SIST EN 298:2004
(Main)Automatic gas burner control systems for gas burners and gas burning appliances with or without fans
Automatic gas burner control systems for gas burners and gas burning appliances with or without fans
This European Standard specifies requirements for the construction and function, test methods and marking of automatic burner control systems and also programming units and their associated flame detector devices for gas burners and gas burning appliances with or without fans.
This standard also applies to automatic burner control systems, programming units and their associated flame detector devices that include additional functions.
Automatic burner control systems utilizing thermo-electric flame supervision devices are not covered by this standard.
This European Standard covers type testing only.
NOTE European Standards for burners, appliances or processes which use automatic burner control systems, programming units or flame detectors can override the requirements of this standard.
Feuerungsautomaten für Gasbrenner und Gasgeräte mit oder ohne Gebläse
Diese Europäische Norm legt Anforderungen an den Bau und die Funktion, an Prüfverfahren und die Kennzeichnung von Feuerungsautomaten sowie von Steuergeräten und den zugehörigen Flammenwächtern für Gasbrenner und Gasgeräte mit oder ohne Gebläse fest.
Diese Norm gilt auch für Feuerungsautomaten, Steuergeräte und die zugehörigen Flammenwächter, die zusätzliche Funktionen enthalten.
Feuerungsautomaten, die thermoelektrische Flammenüberwachungseinrichtungen verwenden, sind nicht Gegenstand dieser Norm.
In dieser Norm wird nur die Typprüfung behandelt.
ANMERKUNG Europäische Normen für Brenner, Geräte oder Prozesse, die Feuerungsautomaten, Steuergeräte oder Flammenwächter verwenden, können dieser Norm vorgezogen werden.
Systemes automatiques de commande et de sécurité pour bruleurs et appareils avec ou sans ventilateur utilisant les combustibles gazeux
La présente Norme Européenne a pour objet de fixer les exigences concernant les caractéristiques de construction et de fonctionnement, la technique des essais et le marquage des systemes de commande et de sécurité pour bruleurs automatiques et vise également les dispositifs de commande avec les dispositifs de détection de flamme qui leur sont associés, pour les bruleurs et les appareils avec ou sans ventilateur.
Naprave za samodejni nadzor plinskih gorilnikov in plinskih aparatov z ali brez ventilatorja (gorilniški avtomati)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 298:2004
01-januar-2004
1DGRPHãþD
SIST EN 298:1997
Naprave za samodejni nadzor plinskih gorilnikov in plinskih aparatov z ali brez
ventilatorja (gorilniški avtomati)
Automatic gas burner control systems for gas burners and gas burning appliances with
or without fans
Feuerungsautomaten für Gasbrenner und Gasgeräte mit oder ohne Gebläse
Systemes automatiques de commande et de sécurité pour bruleurs et appareils avec ou
sans ventilateur utilisant les combustibles gazeux
Ta slovenski standard je istoveten z: EN 298:2003
ICS:
27.060.20
SIST EN 298:2004 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 298
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2003
ICS 27.060.20 Supersedes EN 298:1993
English version
Automatic gas burner control systems for gas burners and gas
burning appliances with or without fans
Systèmes automatiques de commande et de sécurité pour Feuerungsautomaten für Gasbrenner und Gasgeräte mit
brûleurs et appareils avec ou sans ventilateur utilisant les oder ohne Gebläse
combustibles gazeux
This European Standard was approved by CEN on 23 May 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 298:2003 E
worldwide for CEN national Members.
