Safety and control devices for burners and appliances burning gaseous and/or liquid fuels - Valve proving systems for automatic shut-off valves

EN 13611:2019, Clause 1 is replaced by following:
This document specifies the safety, design, construction and performance requirements, and testing for valve-proving systems, hereafter referred to as “VPS”, intended for use with gas burners and gas-burning appliances burning one or more gaseous fuels.
This document applies to all types of VPS used for the automatic detection of leakage in a gas burner section having at least two automatic shut-off valves, and which give a signal if the leakage of one of the valves, the piping in-between the valves or of the VPS itself and its components exceeds the detection limit.
This document applies to VPS for gases with a maximum inlet pressure up to and including 500 kPa.
This document does not apply to VPSs for use in explosive atmospheres.
This document is applicable to AC and DC supplied VPS (for VPS supplied by stand-alone battery system, battery systems for mobile applications, or VPS which are intended to be connected to DC supply networks, see Annex I).

Sicherheits-, Regel- und Steuereinrichtungen für Brenner und Brennstoffgeräte für gasförmige und/oder flüssige Brennstoffe - Ventilüberwachungssysteme für automatische Absperrventile

EN 13611:2019, Abschnitt 1, wird wie folgt ersetzt:
Dieses Dokument legt die Sicherheits-, Auslegungs-, Konstruktions- und Leistungsanforderungen an Ventilüberwachungssysteme, im Folgenden "VPS" genannt, für Gasbrenner und Gasgeräte für einen oder mehrere gasförmige(n) Brennstoff(e) fest.
Dieses Dokument gilt für alle Arten von VPS, die für die automatische Erkennung einer Leckage in einem Gasbrennerabschnitt mit mindestens zwei automatischen Absperrventilen eingesetzt werden und die ein Signal abgeben, wenn die Leckage eines der Ventile, der zwischenliegenden Verrohrung oder des VPS selbst den Empfindlichkeitsgrenzwert überschreitet.
Dieses Dokument gilt für VPS für Gase mit einem höchsten Eingangsdruck bis einschließlich 500 kPa.
Dieses Dokument gilt nicht für VPS zum Einsatz in explosionsgefährdeten Atmosphären.
Dieses Dokument gilt für mit Wechsel- und Gleichspannung betriebene VPS (für VPS, die durch unabhängige Batteriesysteme, Batteriesysteme für die Anwendung in Fahrzeugen oder VPS für den Anschluss an Gleichspannungsnetze betrieben werden, siehe Anhang I).

Dispositifs de commande et de sécurité pour brûleurs à gaz et appareils à gaz - Systèmes de contrôle d'étanchéité pour robinets automatiques de sectionnement

L'article 1 de l'EN 13611:2019 est remplacé par ce qui suit :
Le présent document précise les exigences pour la sécurité, la construction et le fonctionnement ainsi que les essais applicables aux systèmes de contrôle d'étanchéité, dénommés ci-après SCE, prévus pour une utilisation avec les brûleurs et appareils à gaz.
Le présent document s'applique aux SCE qui sont utilisés pour une détection automatique de fuite sur une partie de la ligne gaz d'un brûleur ayant au moins deux robinets, et qui donnent un signal si l'un des deux robinets, la ligne entre les 2 robinets ou le SCE lui-même, présente un débit de fuite supérieur au niveau de détection du SCE.
Le présent document s'applique aux SCE pour les combustibles gazeux ayant une pression d’entrée maximale allant jusqu'à 500 kPa inclus.
Le présent document ne s'applique pas aux SCE prévus pour être utilisés en atmosphère explosive.
Le présent document couvre les SCE alimentés en courant alternatif et en courant continu (pour les SCE alimentés par des systèmes de batterie autonomes, des systèmes de batterie pour applications mobiles ou des systèmes destinés à être connectés au réseau d'alimentation en courant continu, voir Annexe I).

Varnostne in nadzorne naprave za gorilnike in aparate na plin in/ali tekoča goriva - Sistemi za preskušanje avtomatskih zapornih ventilov

General Information

Status
Published
Publication Date
15-Nov-2022
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
16-Nov-2022
Due Date
11-Aug-2022
Completion Date
16-Nov-2022

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SLOVENSKI STANDARD
SIST EN 1643:2023
01-februar-2023
Nadomešča:
SIST EN 1643:2014

Varnostne in nadzorne naprave za gorilnike in aparate na plin in/ali tekoča goriva -

Sistemi za preskušanje avtomatskih zapornih ventilov

Safety and control devices for burners and appliances burning gaseous and/or liquid

fuels - Valve proving systems for automatic shut-off valves

Sicherheits-, Regel- und Steuereinrichtungen für Brenner und Brennstoffgeräte für

gasförmige und/oder flüssige Brennstoffe - Ventilüberwachungssysteme für
automatische Absperrventile
Dispositifs de commande et de sécurité pour brûleurs à gaz et appareils à gaz -
Systèmes de contrôle d'étanchéité pour robinets automatiques de sectionnement
Ta slovenski standard je istoveten z: EN 1643:2022
ICS:
23.060.40 Tlačni regulatorji Pressure regulators
27.060.01 Gorilniki in grelniki vode na Burners and boilers in
splošno general
SIST EN 1643:2023 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 1643:2023
---------------------- Page: 2 ----------------------
SIST EN 1643:2023
EN 1643
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 23.060.40 Supersedes EN 1643:2014
English Version
Safety and control devices for burners and appliances
burning gaseous and/or liquid fuels - Valve proving
systems for automatic shut-off valves

