SIST EN 126:2025

Safety and control devices for burners and appliances burning gaseous fuels - Multifunctional controls for gas burning appliances

EN 13611:2019, Clause 1 is applicable with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for multifunctional controls for burners and appliances burning one or more gaseous fuels, hereafter referred to as ‘MFC’. This document is applicable to MFCs with declared maximum inlet pressures up to and including 50 kPa and nominal connection sizes up to and including DN 150.
Addition:
This document is applicable to MFCs consisting of two or more functions, at least one of which is a mechanical control, as specified in the relevant control standard (see Figure 1).
This document does not apply to MFCs consisting only of electronics (an example is a combination of functions according to EN 298:2022 and EN 1643:2022).
The 4th paragraph of EN 13611:2019, Clause 1 is removed.

Sicherheits- und Regeleinrichtungen für Brenner und Brennstoffgeräte für gasförmige Brennstoffe - Mehrfachstellgeräte für Gasgeräte

EN 13611:2019, Abschnitt 1, gilt mit folgender Änderung und Ergänzung:
Änderung:
Der erste Absatz von EN 13611:2019, Abschnitt 1, wird ersetzt durch:
Dieses Dokument legt die Sicherheits-, Auslegungs-, Konstruktions- und Leistungsanforderungen sowie die Prüfung von Mehrfachstellgeräten für Brenner und Brennstoffgeräte für einen oder mehrere gasförmige(n) Brennstoff(e), nachstehend als „MFC“ bezeichnet, fest. Dieses Dokument gilt für MFCs mit einem angegebenen höchsten Eingangsdruck bis einschließlich 50 kPa und mit Anschlussnennweiten bis einschließlich DN 150.
Ergänzung:
Dieses Dokument gilt für MFCs, die zwei oder mehr Funktionen haben und durch mindestens ein mechanisches Regel- und Steuergerät dargestellt werden und in der jeweiligen RS-Norm festgelegt sind (siehe Bild 1).
Dieses Dokument gilt nicht für MFCs, die ausschließlich aus elektronischen Elementen bestehen (ein Beispiel ist eine Kombination aus Funktionen nach EN 298:2022 und EN 1643:2022).
Der vierte Absatz von EN 13611:2019, Abschnitt 1, entfällt.

Équipements auxiliaires pour brûleurs et appareils utilisant des combustibles gazeux - Équipements multifonctionnels pour les appareils à gaz

L’Article 1 de l’EN 13611:2019 s’applique avec les modifications et ajouts suivants :
Modification :
Le 1er paragraphe de l’EN 13611:2019, Article 1 est remplacé par :
Le présent document spécifie les exigences en matière de sécurité, de conception, de construction et de fonctionnement ainsi que les essais applicables aux équipements multifonctionnels pour les brûleurs et les appareils utilisant un ou plusieurs combustibles gazeux, ci-après désignés par le terme « MFC ». Ce document s’applique aux MFC dont la pression amont maximale déclarée est inférieure ou égale à 50 kPa et dont le diamètre nominal de raccordement est inférieur ou égal à DN 150.
Le 4e paragraphe de l’EN 13611:2019, Article 1 est supprimé.
Ajout :
Le présent document s’applique aux MFC comportant au moins deux fonctions, dont au moins une est une commande mécanique, selon les spécifications des normes d’équipement applicables (voir Figure 1).
Ce document ne s’applique pas aux MFC constitués uniquement d’électronique (par exemple, une combinaison de fonctions conformément à l’EN 298:2022 et à l’EN 1643:2022).

