oSIST prEN 16510-2-8:2026

Residential solid fuel burning appliances - Part 2-8: Gravimetrically pellet-fed room heaters

This document is applicable to gravimetrically pellet-fed room heaters, inset appliances and cookers.
The intended use of the appliances is space heating in residential buildings and can be cooking.
These appliances burn wood pellets only as specified in EN ISO 17225.
This document is not applicable to appliances which are in addition intended for non-gravimetrically fuelling with wood logs (e.g. from the front on top of the burner pot or even if a cover of the burner pot is provided and intended to be used).
This document is not applicable to appliances with fan assisted combustion air, appliances that are mechanically or to appliances fitted with a boiler (integral part of the appliance containing water to be heated up) for the supply of hot water for central heating systems.
This document is not applicable to appliances that can operate with fire door open.
This document specifies procedures for assessment and verification of constancy of performance (AVCP) of characteristics of solid fuel burning room heaters.

Häusliche Feuerstätten für feste Brennstoffe - Teil 2-8: Gravimetrisch beschickte Raumheizer

Dieses Dokument ist anzuwenden für gravimetrisch beschickte Pellet-Raumheizer, Kamineinsätze und Herde.
Der Verwendungszweck der Geräte ist Raumheizung in Wohngebäuden und kann Kochen sein.
Diese Geräte dürfen ausschließlich Holzpellets nach EN ISO 17225 verbrennen.
Dieses Dokument ist nicht anzuwenden für Geräte, die zusätzlich für eine nicht gravimetrische Beschickung mit Scheitholz vorgesehen sind (zum Beispiel von vorn oben in den Brennertopf oder auch dann, wenn eine Abdeckung des Brennertopfs vorhanden und zur Verwendung vorgesehen ist).
Dieses Dokument ist nicht anzuwenden für Geräte mit gebläseunterstützter Verbrennungsluft, für mechanisch beschickte Geräte und für Geräte mit einem Kessel (integraler, wasserführender Bestandteil des Geräts) zur Bereitstellung von Warmwasser für Zentralheizungssysteme.
Dieses Dokument ist nicht anzuwenden für Geräte, die mit geöffneter Feuerraumtür betrieben werden können.
Dieses Dokument legt das Verfahren für die Bewertung und Überprüfung der Leistungsbeständigkeit (en: assessment and verification of constancy of performance, AVCP) fest.

Equipement de chauffage domestique - Partie 2-8 : Poêles à pellet alimenté par gravimétrie

Le présent document s’applique aux poêles, inserts et cuisinières à granulés à alimentation par gravité.
L’usage prévu des appareils est le chauffage des locaux dans les bâtiments résidentiels et éventuellement la cuisson.
Ces appareils utilisent uniquement des granulés de bois spécifiés dans l’EN ISO 17225.
Le présent document ne s’applique pas aux appareils qui sont en outre destinés à être alimentés en bûches de bois par un mode autre que la gravité (par exemple par l’avant, au-dessus du pot brûleur, ou même si le pot brûleur est équipé d’un couvercle destiné à être utilisé).
Le présent document ne s’applique pas aux appareils avec combustion assistée par ventilateur, aux appareils à alimentation mécanique ou aux appareils équipés d’un bouilleur (partie intégrante de l’appareil contenant de l’eau à chauffer) pour l’alimentation en eau chaude de systèmes de chauffage central.
Le présent document ne s’applique pas aux appareils pouvant fonctionner avec la porte du foyer ouverte.
Le présent document spécifie des modes opératoires pour l’évaluation et la vérification de la constance des performances (EVCP) des caractéristiques des poêles à combustible solide.

Grelne naprave na trdna goriva za stanovanjske stavbe - 2-8. del: Sobni grelniki z gravimetričnim dovajanjem peletov

Ta dokument se uporablja za gravimetrično napajane sobne grelnike, vgradne naprave in štedilnike na pelete.
Namenjena uporaba naprav je ogrevanje prostorov v stanovanjskih stavbah in lahko tudi kuhanje.
Te naprave uporabljajo le lesne pelete, kot je določeno v EN ISO 17225.