Dispositifs de commande et de sécurité pour brûleurs à Sicherheits-, Regel- und Steuereinrichtungen für

gaz et appareils à gaz - Systèmes de contrôle Brenner und Brennstoffgeräte für gasförmige

d'étanchéité pour robinets automatiques de und/oder flüssige Brennstoffe -
sectionnement Ventilüberwachungssysteme für automatische
Absperrventile
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 1643:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 1643:2023
EN 1643:2022 (E)
Contents Page

European foreword ............................................................................................................................................ 4

Introduction .......................................................................................................................................................... 5

1 Scope .......................................................................................................................................................... 6

2 Normative references .......................................................................................................................... 6

3 Terms and definitions ......................................................................................................................... 7

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 Mechanical parts of the control ....................................................................................................... 9

6.3 Materials .................................................................................................................................................. 9

6.4 Gas connections ................................................................................................................................... 10

6.5 Electrical parts of the control ......................................................................................................... 10

6.6 Protection against internal faults for the purpose of functional safety .......................... 10

6.101 Additional constructional requirements for VPS .................................................................... 13

7 Performance ......................................................................................................................................... 13

7.1 General.................................................................................................................................................... 13

7.2 Leak-tightness ...................................................................................................................................... 13

7.3 Torsion and bending .......................................................................................................................... 15

7.4 Rated flow rate ..................................................................................................................................... 15

7.5 Durability ............................................................................................................................................... 15

7.6 Performance tests for electronic controls ................................................................................. 15

7.7 Long-term performance for electronic controls ...................................................................... 15

7.8 Data exchange ...................................................................................................................................... 15

7.101 Functional requirements ................................................................................................................. 16

8 Electrical requirements .................................................................................................................... 18

8.1 General.................................................................................................................................................... 18

8.2 Protection by enclosure.................................................................................................................... 18

9 Electromagnetic compatibility (EMC) ......................................................................................... 18

9.1 Protection against environmental influences .......................................................................... 18

9.2 Supply voltage variations below 85 % of rated voltage ........................................................ 19

9.3 Voltage dips and interruptions ...................................................................................................... 19

9.4 Supply frequency variations ........................................................................................................... 19

9.5 Surge immunity tests ......................................................................................................................... 20

9.6 Electrical fast transient/burst ........................................................................................................ 20

9.7 Immunity to conducted disturbances induced by radio frequency fields ..................... 20

9.8 Immunity to radiated disturbances induced by radio frequency fields ......................... 21

9.9 Electrostatic discharge tests ........................................................................................................... 21

---------------------- Page: 4 ----------------------
SIST EN 1643:2023
EN 1643:2022 (E)

9.10 Power frequency magnetic field immunity tests .................................................................... 21

9.11 Harmonics and interharmonics including mains signalling at AC power port, low

frequency immunity tests ................................................................................................................ 21

10 Marking, instructions ........................................................................................................................ 22

10.1 Marking .................................................................................................................................................. 22

10.2 Instructions ........................................................................................................................................... 22

10.3 Warning notice .................................................................................................................................... 22

Annex A (informative) Abbreviations and Symbols ............................................................................ 23

Annex B (informative) Leak-tightness tests for gas controls − volumetric method ................ 24

Annex C (informative) Leak-tightness tests for gas controls − pressure loss method ........... 25

Annex D (normative) Calculation of pressure loss into leakage rate ........................................... 26

Annex E (normative) Electrical/electronic component fault modes ............................................ 27

Annex F (normative) Additional requirements for safety accessories and pressure

accessories as defined in EU Directive 2014/68/EU ............................................................. 29

Annex G (normative) Materials for pressurized parts ....................................................................... 30

Annex H (normative) Additional materials for pressurized parts ................................................ 31

Annex I (normative) Requirements for controls used in DC supplied burners and appliances

burning gaseous or liquid fuels ..................................................................................................... 32

I.1 Introduction ......................................................................................................................................... 32

Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) ............. 34

Annex K (normative) Method for the determination of a Performance Level (PL) ................. 35

Annex L (informative) Relationship between Safety Integrity Level (SIL) and Performance

Level (PL) ............................................................................................................................................... 36

Annex M (normative) Reset functions ...................................................................................................... 37

Annex N (informative) Guidance document on Environmental Aspects ..................................... 38

Annex O (normative) Seals of elastomer, cork and synthetic fibre mixtures ............................ 39

Annex AA (informative) Application Guidance ..................................................................................... 40

AA.1 General ................................................................................................................................................... 40

AA.2 Use of a VPS ........................................................................................................................................... 40

Annex ZA (informative) Relationship between this document and the essential

requirements of Directive 2009/142/EC aimed to be covered ......................................... 41

Annex ZB (informative) Relationship between this European Standard and the essential

requirements of Regulation (EU) 2016/426 aimed to be covered ................................... 42

Annex ZC (informative) Relationship between this document and the essential requirements

of Directive 2014/68/EU aimed to be covered ........................................................................ 43

Bibliography ....................................................................................................................................................... 44

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SIST EN 1643:2023
EN 1643:2022 (E)
European foreword

This document (EN 1643:2022) 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 European Standard shall be given the status of a national standard, either by publication of an iden-

tical text or by endorsement, at the latest by May 2023, and conflicting national standards shall be with-

drawn at the latest by November 2025.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 1643:2014.