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EN 298:2003 (E)
Contents
Foreword. 4
Introduction. 5
1 Scope . 5
2 Normative references. 5
3 Terms and definitions. 6
4 Classification. 10
5 Conditions for testing and measuring tolerances. 11
6 Constructional requirements. 12
6.1 General. 12
6.2 Protection provided by the enclosure . 12
6.3 Electrical equipment. 12
6.4 Electrical components. 13
6.4.1 Performance of electrical components . 13
6.4.2 Test. 13
6.5 Long-term performance . 13
6.5.1 General. 13
6.5.2 Stress test and long-term performance test . 13
7 Functional requirements . 15
7.1 General. 15
7.2 Programme . 16
7.2.1 General. 16
7.2.2 Safety actions. 16
7.2.3 Flame failure. 17
7.2.4 Recycling . 17
7.2.5 Spark restoration . 17
7.2.6 Supervision of other external devices during the start-up sequence. 17
7.2.7 Start following safety shut down . 17
7.2.8 Inter-purge and inter-waiting time. 17
7.3 Times. 17
7.3.1 General. 17
7.3.2 Purge and waiting times. 18
7.3.3 Safety times. 18
7.3.4 Response time in case of flame failure . 18
7.3.5 Reaction time to achieve safety shut-down. 18
7.3.6 Reaction time to achieve lock-out. 18
7.4 Flame detector device . 18
7.5 Lock-out and reset device. 19
7.5.1 Lock-out function. 19
7.5.2 Reset device . 19
7.6 Performance tests. 19
7.6.1 At ambient temperature. 19
7.6.2 At low temperature . 20
7.6.3 At high temperature. 20
8 Protection against environmental influences. 20
8.1 Temperature range . 20
8.2 Supply voltage variations . 20
8.2.1 General. 20
8.2.2 Requirements for operation below 85 % of rated voltage . 20
8.3 Supply voltage dips, short interruptions and voltage variations immunity . 21
8.3.1 General. 21
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EN 298:2003 (E)
8.3.2 Supply voltage dips, short interruptions and voltage variations test.22
8.4 Supply frequency variations.22
8.4.1 General.22
8.4.2 Supply frequency variations test .22
8.5 Surge immunity.23
8.5.1 General.23
8.5.2 Surge immunity test .23
8.6 Electrical fast transient/burst immunity .24
8.6.1 General.24
8.6.2 Electrical fast transient/burst immunity test.24
8.7 Electromagnetic conducted and radiated disturbances induced by radio-frequency fields.24
8.7.1 Immunity to conducted disturbances, induced by radio-frequency fields.24
8.7.2 Immunity to radiated disturbances, induced by radiated fields .25
8.8 Electrostatic discharge immunity .26
8.8.1 General.26
8.8.2 Electrostatic discharge immunity test.27
9 Protection against internal faults.27
9.1 Internal faults .27
9.1.1 General.27
9.1.2 Systems for non-permanent operation: first fault.27
9.1.3 Systems for non-permanent operation: second fault.28
9.1.4 System for permanent operation: first fault.28
9.1.5 System for permanent operation: second fault.28
9.1.6 Systems for permanent and non-permanent operation: faults during lock-out or safety- shut-
down.28
9.2 Circuit and construction evaluation .29
9.2.1 Test conditions .29
9.2.2 Test criteria.29
10 Additional requirements for complex electronics.30
10.1 General.30
10.2 Fault avoidance and fault tolerance.30
10.3 Documentation.30
10.4 Assessment.31
11 Marking, installation and operating instructions .31
11.1 Marking .31
11.2 Installation and operating instructions .32
11.3 Warning note.33
Annex A (normative) Electrical/electronic component fault modes .34
Annex B (informative) Functional characteristics of burner control systems, to be given by the
appliance standard .36
Annex C (normative) Requirements for DC supplied burner.37
C.1 Scope .37
C.2 Thermal stress test.37
C.3 Long term performance test [by the manufacturer].37
C.4 At ambient temperature.37
C.5 Supply voltage variations .37
C.6 Supply voltage, supply frequency, surge immunity, electrical fast transient/burst,
electromagnetic conducted disturbances .38
C.7 Electrical transient conduction immunity for Type B only.38
C.7.1 General.38
C.7.2 Electrical transient conduction immunity test.39
Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other
provisions of EU Directives .40
Bibliography .42
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EN 298:2003 (E)
Foreword
This document EN 298:2003 has been prepared by Technical Committee CEN /TC 58, "Safety and control devices
for gas-burners and gas-burning appliances", 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 identical text or
by endorsement, at the latest by March 2004, and conflicting national standards shall be withdrawn at the latest by
September 2006.
This document supersedes EN 298:1993.
This document has been prepared under a mandate given to CEN by the European Commission and the European
Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.
Annexes A and C are normative. Annex B is informative.
This document includes a Bibliography.
This European Standard covers type testing only.
