Heading 1STD Version 2.8d J:\Intcom\CEN\CEN 295\Projects\16510-2-1 00295042\FV\Second submission\FprEN_16510_2-1.docx 1 2 438 FprEN 16510-2-1:2021 (E) 50Heading 2 0 0CEN295Residential solid fuel burning appliances002950422-1102021FprEN 16510-2-1:2021BSIResidential solid fuel burning appliances — Part 2-1: RoomheatersHäusliche Feuerstätten für feste Brennstoffe — Teil 2-1: RaumheizerEquipement de chauffage domestique — Partie 2-1 : PoêlesEuropean Standard Formal Vote 00 E True 10EN 16510-2-1CEN/TC 295

Date: 2024-12

prEN 16510-2-10:2024

CEN/TC 295

Secretariat: BSI

Residential solid fuel burning appliances – Part 2-10: Multi-firing sauna stoves fired by natural wood logs

Häusliche Feuerstätten für feste Brennstoffe — Teil 2-10: Mehrfach befeuerbare Saunaöfen zur Verfeuerung von Naturholzscheiten

Equipement de chauffage domestique — Partie 2-10 : Poêles de sauna à allumage multiple à bûches de bois naturelles

ICS:

Descriptors:

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 (NOx) emissions 9

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 Minimum flue draught at nominal heat output 9

4.7.4 Flue gas mass flow at nominal heat output 10

4.7.5 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 Water heat output, if existing at nominal heat output 10

4.8.3 Efficiency at nominal heat output 10

4.8.4 Electric power consumption at nominal heat output, if existing 10

4.8.5 Standby mode power consumption, if existing 11

4.9 Environmental sustainability 11

5 Descriptive features 12

5.1 Data for potential use with room ventilation systems: type of appliance (in relation to its tightness to the room) 12

5.2 Data for the building's statics: appliance's mass 12

5.3 Materials and construction elements 13

5.3.1 General 13

5.3.2 General stresses 13

5.3.3 Integral boiler or heat exchanger 13

5.4 Risk of burning fuel falling out 13

5.5 Temperature rise in the fuel storage 13

5.6 Temperature rise of the operating components 13

5.7 Spillage of flue gases into the room 13

5.7.1 Possible spillage of C, if relevant for the fuel type 13

5.7.2 Open operation 14

5.8 Cleanability 14

5.8.1 Heating surfaces 14

5.8.2 Flueways 14

5.8.3 Ashpan 14

5.8.4 Bottomgrate 14

5.8.5 Damper 14

5.8.6 Fan-cut-out-device 14

5.9 Strength and leak tightness of boiler shells 14

6 Assessment and verification of constancy of performance - AVCP 14

6.1 General 14

6.2 Assessment of performance 15

6.2.1 General 15

6.2.2 Test samples, testing and compliance criteria 15

6.3 Verification of constancy of performance 16

6.3.1 Factory production control (FPC) 16

6.3.2 Initial inspection of factory to validate environmental sustainability company specific data 20

6.3.3 Environmental sustainability assessment validation 21

Annex A (normative) Test methods 22

A.1 Test environment 22

A.1.1 Ambient room temperature 22

A.1.1001 Sauna test room internal temperature 22

A.2 Test assembly 22

A.2.1 General 22

A.2.2 Measurement section 24

A.2.2.1 Safety distance to the appliance’s front measurement 24

A.2.1001 Sauna test room 25

A.3 Measurement equipment 27

A.4 Test procedures 27

A.4.1 Appliance installation 27

A.4.1.1 Appliance installation procedure 27

A.4.2 Fuel load and basic firebed 28

A.4.2.1001 Calculation of batch charges of test load 28

A.4.4 Flue gas losses 28

A.4.4.2 Composition of the flue gas 28

A.4.7 Performance test at nominal heat output 28

A.4.7.1 General 28

A.4.7.3 Test period 29

A.4.10 Safety tests 31

A.4.10.1 Temperature safety tests 31

A.4.10.1.1 Temperature safety test for woodburning and multifuel appliances 31

A.4.10.1.1.1 General 31

A.4.10.1.1.2 Ignition and test period 31

A.4.11 Safety tests of roomsealed appliances 32

A.5 Test results 32

A.6 Calculation methods 32

A.6.1 Formulae 32

A.6.1.1 Heat losses and efficiency 33

A.6.1.2 Space heat output 33

A.7 Test report 33

Annex ZA (informative) Relationship of this European Standard with Regulation (EU) No. 305/2011 34

ZA.1 Scope and relevant characteristics 34

ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) 38

ZA.3 Assignment of AVCP tasks 38

European foreword

This document (prEN 16510-2-10:2024) has been prepared by Technical Committee CEN/TC 295 “Residential solid fuel burning appliances”, the secretariat of which is held by BSI.

This document is currently submitted to the CEN Enquiry.

This document will supersede EN 15821:2010 as amended and corrected.

prEN 16510-2-10 includes the following significant technical changes with respect to EN 15821:2010:

— measurement methods for NOx, hydrocarbon and particulate matter emissions for solid fuel burning appliances;

— specifications for classification of solid fuel burning appliances and system boundaries for room sealed appliances;

— Annex ZA updated according to requirements of M/577 and its amendments;

— Assessment and verification of constancy of performance – AVCP 3+ added;

— requirements for environmental sustainability added.

This document has been prepared under a standardization request given to CEN by the European Commission. The Standing Committee of the EFTA States subsequently approves these requests for its Member States.

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.

— Part 2-7: Combination appliances fired by wood logs and pellets.