The following significant changes compared to the previous edition have been incorporated in this

document:
a) alignment with EN 13611:2019;

b) modification of the contents of Annex A: “Gas connections in common use in the various countries”

replaced by “Abbreviations and Symbols”.

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: 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 the United

Kingdom.
---------------------- Page: 6 ----------------------
SIST EN 1643:2023
EN 1643:2022 (E)
Introduction
This document is intended to be used in conjunction with EN 13611:2019.

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

clauses, subclauses and Annexes are not indicated as an addition.

If by reference to EN 13611:2019 the term “control” is given, this term should be read as valve-proving

system.

EN 1643 compliance for valve-proving systems cannot be claimed based upon SIL classification according

to EN 61508.

SIL classification cannot be claimed based upon compliance with this standard only. A supplementary

method for SIL determination is specified in EN 13611:2019, Annex J.
---------------------- Page: 7 ----------------------
SIST EN 1643:2023
EN 1643:2022 (E)
1 Scope
EN 13611:2019, Clause 1 is replaced by following:

This document specifies the safety, design, construction and performance requirements, and testing for

valve-proving systems, hereafter referred to as “VPS”, intended for use with gas burners and gas-burning

appliances burning one or more gaseous fuels.

This document applies to all types of VPS used for the automatic detection of leakage in a gas burner

section having at least two automatic shut-off valves, and which give a signal if the leakage of one of the

valves, the piping in-between the valves or of the VPS itself and its components exceeds the detection

limit.

This document applies to VPS for gases with a maximum inlet pressure up to and including 500 kPa.

This document does not apply to VPSs for use in explosive atmospheres.

This document is applicable to AC and DC supplied VPS (for VPS supplied by stand-alone battery system,

battery systems for mobile applications, or VPS which are intended to be connected to DC supply

networks, see Annex I).
2 Normative references
EN 13611:2019, Clause 2 applies with the following additions:

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. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 161:2022, Automatic shut-off valves for gas burners and gas appliances
EN 1854:— , Pressure sensing devices for gas burners and gas burning appliances

EN 13611:2019 , Safety and control devices for burners and appliances burning gaseous and/or liquid fuels

— General requirements

EN 60730-1:2016 , Automatic electrical controls — Part 1: General requirements (IEC 60730-1:2013,

modified)

EN 60730-2-5:2015 , Automatic electrical controls — Part 2-5: Particular requirements for automatic

electrical burner control systems (IEC 60730-2-5:2013)

EN 60947-5-1:2017 , Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and

switching elements — Electromechanical control circuit devices (IEC 60947-5-1:2016, modified)

Under preparation. Stage at the time of publication: FprEN 1854:2022.
As impacted by EN 13611:2019/AC:2021.
As impacted by EN 60730-1:2016/A1:2019 and EN 60730-1:2016/A2:2022.
As impacted by EN 60730-2-5:2015/A1:2019 and EN 60730-2-5:2015/A2:2021.
As impacted by EN 60947-5-1:2017/AC:2020-05.
---------------------- Page: 8 ----------------------
SIST EN 1643:2023
EN 1643:2022 (E)

EN 61810-1:2015 , Electromechanical elementary relays — Part 1: General and safety requirements

(IEC 61810-1:2015)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 13611:2019 apply with the

following modifications.

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/
3.23
safety shutdown
EN 13611:2019, 3.23 is replaced by 3.108.
3.101
valve proving system
VPS

system to check the effective closure of automatic shut-off valves by detecting leakage, that often consists

of a programming unit, a measuring device, valves and other functional assemblies

3.102
VPS programming unit
unit which follows a predetermined sequence of valve proving actions
3.103
detecting device
device for direct or inferential detection of leakage
Note 1 to entry: Leakage is detected by measuring flow or pressure.
3.104
VPS operational time
time taken by the VPS to perform its entire cycle of operation
3.105
detection limit

maximum amount of leakage that can occur before the VPS is required to give a signal

Note 1 to entry: See Figure 1.
3.106
detection setting
actual leakage rate at which the VPS gives a signal
Note 1 to entry: See Figure 1.

As impacted by EN 61810-1:2015/AC:2017-07, EN 61810-1:2015/AC:2018-04 and EN 61810-1:2015/A1:2020.