Ta dokument ni uporaben za naprave, ki so poleg tega namenjene za negravimetrično napajanje z drvmi (npr. spredaj na vrhu gorilnega lonca ali tudi če je pokrov gorilnega lonca zagotovljen in namenjen za uporabo).
Ta dokument ni uporaben za naprave s prisilnim dovodom zgorevalnega zraka, naprave, ki so mehansko ali za naprave, opremljene s kotlom (integralni del naprave, ki vsebuje vodo za segrevanje) za oskrbo s toplo vodo za sisteme centralnega ogrevanja.
Ta dokument ni uporaben za naprave, ki lahko delujejo z odprtimi vratci kurišča.
Ta dokument določa postopke za ocenjevanje in preverjanje stalnosti lastnosti (AVCP) sobnih grelnikov na trdna goriva.

General Information

• Status: Not Published
• Public Enquiry End Date: 24-Jun-2026
• ICS: 97.100.30 - Solid fuel heaters
• Technical Committee: OGS - Heating for buildings
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 09-Apr-2026
• Due Date: 27-Aug-2026
• Directive: Harmonized Standard305/2011 - 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/577 AMD 1 - COMMISSION IMPLEMENTING DECISION of 28.1.2025 amending Implementing Decision C(2021) 5359 as regards harmonised standards for space heating appliances and the deadlines for the adoption of those standards
• Ref Project: prEN 16510-2-8 - Residential solid fuel burning appliances - Part 2-8: Gravimetrically pellet-fed room heaters

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2026
Grelne naprave na trdna goriva za stanovanjske stavbe - 2-8. del: Sobni grelniki z
gravimetričnim dovajanjem peletov
Residential solid fuel burning appliances - Part 2-8: Gravimetrically pellet-fed room
heaters
Häusliche Feuerstätten für feste Brennstoffe - Teil 2-8: Gravimetrisch beschickte
Raumheizer
Equipement de chauffage domestique - Partie 2-8 : Poêles à pellet alimenté par
gravimétrie
Ta slovenski standard je istoveten z: prEN 16510-2-8
ICS:
97.100.30 Grelniki na trdo gorivo Solid fuel heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2026
ICS 97.100.30
English Version
Residential solid fuel burning appliances - Part 2-8:
Gravimetrically pellet-fed room heaters
Equipement de chauffage domestique - Partie 2-8 : Häusliche Feuerstätten für feste Brennstoffe - Teil 2-8:
Poêles à pellet alimenté par gravimétrie Gravimetrisch beschickte Raumheizer
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, Türkiye 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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16510-2-8:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Characteristics . 7
4.1 Load bearing capacity . 7
4.2 Protection of combustible materials . 7
4.3 Carbon monoxide emission (CO) . 8
4.4 Nitrogen oxides (NO ) emissions . 8
x
4.5 Emission of organic gaseous compounds (OGC) . 9
4.6 Particulate matter (PM) emissions . 9
4.7 Safety and accessibility in use . 9
4.7.1 General . 9
4.7.2 Flue gas outlet temperature at nominal heat output . 9
4.7.3 Flue gas outlet temperature at part load heat output.10
4.7.4 Minimum flue draught at nominal heat output .10
4.7.5 Minimum flue draught at part load heat output .10
4.7.6 Flue gas mass flow at nominal heat output .10
4.7.7 Flue gas mass flow at part load heat output .10
4.7.8 Fire safety of installation to the chimney .10
4.8 Energy economy and heat retention .10
4.8.1 Space heat output at nominal heat output .10
4.8.2 Efficiency at nominal heat output .11
4.8.3 Space heat output at part load heat output .11
4.8.4 Efficiency at part load heat output .11
4.8.5 Seasonal space heating efficiency at appliance’s nominal heat output .11
4.8.6 Energy efficiency .12
4.8.7 Electric power consumption at nominal heat output, if existing .13
4.8.8 Electric power consumption at part load heat output, if existing .13
4.8.9 Standby mode power consumption, if existing .13
4.9 Environmental sustainability .13
5 Descriptive features .15
5.1 Data for potential use with room ventilation systems: type of appliance (in relation
