SIST EN 203-1:2006
(Main)Gas heated catering equipment - Part 1: General safety rules
Gas heated catering equipment - Part 1: General safety rules
This document specifies the general requirements and the constructional and operating characteristics relating to safety ), marking, and the associated test methods for gas heated commercial catering and bakery appliances.
The specific requirements are given in Parts 2, when exist.
Only appliances of types A1, A2, A3, B1 and B2, as defined in Clause 4, are considered in this document.
This document applies to all professional cooking and bakery appliances using gas for preparing food and drink.
This document covers type tests only, and only the net calorific value (Hi) and net Wobbe number (Wi) are used.
Annex C, informative, lists the main types of equipment entering into the field of application of this document.
NOTE This document does not really deal with rational use of energy. This aspect is mentioned in 6.10 only for the coherency with associated Parts 2 (clauses numbering) and to remind that in case of not any Part 2 exist for a specific product, rational use of energy has however to be considered.
Großküchengeräte für gasförmige Brennstoffe - Teil 1: Allgemeine Sicherheitsanforderungen
Dieses Dokument legt die allgemeinen Anforderungen und die Eigenschaften der Bauweise und Bedienung
bezüglich Sicherheit 1) , Kennzeichnung sowie die damit verbundenen Prüfmethoden für Großküchen- und
Bäckereigeräte für gasförmige Brennstoffe fest.
Die speziellen Anforderungen sind in den Teilen 2 der Normenreihe festgelegt.
Nur Geräte der Typen A1, A2, A3, B1 and B2, wie in Abschnitt 4 definiert, werden in diesem Dokument
berücksichtigt.
Dieses Dokument gilt für alle gewerblichen Geräte, die zum Kochen und Backen von Speisen und Getränken
unter Verwendung von Gas, bestimmt sind.
Dieses Dokument behandelt ausschließlich Baumusterprüfungen, lediglich die unteren Werte der
Wärmebelastung (Hi) und des Wobbeindex (Wi) werden verwendet.
Im Anhang C, informativ, sind die wesentlichen Gerätetypen des Anwendungsbereiches dieses Dokuments
aufgelistet.
ANMERKUNG Dieses Dokument befasst sich nicht wesentlich mit der rationellen Energienutzung. Dieser Aspekt wird in
6.10 nur im Zusammenhang mit den angegliederten Teilen 2 (Abschnittsnummerierung) erwähnt. Weiterhin soll darauf
hingewiesen werden, dass sofern keiner der Teile 2 auf ein bestimmtes Produkt zutrifft, die rationelle Energienutzung
trotzdem berücksichtigt werden muss.
Appareils de cuisine professionnelle utilisant les combustibles gazeux - Partie 1: Regles générales de sécurité
Cette norme définit les caractéristiques générales d'essais et les exigences concernant les caractéristiques de construction et de fonctionnement relatives a la sécurité ), l'utilisation rationnelle de l'énergie, au marquage des appareils pour la restauration professionnelle, la boulangerie artisanale utilisant les combustibles gazeux.
Seuls les appareils des types A1, A2 ,A3, B1, B2, C1, C3, C5 et C6 définis a l'article 4, sont étudiés dans cette norme.
Cette norme s'applique a tous les appareils de cuisine professionnelle, de boulangerie artisanale utilisant les combustibles gazeux destinés a la préparation et a la cuisson des aliments et des boissons.
La présente norme couvre uniquement les essais de type, et seul le pouvoir calorifique inférieure (PCI) et l'indice de Wobbe inférieur (Wi) sont utilisés.
L'annexe C, informative, donne une liste des principaux types d'appareils entrant dans le champ d'application de la présente norme.