— Part 2-10: Multi-firing sauna stoves fired by natural wood logs.

Other sections of Part 2 will be added to cover residential solid fuel burning appliances not included in parts 2-1 to 2-7 and in 2-10.

Subclauses and Figures which are additional to those in EN 16510-1:2022 are numbered starting with 1001. Annexes which are additional to those in EN 16510-1:2022 are numbered starting with JA.

This document is applicable to multi-firing sauna stoves for natural wood logs (in which the heating of stones are separated from and indirectly heated by the fire and the flue gases and which may be re-fuelled with several fuel loads).

The intended use of the appliances is space heating in residential buildings. The space heated is sauna room which is heated higher-than-normal room temperature for wellbeing and bathing purposes, for short period of time.

These multi-firing sauna stoves may be supplied either as an assembled appliance or as a manufacturer’s pre-designed unit consisting of prefabricated components designed to be built on site in accordance with the manufacturer’s specified assembly instructions.

These appliances can burn the following solid fuels as specified:

— wood logs;

This document is not applicable to:

— appliances that are mechanically fed

— appliances with fan assisted combustion air

— single-firing heat storage sauna stoves, in which the stones are directly heated by the fire and the flue gases, which pass through them

— one off installations

— appliances incorporating a boiler or connected to a water system

This document specifies procedures for assessment and verification of constancy of performance (AVCP) of characteristics of multi firing sauna stoves.

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

For the purposes of this document, the terms and definitions given in EN 16510-1:2022 and the following 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/

3.14

EN 16510-1:2022 definition 3.14 is replaced with following:

batch charge

proportion of the test load as declared in the operating manual that can be added at specified intervals during the test period of the performance test at nominal heat output

3.1001

sauna stove

stove that has a fully enclosed firebox with a firedoor which is normally closed, that distributes heat by radiation and/or convection and is also fitted with stones or other heat retaining material onto which water is poured to produce hot steam/vapour that rises from the hot sauna stones, and that may also provide hot water for washing when fitted with an optional open water vessel

3.1002

multi-firing sauna stove

sauna stove in which the stones are separated from and indirectly heated by the fire and the flue gases and which may be refuelled with several successive fuel loads also during sauna bathing

3.1003

test load

mass of test fuel declared in the operating instructions for the burning period

NOTE 1 to entry: The test load can be added as batch charges if this is indicated in the multi-firing sauna stove instructions.

3.1004

burning period

period when test load is burned in multi-firing sauna stove

Some appliances with an upper outlet may be able to carry the load of a chimney. The max. load the appliance may carry shall be specified in the appliance installation instructions. The performance of the appliance in relation to the ability to carry a chimney shall be determined in accordance A.4.10.4 of this document.

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).

The performance of the appliance in relation to protection of combustible materials shall be determined in accordance with A.4.10.4 and A.2.1001, Figure A.1005 of this document. The protection measure(s) as specified shall not lead to an excess of the more than 65 K above ambient room temperature at the hottest point of any adjacent floor, or 140 K above ambient room temperature at the hottest point of any adjacent walls, ceiling or other structure constructed of combustible materials.

If necessary, the distances are increased until the temperature measured is below this value and the specification of the protection measures needs to be adapted accordingly.

When tested in accordance with A.4.10 and A.2.1001 of this document, the protection measure(s) as specified according to Table 1 shall be given as minimum distance to combustibles and if appropriate as material type and thickness of protective insulation material.

The protection measures as specified shall be given in [mm] or [cm] as an integer according to EN 16510-1:2022, Table 22, no. 33, 34, 35, 36, 37, 38, 39 and 41 (d_R, d_S, d_C, d_P, dF, d_L, d_B, s). Minimum distance to adjacent combustible materials on side (d_PS) will be given in [mm] or [cm] in appliances’ technical datasheet and data plate.

Table 1 — Protection of combustible materials

The performance of the appliance in relation to carbon monoxide emission at nominal heat output shall be determined in accordance A.4.7 of this document and with EN 16510-1:2022, 6.3.2.

The CO value if specified at nominal heat output is to be given in [mg/m3] as an integer according to EN 16510-1:2022, Table 22, no. 17 (COnom (13 % O2)).

The performance of the appliance in relation to nitrogen oxides emissions at nominal heat output shall be determined in accordance with A.4.7 of this document and EN 16510-1:2022, 6.3.3.

The NOx value if specified at nominal heat output is to be given in [mg/m3] as an integer according to EN 16510-1:2022, Table 22, no. 20 (NOxnom (13 % O2)).

The performance of the appliance in relation to organic gaseous compounds emission at nominal heat shall be determined in accordance with A.4.7 of this document and EN 16510-1:2022, 6.3.4.

The OGC value if specified at nominal heat output is to be given in [mg/m3] as an integer according to EN 16510-1:2022, Table 22, no. 23 (OGCnom (13 % O2)).

The performance of the appliance in relation to particulate matter emissions at nominal heat output shall be determined in accordance with A.4.7 of this document and EN 16510-1:2022, 6.3.5.

The particulate matter value if specified at nominal heat output is to be given in [mg/m3] as an integer according to EN 16510-1:2022, Table 22, no. 26 (PMnom (13 % O2)).

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.

The performance of the appliance in relation to flue gas outlet temperature at nominal heat output shall be determined in accordance with A.4.7 of this document and 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 (Tsnom).

The performance of the appliance in relation to the minimum flue draught at nominal heat output shall be determined in accordance with A.4.7 of this document and EN 16510-1:2022, 6.5.