to its tightness to the room) .15
5.2 Data for the building's statics: appliance's mass .15
5.3 Materials and construction elements .15
5.3.1 General .15
5.3.2 General stresses .15
5.4 Risk of burning fuel falling out .16
5.5 Temperature rise in the fuel storage .16
5.5.1 Temperature rise in the fuel hopper .16
5.5.2 Safety against back burning through the fuel conveyor system .16
5.6 Temperature rise of the operating components .16
5.7 Spillage of flue gases into the room .16
5.7.1 Possible spillage of CO, if relevant for the fuel type.16
5.7.2 Safety test for spillage of combustion gas and discharge of embers .16
5.7.3 Open operation .16
5.8 Cleanability .16
5.8.1 Heating surfaces . 16
5.8.2 Flue ways . 16
5.8.3 Ashpan . 16
5.8.4 Bottom grate . 17
5.8.5 Damper . 17
5.8.6 Fan-cut-out-device . 17
6 Assessment and verification of constancy of performance - AVCP . 17
6.1 General . 17
6.2 Assessment of performance . 17
6.2.1 General . 17
6.2.2 Test samples, testing and compliance criteria . 18
6.3 Verification of constancy of performance. 19
6.3.1 Factory production control (FPC) . 19
Annex A (normative) Test methods . 24
A.1 Test environment . 24
A.2 Test assembly . 24
A.3 Measurement equipment . 24
A.4 Test procedures . 24
A.4.1 Fuel load and basic fire bed . 24
A.4.2 Fuelling and de-ashing . 24
A.4.3 Combustible heat losses in the residue . 24
A.4.4 Performance test at nominal heat output . 24
A.4.4.1 General . 24
A.4.4.2 Ignition and pre-test period . 25
A.4.4.3 Test period . 25
A.4.5 Part load heat output test . 26
A.4.5.1 General . 26
A.4.5.2 Ignition and pre-test period . 26
A.4.5.3 Test period . 26
A.4.5.3.1 . Temperature safety test for woodburning and multifuel
appliances . 26
A.4.5.3.1.1
................................................................................................................................................................... Ge
neral . 26
A.4.5.3.1.2. Ignition and test
period . 27
A.4.5.3.1.3. Safety in case of backburn into the
hopper . 27
A.5 Test results. 28
A.6 Calculation methods . 28
A.7 Test report . 28
Annex H A (informative) Principle function of the gravimetrically pellet-fed room heater 29

European foreword
This document (prEN 16510-2-8:2026) 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.
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;
— Part 2-7: Combination appliances fired by wood logs and pellets;
— Part 2-8: Gravimetrically pellet-fed roomheaters.
Other sections of Part 2 will be added to cover residential solid fuel burning appliances not included in
parts 2-1 to 2-8.
Subclauses and Figures which are additional to those in EN 16510-1:2022 are numbered starting with
801. Annexes which are additional to those in EN 16510-1:2022 are numbered starting with HA.
1 Scope
This document is applicable to gravimetrically pellet-fed room heaters, inset appliances and cookers.
The intended use of the appliances is space heating in residential buildings and can be cooking.
These appliances burn wood pellets only as specified in EN ISO 17225.
This document is not applicable to appliances which are in addition intended for non-gravimetrically
fuelling with wood logs (e.g. from the front on top of the burner pot or even if a cover of the burner pot is
provided and intended to be used).
This document is not applicable to appliances with fan assisted combustion air, appliances that are
mechanically or to appliances fitted with a boiler (integral part of the appliance containing water to be
heated up) for the supply of hot water for central heating systems.
This document is not applicable to appliances that can operate with fire door open.
This document specifies procedures for assessment and verification of constancy of performance (AVCP)
of characteristics of solid fuel burning room heaters.
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 with the
following additions.