Varnostne in nadzorne naprave za plinske gorilnike in plinske aparate - Večnamenske naprave za nadzor plinskih aparatov

General Information

• Status: Not Published
• Public Enquiry End Date: 19-Aug-2024
• ICS: 23.060.40 - Pressure regulators
• ICS: 23.060.99 - Other valves
• ICS: 27.060.20 - Gas fuel burners
• Technical Committee: PLN - Gas appliances for domestic use
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 21-Jul-2025
• Due Date: 25-Sep-2025
• Directive: 2016/426 - REGULATION (EU) 2016/426 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 9 March 2016 on appliances burning gaseous fuels and repealing Directive 2009/142/EC
• Mandate: M/595 - [C(2023)4789] - Commission Implementing Decision of 20.7.2023 on a standardisation reques as regards gas appliances and fittings in support of Regulation (EU) 2016/426 of the European Parliament and of the Council
• Mandate: M/BC/CEN/89/6 - Standardization request to CEN concerning appliances burning gaseous fuels
• Ref Project: EN 126:2025 - Safety and control devices for burners and appliances burning gaseous fuels - Multifunctional controls

Relations

• Revises: SIST EN 126:2012 - Multifunctional controls for gas burning appliances
• Effective Date: 01-Jul-2024

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 126:2024
01-julij-2024
Varnostne in nadzorne naprave za plinske gorilnike in plinske aparate -
Večnamenske naprave za nadzor plinskih aparatov
Safety and control devices for burners and appliances burning gaseous fuels -
Multifunctional controls for gas burning appliances
Sicherheits- und Regeleinrichtungen für Brenner und Brennstoffgeräte für gasförmige
Brennstoffe - Mehrfachstellgeräte für Gasgeräte
Équipements auxiliaires pour brûleurs et appareils utilisant des combustibles gazeux -
Équipements multifonctionnels pour les appareils à gaz
Ta slovenski standard je istoveten z: prEN 126
ICS:
23.060.99 Drugi ventili Other valves
27.060.20 Plinski gorilniki Gas fuel burners
oSIST prEN 126:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 126:2024
oSIST prEN 126:2024
DRAFT
EUROPEAN STANDARD
prEN 126
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2024
ICS 23.060.40 Will supersede EN 126:2012
English Version
Safety and control devices for burners and appliances
burning gaseous fuels - Multifunctional controls for gas
burning appliances
Équipements auxiliaires pour brûleurs et appareils Sicherheits- und Regeleinrichtungen für Brenner und
utilisant des combustibles gazeux - Équipements Brennstoffgeräte für gasförmige Brennstoffe -
multifonctionnels pour les appareils à gaz Mehrfachstellgeräte für Gasgeräte
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 58.
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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 126:2024 E
worldwide for CEN national Members.

oSIST prEN 126:2024
prEN 126:2024 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Classification. 9
4.1 Classes of control . 9
4.2 Groups of control . 9
4.3 Classes of control functions . 9
4.4 Types of DC supplied controls . 9
5 Test conditions and uncertainty of measurements . 9
6 Design and construction . 9
6.1 General. 9
6.2 MFC based on combination of controls . 9
6.2.1 General. 9
6.2.2 Interaction between controls . 10
7 Performance . 10
7.1 General. 10
7.2 External leak-tightness of the MFC . 11
7.2.1 Requirement . 11
7.2.2 Test . 11
7.3 Thermostat function test . 11
7.4 Internal leak tightness of MFC . 11
8 Electrical requirements . 11
9 Electromagnetic compatibility (EMC) . 11
10 Marking, instructions . 12
10.1 General. 12
10.2 Warning Notice . 12
Annex A (informative) Abbreviations and Symbols . 13
Annex B (informative) Leak-tightness tests for gas controls — volumetric method . 14
Annex C (informative) Leak-tightness tests for gas controls — pressure loss method . 15
Annex D (normative) Calculation of pressure loss into leakage rate . 16
Annex E (normative) Electrical/electronic component fault modes. 17
Annex F (normative) Additional requirements for safety accessories and pressure accessories as
defined in EU Directive 2014/68/EU . 18
Annex G (normative) Materials for pressurized parts . 19
Annex H (normative) Additional materials for pressurized parts . 20
oSIST prEN 126:2024
prEN 126:2024 (E)
Annex I (normative) Requirements for controls used in DC supplied burners and appliances
burning gaseous or liquid fuels . 21
Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) . 22
Annex K (normative) Method for the determination of a Performance Level (PL) . 23
Annex L (informative) Relationship between Safety Integrity Level (SIL) and Performance Level
(PL) . 24
Annex M (normative) Reset functions . 25
Annex N (informative) Guidance document on Environmental Aspects . 26
Annex O (normative) Seals of elastomer, cork, and synthetic fibre mixtures . 27
Annex AA (normative) Automatic water operated gas valve . 28
Bibliography . 30