For nominal heat output the flue static pressure shall be kept within (12 ± 2) Pa in all power ranges. Where this flue draught value of 12 Pa needs to be exceeded in order to obtain the declared specified nominal heat output, the required flue draught shall be clearly stated in the appliance's installation instructions.

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 (pnom).

The performance of the appliance in relation to the flue gas mass flow at nominal heat output shall be determined in accordance with A.4.7 of this document and 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 (ϕf,g nom).

The performance of the appliance in relation to the flue gas temperature (mean value) at safety test shall be determined in accordance with A.4.10.4 of this document.

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.

The performance of the appliance in relation to space heat output at nominal heat output shall be determined in accordance with A.4.7 of this document.

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 of this document).

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 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.

The performance of the appliance in relation to water heat output if existing at nominal heat output is according to the scope not applicable as this document does not apply to appliances with water-bearing parts or connection to a water system.

The performance of the appliance in relation to efficiency at nominal heat output shall be determined in accordance with A.4.7 of this document.

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 (ηnom).

The performance of the appliance in relation to electric power consumption at nominal heat output shall be determined in accordance with A.4.7 of this document and 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 (elmax).

The performance of the appliance in relation to standby mode power consumption at standby mode (where appropriate) shall be determined in accordance with A.4.7 of this document and 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 (elSB).

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 2.

Table 2 — Elements for the environmental sustainability

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.

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).

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.

The proper operation of the appliance in relation to the general stresses to materials and construction elements is to be tested in accordance with A.4.7, A.4.10 of this document and EN 16510-1:2022, 4.4.1 and 4.4.2.

As the scope of this document clearly states that appliances are not fitted with an integral boiler or heat exchanger. The proper operation of the appliance’s integral boiler or heat exchanger is not relevant.

The prevention of the risk of burning fuel falling out of the appliance is to be tested in accordance with A.4.10.3 of this document and EN 16510-1:2022, 5.2.

The rise of the temperature above ambient temperature in the fuel storage is to be tested in accordance with A.4.7 and A.4.10 of this document and EN 16510-1:2022, 5.4. This rise of the temperature shall not exceed 65 K.

The rise of the temperature above ambient temperature of the operation components is to be tested in accordance with A.4.7 of this document and 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.

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.

The prevention of possible spillage of flue gases is to be tested in accordance with EN 16510-1:2022, 5.2 for appliances intended for open operation.

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.

The safety of the flueways especially in relation to cleanability is to be tested in accordance with EN 16510-1:2022, 4.4.5.

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.

If a bottomgrate is fitted its safety especially in relation to cleanability is to be tested in accordance with EN 16510-1:2022, 4.4.8.

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.

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.

The strength and leak tightness of integrated boiler shells is not applicable to this specific type of appliances. According to the scope, this document not applicable for appliances incorporating a boiler or connected to a water system.

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 may be carried out on the basis of testing (including sampling), calculation, tabulated values or descriptive documentation of the product and

— the applicable factory production control.

When the intention is to declare any performance related to characteristics included in Annex ZA of this standard this shall be carried out on the basis of testing (including sampling), calculation, tabulated values or descriptive documentation of the product, in accordance with clause 'characteristics'.

Assessment previously performed in accordance with the provisions of this document may be considered provided that this assessment was made to the same or a more rigorous assessment method, under the same AVCP system on the same product or products of similar design, construction and functionality, such that the results are applicable to the product in question.

For the purposes of assessment, the products may be grouped into families, where it is considered that the results for one or more characteristics from any one product within the family are representative for that same characteristic for all products within that same family (see EN 16510-1:2022, Annex G).

Products may be grouped into different families for different characteristics.

In addition, the determination of the product type shall be

— carried out for all characteristics included in the standard for which it is intended to declare the performance:

— on first application of this standard, or

— at the beginning of the production of a new or modified residential solid fuel burning appliance, unless a member of the same product family, or

— at the beginning of a new or modified method of production, where the modification may affect the stated properties;

— repeated for the characteristic(s) in question, whenever a change occurs in the residential solid fuel burning appliance design, in the raw material(s) or in the supplier of the components, and/or in the method of production (subject to the definition of a family), which may affect significantly the performance in relation to one or more of the characteristics;

Where kit components are used whose performance in relation to their characteristics has already been determined on the basis of assessment methods of other harmonized technical specifications and those components bear CE marking in accordance with those harmonized technical specifications, these performances do not need to be re-assessed, if the intended use and the assessment methods of this standard correspond to previously used. The specifications of these components shall be documented.

The samples multi-firing sauna stove to be tested/assessed shall be in accordance with Table 3.

Table 3 — Number of samples to be tested and assessment criteria

General

An FPC system shall be established, documented, operated and maintained to ensure that the products placed on the market comply with the declared performance in relation to the essential characteristics.

The FPC system shall consist of procedures, regular inspections and tests and/or assessments and the use of the results to control raw and other incoming materials or components, equipment, the production process and the product.

All the elements and provisions shall be documented in a systematic manner in the form of written policies and procedures.

The responsibility, authority and the relationship between personnel that manages, performs or verifies work affecting constancy of the performance of the product, shall be defined.

The qualification and competence (e.g. on the basis of education, training, skills, or experience) of personnel performing tasks affecting the assessment and verification of constancy of performance of the product shall be recorded.