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/
3.801
gravimetrically pellet-fed room heater
appliance with a closed combustion chamber burning wood pellets on basis of a gravimetrical feeding of
fuel from a hopper into the combustion chamber
3.802
feeding chute
space on the bottom of the hopper where the fuel is lead into the combustion chamber
3.803
retort
(burner pot)
vessel forming the firebox of the appliance into which the fuel is gravimetrically fed from the fuel hopper
and in which it is burned
3.804
layer height limiter
slider in the feeding chute that limits the amount of fuel being gravimetrically fed into the retort
4 Characteristics
4.1 Load bearing capacity
The performance of the appliance in relation to the ability to carry a chimney shall be determined in
accordance with EN 16510-1:2022, 4.6.
If for an appliance with an upper outlet the ability to carry a chimney is specified the value of the
maximum load is to be given in [kg] as an integer according to EN 16510-1:2022, Table 22, no. 57
(m ).
chim
4.2 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 insulation material
thickness of protective if any
insulation material
[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
Protection measure Declared clearance distance to Protective
combustible material or insulation material
thickness of protective if any
insulation material
[mm]
Minimum distance to adjacent  -
combustible materials (e.g.
furniture) (d )
P
Protective insulation material (s)
4.3 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
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
closed fronted solid fuel local space heaters using
compressed wood in form of pellets including
900 mg/m
cookers
4.4 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)
x
is to be given in [mg/m ] as an integer according to EN 16510-1:2022, Table 22, no. 20 (NO
xnom
(13 % O )).
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 NO emissions (expressed as NO )
x 2
Appliance type Threshold level at 13 % O
closed fronted solid fuel local space heaters using
compressed wood in form of pellets including
200 mg/m
cookers
4.5 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)
is to be given in [mg/m ] as an integer according to EN 16510-1:2022, Table 22, no. 23 (OGC
nom
(13 % O )).
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
closed fronted solid fuel local space heaters using
compressed wood in form of pellets including
90 mg C/m
cookers
4.6 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
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 emissions
Appliance type Threshold level at 13 % O
closed fronted solid fuel local space heaters using
compressed wood in form of pellets including
30 mg/m
cookers
4.7 Safety and accessibility in use
4.7.1 General
The data for the installation to a chimney are to be evaluated at nominal heat output. Specific data are to
be evaluated at safety test heat output. Additional data are to be evaluated at part load heat output, if part
load is specified.
4.7.2 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
4.7.3 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
4.7.4 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 EN 16510-1:2022, 6.5.
The value of the minimum 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
4.7.5 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 be determined in accordance with EN 16510-1:2022, 6.5.
The minimum value of the flue draught if specified at part load heat output (if part load is specified) 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. 30 (p ).
part
4.7.6 Flue gas mass flow at nominal heat output
The performance of the appliance in relation to the flue gas mass flow at nominal heat output shall be
determined in accordance with EN 16510-1:2022, 6.12.
The flue gas mass flow value if specified at nominal heat output for the installation of the appliance to a
chimney is to be given in [g/s] with 1 decimal according to EN 16510-1:2022, Table 22, no. 50 (ϕ ).
f,g nom
4.7.7 Flue gas mass flow at part load heat output
The performance of the appliance in relation to the flue gas mass flow at part load heat output (if part
load is specified) shall be determined in accordance with EN 16510-1:2022, 6.12.
The flue gas mass flow value if specified at part load heat output (if part load is specified) for the
installation of the appliance to a chimney is to be given in [g/s] with 1 decimal according to
EN 16510-1:2022, Table 22, no. 51 (ϕ ).
f,g part
4.7.8 Fire safety of installation to the chimney
The performance of the appliance in relation to the flue gas temperature (mean value) at safety test shall
be determined in accordance with EN 16510-1:2022, A.4.10.4.
The data for installation of the appliance to a chimney with regards to the fire safety if specified is to be
given as the Tclass of the chimney required according to EN 16510-1:2022, 6.2.2 and EN 16510-1:2022,
Table 22, no. 49.
4.8 Energy economy and heat retention
4.8.1 Space heat output at nominal heat output
The performance of the appliance in relation to space heat output at nominal heat output shall be
determined in accordance with EN 16510-1:2022, 6.8.
The space heat output of the appliance if specified at nominal heat output is to be given in [kW] with 1
decimal according to EN 16510-1:2022, Table 22, no. 2 (P ).
