EN 12067-2:2022

Safety and control devices for burners and appliances burning gaseous or liquid fuels - Control functions in electronic systems - Part 2: Fuel/air ratio control/supervision of the electronic type

EN 12067-2:2022

Name:EN 12067-2:2022   Standard name:Safety and control devices for burners and appliances burning gaseous or liquid fuels - Control functions in electronic systems - Part 2: Fuel/air ratio control/supervision of the electronic type
Standard number:EN 12067-2:2022   language:English language
Release Date:15-Nov-2022   technical committee:CEN/TC 58 - Safety and control devices for burners and appliances burning gaseous or liquid fuels
Drafting committee:CEN/TC 58/WG 12 - Electronics   ICS number:23.060.40 - Pressure regulators

SLOVENSKI STANDARD
01-februar-2023
Nadomešča:
SIST EN 12067-2:2004
Varnostne in nadzorne naprave za gorilnike in aparate na plin ali tekoča goriva -
Regulacijske in nadzorne funkcije v elektronskih sistemih - 2. del: Regulacija in
nadzor razmerja goriva in zraka za elektronski tip
Safety and control devices for burners and appliances burning gaseous or liquid fuels -
Control functions in electronic systems - Part 2: Fuel/air ratio control/supervision of the
electronic types
Sicherheits- und Regeleinrichtungen für Brenner und Brennstoffgeräte für gasförmige
oder flüssige Brennstoffe - Regel- und Steuerfunktionen in elektronischen Systemen -
Teil 2: Elektronische Gas-Luft-Verbundregel- und Überwachungseinrichtungen
Dispositifs de commande et de sécurité pour les brûleurs et les appareils utilisant des
combustibles gazeux ou liquides - Dispositifs électroniques de régulation - Partie 2 :
Régulation et surveillance du rapport air/combustible de type électronique
Ta slovenski standard je istoveten z: EN 12067-2:2022
ICS:
23.060.40 Tlačni regulatorji Pressure regulators
27.060.20 Plinski gorilniki Gas fuel burners
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12067-2
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 23.060.40; 27.060.20 Supersedes EN 12067-2:2004
English Version
Safety and control devices for burners and appliances
burning gaseous or liquid fuels - Control functions in
electronic systems - Part 2: Fuel/air ratio
control/supervision of the electronic type
Dispositifs de commande et de sécurité pour les Sicherheits- und Regeleinrichtungen für Brenner und
brûleurs et les appareils utilisant des combustibles Brennstoffgeräte für gasförmige oder flüssige
gazeux ou liquides - Dispositifs électroniques de Brennstoffe - Regel- und Steuerfunktionen in
régulation - Partie 2 : Régulation et surveillance du elektronischen Systemen - Teil 2: Elektronische Gas-
rapport air/combustible de type électronique Luft-Verbundregel- und Überwachungseinrichtungen
This European Standard was approved by CEN on 2 October 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12067-2:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Classification . 14
4.1 Classes of control . 14
4.2 Groups of control . 14
4.3 Classes of control functions . 14
4.4 Types of DC supplied controls . 14
5 Test conditions and uncertainty of measurements . 14
6 Design and construction . 15
6.1 General . 15
6.2 Mechanical parts of the control . 16
6.3 Materials . 16
6.4 Gas connections . 16
6.5 Electronic parts of the control . 16
6.6 Protection against internal faults for the purpose of functional safety . 17
6.101 Requirements for using alternative actuators on application level . 20
7 Performance . 20
7.1 General . 20
7.2 Leak-tightness . 20
7.3 Torsion and bending . 20
7.4 Rated flow rate . 21
7.5 Durability . 21
7.6 Performance tests for electronic controls . 21
7.7 Long-term performance for electronic controls . 21
7.8 Data exchange . 23
7.101 Functional requirements. 23
8 Electrical requirements . 26
8.1 General . 26
8.2 Protection by enclosure . 26
9 Electromagnetic compatibility (EMC) . 26
9.1 Protection against environmental influences . 26
9.2 Supply voltage variations below 85 % of rated voltage . 28
9.3 Voltage dips and interruptions . 28
9.4 Supply frequency variations . 28
9.5 Surge immunity test . 28
9.6 Electrical fast transient/burst . 29
9.7 Immunity to conducted disturbances induced by radio frequency fields . 29
9.8 Immunity to radiated fields induced by radio frequency fields. 29
9.9 Electrostatic discharge test . 29
9.10 Power frequency magnetic field immunity test . 29
9.11 Harmonics and interharmonics including mains signalling at AC power port, low
frequency immunity tests . 30
10 Marking, instructions . 30
10.1 Marking . 30
10.2 Instructions . 30
10.3 Warning notice . 32
Annex A (informative) Abbreviations and symbols . 33
Annex B (informative) Leak-tightness tests for gas controls − volumetric method . 34
Annex C (informative) Leak-tightness tests for gas controls − pressure loss method . 35
Annex D (normative) Calculation of pressure loss into leakage rate . 36
Annex E (normative) Electrical/electronic component fault modes . 37
Annex F (normative) Additional requirements for safety accessories and pressure
accessories as defined in 2014/68/EU . 38
Annex G (normative) Materials for pressurized parts . 39
Annex H (normative) Additional materials for pressurized parts . 40
Annex I (normative) Requirements for controls used in DC supplied burners and
appliances burning gaseous or liquid fuels. 41
Annex J (normative)  Method for the determination of a Safety integrity level (SIL) . 42
Annex K (normative) Method for the determination of a Performance Level (PL) . 43
Annex L (informative) Relationship between Safety Integrity Level (SIL) and Performance
Level (PL) . 44
Annex M (normative) Reset functions . 45
Annex N (informative) Guidance document on Environmental Aspects . 46
Annex O (normative) Seals of elastomer, cork and synthetic fibre mixtures . 47
Annex AA (normative) Declaration for sensors, actuators and repeatability . 48
Annex BB (normative) Special requirements for single position feed-back potentiometers
in electromechanical actuators . 52
BB.1 Requirements . 52
BB.2 Endurance test . 52
Annex CC (informative) Overall fuel/air ratio accuracy . 53
CC.1 General . 53
CC.2 Method A: . 53
CC.3 Method B: .
...

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