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SLOVENSKI STANDARD
01-december-2022
Nadomešča:
SIST EN 16678:2016
Varnostne in nadzorne naprave za plinske gorilnike in plinske aparate - Samodejni
zaporni ventili za delovni tlak nad 500 kPa do vključno 6300 kPa
Safety and control devices for gas burners and gas burning appliances - Automatic shut-
off valves for operating pressure of above 500 kPa up to and including 6 300 kPa
Sicherheits- und Regeleinrichtungen für Gasbrenner und Gasbrennstoffgeräte -
Automatische Absperrventile für einen Betriebsdruck über 500 kPa bis einschließlich 6
300 kPa
Équipements auxiliaires pour brûleurs à gaz et appareils à gaz - Robinets automatiques
de sectionnement pour pression de service supérieure à 500 kPa et inférieure ou égale à
6300 kPa
Ta slovenski standard je istoveten z: EN 16678:2022
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 16678
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 23.060.40 Supersedes EN 16678:2015
English Version
Safety and control devices for gas burners and gas burning
appliances - Automatic shut-off valves for operating
pressure of above 500 kPa up to and including 6 300 kPa
Équipements auxiliaires pour brûleurs à gaz et Sicherheits- und Regeleinrichtungen für Gasbrenner
appareils à gaz - Robinets automatiques de und Gasbrennstoffgeräte - Automatische
sectionnement pour pression de service supérieure à Absperrventile für einen Betriebsdruck über 500 kPa
500 kPa et inférieure ou égale à 6300 kPa bis einschließlich 6 300 kPa
This European Standard was approved by CEN on 8 August 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 16678:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Classification . 10
4.1 Classes of control . 10
4.2 Groups of control . 10
4.3 Classes of control functions . 10
4.4 Types of DC supplied controls . 10
5 Units of measurement and test conditions . 10
6 Construction requirements . 10
6.1 General . 10
6.2 Mechanical parts of the control . 10
6.3 Materials . 12
6.4 Gas connections . 13
6.5 Electrical parts of the control . 14
6.6 Protection against internal faults for the purpose of functional safety . 14
6.101 Pneumatic and hydraulic actuating mechanisms . 14
7 Performance . 15
7.1 General . 15
7.2 Leak-tightness . 15
7.3 Torsion and bending . 15
7.4 Rated flow rate . 16
7.5 Durability . 16
7.6 Performance tests for electronic controls . 17
7.7 Long-term performance for electronic controls . 17
7.8 Data Exchange . 17
7.101 Closing function . 17
7.102 Closing force . 18
7.103 Delay time and opening time. 18
7.104 Closing time . 18
7.105 Sealing force . 19
7.106 Closed position indicator switch . 19
7.107 Endurance . 20
8 Electrical requirements . 21
8.1 General . 21
8.2 Protection by enclosure . 21
8.101 Switches . 21
8.102 Plug connections . 22
8.103 Power saving circuits . 22
9 Electromagnetic compatibility (EMC) . 22
9.1 Protection against environmental influences . 22
9.2 Supply voltage variations below 85 % of rated voltage . 23
9.3 Voltage dips and interruptions . 23
9.4 Supply frequency variations . 23
9.5 Surge immunity tests . 23
9.6 Electrical fast transient/burst . 23
9.7 Immunity to conducted disturbances induced by radio frequency fields . 23
9.8 Immunity to radiated disturbances induced by radio frequency fields . 23
9.9 Electrostatic discharge tests . 23
9.10 Power frequency magnetic field immunity tests . 23
9.11 Harmonics and interharmonics including mains signalling at a. c. power port, low
frequency immunity tests . 23
10 Marking, instructions . 23
10.1 Marking . 23
10.2 Instructions . 24
10.3 Warning notice . 25
Annex A (informative) Abbreviations and Symbols . 26
Annex B (informative) Leak-tightness test for gas controls – volumetric method . 27
Annex C (informative) Leak-tightness test for gas controls – pressure loss method . 28
Annex D (normative) Calculation of pressure loss into leakage rate . 29
Annex E (normative) Electrical/electronic component fault modes . 30
Annex F (normative) Additional requirements for safety accessories and pressure
accessories as defined in EU Directive 2014/68/EU . 31
Annex G (normative) Materials for pressurized parts . 32
Annex H (normative) Additional materials for pressurized parts . 33
Annex I (normative) Requirements for controls used in DC supplied gas burners and
appliances burning gaseous or liquid fuels . 34
Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) . 35
Annex K (normative) Method for the determination of a Performance Level (PL) . 36
Annex L (informative) Relationship between Safety Integrity Level (SIL) and Performance
Level (PL) . 39
Annex M (normative) Reset functions . 40
Annex N (informative) Guidance document on Environmental Aspects . 41
Annex O (normative) Seals of elastomer, cork and synthetic fibre mixtures . 42
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Regulation (EU) 2016/426 aimed to be covered . 43
European foreword
This document (EN 16678:2022) h
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