SHnom
For the proper performance of the appliance the following shall be considered as well for those essential
characteristics and descriptive features assessed during the nominal heat output test (A.4.7).
Additional devices, such as flue gas outlet components, components built-in the flue ways, combustion
air supply control devices, charging doors and ash-pit doors, flue bypass devices, internal flue gas
diverters draught regulators for the safety or function of the appliance may be present.
Some of these devices are optional, but if present their influence on the performance of the appliance
shall be checked according to EN 16510-1:2022, 4.4.4, 4.4.6, 4.4.9, 4.4.11, 4.4.12, 4.4.13, 4.4.14, and 4.4.16.
4.8.2 Efficiency at nominal heat output
The performance of the appliance in relation to efficiency at nominal heat output shall be determined in
accordance with EN 16510-1:2022, 6.4.
The efficiency of the appliance if specified at nominal heat output is to be given in [%] as an integer
according to EN 16510-1:2022, Table 22, no. 13 (η ).
nom
4.8.3 Space heat output at part load heat output
The performance of the appliance in relation to space heat output at part load heat output (if part load is
specified) shall be determined in accordance with EN 16510-1:2022, 6.8.
The space heat output of the appliance if specified at part load heat output (if part load is specified is to
be given in [kW] with 1 decimal according to EN 16510-1:2022, Table 22, no. 5 (P ).
SHpart
For the proper performance of the appliance the following shall be considered as well for those essential
characteristics and descriptive features assessed during the part load heat output test (A.4.8).
Additional devices, such as flue gas outlet components, components built-in the flue ways, combustion
air supply control devices, charging doors and ash-pit doors, flue bypass devices, internal flue gas
diverters, front fire bars and/or draught regulators for the safety or function of the appliance may be
present.
Some of these devices are optional, but if present their influence on the performance of the appliance
shall be considered according to EN 16510-1:2022, 4.4.4, 4.4.6, 4.4.9, 4.4.11, 4.4.12, 4.4.13, 4.4.14, and
4.4.16.
4.8.4 Efficiency at part load heat output
The performance of the appliance in relation to efficiency at part load heat output (if part load is specified)
shall be determined in accordance with EN 16510-1:2022, 6.4.
The efficiency of the appliance if specified at part load heat output (if part load is specified) is to be given
in [%] as an integer according to EN 16510-1:2022, Table 22, no. 14 (η ).
part
4.8.5 Seasonal space heating efficiency at appliance’s nominal heat output
The performance of the appliance in relation to seasonal space heating efficiency at nominal heat output
shall be determined in accordance with EN 16510-1:2022, 6.4.2.
The seasonal space heating efficiency of the appliance if specified at nominal heat output is to be given in
[%] as an integer according to EN 16510-1:2022, Table 22, no. 15 (η ).
S
When tested in accordance with EN 16510-1:2022, 6.4.2 the seasonal space heating efficiency at nominal
heat output shall not underrun the threshold levels as given in Table 6.
Table 6 — Threshold level of seasonal space heating energy efficiency
Appliance type Threshold level
closed fronted solid fuel local space heaters using
compressed wood in form of pellets including 72 %
cookers
4.8.6 Energy efficiency
The performance of the appliance in relation to energy efficiency classification shall be determined in
accordance with EN 16510-1:2022, 6.4.3.
The energy efficiency classification of the appliance if specified shall be given according to
EN 16510-1:2022, Table 22, no. 16 (EEI) and shall be determined according to Table 7.
Table 7 — Energy efficiency classification based on the energy efficiency index (EEI)
Energy efficiency class Energy efficiency index (EEI)
A++ EEI ≥ 130
A+ 107 ≤ EEI < 130
A 88 ≤ EEI < 107
B 82 ≤ EEI < 88
C 77 ≤ EEI < 82
D 72 ≤ EEI < 77
E 62 ≤ EEI < 72
F 42 ≤ EEI < 62
G EEI < 42
4.8.7 Electric power consumption at nominal heat output, if existing
The performance of the appliance in relation to electric power consumption at nominal heat output shall
be determined in accordance with EN 16510-1:2022, 6.11.