Documents defining the factory production control system shall be drawn up and kept up-to-date. Documentation and procedures should be appropriate to the product and production process. The FPC system should achieve an appropriate level of confidence in the constancy of performance of the product. This involves:

a) the preparation of documented procedures and instructions relating to factory production control operations, in accordance with the technical specification to which reference is made;

b) the effective implementation of these procedures and instructions;

c) the recording of these operations and their results;

d) the use of these results to correct any deviations, correct the effects of such deviations, treat any resulting instances of non-constancy and, if necessary, revise the FPC system to rectify the cause of non-constancy of performance.

Equipment

Testing

All weighing, measuring and testing equipment shall be calibrated and regularly inspected according to documented procedures, frequencies and criteria.

Production

All equipment used in the production process shall be regularly inspected and maintained to ensure use, wear or failure does not cause inconsistency in the manufacturing process. Inspections and maintenance shall be carried out and recorded in accordance with the written procedures and the records retained for the period defined in FPC procedures.

Raw materials and components

The specifications of all incoming raw materials and components shall be documented, as shall the inspection scheme for ensuring their compliance.

Traceability and marking

Individual residential solid fuel burning appliances shall be identifiable and traceable with regard to their place of their production.

Written procedures ensuring that processes related to affixing traceability codes and/or markings are inspected regularly shall be maintained.

Product testing and evaluation

General

Procedures to ensure that the performance in relation to the declared characteristics are maintained shall be established. The characteristics, and the means of control, are given in the following subclauses.

The manufacturer shall plan and carry out production under controlled conditions.

For appliance types CA, CM, CC according to 5.1 the minimum frequency of the FPC shall be 1 out of 1000 produced appliances or 1 appliance in 2 years.

Product inspection

The manufacturer shall establish and maintain documented procedures for in-process, final inspection and testing, as appropriate to the product type, to ensure that the specified performances of the stated product’s characteristics are maintained.

Materials and components check

At least the following product characteristics, for the respective materials and components, their criteria and means of control shall be included in the factory production control scheme:

a) materials of construction:

— type – composition/specifications,

— thickness,

— dimensions,

— finish;

b) insulation material:

— specification of insulation material,

— density value – thermal conductivity;

c) seals and sealing materials:

— type – including identification or composition, when a supplier’s declaration is not available,

— dimensions.

A supplier's declaration for material type and properties is accepted, provided that the supplier has an appropriate factory production control system to ensure the adequacy, consistency and accuracy of the material type and properties.

Manufacturing checks on construction and dimensions

Construction and dimensions of critical parts of the appliance shall be confirmed during the manufacturing and/or on completion as follows:

a) flue gas outlet;

b) flueways;

c) ashpan;

d) bottomgrate;

e) air supply – thermostat, manual control, inlet size, etc.;

f) control of flue gas (damper);

g) charging doors;

h) flue bypass;

i) front firebars;

j) combustion chamber construction;

k) convection system.

Other checks

At least the following checks shall be carried out during the manufacturing process:

a) sealing of components to avoid leakage;

b) fitment of moving/interconnecting parts;

Additional checks for the production control of roomsealed appliances

Determination of a correction factor for production control of roomsealed appliances

The following correction factor k shall be calculated on the basis of the results of the leak tightness during the type test:

(1)

with:

If the calculation leads to a correction factor less than 1, then k is assumed to be 1 for the purpose of production control.

By means of the correction factor and the calculated average CO-emission according EN 16510-1:2022, 6.3.2 the highest leak tightness possible shall be found for the company’s production control according to A.4.7 of this document.

Production control of roomsealed appliances

The FPC test for leak tightness shall be carried out for every single room sealed appliance (types CA, CM, CC).

The correction factor k according to Formula (1) and the determined tightness (Lvtprod) of the appliance shall be used to calculate the (theoretical) tightness (Lntprod) after mechanical and thermal load.

NOTE A mechanical and thermal test is not necessary for production control.

The leak tightness (Lvtprod) of the appliance shall be determined at a static overpressure of 10 Pa.

The leak tightness (Lntprod) of the appliance is calculated according to Formula (2):

(2)

with:

The so calculated leak tightness is used to check if the requirement of EN 16510-1:2022, 5.9 is fulfilled for all appliances produced.

Minutes about the test shall be taken down which shall include the following indications:

— manufacturer;

— type and production number of the appliance;

— test overpressure in Pa;

— test result (product of the calculated leakage and the CO-value of the type test) and

— location and date of the test as well as name of the tester.

Initial inspection of factory shall be carried out when the production process has been finalized and in operation. The factory documentation shall be assessed to verify that environmental sustainability company specific data is correct and representative.

During the inspection it shall be verified that all resources necessary for the collection of environmental sustainability data in relation to the product characteristics to be declared by the manufacturer are in place and correctly implemented.

All locations where environmental sustainability company specific data is collected shall be assessed to verify that the above conditions are in place and implemented. If the environmental sustainability company specific data covers more than one product, production line or production process, and it is verified that the general provisions are fulfilled when assessing one product, production line or production process, the assessment of the general provisions does not need to be repeated when assessing the environmental sustainability company specific data for another product, production line or production process.

All assessments and their results shall be documented in the initial inspection report.

Environmental sustainability assessment shall be validated. Validation shall include a review of the determination of the performance according to 6.2.2 for the characteristics related to environmental sustainability.

The records of input values and assumptions shall be reviewed to validate that they correspond to the product-type.

The correct application of EN 16510-1:2022, Clause 8 and the specific provisions in this document shall be reviewed to validate that they are properly used.

The process and any software used for the assessment shall be reviewed to validate that the results are consistent and correct and provide conservative results in case of high variability of input values or modelling options.