Figures
Figure 1 — Interrelation of control standards . 5

Tables
Table 1 — Maximum external leakage rates . 11

oSIST prEN 126:2024
prEN 126:2024 (E)
European foreword
This document (prEN 126:2024) has been prepared by Technical Committee CEN/TC 58 “Safety and
control devices for burners and appliances burning gaseous or liquid fuels”, the secretariat of which is
held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 126:2012.
The main changes compared with EN 126:2012 are as follows:
a) alignment with EN 13611:2019;
b) referencing the control standards as shown in Figure 1 in total, instead of referencing these standards
clause by clause;
c) combinations of electronic controls only are excluded.
oSIST prEN 126:2024
prEN 126:2024 (E)
Introduction
This document is intended to be used in conjunction with EN 13611:2019.
EN 13611:2019 recognizes the safety level specified by CEN/TC 58 and is regarded as a horizontal
standard dealing with the safety, construction, performance, and testing of controls for burners and
appliances burning gaseous and/or liquid fuels.
The general requirements for controls are given in EN 13611:2019, and methods for classification and
assessment for new controls and control functions are given in EN 14459:2021. This document (see
Figure 1) specifies multifunctional controls combining two or more control functions, one of which is a
mechanical control function. The requirements for controls are given in the specific control standard.

NOTE This document specifies ‘automatic water operated gas valves’ in Annex AA.
Figure 1 — Interrelation of control standards
EN 13611:2019 should be used in conjunction with the specific standard for a specific type of control (e.g.
EN 88-1:2022+A1:2023, EN 88-2:2022, EN 88-3:2022, EN 125:2022, prEN 126:2024, EN 161:2022,
EN 257:2022+A1:2023, EN 298:2022, EN 1106:2022+A1:2023, EN 1643:2022, EN 1854:2022+A1:2023,
EN 12067-2:2022, EN 16304:2022, EN 16340:2014, EN 16678:2022, EN 16830:2022 and
EN 16898:2022+A1:2023), or for controls for specific applications.
EN 13611:2019 can also be applied, so far as reasonable, to controls not mentioned in a specific standard
and to controls designed on new principles, in which case additional requirements can be necessary.
EN 14459:2021 provides methods for classification and assessment of new control principles.
In addition, this standard covers requirements for the safety related interactions between the different
devices.
Primarily in industrial applications it is common practice to rate the safety of a plant based on values
describing the likelihood of a dangerous failure. These values are being used to determine Safety Integrity
Levels or Performance Levels when the system is being assessed in its entirety.
CEN/TC 58 standards for safety relevant controls do go beyond this approach, because for a certain life
time for which the product is specified, designed, and tested a dangerous failure is not allowed at all.
Failure modes are described and assessed in greater detail.
Measures to prevent from dangerous situations are defined. Field experience over many decades is
reflected in the CEN/TC 58 standards. Requirements of EN 13611:2019 can be considered as proven in
practice.
oSIST prEN 126:2024
prEN 126:2024 (E)
This document refers to clauses of EN 13611:2019 or adapts clauses by stating “with the following
modification”, “with the following addition”, “is replaced by the following” or “is not applicable” in the
corresponding clause.
This document adds clauses or subclauses to the structure of EN 13611:2019 which are particular to this
document. Subclauses which are additional to those in EN 13611:2019 are numbered starting from 101.
Additional Annexes are designated as Annex AA, Annex BB, Annex CC, etc. It should be noted that these
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