Plinske naprave za gostinstvo – 1. del: Splošna varnostna pravila
General Information
Relations
Standards Content (Sample)
SIST EN 203-1
SLOVENSKI
STANDARD
februar 2006
Plinske naprave za gostinstvo – 1. del: Splošna varnostna pravila
(istoveten z EN 203-1:2005)
Gas heated catering equipment – Part 1: General safety rules
Appareils de cuisine professionnelle utilisant les
combustibles gazeux – Partie 1: Règles générales de
sécurité
Großküchengeräte für gasförmige Brennstoffe – Teil 1:
Allgemeine Sicherheitsanforderungen
Referenčna oznaka
ICS 97.040.20 SIST EN 203-1:2006 ((sl),en)
Nadaljevanje na straneh II do IV in od 1 do 75
© 2006-02: Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 203-1: 2006
NACIONALNI UVOD
Standard SIST EN 203-1:2006 ((sl),en), Plinske naprave za gostinstvo – 1. del: Splošna varnostna
pravila, ima status slovenskega standarda in je z metodo ponatisa z nacionalnim dodatkom privzet
evropski standard EN 203-1:2005.
Ta slovenski nacionalni standard zamenjuje slovenski nacionalni standard SIST EN 203-1:1997 in
dopolnili SIST EN 203-1:1997/A1:1997 in SIST EN 203-1:1997/A2:2001.
NACIONALNI PREDGOVOR
Evropski standard EN 203-1:2005 je pripravil tehnični odbor Evropskega komiteja za standardizacijo
CEN/TC 106 Plinski aparati za gostinstvo.
Pripravo tega standarda sta Evropska komisija in Evropsko združenje za prosto trgovino poverila
CEN. Povezave z direktivo (-ami) EU so razvidne iz dodatka ZA, ki je sestavni del tega standarda.
Slovenski standard SIST EN 203-1:2006 je dne 31. januarja 2006 po pooblastilu Strokovnega sveta
za splošno področje sprejel tehnični odbor SIST/TC PLN Plinske naprave za dom.
NACIONALNI DODATEK
Nacionalni dodatek, ki dodatek A Nacionalne razmere dopolnjuje s parametri, ki veljajo v Sloveniji, je
za Slovenijo normativen, za ostale države pa informativen.
Dodatek A: Nacionalne razmere
Naslednje tabele se dopolnijo s parametri, ki veljajo v Sloveniji:
Tabela A.1: Vrste priključkov, ki se uporabljajo v posameznih državah
Oznaka Kategorije I I I Druge kategorije
3B/P, 3+, 3P
države
Z navojem Drugi Z navojem Drugi
priključki iz priključki -
ISO 7-1 EN ISO 228-1 ISO 7-1 EN ISO 228-1
5.1.4 priključek z
olivo
SI da da da da da da
Tabela A.2: Premeri dimniških priključkov, ki se uporabljajo v posameznih državah
Oznaka države Zunanji premeri dimniških priključkov
mm
int. 60 – 70 – 80 – 90 – 100 – 110 – 120 – 130 – 140 – 150 – 160 – 180 – 200
SI
Dodatek B: Uporaba simbolov na aparatih in embalaži
Nacionalni dodatek dopolnjuje dodatek B Uporaba simbolov na aparatih in embalaži z oznako za
Slovenijo.
B.5 Ciljna država
Skladno s SIST EN ISO 3166-1 Kode za predstavljanje imen držav in njihovih podrejenih enot – 1. del:
Kode držav, velja za Slovenijo naslednja koda:
Slovenia SI.
