EN 14459:2021

SLOVENSKI STANDARD
01-april-2022
Nadomešča:
SIST EN 14459:2016
Varnostne in nadzorne naprave za gorilnike in aparate na plin ali tekoča goriva -
Regulacijske in nadzorne funkcije v elektronskih sistemih - Metode za razvrščanje
in ocenjevanje
Safety and control devices for burners and appliances burning gaseous or liquid fuels -
Control functions in electronic systems - Methods for classification and assessment
Sicherheits- und Regeleinrichtungen für Brenner und Brennstoffgeräte für gasförmige
oder flüssige Brennstoffe - Regel- und Steuerfunktionen in elektronischen Systemen -
Verfahren für die Klassifizierung und Bewertung
Dispositifs de commande et de sécurité pour brûleurs et appareils utilisant des
combustibles gazeux ou liquides - Fonctions de commande des systèmes électroniques
- Méthodes de classification et dévaluation
Ta slovenski standard je istoveten z: EN 14459:2021
ICS:
27.060.01 Gorilniki in grelniki vode na Burners and boilers in
splošno general
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
97.100.01 Grelniki na splošno Heating appliances in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14459
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2021
EUROPÄISCHE NORM
ICS 91.140.40; 97.100.20 Supersedes EN 14459:2015
English Version
Safety and control devices for burners and appliances
burning gaseous or liquid fuels - Control functions in
electronic systems - Methods for classification and
assessment
Dispositifs de commande et de sécurité pour brûleurs Sicherheits- und Regeleinrichtungen für Brenner und
et appareils utilisant des combustibles gazeux ou Brennstoffgeräte für gasförmige oder flüssige
liquides - Fonctions de commande des systèmes Brennstoffe - Regel- und Steuerfunktionen in
électroniques - Méthodes de classification et elektronischen Systemen - Verfahren für die
d'évaluation Klassifizierung und Bewertung
This European Standard was approved by CEN on 24 October 2021.

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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14459:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Classification. 6
4.1 Classes of control . 6
4.2 Groups of control . 6
4.3 Classes of control functions . 6
4.4 Types of DC supplied controls . 6
5 Test conditions and uncertainty of measurements . 6
6 Design and construction . 7
6.1 General. 7
6.2 Mechanical parts of the control . 7
6.3 Materials . 7
6.4 Gas connections . 7
6.5 Electrical parts of the control . 7
6.6 Protection against internal faults for the purpose of functional safety . 7
6.101 Requirements for new control solutions . 7
6.101.1 General . 7
6.101.2 Assessment of the appliance . 7
6.101.3 Translation into control requirements . 8
7 Performance . 8
7.1 General. 8
7.2 Leak-tightness . 8
7.3 Torsion and bending . 8
7.4 Rated flow rate . 9
7.5 Durability . 9
7.6 Performance tests for electronic controls . 9
7.7 Long-term performance for electronic controls . 9
7.8 Data exchange . 9
7.101 Combined apparatus. 9
8 Electrical requirements . 9
8.1 General. 9
8.2 Protection by enclosure. 9
9 Electromagnetic compatibility (EMC) . 9
9.1 Protection against environmental influences . 9
9.2 Supply voltage variations below 85 % of rated voltage . 9
9.3 Voltage dips and interruptions . 9
9.4 Supply frequency variations . 10
9.5 Surge immunity tests . 10
9.6 Electrical fast transient/burst . 10
9.7 Immunity to conducted disturbances induced by radio frequency fields . 10
9.8 Immunity to radiated disturbances induced by radio frequency fields . 10
9.9 Electrostatic discharge test . 10
9.10 Power frequency magnetic field immunity tests . 10
9.11 Harmonics and interharmonics including mains signalling at a. c. power port, low
frequency immunity tests . 10
10 Marking, instructions . 10
10.1 Marking . 10
10.2 Instructions . 10
10.3 Warning notice . 10
Annex A (informative) Abbreviations and symbols . 11
Annex B (informative) Leak-tightness tests for gas controls – volumetric method . 12
Annex C (informative) Leak-tightness tests for gas controls – pressure loss method . 13
Annex D (normative) Calculation of pressure loss into leakage rate . 14
Annex E (normative) Electrical/electronic component fault modes . 15
Annex F (normative) Additional requirements for safety accessories and pressure
accessories as defined in EU Directive 2014/68/EU . 16
Annex G (normative) Materials for pressurized parts . 17
Annex H (normative) Additional materials for pressurized parts. 18
Annex I (normative) Requirements for controls used in DC supplied burners and
appliances burning gaseous or liquid fuels . 19
Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) . 20
Annex K (normative) Method for the determination of a Performance Level (PL) . 21
Annex L (informative) Relationship between Safety Integrity Level (SIL) and
Performance Level (PL) . 22
Annex M (normative) Reset functions . 23
Annex N (informative) Guidance document on Environmental Aspects . 24
Annex O (normative) Seals of elastomer, cork and synthetic fibre mixtures . 25
Annex AA (informative) Example of a risk assessment method . 26
Annex BB (informative) Example of a risk assessment according to method described in
Annex AA . 28
BB.1 General . 28
BB.2 Risks . 28
BB.3 Risk assessment . 28
Annex CC (informa
...