1. 
   (normative)
   
   Test methods
   1. Test environment

EN 16510-1:2022, A.1, A.1.1, A.1.2 and A.1.3, shall be applicable with following modifications and addition of new clause A.1.1001.

• • 1. Ambient room temperature

EN 16510-1:2022 A.1.1 shall be applicable with following addition.

For A.4.10.4 safety tests the ambient room temperature shall be measured at a distance of 1 m away from the centre of the air inlet of the sauna test room and in a position not influenced by any heat source.

• • 1. Sauna test room internal temperature

The sauna test room temperature shall be measured at a point located 300 mm below the centre of the ceiling in the sauna test room as detailed in A.2.1001.

• 1. Test assembly

EN 16510-1:2022, A.2, A.2.1, A.2.2, A.2.3, A.2.4, shall be applicable with following modification, and with addition of subclause A.2.1001. EN 16510-1:2022 A.2.5 is not applicable.

• • 1. General

EN 16510-1:2022, A.2.1 is replaced with following:

For A.4.7 the test assembly shall consist of the test appliance installed in accordance with the appliance’s installation instructions into a trihedron, as specified in EN 16510-1:2022, A.2.2. CO2-concentration is used for the detection of the end of the cycle.

The appliance shall be positioned so that the sides facing the trihedron walls are at the minimum specified distance from combustible materials.

For A.4.10.4 the test assembly shall consist of the test appliance installed in accordance with the appliance installation instructions into a sauna test room as specified in A.2.1001.

For A.4.10.4 the appliance shall be positioned in accordance with the installation instructions so that the sides facing the walls are at the manufacturer’s minimum declared distance from combustible materials. Sauna test room size shall be set to the minimum volume specified.

Where the appliance can be installed with a rear- or top outlet connection to the chimney, the appliance shall be tested on the top outlet. A measurement section, constructed in accordance with EN 16510-1:2022, A.2.3, shall be provided with means for determining the flue gas temperature in accordance with EN 16510-1:2022, A.2.3.2, the flue gas composition in accordance with EN 16510-1:2022, A.2.3.3 and the applied flue draught in accordance with EN 16510-1:2022, A.2.3.4.

The appliance flue gas outlet shall be connected by means of an un-insulated flue gas connector and an insulated flue gas adaptor to the measurement section in accordance with EN 16510-1:2022, A.2.4.

The flue gases shall be extracted from the top of the measurement section and a means of adjustment shall be provided to enable a constant flue draught as specified in the relevant test procedures to be maintained in the measurement section (e.g. by an extraction fan).

NOTE 1 Examples of typical installations for a free-standing appliance into the trihedron are given in EN 165101:2022, Figures A.3 and A.4.

NOTE 2 Examples of typical installations for sauna stove into the test sauna room are given in figures A.1001 and A.1002

Key

NOTE The flue gas connector goes through an opening in the sauna test room ceiling and is insulated. Only 330 mm is uninsulated.

Figure A.1001 — Example of installation of an appliance with vertical flue outlet in the sauna test room

Key

NOTE The horizontal flue outlet goes through the side wall of sauna test room and is insulated in the wall.

Figure A.1002 — Example of installation of an appliance with horizontal flue outlet in the sauna test room

• • 1. Measurement section

EN 16510-1:2022, A.2.3, A.2.3.1, A.2.3.2, A.2.3.3, A.2.3.4, A.2.3.5 shall be applicable with following modification.

• • • 1. Safety distance to the appliance’s front measurement

EN 16510-1:2022, A.2.3.5 is replaced with following

The temperature rises in front and free side of the appliance shall be measured by movable wooden rod (according to Figure A.1003). The rod shall have dimensions of (20 ± 2) mm by (20 ± 2) mm and be of sufficient length to extend at least 400 mm above the highest point of the stove. The rod is placed at the minimum specified distance of sauna room bench construction.

For measurement of the floor temperature in the radiation area in front of the appliance, the floor of the sauna test room shall be such as to be able to determine the hottest point on the floor in the radiation area in front of the appliance.

Key

Figure A.1003 — Wooden rod to measure temperatures inside the sauna test room in front and from sides of the appliance to determine safety distances for sauna room bench constructions

• • 1. Sauna test room

The sauna test room shown is shown in Figure A.1004 and has adjustable dimensions. The ceiling height can be adjusted to 1 900 mm, 2 100 mm or 2 300 mm and depends upon the minimum vertical distance specified. The width shall be 2 500 mm and the length shall be adjustable by moving one of the walls. If a smaller sauna room is required, a partition wall having a length of 1 200 mm shall be installed.

The walls, ceiling and floor of the sauna test room are made of plywood approximately 20 mm thick. The walls and the ceiling are insulated using insulation having a thermal resistance of 1,875 m²K/W to 2,5 m²K/W. The floor shall be installed 30 mm above the supporting surface.

The sauna test room shall be ventilated by ambient air of the test laboratory passing through an inlet opening in the fixed wall. The opening shall be at floor level and have dimensions of 150 mm by 150 mm. The opening can be moved in the horizontal direction so that it shall be located symmetrically behind the sauna stove. An air outlet having approximately the same area shall be positioned in the opposite wall 300 mm below the ceiling and at least 1 000 mm from the fixed wall. Forced ventilation shall be used to provide six air changes per hour.

The maximum surface temperatures of the walls and ceiling shall be determined. The floor temperature under the sauna stove shall also be measured if it is claimed that the sauna stove can be assembled on a combustible base.