II
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SIST EN 203-1 : 2006
ZVEZE S STANDARDI
S privzemom tega evropskega standarda veljajo za omejeni namen referenčnih standardov naslednji
standardi:
SIST EN 88 (en) Tlačni regulator za plinske aparate za vstopne tlake do 200 mbar
SIST EN 125 (en) Naprave za nadzor plamena pri plinskih aparatih –
Termoelektrična varovala
SIST EN 126 (en;de;fr) Večopravilni krmilniki za plinske aparate
SIST EN 161 (en) Samodejni zaporni ventili za plinske gorilnike in plinske aparate
SIST EN 257 (en) Mehanski termostati za plinske aparate
SIST EN 297 (en) Plinski kotli za centralno gretje – Tipa B in B z atmosferskimi
11 11BS
gorilniki z imensko močjo do vključno 70 kW
SIST EN 298 (en;de;fr) Naprave za samodejni nadzor plinskih gorilnikov in plinskih
aparatov z ali brez ventilatorja (gorilniški avtomati)
SIST EN 437:2005 ((sl),en;de;fr) Preskusni plini – Preskusni tlaki – Kategorije naprav
SIST EN 1106 (en) Ročne pipe za plinske aparate
SIST EN 12067-1 (en) Regulatorji razmerja plina in zraka za plinske gorilnike in plinske
aparate – 1. del: Pnevmatski tip
SIST EN 50165 (en) Electrical equipment of non-electric appliances for household and
similar purposes - Safety requirements
SIST EN 60335-1:2003 (en) Household and similar electrical appliances – Safety – Part 1:
General requirements (IEC 60335-1:2001, modified)
SIST EN 60730-2-1 (en) Automatic electrical controls for household and similar use
– Part 2-1: Particular requirements for electrical controls for
electrical household appliances (IEC 60730-2-1:1989, modified)
SIST EN 60730-2-9 (en) Automatic electrical controls for household and similar use – Part
2: Particular requirements for temperatur sensing controls
(IEC 60730-2-9:1992, modified)
SIST EN ISO 228-1 (en) Cevni navoji za zveze, ki ne tesnijo z navoji – 1. del: Mere,
odstopki in oznake (ISO 228-1:2000)
SIST EN ISO 3166-1 (en;fr) Kode za predstavljanje imen držav in njihovih podrejenih enot
– 1. del: Kode držav (ISO 3166-1:1997)
SIST ISO 7-1 (en) Cevni navoji, pri katerih je tesnjenje izvedeno z navojem
– 1. del: Mere, tolerance in označevanje
ISO 301 (en;fr) Zinc alloy ingots intended for casting
PREDHODNE IZDAJE
SIST EN 203-1:1997 ((sl),en) Plinske naprave za gostinstvo - 1. del: Varnostne zahteve
SIST EN 203-1:1997/A1:1997 ((sl),en) Plinske naprave za gostinstvo - 1. del: Varnostne zahteve –
Dopolnilo A1
SIST EN 203-1:1997/A2:2001 (en) Plinske naprave za gostinstvo - 1. del: Varnostne zahteve –
Dopolnilo A2
III
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SIST EN 203-1: 2006
OPOMBI
– Povsod, kjer se v besedilu standarda uporablja izraz “evropski standard”, v
SIST EN 203-1:2005 to pomeni “slovenski standard”.
– Nacionalni uvod in nacionalni predgovor nista sestavni del evropskega standarda.
IV
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EUROPEAN STANDARD
EN 203-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2005
ICS 97.040.20 Supersedes EN 203-1:1992
English Version
Gas heated catering equipment - Part 1: General safety rules
Appareils de cuisine professionnelle utilisant les Großküchengeräte für gasförmige Brennstoffe - Teil 1:
combustibles gazeux - Partie 1: Règles générales de Allgemeine Sicherheitsanforderungen
sécurité
This European Standard was approved by CEN on 21 April 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, 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
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 203-1:2005: E
worldwide for CEN national Members.
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EN 203-1:2005 (E)
Contents
Page
Foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions.6
3.1 General .6
3.2 Terminology referring to gases and pressures .6
3.3 General terminology referring to appliance design.7
3.4 Terminology referring to appliance operation.12
4 Classification.14
5 Constructional requirements .15
5.1 General .15
5.2 Particular requirements for components in the gas circuit.20
5.3 Particular requirements.25
6 Performance requirements.26
6.1 Soundness.26
6.2 Obtaining the gas rate .26
6.3 Safety of operation.27
6.4 Influence of burners on each other .29
6.5 Auxiliary equipment.29
6.6 Air proving device.31
6.7 Combustion.31
6.8 Particular requirements.32
6.9 Auxiliary energy .32
6.10 Rational use of energy.33
7 Test conditions .33
7.1 General .33
7.2 Soundness.35
7.3 Obtaining gas rates.36
7.4 Operational safety.39
7.5 Auxiliary equipment.44
7.6 Combustion.46
7.7 Air-proving device.49
7.8 Special tests .50
8 Designation .50
9 Marking and instructions.51
9.1 General .51
9.2 Marking on the appliance .51
9.3 Instructions .52
9.4 Packaging.54
Annex A (informative) National situations.62
Annex B (normative) Use of symbols on appliances and packaging .64
Annex C (informative) Trilingual list of appliances in the scope of EN 203-1 and corresponding Part 2.66
Annex D (normative) Non pneumatic air/gas control devices.67
Annex E (informative) Composition of the gas circuit.70
2
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EN 203-1:2005 (E)
Annex ZA (informative) Clauses of this European Standard addressing essential requirements or
other provisions of EU Directives.72
Bibliography.75
3
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EN 203-1:2005 (E)
Foreword
This document (EN 203-1:2005) has been prepared by Technical Committee CEN/TC 106 “Gas heated catering
equipment”, the secretariat of which is held by AFNOR.