---------------------- Page: 9 ----------------------
SIST EN 1643:2023
EN 1643:2022 (E)
Key
burner heat input, gas flow, expressed in m /h
detected leakage rate, expressed in dm /h
1 detection limit, see 3.105
2 detection setting, see 3.106
Figure 1 — Illustration of detection limit and detection setting
3.107
leakage testing time
time in which the VPS monitors a gas valve for leakage
3.108
safety shutdown

process which is effected immediately following the detection of a leakage exceeding the detection limit,

or detection of an internal fault, disabling energization of the ignition and of the automatic shut-off valves

3.109
volatile lock-out

safety shutdown condition of the VPS where a restart can only be accomplished by either a manual reset

of the VPS, or an interruption of the main power and its subsequent restoration
[SOURCE: EN 298:2022, 3.121.2]
3.110
non-volatile lock-out

safety shutdown condition of the VPS, where a restart can only be accomplished by a manual reset of the

VPS and by no other means
[SOURCE: EN 298:2022, 3.121.1]
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SIST EN 1643:2023
EN 1643:2022 (E)
3.111
automatic shut-off valves
valve which opens when energized and closes automatically when de-energized
Note 1 to entry: For further information refer to EN 161.
[SOURCE: EN 161:2022, 3.101]
4 Classification
4.1 Classes of control
EN 13611:2019, 4.1 is not applicable.
4.2 Groups of control
Shall be according to EN 13611:2019, 4.2.
4.3 Classes of control functions
Shall be according to EN 13611:2019, 4.3 with the following addition:
The VPS for automatic shut-off valves is a Class C control function.
4.4 Types of DC supplied controls
Shall be according to EN 13611:2019, 4.4.
5 Test conditions and uncertainty of measurements
Shall be according to EN 13611:2019, Clause 5.
6 Design and construction
6.1 General
Shall be according to EN 13611:2019, 6.1 with the following addition:

The VPS shall be designed such that changes in critical circuit component values (such as those affecting

timing or sequence) within the worst case tolerances of the components specification, including the long-

term stability, shall result in the VPS continuing to function in accordance with this document.

Compliance shall be checked by worst-case analysis.

The construction of any additional functions included in the VPS for which no provisions exist in this

document shall be such that they do not degrade its safe and correct operation.

Where components are used to complete the VPS, these components shall comply with the relevant

standard. Valves (e.g. for pressurizing and relieving the test section) integrated into the VPS functional

sequence shall comply with EN 161:2022, Class A, if not otherwise specified by a relevant appliance

standard. Pressure-sensing devices shall comply with EN 1854:— for combustible gases.

6.2 Mechanical parts of the control
Shall be according to EN 13611:2019, 6.2.
6.3 Materials
Shall be according to EN 13611:2019, 6.3.
---------------------- Page: 11 ----------------------
SIST EN 1643:2023
EN 1643:2022 (E)
6.4 Gas connections
Shall be according to EN 13611:2019, 6.4.
6.5 Electrical parts of the control
6.5.1 General
Shall be according to EN 13611:2019, 6.5.1.
6.5.2 Switching elements
6.5.2.1 Requirements
Shall be according to EN 13611:2019, 6.5.2.1 with the following addition:

The suitability of measures to maintain the capability to interrupt the energization of the shut-off valve

terminals by means of at least one switching element or a non-replaceable overcurrent protection device

has been interrupted shall be verified by 6.5.2.2.
6.5.2.2 Tests of protecting measures against failure of switching elements
Shall be according to EN 13611:2019, 6.5.2.2 with the following modifications:

For the purpose of this clause, the terms “safety related output terminals” or “output terminals” are

replaced by “shut-off valve terminals”.
Delete in the brackets of the first paragraph the words “contacts of”.
Add the following NOTE:

NOTE A switching element means semiconductors as well as electro-mechanic switching elements.

Add to the end of the 2 paragraph the following text:

If the valve circuit of the automatic burner control system is always supplied by an integrated power

supply, the test shall be applied with this integrated power supply under worst-case conditions for the

highest short circuit current.
6.5.3 Electrical components
Shall be according to EN 13611:2019, 6.5.3.
6.6 Protection against internal faults for the purpose of functional safety
6.6.1 Design and construction requirements
Shall be according to EN 13611:2019, 6.6.1.
6.6.2 Class A
EN 13611:2019, 6.6.2 is not applicable.
6.6.3 Class B
EN 13611:2019, 6.6.3 is not applicable.
---------------------- Page: 12 ----------------------
SIST EN 1643:2023
EN 1643:2022 (E)
6.6.4 Class C
6.6.4.1 Design and construction requirements
Shall be according to EN 13611:2019, 6.6.4.1 with the following modification:
Replace the third paragraph by the following:
At least the following states are defined as unsafe states:

a) if during burner shutdown, the gas flow through a valve or by-passing valve is higher than the

detection limit value of that valve except for the function of the VPS;

b) if a test for leakage is outside the limits defined in 3.105 or 3.106 (see 6.101.2);

c) overriding the VPS sequence control of the safety shut-off valves by the automatic burner control

system, except for the normal function of the VPS;
d) preventing the VPS from going to a defined fault response.