These maximum surface temperatures shall be measured using calibrated equipment meeting the accuracy requirements specified in EN 16510-1:2022, A.3. The position of the measurement points shall be as illustrated in EN 16510-1:2022, Figure A.8. However, only sufficient number of those measurement points in and around the hottest zone need to be fitted with calibrated thermocouples and used for measurement purposes, provided it is ensured that the maximum surface temperature achieved shall be recorded. Each thermocouple shall be secured so that its junction is level with the sauna test room surface as illustrated in EN 16510-1:2022, Figure A.9.

Other measurement equipment similar to thermocouples can be used provided it is ensured that the actual maximum surface temperatures of the sauna test room walls, ceiling and floor are measured and recorded and that the equipment used is calibrated such that it meets the accuracy requirements specified in EN 16510-1:2022, A.3.

Temperature rises in front and free side of the sauna stove shall be measured by a movable wooden rod placed vertically on the floor. The rod shall have dimensions of (20 ± 2) mm by (20 ± 2) mm and be of sufficient length to extend at least 400 mm above the highest point of the stove. The distance between the rod and the heater shall be the minimum distance from combustibles declared in the installation instructions or marking. The wooden rod shall be as shown in Figure A.1003.

Key

Figure A.1004 — example of sauna test room

Key

Figure A.1005 —Example multi firing sauna stove in test sauna room and distances to combustible material to be measured (regardless of rear or top outlet)

• 1. Measurement equipment

EN 16510-1:2022, A.3, shall be applicable.

• 1. Test procedures

EN 16510-1:2022, A.4.1, A.4.2, A.4.3, A.4.4, A.4.6, A.4.10 shall be applicable with following modification. EN 16510-1:2022, A.4.5, A.4.8 and A.4.9 are not applicable.

• • 1. Appliance installation

EN 16510-1:2022 A.4.1, A.4.1.1, A.4.1.2, A.4.1.3 shall be applicable with following modifications.

• • • 1. Appliance installation procedure

EN 16510-1:2022, A.4.1.3 is replaced with following:

The appliance shall be installed into the test assembly appropriate to the appliance type as specified in A.2.1 of this document, following the appliance installation instructions, and the appliance flue gas outlet shall be connected to the measurement section, as specified in EN 16510-1:2022, A.2.4.

If the appliance is supplied in individual parts, the manufacture’s specifications, as given in the installation instructions, shall be followed during assembly.

For appliances with a rear flue gas outlet, the flue gas connector shall pass through the trihedron or sauna test room wall. The hole around the flue gas connector shall be filled with insulating material (see EN 16510-1:2022, Figure A.6).

Where a flue draught regulator is fitted between the firebed and the flue gas outlet then, for the performance test at nominal heat output, either the regulator is removed and the opening sealed with a suitably sized solid plate or the regulator itself is sealed e.g. with heat resistant tape so as to avoid the ingress of air through the regulator opening.

• • 1. Fuel load and basic firebed

EN 16510-1:2022, A.4.2 shall be applicable with addition of new Clause A.4.2.1001. EN 16510-1:2022, A.4.2.1 and A.4.2.2 are not applicable.

• • • 1. Calculation of batch charges of test load

The test load is defined in the user instructions. Test load can be burned in separate batch charges, but any of the batch charges of the test load cannot be smaller than 20 % of the test load. Test load can include ignition batch charge which shall not be bigger than any other batch charge.

Test load can consist of one batch charge, then special rules defined A.4.7 must be taken in account for emission and performance measurement.

The minimum fuel burning period for one batch charge shall not be less than 30 minutes. The slope formed by the test load shall not obstruct, even partially, any flue.

• • 1. Flue gas losses

EN 16510-1:2022, A.4.4, A.4.4.1, A.4.4.2 and A.4.4.3 shall be applicable with the following modification(s).

• • • 1. Composition of the flue gas

EN 16510-1:2022, A.4.2.2 is replaced with following:

Measure the concentration of the combustion product and emissions (CO₂ or O₂, CO, NO_x and OGC), either continuously or at intervals not exceeding 30 s using calibrated instruments, meeting the uncertainty of measurement requirements specified in EN 16510-1:2022 Table A.1.

Determine the mean values of concentration of the products in the dry flue gas as specified in EN 16510-1:2022, A.6 and in EN 16510-1:2022 Annexes D and E. Measure particulate matter in accordance with EN 16510-1:2022 Annex F and A.4.7 of this document. Two burning periods are considered as mean value for composition of flue gases accordance with A.4.7. The tests on the emissions as well as on efficiency are carried out burning the specified test fuels representing the recommended fuels listed in the operating instructions.

• • 1. Performance test at nominal heat output

EN 16510-1:2022, A.4.7, A.4.7.1 and A.4.7.3 shall be applicable with the following modification(s). EN 16510-1:2022, A.4.7.2 is not applicable.

• • • 1. General

EN 16510-1:2022, A.4.7.1 is replaced with following:

For all the following tests, the measurement section according to EN 16510-1:2022 Figures A.10, A.11, A.12 and A.13 is used.

The test period of performance test at nominal heat output shall consist of two separate burning periods.

All performance data defined in clauses 4.7 and 4.8, shall be measured from the ignition to the end of the burning period. Two separate burning periods shall be needed for defining the overall mean values. Method to evaluate emissions defined in clauses 4.3, 4.4, 4.5 and 4.6 are described in A.4.7.3.

At the start of burning period the appliance shall be in room temperature conditions. Burning period starts by the procedure described in A.4.7.3.