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 December 2005, and conflicting national standards shall be withdrawn at the latest
by December 2008.
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.
This document supersedes EN 203-1:1992.
Questions relating to quality assurance systems, manufacturing tests and certificates of conformity of ancillary
devices in particular, are not covered by this document.
This European Standard constitutes Part 1 of EN 203 "Gas heated catering equipment". It states the definitions, the
requirements of construction and performance, the test requirements, the requirements of marking applicable to all
professional catering equipment mainly on matters of safety. The particular requirements relative to safety and
rational use of energy for each specific type of appliance is the subject of Part 2: Rational use of energy.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom
4
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EN 203-1:2005 (E)
1 Scope
This document specifies the general requirements and the constructional and operating characteristics relating to
1)
safety , marking, and the associated test methods for gas heated commercial catering and bakery appliances.
The specific requirements are given in Part 2.
Only appliances of types A , A , A , B and B , as defined in Clause 4, are considered in this document.
1 2 3 1 2
This document applies to all professional cooking and bakery appliances using gas for preparing food and drink.
This document covers type tests only, and only the net calorific value (H ) and net Wobbe number (W ) are used.
i i
Annex C, informative, lists the main types of equipment entering into the field of application of this document.
NOTE This document does not really deal with rational use of energy. This aspect is mentioned in 6.10 only for the
coherency with associated Part 2 (clauses numbering) and to remind that in case of not any Part 2 exist for a specific product,
rational use of energy has however to be considered.
2 Normative references
The following referenced documents are indispensable for the application 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 88, Pressure governors for gas appliances for inlet pressures up to 200 mbar
EN 125, Flame supervision devices for gas burning appliances – Thermo-electric flame supervision devices.
EN 126, Multifunctional controls for gas burning appliances
EN 161, Automatic shut off devices for gas burners and gas appliances
EN 257, Mechanical thermostats for gas burning appliances
EN 297, Gas-fired central heating boilers – Type B and B boilers fitted with atmospheric burners of nominal
11 11BS
heat input not exceeding 70 kW
EN 298, Automatic gas burner control systems for gas burners and gas appliances with or without fans
EN 437:2003, Test gases – Test pressures – Appliance categories
EN 1106, Manually operated taps for gas burning appliances
EN 12067-1, Gas/air ratio controls for gas burners and gas burning appliances - Part 1: Pneumatic types
EN 50165, Electrical equipment of non-electric appliances for household and similar purposes – Safety
requirements
EN 60335-1:2002, Safety of household and similar electrical appliances – Part 1: General requirements (IEC
60335-1:2001, modified)
EN 60730-2-1, Automatic electrical controls for household and similar use – Part 2-1: Particular requirements for
electrical controls for electrical household appliances (IEC 60730-2-1:1989, modified)
1)
The term "safety" includes not only the safety of the appliance gas line but also that of the overall cooking appliance during
its normal use in catering.
5
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EN 203-1:2005 (E)
EN 60730-2-9, Automatic electrical controls for household and similar use – Part 2-9: Particular requirements for
temperature sensing controls (IEC 60730-2-9:2000, modified)
EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads – Part 1: Dimensions,
tolerances and designation (ISO 228-1:2000)
EN ISO 3166-1, Codes for the representation of names of countries and their subdivision – Part 1: Country codes
(ISO 3166-1:1997)
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads – Part 1: Dimensions, tolerances and
designation
ISO 301, Zinc alloy ingots intended for casting
3 Terms and definitions
3.1 General
For the purposes of this document, the following terms and definitions apply.