Following a request from CEN/TC 58, CEN has agreed to defer the date of withdrawal of EN 298 :1993 for a
transition period of 3 years.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
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EN 298:2003 (E)
Introduction
Whilst this European Standard is written primarily for Automatic Gas Burner Control Systems used on or in
appliances for cooking, heating, hot water production, refrigeration, lighting or washing and having, where
applicable, a normal water temperature not exceeding 105 °C, it can be usefully quoted, as a whole or in part, by
standards for other equipment.
The functional characteristics of the automatic burner control systems, programming units, and their associated
flame detector devices, in so far as they are not laid down in this standard, are given by the standards for the
appliances for which the automatic burner control systems are intended.
This standard deals with immunity aspects of Electromagnetic Compatibility (EMC) only. Since automatic burner
control systems are intended for use as an integrated or incorporated part of an appliance, further EMC tests (both
immunity and emission) can be required for the intended use.
1 Scope
This European Standard specifies requirements for the construction and function, test methods and marking of
automatic burner control systems and also programming units and their associated flame detector devices for gas
burners and gas burning appliances with or without fans.
This standard also applies to automatic burner control systems, programming units and their associated flame
detector devices that include additional functions.
Automatic burner control systems utilizing thermo-electric flame supervision devices are not covered by this
standard.
This European Standard covers type testing only.
NOTE European Standards for burners, appliances or processes which use automatic burner control systems,
programming units or flame detectors can override the requirements of this standard.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
ENV 50204, Radiated electromagnetic field from digital radio telephones — Immunity test.
EN 60068-2-6:1995, Environmental testing — Part 2: Tests; tests Fc: Vibration (sinusoidal) (IEC 60068-2-6:1995 +
Corrigendum:1995).
EN 60127-1, Miniature fuses - Part 1: definitions for miniature fuses and general requirements for miniature fuse-
links (IEC 60127-1:1988).
EN 60335-1:1994, Safety of household and similar electrical appliances — Part 1: General requirements
(IEC 60335-1:1991, modified).
EN 60529:2000, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989).
EN 60730-1:2000, Automatic electrical controls for household and similar use — Part 1: General requirements
(IEC 60730-1:1999, modified).
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EN 298:2003 (E)
EN 60730-2-5:2002, Automatic electrical controls for household and similar use — Part 2-5: Particular requirements
for automatic electrical burner control systems (IEC 60730-2-5:2000, modified).
EN 60947-5-1:1997, Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and switching
elements; electromechanical control circuit devices (IEC 60947-5-1:1997).
EN 61000-4-2, Electromagnetic compatibility (EMC) — Part 4-2: Testing and measuring techniques; Electrostatic
discharge immunity test (IEC 61000-4-2:1995).
EN 61000-4-3, Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques; Radiated,
radio-frequency, electromagnetic field immunity test (IEC 61000-4-3:2002).
EN 61000-4-4, Electromagnetic compatibility (EMC) — Part 4-4: Testing and measurement techniques; Electrical
fast transient/burst immunity test(IEC 61000-4-4:1995).
EN 61000-4-5, Electromagnetic compatibility (EMC) — Part 4-5: Testing and measurement techniques; Surge
immunity test (IEC 61000-4-5:1995).
EN 61000-4-6, Electromagnetic compatibility (EMC) — Part 4-6: Testing and measurement techniques; Immunity to
conducted disturbances, induced by radio-frequency fields (IEC 61000-4-6:1996).
EN 61000-4-11, Electromagnetic compatibility (EMC) — Part 4-11: Testing and measurement techniques —
Voltage dips, short interruptions and voltage variations immunity tests (IEC 61000-4-11:1994).
EN 61558-2-6, Safety of power transformers, power supply units and similar – Part 2-6: Particular requirements for
safety isolating transformers for general use (IEC 61558-2-6:1997).
EN 61558-2-17, Safety of power transformers, power supply units and similar — Part 2-17: Particular requirements
for safety isolating transformers for switch mode power supplies (IEC 61558-2-17:1997).
ISO 7637-1, Road vehicles - Electrical disturbances from conduction and coupling - Part 1: Definitions and general
considerations.
ISO 7637-2, Road vehicles - Electrical disturbance by conduction and coupling - Part 2: Commercial vehicles with
nominal 24 V supply voltage - Electrical transient conduction along supply lines only.
