers fired by solid fuel - Nominal heat output up to 50 kW - Requirements and test methods
• Effective Date: 28-Dec-2022
• Replaces: SIST EN 12809:2003/A1:2005/AC:2006 - Residential independent boilers fired by solid fuel - Nominal heat output up to 50 kW - Requirements and test methods
• Effective Date: 28-Dec-2022
• Replaces: SIST EN 12809:2003/A1:2005/AC:2008 - Residential independent boilers fired by solid fuel - Nominal heat output up to 50 kW - Requirements and test methods
• Effective Date: 28-Dec-2022
• Replaces: SIST EN 12809:2003/AC:2006 - Residential independent boilers fired by solid fuel - Nominal heat output up to 50 kW - Requirements and test methods
• Effective Date: 28-Dec-2022
• Replaces: SIST EN 12809:2003/AC:2004 - Residential independent boilers fired by solid fuel - Nominal heat output up to 50 kW - Requirements and test methods
• Effective Date: 28-Dec-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 16510-2-4:2023
01-marec-2023
Nadomešča:
SIST EN 12809:2003
SIST EN 12809:2003/A1:2005
SIST EN 12809:2003/A1:2005/AC:2006
SIST EN 12809:2003/A1:2005/AC:2008
SIST EN 12809:2003/AC:2004
SIST EN 12809:2003/AC:2006
Grelne naprave na trdna goriva za stanovanjske stavbe - 2-4. del: Grelni kotli -
Nazivna grelna moč do 50 kW
Residential solid fuel burning appliances - Part 2-4: Independent boilers - Nominal heat
output up to 50 kW
Häusliche Heizgeräte für feste Brennstoffe - Teil 2-4: Heizkessel für feste Brennstoffe -
Nennwärmeleistung bis 50 kW
Equipement de chauffage domestique - Partie 2-4 : Chaudières domestiques à
combustible solide - Puissance calorifique nominale inférieure ou égale à 50 kW
Ta slovenski standard je istoveten z: EN 16510-2-4:2022
ICS:
97.100.30 Grelniki na trdo gorivo Solid fuel heaters
SIST EN 16510-2-4:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 16510-2-4:2023

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SIST EN 16510-2-4:2023


EN 16510-2-4
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2022
EUROPÄISCHE NORM
ICS 91.140.65; 97.100.30 Supersedes EN 12809:2001
English Version

Residential solid fuel burning appliances - Part 2-4:
Independent boilers - Nominal heat output up to 50 kW
Appareils de chauffage domestiques à combustible Häusliche Feuerstätten für feste Brennstoffe - Teil 2-4:
solide - Partie 2-4 : Chaudières à installer dans le Heizkessel für feste Brennstoffe - Nennwärmeleistung
volume habitable - Puissance utile nominale inférieure bis 50 kW
ou égale à 50 kW
This European Standard was approved by CEN on 23 October 2022.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC 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
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, Türkiye and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16510-2-4:2022 E
worldwide for CEN national Members.