VPS or safety-related (hardware) parts of the VPS that are not powered during the stand-by and the

running state of the appliance shall execute all relevant internal tests during powering-up of the VPS.

Once the VPS is operational, the required internal test to detect the first faults leading to one of the unsafe

states as given in a) to d) shall be executed every 3 s.

For this type of VPS, the second fault shall only be considered to occur when a start-up sequence has been

performed between the first and the second fault.

VPS that are powered during stand-by or running state of the appliance shall comply with the following:

— the reaction time to detect the first faults leading to one of the unsafe states as given in a) to d) is ≤ 3 s;

— the reaction time to detect second independent fault is ≤ 24 h.

The VPS shall be fail-safe. VPS which meet the requirements of this clause and EN 13611:2019, 6.6.1.1

are considered to be inherently fail-safe.

The circuitry and the construction of the VPS shall be such that they meet the requirements of 7.101 and

shall be appraised according to the requirements of 6.6.4.2, 6.6.4.3 and 6.6.4.4, and under the test

conditions and criteria of 6.6.5.

Components shall be dimensioned on the basis of the worst-case conditions which can arise in the VPS,

as stated within the design documentation.
6.6.4.2 First fault
EN 13611:2019, 6.6.4.2 is replaced by the following:

Any first fault (see Annex E) in any one component or any one fault together with any other fault arising

from that first fault shall result in either:
a) the VPS becoming inoperative with all valve terminals de-energized;

b) the VPS proceeding to safety shutdown within 3 s, followed by a non-volatile or volatile lock-out. The

lock-out may be executed by the VPS, or by another safety related control within the appliance

preventing the burner start up. During subsequent reset action, the VPS shall not operate any valves

or the pressurizing pump belonging to the valve. Subsequent reset from the lock-out condition under

the same fault condition results in the VPS returning to the volatile or non-volatile lock-out condition;

continue with fault assessment during lock-out or safety shutdown according to 6.6.4.4.3;

---------------------- Page: 13 ----------------------
SIST EN 1643:2023
EN 1643:2022 (E)

c) the VPS continuing to operate, the fault being identified during the next start-up sequence, the result

being a) or b);

d) the VPS remaining operational in accordance with all other requirements of this document

(see 7.101).

For VPS designed for use on non-permanent operating appliances list item c) is applicable, whereas list

item c) is not applicable for VPS designed for use on permanent operating appliances.

6.6.4.3 Second fault
Shall be according to EN 13611:2019, 6.6.4.3 with the following addition:

For VPS designed for use on non-permanent operating appliances EN 13611:2019, 6.6.4.3 a)

...

SLOVENSKI STANDARD
oSIST prEN 1643:2020
01-oktober-2020

Varnostne in nadzorne naprave za gorilnike in aparate na plin in/ali tekoča goriva -

Sistemi za preskušanje samodejnih zapornih ventilov

Safety and control devices for burners and appliances burning gaseous and/or liquid

fuels - Valve proving systems for automatic shut-off valves

Sicherheits- und Regeleinrichtungen für Brenner und Brennstoffgeräte für gasförmige

und/oder flüssige Brennstoffe - Ventilüberwachungssysteme für automatische
Absperrventile

Équipements auxiliaires pour brûleurs et appareils utilisant des combustibles gazeux ou

liquides - Systèmes de contrôle d’étanchéité pour robinets automatiques de
sectionnement
Ta slovenski standard je istoveten z: prEN 1643
ICS:
23.060.40 Tlačni regulatorji Pressure regulators
27.060.01 Gorilniki in grelniki vode na Burners and boilers in
splošno general
oSIST prEN 1643:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 1643:2020
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oSIST prEN 1643:2020
DRAFT
EUROPEAN STANDARD
prEN 1643
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2020
ICS 23.060.40 Will supersede EN 1643:2014
English Version
Safety and control devices for gas burners and gas burning
appliances - Valve proving systems for automatic shut-off
valves

Dispositifs de commande et de sécurité pour brûleurs à Sicherheits-, Regel- und Steuereinrichtungen für

gaz et appareils à gaz - Systèmes de contrôle Gasbrenner und Gasgeräte -

d'étanchéité pour robinets automatiques de Ventilüberwachungssysteme für automatische

sectionnement Absperrventile

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, Turkey 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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1643:2020 E

worldwide for CEN national Members.
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oSIST prEN 1643:2020
prEN 1643:2020 (E)
1 Contents Page

2 European foreword ...................................................................................................................................................... 5

3 Introduction .................................................................................................................................................................... 6

4 1 Scope .................................................................................................................................................................... 7

5 2 Normative references .................................................................................................................................... 7

6 3 Terms and definitions ................................................................................................................................... 8

7 4 Classification................................................................................................................................................... 10

8 4.1 Classes of control .......................................................................................................................................... 10

9 4.2 Groups of control .......................................................................................................................................... 10

10 4.3 Classes of control functions ....................................................................................................................... 10

11 4.4 Types of DC supplied controls .................................................................................................................. 10

12 5 Test conditions and uncertainty of measurements .......................................................................... 10

13 5.1 Test conditions .............................................................................................................................................. 10

