EN 497:2022
(Main)Specification for dedicated liquefied petroleum gas appliances - Multi purpose boiling burners for outdoor use - Cooking vessels with a diameter greater than 300 mm
Specification for dedicated liquefied petroleum gas appliances - Multi purpose boiling burners for outdoor use - Cooking vessels with a diameter greater than 300 mm
This standard specifies the constructional and performance characteristics, safety specifications and rational use of energy, relevant test methods and marking of burners burning liquefied petroleum gas and designed to heat up vessels of diameter greater than 300 mm, containing liquids or food. This standard overs appliances, generally floor standing, fitted with one or several open burners without enclosure, designed to be used outdoors and operating with the gases corresponding to the categories indicated in 4.
Festlegungen für Flüssiggasgeräte - Flüssiggasbetriebene Mehrzweckkochgeräte zur Verwendung im Freien - Kochgefäße mit einem Durchmesser größer als 300 mm
Dieses Dokument legt die Konstruktions- und Leistungsmerkmale, die Sicherheitsanforderungen und die wirtschaftliche Energieverwendung sowie die entsprechenden Prüfmethoden und Kennzeichnung von Brennern, die mit Flüssiggas betrieben werden und zum Erwärmen von Behältern mit einem Durchmesser von mehr als 300 mm bestimmt sind, die Flüssigkeiten oder Lebensmittel enthalten, fest.
Sie werden im gesamten Text als „Geräte“ bezeichnet.
Dieses Dokument behandelt die in der Regel auf einem Boden stehende Geräte, die mit einem oder mehreren offenen Brennern ausgestattet sind, die für die Verwendung im Freien ausgelegt sind und mit Gasen betrieben werden, die den unter Abschnitt 4 festgelegten Kategorien entsprechen.
Dieses Dokument ist nicht anzuwenden für Geräte, die mit Gasen der 3. Gasfamilie bei einem Druck größer als in Abschnitt 4 beschrieben, betrieben werden.
Durch dieses Dokument sind nur Geräte abgedeckt, die nicht an Abgasleitungen der Verbrennungsprodukte und nicht an das elektrische Netz angeschlossen sind.
Geräte mit einer Nennwärmebelastung von weniger als 1,16 kW unterliegen aufgrund ihrer geringen Leistung keinen Anforderungen an eine wirtschaftliche Energieverwendung.
Bei Geräten mit mehreren konzentrischen Brennern sind Brenner mit einem Durchmesser von mehr als 56 cm aus Sicherheitsgründen aufgrund der Handhabung des Behälters nicht Gegenstand jeglicher Anforderungen an eine wirtschaftliche Energieverwendung.
Dieses Dokument behandelt keine LPG-Flüssiggasbehälter, die dazugehörigen Regelgeräte, Rohre und biegsamen Anschlussschlauchleitungen, die für die Gasversorgung der von in diesem Dokument erfassten Geräte verwendet werden.
ANMERKUNG Regelgeräte, Schlauchleitungen und biegsame Anschlussschläuche unterliegen anderen Normen (EN 16129, EN 16436 1+A3 und EN 16436 2 usw.) und nationalen Vorschriften.
Spécifications pour les appareils fonctionnant exclusivement aux gaz de pétrole liquéfiés - Brûleurs à usages multiples, avec supports intégrés, utilisés en plein air - Récipients de cuisson avec un diamètre supérieur à 300 mm
Le présent document précise les caractéristiques de construction et de fonctionnement ainsi que les spécifications de sécurité et d'utilisation rationnelle de l'énergie, les méthodes d'essai afférentes et le marquage des brûleurs fonctionnant aux gaz de pétrole liquéfiés et destinés à chauffer des récipients d'un diamètre supérieur à 300 mm contenant des liquides ou des aliments.
Ils sont désignés dans l'ensemble du texte par « appareils ».
Le présent document s'applique aux appareils, reposant en général sur le sol, comportant un ou plusieurs brûleurs découverts, destinés à être utilisés en plein air et fonctionnant avec les gaz correspondant aux catégories indiquées en 4.
Les appareils alimentés avec les gaz de la troisième famille à des pressions autres que celles définies en 4, sont exclus du domaine d'application du présent document.
Les appareils objets du présent document ne sont pas raccordés à un conduit d'évacuation des produits de la combustion et ne sont pas raccordés au réseau électrique.
Les appareils de débit calorifique nominal inférieur à 1,16 kW ne sont pas soumis aux exigences d'utilisation rationnelle de l'énergie, compte tenu de leur faible puissance.
Pour les appareils munis de multiples brûleurs concentriques, les brûleurs de plus de 56 cm de diamètre ne sont pas soumis aux exigences d'utilisation rationnelle de l'énergie pour des raisons de sécurité liées à la manipulation du récipient.