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SIST EN 16510-2-4:2023
EN 16510-2-4:2022 (E)
Contents Page
European foreword . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Characteristics . 6
4.1 Protection of combustible materials . 7
4.2 Carbon monoxide emission (CO) . 8
4.3 Nitrogen oxides (NO ) emissions . 8
x
4.4 Emission of organic gaseous compounds (OGC) . 9
4.5 Particulate matter (PM) emissions . 9
4.6 Safety and accessibility in use . 10
4.6.1 General . 10
4.6.2 Flue gas outlet temperature at nominal heat output . 10
4.6.3 Flue gas outlet temperature at part load heat output. 10
4.6.4 Minimum flue draught. 10
4.6.5 Flue gas mass flow at nominal heat output . 12
4.6.6 Flue gas mass flow at part load heat output . 12
4.6.7 Fire safety of installation to the chimney . 12
4.7 Energy economy and heat retention . 12
4.7.1 Space heat output at nominal heat output . 12
4.7.2 Water heat output, if existing at nominal heat output. 12
4.7.3 Efficiency at nominal heat output . 13
4.7.4 Space heat output at part load heat output . 13
4.7.5 Water heat output, if existing at part load heat output . 13
4.7.6 Efficiency at part load heat output . 13
4.7.7 Seasonal space heating efficiency at appliance’s nominal heat output . 13
4.7.8 Energy efficiency . 14
4.7.9 Electric power consumption at nominal heat output, if existing . 14
4.7.10 Electric power consumption at part load heat output, if existing . 14
4.7.11 Standby mode power consumption, if existing . 15
4.8 Environmental sustainability . 15
5 Descriptive features . 16
5.1 Data for potential use with room ventilation systems: type of appliance (in relation
to its tightness to the room) . 16
5.2 Data for the building's statics: appliance's mass . 16
5.3 Materials and construction elements . 16
5.3.1 General . 16
5.3.2 General stresses . 17
5.3.3 Integral boiler or heat exchanger . 17
5.4 Risk of burning fuel falling out . 17
5.5 Temperature rise in the fuel storage . 17
5.6 Temperature rise of the operating components . 17
5.7 Spillage of flue gases into the room . 17
5.7.1 Possible spillage of CO, if relevant for the fuel type. 17
5.7.2 Open operation . 17
2

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EN 16510-2-4:2022 (E)
5.8 Cleanability . 17
5.8.1 Heating surfaces . 17
5.8.2 Flueways . 17
5.8.3 Ashpan . 18
5.8.4 Bottomgrate . 18
5.8.5 Damper . 18
5.8.6 Fan-cut-out-device . 18
5.9 Strength and leak tightness of boiler shells . 18
6 Assessment and verification of constancy of performance - AVCP . 18
6.1 General . 18
6.2 Assessment of performance . 18
6.2.1 General . 18
6.2.2 Test samples, testing and compliance criteria . 19
6.3 Verification of constancy of performance . 21
6.3.1 Factory production control (FPC) . 21
Annex A (normative) Test methods . 25
A.1 Test environment . 25
A.2 Test assembly . 25
A.3 Measurement equipment. 25
A.4 Test procedures . 25
A.5 Test results . 28
A.6 Calculation methods . 28
A.7 Test report . 28
Annex ZA (informative) Relationship of this European Standard with Regulation (EU) No.
305/2011 . 29
ZA.1 Scope and relevant characteristics . 29
ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 32
ZA.3 Assignment of AVCP tasks . 33

3

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SIST EN 16510-2-4:2023
EN 16510-2-4:2022 (E)
European foreword
This document (EN 16510-2-4:2022) 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 June 2023, and conflicting national standards shall be
withdrawn at the latest by November 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12809:2001 as amended and corrected. In relation to EN 12809:2001 as
amended and corrected the following changes have been made:
— measurement methods for NO , hydrocarbon and particulate matter emissions for solid fuel burning
x
appliances;
— specifications for classification of solid fuel burning appliances and system boundaries for room
sealed appliances;
— requirements for the safety of solid fuel burning appliances with water-bearing components added;
— Annex ZA updated according to requirements of M/577;
— energy efficiency and energy class labelling and seasonal space heating efficiency added;
— requirements for environmental sustainability added.
This document has been prepared under a standardization request given to CEN 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 — 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.
4

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SIST EN 16510-2-4:2023
EN 16510-2-4:2022 (E)
Subclauses and Figures which are additional to those in EN 16510-1:2022 are numbered starting with
401. Annexes which are additional to those in EN 16510-1 are numbered starting with DA.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Türkiye and the United
Kingdom.
5