14 5.2 Uncertainty of measurements .................................................................................................................. 10

15 6 Design and construction ............................................................................................................................. 10

16 6.1 General.............................................................................................................................................................. 10

17 6.2 Mechanical parts of the control ............................................................................................................... 11

18 6.3 Materials .......................................................................................................................................................... 11

19 6.4 Gas connections ............................................................................................................................................. 11

20 6.5 Electrical parts of the control ................................................................................................................... 11

21 6.5.1 General.............................................................................................................................................................. 11

22 6.5.2 Switching elements ...................................................................................................................................... 11

23 6.5.3 Electrical components ................................................................................................................................. 12

24 6.6 Protection against internal faults for the purpose of functional safety .................................... 12

25 6.6.1 Design and construction requirements ................................................................................................ 12

26 6.6.2 Class A ............................................................................................................................................................... 12

27 6.6.3 Class B ............................................................................................................................................................... 12

28 6.6.4 Class C ................................................................................................................................................................ 12

29 6.6.5 Circuit and construction evaluation....................................................................................................... 14

30 6.101 Additional constructional requirements for VPS .............................................................................. 14

31 6.101.1 Signal for indication ............................................................................................................................ 14

32 6.101.2 VPS setting ............................................................................................................................................... 14

33 7 Performance ................................................................................................................................................... 15

34 7.1 General.............................................................................................................................................................. 15

35 7.2 Leak-tightness ................................................................................................................................................ 15

36 7.2.1 Requirements ................................................................................................................................................. 15

37 7.2.2 Tests ................................................................................................................................................................... 17

38 7.3 Torsion and bending .................................................................................................................................... 17

39 7.4 Rated flow rate ............................................................................................................................................... 17

40 7.5 Durability ......................................................................................................................................................... 17

41 7.6 Performance tests for electronic controls ........................................................................................... 17

42 7.7 Long-term performance for electronic controls ................................................................................ 17

43 7.7.1 General.............................................................................................................................................................. 17

44 7.7.2 Stress test ......................................................................................................................................................... 17

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45 7.7.3 Long term performance tests ................................................................................................................... 18

46 7.8 Data exchange ................................................................................................................................................ 18

47 7.101 Functional requirements ........................................................................................................................... 18

48 7.101.1 General ..................................................................................................................................................... 18

49 7.101.2 Programme sequence ......................................................................................................................... 18

50 7.101.3 Timing ...................................................................................................................................................... 18

51 7.101.4 Testing of the programme sequence and timing ...................................................................... 19

52 7.101.5 Detection limit ....................................................................................................................................... 19

53 7.101.6 Self-checking .......................................................................................................................................... 19

54 7.101.7 Lock-out and reset device ................................................................................................................. 19

55 8 Electrical requirements.............................................................................................................................. 20

56 8.1 General ............................................................................................................................................................. 20

57 8.2 Protection by enclosure ............................................................................................................................. 20

58 9 Electromagnetic compability (EMC) ...................................................................................................... 20

59 9.1 Protection against environmental influences .................................................................................... 20

60 9.2 Supply voltage variations below 85 % of rated voltage ................................................................. 21

61 9.3 Voltage dips and interruptions ................................................................................................................ 21

62 9.4 Supply frequency variations ..................................................................................................................... 21

63 9.5 Surge immunity tests................................................................................................................................... 22

64 9.6 Electrical fast transient/burst ................................................................................................................. 22

65 9.7 Immunity to conducted disturbances induced by radio frequency fields ............................... 22

66 9.8 Immunity to radiated disturbances induced by radio frequency fields ................................... 23

67 9.9 Electrostatic discharge tests ..................................................................................................................... 23

68 9.10 Power frequency magnetic field immunity tests .............................................................................. 23

69 9.11 Harmonics and interharmonics including mains signalling at a. c. power port, low

70 frequency immunity tests .......................................................................................................................... 23

71 10 Marking, instructions .................................................................................................................................. 23

72 10.1 Marking ............................................................................................................................................................ 23

73 10.2 Instructions ..................................................................................................................................................... 24

74 10.3 Warning Notice .............................................................................................................................................. 24

75 Annex A (informative) Abbreviations and Symbols ........................................................................................ 25

76 Annex B (informative) Leak-tightness tests for gas controls − volumetric method ............................ 26

77 Annex C (informative) Leak-tightness tests for gas controls − pressure loss method ....................... 27

78 Annex D (normative) Calculation of pressure loss into leakage rate ....................................................... 28

79 Annex E (normative) Electrical/electronic component fault modes ........................................................ 29

80 Annex F (normative) Additional requirements for safety accessories and pressure

81 accessories as defined in EU Directive 2014/68/EU ....................................................................... 31

82 Annex G (normative) Materials for pressurized parts ................................................................................... 32

83 Annex H (informative) Additional materials for pressurized parts .......................................................... 33

84 Annex I (normative) Requirements for controls used in DC supplied burners and appliances

85 burning gaseous or liquide fuels ............................................................................................................. 34

86 Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) ......................... 36