3.2 Terminology referring to gases and pressures
3.2.1
reference conditions
15 °C, 1 013,25 mbar
3.2.2
units
3
calorific value and Wobbe number: (MJ/m );
2
test pressures: 1 mbar = 10 Pa
3.2.3
gas supply pressure
p
difference between the static pressure measured at the inlet connection of the appliance, with the appliance in
operation, and atmospheric pressure
NOTE Gas supply pressure is expressed in millibars (mbar).
3.2.4
relative density
d
ratio of the masses of equal volumes of dry gas and dry air under the same conditions of temperature and
pressure: 15 °C or 0 °C and 1 013,25 mbar
[EN 437:2003]
3.2.5
calorific value
quantity of heat produced by the complete combustion, at a constant pressure equal to 1 013,25 mbar, of a unit
volume or mass of gas, the constituents of the combustible mixture being taken at reference conditions and the
products of combustion being brought back to the same conditions.
6
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EN 203-1:2005 (E)
A distinction is made between:
− the gross calorific value H : the water produced by combustion is assumed to be condensed;
s
− the net calorific value H : the water produced by combustion is assumed to be in the vapour state
i
NOTE The calorific value is expressed:
3
− either in megajoules per cubic metre (MJ/m ) of dry gas under the reference conditions;
− or in megajoules per kilogram (MJ/kg) of dry gas
[EN 437:2003]
3.2.6
Wobbe index
gross Wobbe index W ; net Wobbe index W
s i
ratio of the calorific value of a gas per unit volume and the square root of its relative density under the same
reference conditions. The Wobbe index is said to be gross or net according to whether the calorific value used is
the gross or net calorific value
NOTE The Wobbe indices are expressed:
3
− either in megajoules per cubic metre (MJ/m ) of dry gas under the reference conditions
− or in megajoules per kilogram (MJ/kg) of dry gas
[EN 437:2003]
3.3 General terminology referring to appliance design
3.3.1 Terminology referring to the gas circuit
3.3.1.1
gas circuit
part of an appliance between the gas inlet connection and the burner(s) which conveys or contains the gas
3.3.1.2
inlet connection
part of the appliance which is intended to be connected to the gas supply
3.3.1.3
mechanical soundness joint (or mechanical means of obtaining soundness)
assembly of several parts, generally metallic, which achieves soundness by use of mechanical means such as
metal-to-metal joints, toroidal sealing rings (O rings) or flat joints
3.3.1.4
restrictor or calibrated orifice
device with one or more orifices that is placed in the path of the gas flow between the appliance inlet connection
and the burner so as to create a pressure drop, and thus reduce the gas pressure at the burner to a predetermined
value for a given supply pressure and rate
3.3.1.5
gas rate adjuster
component which allows the gas input to each burner to be set at a predetermined value according to supply
conditions.
Adjustment may be continuous (screw adjuster) or discontinuous (changing restrictors).
The adjusting device of an adjustable governor is regarded as a gas rate adjuster.
The operation of setting this device is known as “setting the gas rate”
7
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EN 203-1:2005 (E)
3.3.1.6
gas rate control
tap or equivalent component which allows the gas supply to one or more burners to be opened or closed, and
possibly, the burner or burners to be adjusted to a gas input lower than the nominal rate
3.3.1.7
touch control
indirect manual burner control resulting from finger contact or light touch, with or without movement of the contact
surface
3.3.1.8
indirect control
control that commands a shut-off or gas regulating device via some auxiliary energy (e.g. electric, pneumatic, etc.)
3.3.1.9
primary aeration adjuster
device which allows the aeration of a burner to be set at a desired value, according to the supply conditions.