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SIST EN 16510-2-4:2023
EN 16510-2-4:2022 (E)
1 Scope
This document is applicable to independent boiler appliances for solid fuel with a nominal output up to
50 kW (hand and automatically fired independent boilers (hereafter called appliances)).
The indented use of the appliances is space heating in residential buildings. This happens directly or via
provision of hot water for central heating. They are designed for use only with open vented systems at a
working pressure not exceeding 2 bar.
The appliances can burn one or more types of the following solid fuels as specified:
— wood logs;
— compressed untreated wood;
— wood pellets;
— lignite briquettes;
— solid mineral fuels;
— peat briquettes.
The appliances are operated closed and/or open.
The appliances are typed according to their tightness depending on their designation in accordance with
a possible operation together with a room ventilation system.
This document is not applicable for:
— appliances for hot water only production and heat output < 5 kW;
— automatic stoking devices.
This document specifies procedures for assessment and verification of constancy of performance (AVCP)
of characteristics of solid fuel burning independent boiler appliances.
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.
EN 15804:2012+A2:2019, Sustainability of construction works — Environmental product declarations —
Core rules for the product category of construction products
EN 16510-1:2022, Residential solid fuel burning appliances — Part 1: General requirements and test
methods
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 16510-1:2022 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/
6

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SIST EN 16510-2-4:2023
EN 16510-2-4:2022 (E)
4 Characteristics
4.1 Protection of combustible materials
The performance of the appliance in relation to protection of combustible materials shall be determined
in accordance with EN 16510-1:2022, 5.6.
When tested in accordance with EN 16510-1:2022, 5.6, the protection measure(s) as specified according
to table 1 shall be given as minimum distance to combustible materials and if appropriate as material
type and thickness of protective insulation material.
The protection measures as specified shall be given in [mm] as an integer according to EN 16510-1:2022,
Table 22, no. 33, 34, 35, 36, 37, 38, 39 and 41 (d , d , d , d , d , d , d , s).
R S C P F L B
Table 1 — Protection of combustible materials
Protection measure Declared clearance distance to Protective
combustible material or thickness insulation material
of protective insulation material if any
[mm]
Minimum distance to  --
combustible materials –
bottom (d )
B
Minimum distance to --
combustible materials –
floor in front (d )
F
Minimum distance to --
combustible materials –
ceiling (d )
C
Minimum distance to --
combustible materials – rear
)
(d
R
Minimum distance to --
combustible materials – side
(d )
S
Minimum distance to --
combustible materials – side
radiation area (d )
L
Minimum distance to  --
adjacent combustible
materials (e.g. furniture)
(d )
P
Protective insulation
material (s)
7