IEC 60384-14, Fixed capacitors for use in electronic equipment — Part 14: Sectional specification: Fixed capacitors
for electromagnetic interference suppression and connection to the supply mains.
IEC 60384-16, Fixed capacitors for use in electronic equipment — Part 16: Sectional specification: Fixed metallized
polypropylene film dielectric d.c. capacitors.
3 Terms and definitions
For the purposes of this European Standard the following terms and definitions apply.
3.1
flame detector device
device by which the presence of a flame is detected and signalled;
it can consist of a flame sensor, an amplifier and a relay for signal transmission. These parts, with the possible
exception of the actual flame sensor, can be assembled in a single housing for use in conjunction with a programming
unit
3.2
flame sensor
actual flame-sensing element, the output signal or value of which is used as the input for the flame detector amplifier
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EN 298:2003 (E)
3.3
sensed flame and flame signal
3.3.1
sensed flame
physical value monitored by the flame sensor
3.3.2
flame signal
signal given by the flame detector device in case of sensed flame
3.4
flame simulation
condition which occurs when the flame signal indicates the presence of a flame when in reality no flame is present
3.5
programming unit
unit which reacts to signals from control and safety devices, gives control commands, controls the start-up sequence,
supervises the burner operation and causes controlled shut-down, and if necessary safety shut-down and lock-out;
the programming unit follows a predetermined sequence of actions and always operates in conjunction with a flame
detector device
3.6
automatic burner control system
system comprising at least a programming unit and all the elements of a flame detector device;
the various functions of an automatic burner control system can be in one or more housings
3.7
start position
stage, where the system is not in lock-out position, has not yet received the start signal but can proceed with the start-
up sequence when required;
at this stage, the output terminals for any automatic shut-off valve and ignition device are not energized
3.8
start signal
signal e. g. from a thermostat, which releases the system from its start position and commences the predetermined
programme
3.9
programme
sequence of control operations determined by the programming unit involving switching on, starting up, supervising
and switching off the burner;
safety actions such as safety shut down and lock out are also part of the programme
3.10
purge
forced introduction of air through the combustion chamber and flue passages in order to displace any remaining
fuel/air mixture and/or products of combustion
3.10.1
pre-purge
purge which takes place between the start signal and the energization of the ignition device
3.10.2
post-purge
purge which takes place immediately following shut-down
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EN 298:2003 (E)
3.11
first safety time
interval between the pilot gas valve, the start gas valve or main gas valve, as applicable, being energized and the pilot
gas valve, start gas valve or main gas valve, as applicable, being de-energized if the flame detector signals the
absence of a flame
NOTE Where there is no second safety time, this is called the safety time.
3.12
second safety time
where there is a first safety time applicable to either a pilot or start gas flame only, the interval between the main gas
valve being energized and the main gas valve being de-energized if the flame detector signals the absence of a flame
3.13
burner without fan
burner where the primary air required for combustion is provided by the action of the gas and the secondary air is
freely available from the surroundings
3.14
burner with fan
burner in which some or all of the air required for the combustion is supplied by means of a fan (i. e. forced draught or
induced draught)
3.15
running position of the system
position of the system in which the burner is in normal operation under the supervision of the programming unit and its
flame detector device
3.16
controlled shut-down
process by which the power to the gas shut-off valve(s) is removed before any other action takes place, e. g. as a
result of the action of a controlling function
3.17
safety shut-down
process which is effected immediately following the response of a protection device or the detection of a fault in the
automatic burner control system and puts the burner out of operation;
the resulting state of the system is defined by deactivated terminals for the gas shut-off valves and the ignition device
3.18
lock-out
3.18.1
non-volatile lock-out
safety shut-down condition of the system, such that a restart can only be accomplished by a manual reset of the
system and by no other means
3.18.2
volatile lock-out
safety shut-down condition of the system, such that a restart can only be accomplished by either the manual reset of
the system, or an interruption of the main power and its subsequent restoration
3.19
spark restoration
process by which, following loss of flame signal, the ignition device will be switched on again without total interruption
of the gas supply
3.20
recycling
process by which, after a safety shut-down a full start-up sequence is automatically repeated
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EN 298:2003 (E)
3.21
functions of automatic bu
...
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