The operation of changing the setting of the device is called “adjusting the primary aeration”
3.3.1.10
injector
component which admits gas into an atmospheric burner
3.3.1.11
heat bearing fluid
intermediary fluid that directly or indirectly conveys the heat from a burner to the food or cooking container
3.3.2 Terminology referring to the burner
3.3.2.1
atmospheric induction burner
burner in which part of the air necessary for combustion, called primary air, is entrained by the gas flow and is
mixed upstream of the burner. The remainder of the air, called secondary air, is taken up downstream of the burner
3.3.2.2
main burner
burner which affects the heating function of the appliance and is often called simply a “burner”
3.3.2.3
auxiliary burner
burner which allows, by means of an ignition burner or pilot, ignition of a main burner
3.3.2.4
ignition burner or pilot
burner intended to ignite the main burner. If a burner operates independently of the main burners, it is called a
“pilot”
3.3.2.5
alternating ignition burner
ignition burner which goes off as soon as the main burner is ignited and is ignited from the main burner just before
the main burner is extinguished
3.3.2.6
forced draught burner
burner in which the combustion air is introduced by means of a fan
3.3.2.7
pre-mixed burner
burner in which the gas and at least the quantity of air necessary for complete combustion is pre-mixed before the
burner ports
8
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EN 203-1:2005 (E)
3.3.3
purging
act of forcing air into the combustion circuit to expel any remaining gas/air mixture or products of combustion
Pre-purging is a purging that takes place between the starting demand and the activation of the ignition device
3.3.4
control device for aeration or evacuation of combustion products
device which causes shut-down in the event of abnormal aeration or combustion products evacuation conditions
3.3.5
air/gas ratio device
device which automatically adjusts the combustion air flow to the gas flow and vice versa
3.3.6 Terminology referring to the combustion circuit
3.3.6.1
combustion circuit
circuit including the air supply duct, if it exists, the combustion chamber, the heat exchanger and the combustion
products evacuation duct, if it exists
3.3.6.2
combustion products circuit
circuit including the combustion chamber, the heat exchanger and the combustion products evacuation duct if
exists
3.3.6.3
combustion chamber
enclosure in which the air/gas mixture burns
3.3.6.4
flue outlet
part of an appliance intended to be connected to a combustion products evacuation duct
3.3.6.5
draught diverter
device placed in the combustion products circuit of type B appliances, which is intended to reduce the influence of
1
the flue pull and down draught on the burner performance and combustion
3.3.6.6
combustion products outlet or flueway extension
part of an appliance not connected to a flue, through which products of combustion are discharged into a room
3.3.6.7
combustion products discharge safety device
device that at least shuts off the main burner when there is an unacceptable spillage of combustion products at the
draught diverter of type B appliances
11BS
3.3.7
auxiliary equipment
all the accessory devices of an appliance which act directly or indirectly on the gas rate: e.g. gas rate control, flame
supervision device, governor, thermostat, etc.
3.3.7.1
ignition device
means used to light gas admitted to the ignition burner or main burner
This can be intermittent or permanent
9
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EN 203-1:2005 (E)
3.3.7.1.1
intermittent ignition device
means, which may or may not be fixed to the appliance, to assure ignition of the initial flow of gas only to the
ignition burner or main burner
3.3.7.1.2
permanent ignition device
means which, at any time when the gas rate controls are open, assures ignition or re-ignition of the gas admitted to
ignition burners or main burners
3.3.7.2
flame supervision device
device which, on the disappearance of the supervised flame, shuts off the gas supply.
It is described as having “simple control” if it shuts off the gas supply to the main burner only.
It is described as having “complete control" if it shuts off the gas supply to the main burner and to the ignition
burner
3.3.7.2.1
ignition time
time interval between the ignition of the supervised flame and the moment when the force thus produced is
sufficient to keep the valve open
3.3.7.2.2
ignition safety times
3.3.7.2.2.1
ignition safety time (TSA)
time that elapses between the order to open the gas supply to the burner and the gas supply being shut off in the
event no flame has been detected
[EN 297:1994]
3.3.7.2.2.2
maximum ignition safety time (TSA )
MAX
ignition safety time measured under the least favourable conditions of ambient temperature and variation in supply
voltage
[EN 297:1994]
3.3.7.2.3
extinction safety time (TSE)
time that elapses between extinction of the supervised flame and the order to shut off the gas supply to the burner
[EN 297:1994]
3.3.7.2.4
closing time
time interval between the interruption of the auxiliary ene
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