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SIST EN 16510-2-4:2023
EN 16510-2-4:2022 (E)
4.2 Carbon monoxide emission (CO)
The performance of the appliance in relation to carbon monoxide emission at nominal heat output and at
part load heat output (if part load is specified) shall be determined in accordance with EN 16510-1:2022,
6.3.1 and 6.3.2.
The CO value if specified at nominal heat output and at part load heat output (if part load is specified) is
3
to be given in [mg/m ] as an integer according to EN 16510-1:2022, Table 22, no. 17 (CO (13 % O )).
nom 2
When tested in accordance with EN 16510-1:2022, 6.3.2 the CO emission at nominal heat output shall not
exceed the threshold levels as given in Table 2.
Table 2 — Threshold levels for CO emission
Appliance type Threshold level at 13 % O
2
3
open fronted solid fuel local space heaters 2000 mg/m
closed fronted solid fuel local space heaters using
3
solid fuel other than compressed wood in the form
1500 mg/m
of pellets including cookers
closed fronted solid fuel local space heaters using
3
compressed wood in form of pellets including
300 mg/m
cookers
4.3 Nitrogen oxides (NO ) emissions
x
The performance of the appliance in relation to nitrogen oxides emissions at nominal heat output and at
part load heat output (if part load is specified) shall be determined in accordance with EN 16510-1:2022,
6.3.1 and 6.3.3.
The NO value if specified at nominal heat output and at part load heat output (if part load is specified) is
x
3
to be given in [mg/m ] as an integer according to EN 16510-1:2022, Table 22, no. 20 (NO (13 % O )).
xnom 2
When tested in accordance with EN 16510-1:2022, 6.3.3 the NO emissions at nominal heat output shall
x
not exceed the threshold levels as given in Table 3.
Table 3 — Threshold levels for NOx emission (expressed as NO )
2
Appliance type Threshold level at 13 % O
2
open fronted solid fuel local space heaters, closed
3
fronted solid fuel local space heaters and cookers
200 mg/m
using biomass
open fronted solid fuel local space heaters, closed
3
fronted solid fuel local space heaters and cookers
300 mg/m
using fossil solid fuel
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EN 16510-2-4:2022 (E)
4.4 Emission of organic gaseous compounds (OGC)
The performance of the appliance in relation to organic gaseous compounds emission at nominal heat
output and at part load heat output (if part load is specified) shall be determined in accordance with
EN 16510-1:2022, 6.3.1 and 6.3.4.
The OGC value if specified at nominal heat output and at part load heat output (if part load is specified)
3
is to be given in [mg/m ] as an integer according to EN 16510-1:2022, Table 22, no. 23 (OGC
nom
(13 % O )).
2
When tested in accordance with EN 16510-1:2022, 6.3.4 the OGC emission at nominal heat output shall
not exceed the threshold levels as given in Table 4.
Table 4 — Threshold levels for OGC emission (expressed as C)
Appliance type Threshold level at 13 % O
2
3
open fronted solid fuel local space heaters
120 mg C/m
closed fronted solid fuel local space heaters using
3
solid fuel other than compressed wood in the form 120 mg C/m
of pellets including cookers
closed fronted solid fuel local space heaters using
3
compressed wood in form of pellets including
60 mg C/m
cookers
4.5 Particulate matter (PM) emissions
The performance of the appliance in relation to particulate matter emissions at nominal heat output and
at part load heat output (if part load is specified) shall be determined in accordance with
EN 16510-1:2022,6.3.1 and 6.3.5.
The particulate matter value if specified at nominal heat output and at part load heat output (if part load
3
is specified) is to be given in [mg/m ] as an integer according to EN 16510-1:2022, Table 22, no. 26
(PM (13 % O )).
nom 2
When tested in accordance with EN 16510-1:2022, 6.3.5 the particulate matter (PM) emissions at
nominal heat output shall not exceed the threshold levels as given in Table 5.
Table 5 — Threshold levels for PM emission
Appliance type Threshold level at 13 % O
2
3
open fronted solid fuel local space heaters 50 mg/m
closed fronted solid fuel local space heaters using
3
solid fuel other than compressed wood in the form
40 mg/m
of pellets and cookers
closed fronted solid fuel local space heaters using
3
20 mg/m
compressed wood in form of pellets
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SIST EN 16510-2-4:2023
EN 16510-2-4:2022 (E)
4.6 Safety and accessibility in use
4.6.1 General
The data for the installation to a chimney are to be evaluated at nominal heat output. Specific data is to
be evaluated at safety test heat output. Additional data is to be evaluated at part load heat output, if part
load is specified.
4.6.2 Flue gas outlet temperature at nominal heat output
The performance of the appliance in relation to flue gas outlet temperature at nominal heat output shall
be determined in accordance with EN 16510-1:2022, 6.2.1.
The value of the flue gas outlet temperature for the installation of the appliance to a chimney if specified
is to be given in [°C] as an integer according to EN 16510-1:2022, Table 22, no. 47 (T ).
snom
4.6.3 Flue gas outlet temperature at part load heat output
The performance of the appliance in relation to flue gas outlet temperature at part load heat output (if
part load is specified) shall be determined in accordance with EN 16510-1:2022, 6.2.1.
The value of the flue gas outlet temperature at part load heat output (if part load is specified) for the
installation of the appliance to a chimney if specified is to be given in [°C] as an integer according to
EN 16510-1:2022, Table 22, no. 48 (T ).
spart
4.6.4 Minimum flue draught
4.6.4.1 General
The flue draught values, related to the appliance's nominal heat output, given in Figure 1, shall be taken
as the values for the static pressure to be applied in the measurement section (see EN 16510-1:2022,
Figures A.10, A.11 and A.12) when undertaking the nominal heat output test in accordance with A.4.7,
the part load heat output test in accordance with A.4.8, the slow combustion test for continuous burning
appliances in accordance with A.4.9 and the safety test in accordance with A.4.10.
Where the flue draught values given in Figure 1 need to be exceeded in order to obtain the specified
nominal output, the required flue draught shall be clearly stated in the appliance's installation
instructions.
This means that a value above 12 Pa, but not below 12 Pa may be specified.
10