Observe the static pressure throughout the burning period and, if necessary, adjust the applied flue draught as detailed in 4.7.3 of this document.

The tests shall be carried out burning natural wood logs listed in EN 16510-1:2022 Annex B.

The test load and the refuelling interval(s) and/or the number and mass of batch charges used in burning period shall be as specified at user instructions in accordance with A.4.2.1001. Any batch charge in burning period shall not be less than 20 % of the total fuel loading. The test load may be burned also as one batch charge and then special rules for emission measurement applies. The last batch charge of the test load shall be added less than 3 hours from the start of fuel ignition.

• • • 1. Test period

EN 16510-1:2022 A.4.7.3 is replaced with following:

Test shall be carried out by the test load specified in the user instructions and considering A.4.2.1001.

Start the flue gas extraction system and adjust the applied draught so that the static pressure in the measurement section is set to the normal draught for the appliance according 4.7.3. Measure and record starting from ignition the temperature and the composition of flue gas as described in A.4.4.

Burning period can include ignition batch charge defined in A.4.2.1001. If the ignition batch charge is used, it shall not be bigger than any other batch charge of the test load. Ignite the appliance as defined in user instruction. The duration of the ignition batch charge shall be sufficient to ensure that normal working conditions are reached before the rest of the batch charge(s) are added.
Evaluation of emissions of combustion products defined in 4.3, 4.4 and 4.5 begins from the first additional batch charge (or the first batch charge after the ignition batch charge, if ignition batch charge is specified). Performance data defined in Clauses 4.7 and 4.8 are evaluated from the beginning of the burning period including ignition batch charge. Mean of the measured results of each valid batch charge cycle(s) are taken as result for one burning period.

Note 1: one batch charge cycle is the period from reloading until adding criteria is reached or the last batch charge’s burning period ending criteria is reached.

Evaluation of PM emissions defined in 4.6 follow table A.1001

When ignition batch charge according to A.4.2.1001 and minimum two additional batch charges are specified, total three PM samples shall be collected. Start taking the PM sample from the batch charge following the ignition batch charge; this applies to both burning periods. The third sample shall be taken from any following batch charge after the first PM sampling of the two burning periods has started. Mean of three samples is calculated for the (PM) emission value.

Note 2: this is explained in table A.1001, case 1.

When ignition batch charge according to A.4.2.1001 and one additional batch charges are specified, total two PM samples shall be collected. Start taking the PM sample from the batch charge following the ignition batch charge; this applies to both burning periods. Mean of two samples is calculated for the (PM) emission value

Note 3: this is explained in table A.1001 case 1.

When only one batch charge is specified or no ignition batch charge according to A.4.2.1001 is defined, the evaluation of emissions defined in 4.3 - 4.6 shall start right after CO2 has risen above 4 % after ignition (of first batch charge or the only batch charge). If more than one batch charge without ignition batch charge according to A.4.2.1001 is specified, third PM sample shall be taken from any following batch charge after the first PM sampling. This applies for both burning periods.

Note 4: these are explained in table A.1001 case 2 and case 3.

Table A.1001 — PM sampling for multi firing sauna stove. Maximum of 3 samples are taken as mean result from 2 burning periods.

It is permissible at the start of the batch charge adding to manually open the air intake(s) for up to a maximum period of 3 min in order to achieve proper ignition (this is to be carried out by a single action setting the controls to a defined ignition position). After this maximum 3-min period the air intake(s) shall be reset to give the specified nominal heat output. Then continue operating the appliance at the nominal heat output. This maximum 3-min period is to be included as part of the burning period duration and shall be regarded for efficiency and emission determination. Any other operation such as poking, raking or leaving the door ajar is also allowed during the first 3 min.

Measure and record the temperature of the trihedron test hearth and the walls either continuously or at regular intervals of not more than 1 min to ensure that the maximum temperatures achieved are recorded.

The adding intervals of the batch charges are defined by user instruction or specified CO₂ % level with a tolerance of ±0,5 vol%. The burning period shall end according to criterion of CO₂ % is 4 % or defined CO₂ % adding criteria if it is less than 4 %. Record the duration of the burning period.

• • 1. Safety tests

EN 16510-1:2022, A.4.10, A.4.10.1, A,4.10.2, A.4.10.4, are applicable with following modifications. EN 16510-1:2022, A.4.10.3 and A.4.10.5, A.4.10.6, A.4.10.7 are not applicable.

• • • 1. Temperature safety tests

EN 16510-1:2022, A.4.10.4, A.4.10.4.2 are applicable with the following modification(s). EN 16510-1:2022, A.4.10.4.1 is not applicable.

• • • • 1. Temperature safety test for woodburning and multifuel appliances

EN 16510-1:2022 A.4.10.4.2.1 are applicable with following modifications

General

EN 16510-1:2022 A.4.10.4.2.1 is replaced with following:

This test shall be conducted in the smallest size sauna test room as specified in A.2.2 and shall consist of the following two parts:

— an ignition and pre-test period(s),

— a test period.

All controls, except those used only for start-up purposes, shall be set in a position that allows the highest heat output to be achieved.

Ignition and test period

EN 16510-1:2022 A.4.10.4.2.2 is replaced with following:

Start the flue gas extraction system and adjust the applied draught to give a static pressure within ± 2 Pa of the flue draught used in the performance test at nominal heat output.

Sauna test room internal temperature is measured from location defined in A.1.1001.