The electric power consumption of the appliance if specified at nominal heat output is to be given in [kW]
with 3 decimals according to EN 16510-1:2022, Table 22, no. 43 (el ).
max
4.8.8 Electric power consumption at part load heat output, if existing
The performance of the appliance in relation to electric power consumption at part load heat output (if
part load is specified) shall be determined in accordance with EN 16510-1:2022, 6.11.
The electric power consumption of the appliance if specified at part load heat output (if part load is
specified) is to be given in [kW] with 3 decimals according to EN 16510-1:2022, Table 22, no. 44 (el ).
min
4.8.9 Standby mode power consumption, if existing
The performance of the appliance in relation to standby mode power consumption at standby mode
(where appropriate) shall be determined in accordance with EN 16510-1:2022, 6.11.
The standby mode power consumption of the appliance if specified is to be given in [kW] with 3 decimals
according to EN 16510-1:2022, Table 22, no. 42 (el ).
SB
4.9 Environmental sustainability
All relevant elements of the performance related to the whole life cycle of the appliance shall be identified
and enumerated on the basis on the information modules of EN 15804:2012+A2:2019.
The necessary environmental sustainability information shall be determined to enable the life cycle
analysis of the appliance concerned and the declaration of its performance in relation to the essential
characteristic environmental sustainability. This shall comprise in particular the definition of the
scenarios required for this complete period, including the reference service life, where appropriate.
The performance of the appliance in relation to the environmental sustainability shall be determined in
accordance with EN 16510-1:2022, Clause 8.
The environmental sustainability elements are given in Table 8.
Table 8 — Elements for the environmental sustainability
Environmental sustainability elements to be given in
Global Warming Potential total (GWP-total) kg CO equivalent
Global Warming Potential (GWP-fossil) kg CO equivalent
Global Warming Potential (GWP-biogenic) kg CO equivalent
Global Warming Potential land use and land use change (GWP-luluc) kg CO equivalent
Depletion potential of the stratospheric ozone layer (ODP) kg CFC 11 equivalent
Acidification potential, Accumulated Exceedance (AP) +
mol H equivalent
Eutrophication potential, Fraction of nutrients reaching freshwater kg P equivalent
end compartment (EP-freshwater)
Eutrophication potential, Fraction of nutrients reaching freshwater kg N equivalent
end compartment (EP-marine)
Eutrophication potential, Accumulated Exceedance (EP-terrestrial) mol N equivalent
Formation potential of tropospheric ozone (POCP) kg NMVOC equivalent
Abiotic depletion potential for non-fossil resources (ADP-minerals kg Sb equivalent
and metals)
Abiotic depletion potential for fossil resources (ADP-fossil) MJ, net calorific value
Water (user) deprivation potential, deprivation-weighted water 3
m world equivalent
consumption (WDP)
deprived
Potential incidence of disease due to PM emissions (PM) Disease incidence
Potential Human exposure efficiency relative to U235 (IRP) kBq U235 eq.
Potential Comparative Toxic Unit for ecosystems (ETP-fw) CTUe
Potential Comparative Toxic Unit for humans (HTP-c) CTUh
Potential Comparative Toxic Unit for humans (HTP-nc) CTUh
Potential soil quality index (SQP) dimensionless
Non-hazardous waste disposed kg
Radioactive waste disposed kg
Use of renewable primary energy excluding renewable primary MJ, net calorific value
energy resources used as raw materials
Use of renewable primary energy resources used as raw materials MJ, net calorific value
Total use of renewable primary energy resources (primary energy MJ, net calorific value
and primary energy resources used as raw materials)
Use of non-renewable primary energy excluding non-renewable MJ, net calorific value
primary energy resources used as raw materials
Use of non-renewable primary energy resources used as raw MJ, net calorific value
materials
Total use of non-renewable primary energy resources (primary MJ, net calorific value
energy and primary energy resources used as raw materials)
Use of secondary material kg
Use of renewable secondary fuels MJ, net calorific value
Use of non-renewable secondary fuels MJ, net calorific value
Use of net fresh water 3
m
Components for re-use kg
Materials for recycling kg
Materials for energy recovery kg
Exported energy MJ per energy carrier
5 Descriptive features
5.1 Data for potential use with room ventilation systems: type of appliance (in relation
to its tightness to the room)
The designation of the appliance in relation to the potential use with ventilation systems is to be given in
accordance with EN 16510-1:2022, 4.1.