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EN 16510-2-4:2022 (E)

Key
X nominal heat output (kW)
Y flue draught (Pa)
1 nominal heat output test
2 slow combustion test
Figure 1 — Flue draught values
When undertaking the nominal heat output test in accordance with A.4.7 the flue static pressure shall be
set to the value based upon the claimed nominal heat output as given in Figure 1 or, if necessary, such
higher value specified and the mean value shall be within ±1 Pa of this specified flue draught value.
During the test, the individual measurements shall be kept within ±2 Pa of this specified flue draught
value.
NOTE It is not allowed to set the value below that given in Figure 1 e.g. 19 Pa for a given value of 20 Pa.
For the slow combustion test in accordance with A.4.9 the static pressure shall be a target value of 6 Pa
as given in Figure 1 and shall be kept within ±1 Pa of this specified value.
For appliances having a fan assisted primary air supply, the static pressure in the measurement section
shall be set to the value which gives the specified over-firebed pressure.
4.6.4.2 Flue draught test point
A test tapping for the measurement of the flue draught shall be provided either in the boiler flueway or
in the flue gas connector.
If a draught regulator is incorporated, the test measurement point shall be taken before the draught
regulator.
4.6.4.3 Minimum flue draught at nominal heat output
The performance of the appliance in relation to the minimum flue draught at nominal heat output shall
be determined in accordance with 4.6.4.1 and 4.6.4.2.
The minimum value of the flue draught if specified at nominal heat output for the installation of the
appliance to a chimney is to be given in [Pa] as an integer according to EN 16510-1:2022, Table 22, no.
29 (p ).
nom
4.6.4.4 Minimum flue draught at part load heat output
The performance of the appliance in relation to the minimum flue draught at part load heat output (if part
load is specified) shall
...

SLOVENSKI STANDARD
oSIST prEN 16510-2-4:2021
01-april-2021
Stanovanjske grelne naprave na trdna goriva - 2-4. del: Grelni kotli - Nazivna
grelna moč do 50 kW
Residential solid fuel burning appliances - Part 2-4: Independent boilers - Nominal heat
output up to 50 kW
Häusliche Heizgeräte für feste Brennstoffe - Teil 2-4: Heizkessel für feste Brennstoffe -
Nennwärmeleistung bis 50 kW
Equipement de chauffage domestique - Partie 2-4 : Chaudières domestiques à
combustible solide - Puissance calorifique nominale inférieure ou égale à 50 kW
Ta slovenski standard je istoveten z: prEN 16510-2-4
ICS:
97.100.30 Grelniki na trdo gorivo Solid fuel heaters
oSIST prEN 16510-2-4:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 16510-2-4:2021

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oSIST prEN 16510-2-4:2021


DRAFT
EUROPEAN STANDARD
prEN 16510-2-4
NORME EUROPÉENNE

EUROPÄISCHE NORM

April 2021
ICS 91.140.65; 97.100.30
English Version

Residential solid fuel burning appliances - Part 2-4:
Independent boilers - Nominal heat output up to 50 kW
Equipement de chauffage domestique - Partie 2-4 : Häusliche Heizgeräte für feste Brennstoffe - Teil 2-4:
Chaudières domestiques à combustible solide - Heizkessel für feste Brennstoffe - Nennwärmeleistung
Puissance calorifique nominale inférieure ou égale à 50 bis 50 kW
kW
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 16510-2-4:2021 E
worldwide for CEN national Members.