87 Annex K (normative) Method for the determination of a Performance Level (PL) ............................. 37

88 Annex L (informative) Relationship between Safety Integrity Level (SIL) and Performance

89 Level (PL) ......................................................................................................................................................... 38

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90 Annex M (normative) Reset functions .................................................................................................................. 39

91 Annex N (informative) Guidance document on Environmental Aspects ................................................. 40

92 Annex O (normative) Seals of elastomer, cork and synthetic fibre mixtures ........................................ 41

93 Annex AA (informative) Application Guidance ................................................................................................. 42

94 Annex ZA (informative) Relationship between this European Standard and the essential

95 requirements of EU Directive 2009/142/EC aimed to be covered ............................................. 43

96 Annex ZB (informative) Relationship between this European Standard and the essential

97 requirements of Regulation (EU) 2016/426 aimed to be covered ............................................. 44

98 Annex ZC (informative) Relationship between this European Standard and the Essential

99 Safety Requirements of EU Directive 2014/68/EU aimed to be covered ................................. 47

100 Bibliography ................................................................................................................................................................. 48

101
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102 European foreword

103 This document (prEN 1643:2020) has been prepared by Technical Committee CEN/TC 58 “Safety and

104 control devices for burners and appliances burning gaseous or liquid fuels”, the secretariat of which is

105 held by BSI.
106 This document is currently submitted to the CEN Enquiry
107 This document will supersede EN 1643:2014.

108 This document has been prepared under a mandate given to CEN by the European Commission and the

109 European Free Trade Association, and supports essential requirements of Regulation (EU) 2016/426.

110 For relationship with EU Regulation, see informative Annexes ZA, ZB and ZC, which are an integral part

111 of this document.

112 Note that the following provides details of significant technical changes between this document and the

113 previous edition:
114 a) Alignment with EN 13611:2019;
115 b) Update on the requirements from ISO 23551-4:2018;

116 c) Annex ZB has been added with respect to Regulation (EU) 2016/426 on appliances burning gaseous

117 fuels (GAR).
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118 Introduction

119 This document refers to clauses of EN 13611:2019 or adapts it by stating “with the following

120 modification”, “with the following addition”, “is replaced by the following” or “is not applicable” in the

121 corresponding clause. This document adds clauses or subclauses to the structure of EN 13611:2019

122 which are particular to this document, i.e. subclauses or annexes which are additional to those in

123 EN 13611 are numbered starting from 101 or are designated as Annex AA, Annex BB, Annex CC etc. It

124 should be noted that these clauses and subclauses are not indicated as an addition. If by reference to

125 EN 13611 the term “control” is given, this term should be read as valve-proving systems.

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126 1 Scope
127 EN 13611:2019, Clause 1 is replaced by following:

128 This document specifies safety, constructional and performance requirements of valve-proving systems,

129 hereafter referred to as VPS, intended for use with gas burners and gas-burning appliances. It also

130 describes the test procedures for checking compliance with these requirements and provides

131 information necessary for the purchaser and user.

132 This document applies to all types of VPS which are used for the automatic detection of leakage in a gas

133 burner section having at least two valves designed in accordance with EN 161 and which give a signal if

134 the leakage of one of the valves exceeds the detection limit.

135 This document applies to VPS for fuel gases with a maximum working pressure up to and including

136 500 kPa.
137 This document does not apply to VPSs for use in explosive atmospheres.

138 This document is applicable to AC and DC supplied VPS (for VPS supplied by stand-alone battery

139 system, battery systems for mobile applications or systems which are intended to be connected to DC

140 supply networks VPS see Annex I).
141 Provisions for production control are not part of this document.
142 2 Normative references

143 The following documents are referred to in the text in such a way that some or all of their content

144 constitutes requirements of this document. For dated references, only the edition cited applies. For

145 undated references, the latest edition of the referenced document (including any amendments) applies.

146 EN 161, Automatic shut-off valves for gas burners and gas appliances
147 EN 1854, Pressure sensing devices for gas burners and gas burning appliances

148 EN 13611:2019, Safety and control devices for burners and appliances burning gaseous and/or liquid

149 fuels - General requirements

150 EN 60730-1:2016, Automatic electrical controls — Part 1: General requirements (IEC 60730-1:2013,

151 modified + COR1:2014)

152 EN 60730-2-5:2015, Automatic electrical controls — Part 2-5: Particular requirements for automatic

153 electrical burner control systems (IEC 60730-2-5:2013, modified)

154 EN 60947-5-1:2017, Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and

155 switching elements - Electromechanical control circuit devices
156 (IEC 60947-5-1:2016+IEC 60947-5-1:2016/COR1:2016)

157 EN 61810-1:2015, Electromechanical elementary relays — Part 1: General requirements

158 (IEC 61810-1:2015)
As amended by EN 60730-1:2016/A1:2019.
As amended by EN 60730-2-5:2015/A1:2019.
As impacted by EN 61810-1:2015/AC:2017
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159 3 Terms and definitions

160 For the purposes of this document, the terms and definitions given in EN 13611:2019 and the following

161 apply.