Load the appliance with sufficient test fuel to ensure ignition of the fuel in accordance with the appliance manufacturer's instructions. Begin the test period once the sauna test room internal temperature has first exceeded 60 °C and then levelled out at 60 °C. This period is the pre-test period.

The test period shall directly follow the ignition and pre-test period once the sauna test room interna temperature has levelled out at 60 °C. Sufficient mass of test fuel shall be added to fill the appliance to maximum and the air controls shall be set to the maximum opening to give the highest burning rate. The flue draught shall be increased to 3 Pa greater than that used for the nominal heat output test and shall be maintained within Pa of this value.

NOTE Filling the appliance to its maximum means filling up to the upper level of the firebox opening in the configuration given in the operating instructions.

Observe the static pressure and adjust the applied flue draught, if necessary, to keep the static pressure within Pa of the appropriate test value.

Measure and record, either continuously or at regular intervals of not more than 1 minute, the following parameters:

— The temperatures on the ceiling and the walls (and floor if necessary) of the sauna test room,

— The temperature in the fuel storage container (if fitted),

— The wooden rod temperature in front of and at the sides of the sauna stove.

The sauna test room internal temperature shall rise to at least 110 °C. If the first filling of wood is not sufficient to achieve this temperature, then further amounts of wood shall be added until this temperature is reached.

End the test period when the reading of the CO₂ level in the flue gas after the last fuel addition reaches 4,0 %. Record the maximum temperatures achieved.

• • 1. Safety tests of roomsealed appliances

EN 16510-1:2022 A.4.11 shall be applicable.

• 1. Test results

EN 16510-1:2022 A.5 fifth paragraph is replaced with following:

From 2 valid burning periods calculate and record the mean flue gas temperature.

• 1. Calculation methods

EN 16510-1:2022, A.6, A.6.1, A.6.2 shall be applicable with following modifications.

• • 1. Formulae

EN 16510-1:2022, A.6.2, A.6.2.1, A.6.2.2, A.6.2.4, A.6.2.5, A.6.2.6, A.6.2.7, A.6.2.8, A.6.2.10 shall be applicable with following modification(s). EN 16510-1:2022, A.6.2.3 is not applicable.

• • • 1. Heat losses and efficiency

EN 16510-1:2022, A.6.2.1, A.6.2.1.1, A.6.2.1.2, A.6.2.1.3, A.6.2.1.4 shall be applicable. EN 16510-1:2022, A.6.2.1.5 and A.6.2.1.6 are not applicable.

• • • 1. Space heat output

EN 16510-1:2022, A.6.2.4 shall be replaced with following:

The space heat output shall be declared as the calculated total heat output in accordance with A.6.2.2.

• 1. Test report

EN 16510-1:2022 A.7 shall be applicable with following additions.

— volume [m³] of the test sauna room used in A.4.10 safety test

— height [mm] of the test sauna room used in A.4.10 safety test

1. 
   (informative)
   
   Relationship of this European Standard with Regulation (EU) No. 305/2011

NOTE When applying this standard as a harmonized standard under Regulation (EU) No. 305/2011, manufacturers and Member States are obliged by this regulation to use this Annex.

• 1. Scope and relevant characteristics

This European Standard has been prepared under standardization request M/577 given to CEN by the European Commission (EC) and the European Free Trade Association (EFTA).

When this European Standard is cited in the Official Journal of the European Union (OJEU), under Regulation (EU) No 305/2011, it shall be possible to use it as a basis for the establishment of the Declaration of Performance (DoP) and the CE marking, from the date of the beginning of the co-existence period as specified in the OJEU.

Regulation (EU) No 305/2011, as amended, contains provisions for the DoP and the CE marking.

Table ZA.1.1 — Relevant clauses for multi firing sauna stove for natural wood logs intended for space heating in residential buildings

Table ZA.1.2 — Relevant clauses for multi firing sauna stove for natural wood logs intended for space heating in residential buildings related to environmental sustainability

• 1. System of Assessment and Verification of Constancy of Performance (AVCP)

The AVCP systems for multi firing sauna stoves for natural wood logs, as indicated in Table ZA.1.1, can be found in the EC legal act adopted by the EC: decision 1999/471/EC of 1999-06-29 (see OJEU L 184 of 1999-07-17), as amended by 2001/596/EC of 2001-01-08 (see OJEC L 209 of 2001-08-02).

The AVCP system applicable to essential characteristics indicated in Table ZA.1.2, can be found in the EC legal act adopted by the EC: decision 2024/2769 of 2024-05-30.

Micro-enterprises are allowed to treat products under AVCP system 3 covered by this standard in accordance with AVCP system 4, applying this simplified procedure with its conditions, as foreseen in Article 37 of Regulation (EU) No. 305/2011.

• 1. Assignment of AVCP tasks

The AVCP systems for multi firing sauna stoves for natural wood logs as provided in Tables ZA.1.1 and ZA.1.2 is defined in Tables ZA.3.1 and ZA.3.2 resulting from application of the clauses of this or other European Standards indicated therein. The content of the tasks assigned to the notified body shall be limited to those essential characteristics, if any, as provided for in Annex III of the relevant standardization request and to those that the manufacturer intends to declare.

Taking into account the AVCP systems defined for the products and the intended uses the following tasks are to be undertaken by the manufacturer and the notified body respectively for the assessment and verification of the constancy of performance of the product.

Table ZA.3.1 — Assignment of AVCP tasks for multi-firing sauna stoves fired by natural wood logs under system 3

Table ZA.3.2 — Assignment of AVCP tasks for multi-firing sauna stoves fired by natural wood logs under system 3+