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oSIST prEN 16510-2-4:2021
prEN 16510-2-4:2021 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Descriptive features . 5
5 Appliances Performance requirements in relation to safety . 6
6 Appliances Performance requirements in relation to the appliance operation . 6
7 Appliance instructions . 8
8 Sustainable use of natural resources . 8
9 Assessment and verification of constancy of performance - AVCP . 9
10 Marking and technical datasheet . 9
Annex A (normative) Test methods . 10
A.1 Test environment . 10
A.2 Test assembly . 10
A.3 Measurement equipment . 10
A.4 Test procedures . 10
A.5 Test results . 12
A.6 Calculation methods . 12
A.7 Test report . 12
Annex B (normative) Test fuels and recommended fuels . 14
Annex C (informative) Arrangement for measuring the leakage rate . 15
Annex D (normative) Measuring procedure for nitrogen oxides (NOx) . 16
Annex E (normative)  Measuring procedure for organic gaseous compounds (OGC) . 17
Annex F (normative) Measuring procedure for particulate matter (PM) . 18
Annex G (informative) Guideline for the characteristics to be taken into account in order to
decide on families of appliances . 19
Annex H (informative) Deviation of measuring results as a basis for market surveillance
measurements . 20
Annex I (informative) Standing Air Loss . 21
Annex J (informative) A-deviations . 22
Annex K (normative) Energy Label . 23
Annex ZA (informative) Relationship of this European Standard with Regulation (EU) No.
305/2011 . 24
ZA.1 Scope and relevant characteristics . 24
2

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ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 27
ZA.3 Assignment of AVCP tasks . 27

3

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oSIST prEN 16510-2-4:2021
prEN 16510-2-4:2021 (E)
European foreword
This document (prEN 16510-2-4:2021) 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 prEN 16510-1:2021 will supersede EN 12809:2001 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 – 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 2-4 supplements or modifies the corresponding clauses in EN 16510-1, so as to convert that
publication into the European Standard: Residential solid fuel burning appliances – Requirements and test
methods for independent boilers – Nominal heat output up to 50 kW .
This document is expected to be used in conjunction with EN 16510-1. 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 be 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
401. Annexes which are additional to those in EN 16510-1 are numbered starting with DA.
4

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oSIST prEN 16510-2-4:2021
prEN 16510-2-4:2021 (E)
1 Scope
This document is applicable to hand and automatically fired residential independent boilers (hereafter
called appliances) having a nominal heat outputs up to 50 kW.
The primary function of the appliance is to provide hot water for central heating and/or domestic use. In
addition to their primary function of providing hot water these appliances also provide space heating to
the place of installation. They are designed for use only with open vented systems at a working pressure
not exceeding 2 bar.
The appliances can burn one or more types of the following solid fuels in accordance with the appliance
manufacturer’s instructions:
— wood logs;
— compressed untreated wood;
— wood pellets;
— lignite briquettes;
— solid mineral fuels;
— peat briquettes.
The appliances are operated closed and / or open.
The appliances are typed according to their tightness depending on their designation in accordance with
a possible operation together with a room ventilation system.
This document is not applicable to appliances for hot water only production and having heat outputs of
less than 5 kW.
This document is also not applicable for automatic stoking devices.
This document is used in conjunction with EN 16510-1 of which it is an integral part.
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.
prEN 16510-1:2021, Residential solid fuel burning appliances - Part 1: General requirements and test
methods
3 Terms and definitions
For the purposes of this document, the terms and definitions given in prEN 16510-1:2021 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/
4 Descriptive features
prEN 16510-1:2021, Clause 4, shall be applicable with the following modifications.
5

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oSIST prEN 16510-2-4:2021
prEN 16510-2-4:2021 (E)
4.3 Product documentation
prEN 16510-1:2021, 4.3 shall be applicable.
4.4 Construction and materials
prEN 16510-1:2021, 4.4 shall be applicable with the following addition.
Additional clauses in 4.4.
4.4.401 Flue draught test point
A test tapping for the measurement of the flue draught shall be provided either in the boiler flueway or
in the flue gas connector.
If a draught regulator is incorporated, the test measurement point shall be taken before the draught
regulator.
4.4.402 Fan cut-out safety device
If the appliance is fitted with a forced draught fan to provide combustion air, then a cut-out safety device
shall be provided to switch off the fan in the event of a flue blockage (see 4.4.401).
5 Appliances Performance requirements in relation to safety
prEN 16510-1:2021, Clause 5, shall be applicable.
6 Appliances Performance requirements in relation to the appliance operation
prEN 16510-1:2021, Clause 6, shall be applicable with the following modification.
6.4 Efficiency
prEN 16510-1:2021, 6.4, shall be applicable with the following modification.
st
Addition after the 1 paragraph:
The manufacturer’s declared efficiency value shall be equal to or exceed the value given by the following
Figure 401.
6