162 ISO and IEC maintain terminological databases for use in standardization at the following addresses:

163 — IEC Electropedia: available at http://www.electropedia.org/
164 — ISO Online browsing platform: available at http://www.iso.org/obp
165 3.101
166 valve proving system
167 VPS

168 system to check the effective closure of automatic shut-off valves by detecting leakage, that often

169 consists of a programming unit, a measuring device, valves and other functional assemblies

170 3.102
171 VPS programming unit
172 unit which follows a predetermined sequence of valve proving actions
173 3.103
174 detecting device
175 device for direct or inferential detection of leakage
176 EXAMPLE Leakage is detected by measuring flow or pressure.
177 3.104
178 VPS operational time
179 time taken by the VPS to perform its entire cycle of operation
180 3.105
181 detection limit

182 maximum amount of leakage that can occur before the VPS is required to give a signal

183 Note 1 to entry: See Figure 1.
184 3.106
185 detection setting
186 actual leakage rate at which the VPS gives a signal
187 Note 1 to entry: See Figure 1.
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188
189 Key
X 3
burner heat, gas flow, expressed in m /h
Y 3
detected leakage rate, expressed in dm /h
1 detection limit, see 3.105
2 detection setting, see 3.106
190 Figure 1 — Illustration of detection limit and detection setting
191 3.107
192 leakage testing time
193 time in which the VPS monitors a gas valve for leakage
194 3.108
195 safety shutdown

196 process which is effected immediately following the detection of a leakage exceeding the detection limit,

197 or detection of an internal fault, disabling energisation of the ignition and of the automatic shut-off

198 valves
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199 3.109
200 volatile lock-out

201 safety shutdown condition of the system where a restart can only be accomplished by either the manual

202 reset of the system, or an interruption of the main power and its subsequent restoration

203 3.110
204 non-volatile lock-out

205 safety shutdown condition of the system, where a restart can only be accomplished by the manual reset

206 of the system and by no other means
207 4 Classification
208 4.1 Classes of control
209 EN 13611:2019, 4.1 is not applicable.
210 4.2 Groups of control
211 Shall be according to EN 13611:2019, 4.2.
212 4.3 Classes of control functions
213 Shall be according to EN 13611:2019, 4.3 with the following addition:

214 The valve proving system for automatic shut-off valves is a Class C control function.

215 4.4 Types of DC supplied controls
216 Shall be according to EN 13611:2019, 4.4
217 5 Test conditions and uncertainty of measurements
218 5.1 Test conditions
219 Shall be according to EN 13611:2019, 5.1. with following addition:

220 All tests are performed in the order written in this document (i.e. EN 1643) except for that of 6.6 and

221 7.7.
222 5.2 Uncertainty of measurements
223 Shall be according to EN 13611:2019, 5.2.
224 6 Design and construction
225 6.1 General
226 EN 13611:2019, 6.1, applies, with the following addition.

227 The VPS shall be designed such that changes in critical circuit component values (such as those affecting

228 timing or sequence) within the worst case tolerances of the components specification, including the

229 long-term stability, shall result in the system continuing to function in accordance with this document.

230 Compliance shall be checked by worst-case analysis.

231 The construction of any additional functions included in the VPS for which no provisions exist in this

232 document shall be such that they do not degrade the safe and correct operation.

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233 Where components are used to complete the VPS, these components shall comply with the relevant

234 harmonized European controls Standard. Valves (e.g. for pressurizing and relieving the test section)

235 integrated into the VPS functional sequence shall comply with EN 161 Class A, if not otherwise specified

236 by a relevant appliance standard, and pressure-sensing devices, with EN 1854.

237 6.2 Mechanical parts of the control
238 Shall be according to EN 13611:2019, 6.2.
239 6.3 Materials
240 Shall be according to EN 13611:2019, 6.3.
241 6.4 Gas connections
242 Shall be according to EN 13611:2019, 6.4.
243 6.5 Electrical parts of the control
244 6.5.1 General
245 Shall be according to EN 13611:2019, 6.5.1 with the following addition:

246 The construction of any additional functions included in the valve proving system, programming unit or

247 flame detector device for which no provisions exist in this document, shall be such that they do not

248 degrade the safe and correct operation of the valve proving system.
249 6.5.2 Switching elements
250 6.5.2.1 Requirements
251 Shall be according to EN 13611:2019, 6.5.2.1 with the following addition:

252 Measures shall be taken to protect against failure of two (or more) switching elements, due to a

253 common cause, by an external short circuit that would prevent the valve proving system from

254 performing a safety shutdown.

255 Acceptable methods are current limitation, overcurrent protection device or internal fault detecting

256 functions.

257 The suitability of measures to maintain the capability to interrupt the energization of the shut-off valve

258 terminals by means of at least one switching element or a non-replaceable overcurrent protection

259 device has been interrupted shall be verified by the following test.
260 6.5.2.2 Tests of protecting measures against failure of switching elements

261 Shall be according to EN 13611:2019, 6.5.2.1 with the following modifications:

262 For the purpose of this clause, the terms “safety related output terminals” or “output terminals” are

263 replaced by “shut-off valve terminals”.
264 Delete in the brackets of the first para
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