5.2 Data for the building's statics: appliance's mass
The appliance’s mass in relation to the building’s statics is to be given in accordance with
EN 16510-1:2022, 7.2, paragraph 8).
5.3 Materials and construction elements
5.3.1 General
The shape and dimensions of the components and equipment and the method of design and manufacture
and, if assembled on site, the method of assembly and installation, shall ensure that, when operated as
specified in accordance with the test procedures of this document and exposed to the associated
mechanical, chemical and thermal stresses, the appliance shall operate reliably and safely such that
during normal operation no combustion gas posing a hazard can escape into the room in which the
appliance is installed nor can embers fall out.
Non-combustible materials (materials according to EN 16510-1:2022, 4.4.1.1) shall be used, except that
it shall be permissible to use combustible materials for the following applications:
— components or accessories fitted outside the appliance;
— internal components of controls and safety equipment;
— operating handles;
— electrical equipment.
5.3.2 General stresses
The proper operation of the appliance in relation to the general stresses to materials and construction
elements is to be tested in accordance with EN 16510-1:2022, 4.4.1 and 4.4.2.
5.4 Risk of burning fuel falling out
The risk of burning fuel falling out is not applicable for this type of appliances
5.5 Temperature rise in the fuel storage
5.5.1 Temperature rise in the fuel hopper
When tested during the temperature safety test in accordance with A.4.10.4 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 EN 16510-1:2022, Annex K).
For the necessary measuring points see Annex HA.
5.5.2 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 (back burning safety device) (refer to EN 16510-1:2022, Annex K for examples).
5.6 Temperature rise of the operating components
The rise of the temperature above ambient temperature of the operation components is to be tested in
accordance with EN 16510-1:2022, 5.5. This rise of the temperature shall not exceed the material specific
limits given in EN 16510-1:2022, 5.5.
5.7 Spillage of flue gases into the room
5.7.1 Possible spillage of CO, if relevant for the fuel type
The prevention of possible spillage of CO is to be tested in accordance with EN 16510-1:2022, 5.1 and
A.4.10.5 depending on the intended fuel type.
5.7.2 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.
5.7.3 Open operation
Open operation is not applicable for this specific type of appliances.
5.8 Cleanability
5.8.1 Heating surfaces
The safety of the heating surfaces especially in relation to cleanability is to be tested in accordance with
EN 16510-1:2022, 4.4.3.
5.8.2 Flue ways
The safety of the flue ways especially in relation to cleanability is to be tested in accordance with
EN 16510-1:2022, 4.4.5.
5.8.3 Ashpan
If an ashpan is fitted its safety especially in relation to cleanability is to be tested in accordance with
EN 16510-1:2022, 4.4.7.
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 one full charge of fuel in the hopper whilst retaining sufficient space above to allow
adequate primary air flow through the bottom grate or fire bed.
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.
5.8.4 Bottom grate
If a bottom grate is fitted its safety especially in relation to cleanability is to be tested in accordance with
EN 16510-1:2022, 4.4.8.
5.8.5 Damper
If a damper is fitted its safety especially in relation to cleanability is to be tested in accordance with
EN 16510-1:2022, 4.4.10.
The installation instructions shall give information on a possible installation of a damper in the flue gas
ways.
5.8.6 Fan-cut-out-device
If a fan-cut-out-device is fitted its safety especially in relation to cleanability is to be tested in accordance
with EN 16510-1:2022, 4.4.10 and EN 16510-2-4:2022, A.4.401.
6 Assessment and verification of constancy of performance - AVCP
6.1 General
The technical details necessary for the implementation of the system of assessment and verification of
constancy of performance comprise provisions with regards to:
— the assessment of the performance of the residential solid fuel burning appliance, which ma
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