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oSIST prEN 16510-2-4:2021
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Key
X nominal heat output (kW)
Y efficiency (%)
1 test fuels other than 2 or 3
2 bituminous coal, lignite briquettes & peat briquettes
3 wood logs
Figure 401 — Efficiency at nominal heat output
6.5 Flue draught
prEN 16510-1:2021, 6.5, shall be applicable with the following modifications.
Replacement of Figure 2:

Key
X nominal heat output (kW)
Y flue draught (Pa)
1 nominal heat output test
2 slow combustion test
Figure 2 — Flue draught values
Replacement of the final two paragraphs including Note 2:
When undertaking the nominal heat output test in accordance with A.4.7 the flue static pressure shall be
set to the value based upon the claimed nominal heat output as given in Figure 2 or, if necessary, such
higher value specified by the manufacturer and the mean value shall be within ± 1 Pa of this specified flue
draught value. During the test, the individual measurements shall be kept within ± 2 Pa of this specified
flue draught value.
7

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NOTE 2 It is not allowed to set the value below that given in Figure 2 e.g. 19 Pa for a given value of 20 Pa.
For the slow combustion test in accordance with A.4.9 the static pressure shall be a target value of 6 Pa
as given in Figure 1 and shall be kept within ± 1 Pa of this specified value.
For appliances having a fan assisted primary air supply, the static pressure in the measurement section
shall be set to that value which gives the manufacturer’s declared over-firebed pressure.
6.6 Recovery test
prEN 16510-1:2021, 6.6, shall be applicable with the following modification.
Replacement of paragraph 2:
Recovery shall be deemed satisfactory if a small part of the fuel is visibly ignited within 30 min with a flue
draught of (6 ± 1) Pa under the test conditions specified in A.4.9.4.
6.7 Refuelling intervals
prEN 16510-1:2021, 6.7, shall be applicable with the following modification.
Replacement of Table 12:
Table 12 — Minimum refuelling intervals
Appliance type Test fuel type Minimum refuelling
(as detailed in Table B.1) interval hours
at nominal heat output
Batch fed appliances Wood logs or peat briquettes 2
 All other test fuels 4
Hopper fed appliances Anthracite 10
at slow combustion
Batch fed appliances Wood logs or peat briquettes 10
 All other test fuels 15
Hopper fed appliances Anthracite 48
Addition of the following new subclause:
6.401 Fan cut-out safety device
Where a safety cut-out device is provided for a fan supplying forced draught combustion air as specified
in 4.4.402 then when tested in accordance with A.4.401, the safety device shall switch off the fan within
15 min following obstruction of the flue.
7 Appliance instructions
prEN 16510-1:2021, Clause 7, shall be applicable.
8 Sustainable use of natural resources
prEN 16510-1:2021, Clause 8, shall be applicable.
8

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oSIST prEN 16510-2-4:2021
prEN 16510-2-4:2021 (E)
9 Assessment and verification of constancy of performance - AVCP
prEN 16510-1:2021, Clause 9, shall be applicable.
10 Marking and technical datasheet
prEN 16510-1:2021, Clause 10, shall be applicable.
9

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oSIST prEN 16510-2-4:2021
prEN 16510-2-4:2021 (E)
Annex A
(normative)

Test methods
A.1 Test environment
prEN 16510-1:2021, A.1, shall be applicable.
A.2 Test assembly
prEN 16510-1:2021, A.2, shall be applicable.
A.3 Measurement equipment
prEN 16510-1:2021, A.3, shall be applicable.
A.4 Test procedures
prEN 16510-1:2021, A.4, shall be applicable with the following modification.
A.4.7 Performance test at nominal heat output
prEN 16510-1:2021, A.4.7, shall be applicable with the following modification.
A.4.7.1 General
prEN 16510-1:2021, A.4.7.1, shall be applicable with the following modifications.
nd
Deletion of the 2 paragraph
th
Replacement of the 4 paragraph:
The test may start from cold or ma
...