Le présent document ne couvre pas les récipients de gaz de pétrole liquéfié (GPL), ainsi que les détendeurs, tuyaux et tubes souples associés qui sont utilisés pour l'alimentation en gaz des appareils couverts par le présent document.
NOTE Les détendeurs, tuyaux et tubes souples sont couverts par d'autres normes (EN 16129, EN 16436 1+A3 et EN 16436 2, etc.) et les réglementations nationales.
Specifikacija za plinske aparate na utekočinjeni naftni plin - Večnamenski kuhalni aparati za zunanjo uporabo
Ta standard določa značilnosti izvedbe in delovanja, varnostne specifikacije in racionalno rabo energije, ustrezne preskusne metode in označevanje gorilnikov na utekočinjen naftni plin, namenjenih za ogrevanje posod s premerom nad 300 mm, ki vsebujejo tekočino ali hrano. Standard zajema naprave, običajno stoječe na tleh in opremljene z enim ali več odprtimi gorilniki brez ohišja, ki so namenjene za uporabo na prostem in ki pri delovanju uporabljajo pline, ki ustrezajo kategorijam, navedenim v 4. točki.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN 497:1997
Specifikacija za plinske aparate na utekočinjeni naftni plin - Večnamenski kuhalni
aparati za zunanjo uporabo
Specification for dedicated liquefied petroleum gas appliances - Multi purpose boiling
burners for outdoor use
Festlegungen für Flüssiggasgeräte - Flüssiggasbetriebene Mehrzweckkochgeräte zur
Verwendung im Freien
Spécifications pour les appareils fonctionnant exclusivement aux gaz de pétrole liquéfiés
- Brûleurs à usages multiples
Ta slovenski standard je istoveten z: EN 497:2022
ICS:
97.040.20 Štedilniki, delovni pulti, Cooking ranges, working
pečice in podobni aparati tables, ovens and similar
appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 497
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2022
EUROPÄISCHE NORM
ICS 97.040.20 Supersedes EN 497:1997
English Version
Specification for dedicated liquefied petroleum gas
appliances - Multi purpose boiling burners for outdoor use
- Cooking vessels with a diameter greater than 300 mm
Spécifications pour les appareils fonctionnant Festlegungen für Flüssiggasgeräte -
exclusivement aux gaz de pétrole liquéfiés - Brûleurs à Flüssiggasbetriebene Mehrzweckkochgeräte zur
usages multiples, avec supports intégrés, utilisés en Verwendung im Freien
plein air - Récipients de cuisson avec un diamètre
supérieur à 300 mm
This European Standard was approved by CEN on 26 December 2021.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 497:2022 E
worldwide for CEN national Members.
Contents
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Classification .11
4.1 Classification of gases used .11
4.2 Classification of appliances .11
5 Constructional characteristics .12
5.1 Conversion to different gases .12
5.2 Materials .12
5.3 Ease of cleaning .12
5.4 Strength .13
5.5 Assembly .13
5.6 Stability of the appliance .13
5.6.1 Stability of the appliance on a horizontal surface .13
5.6.2 Stability of the appliance placed on a slope .13
5.6.3 Vessel stability .13
5.7 Construction of the gas circuit assembly .13
5.8 Connections .14
5.9 Blocking of wheels and castors .14
5.10 Taps .14
5.11 Control handles .15
5.11.1 Construction .15
5.11.2 Marking .15
5.12 lnjectors .16
5.13 Ignition devices .16
5.14 Flame supervision devices .16
5.15 Burners .16
5.16 Appliance incorporating a gas container .17
5.17 Appliances with compartment .17
6 Performance characteristics .18
6.1 Soundness .18
6.2 Verification of the nominal heat input .18
6.3 Flame supervision devices .18
6.4 Safety of operation .18
6.4.1 Ignition, crosslighting .18
6.4.2 Flame stability .18
6.4.3 Resistance to draught .18
6.4.4 Resistance to overheating .18
6.5 Temperatures .19
6.6 Combustion .20
6.7 Sooting.20
6.8 Rational use of energy .20
6.9 Durability of markings on the appliance .20
6.10 Overheating of the gas container .20
7 Test methods .21
7.1 General . 21
7.1.1 Test gases . 21
7.1.2 Test pressures. 22
7.1.3 Test conditions . 22
7.1.4 Characteristics of the test vessel . 22
7.2 Verification of the constructional characteristics . 23
7.2.1 Conversion to different gases . 23
7.2.2 Materials . 23
7.2.3 Ease of cleaning . 23
7.2.4 Strength . 23
7.2.5 Assembly . 23
7.2.6 Stability of the appliance . 23
7.2.7 Durability of markings. 24
7.3 Verification of the performance characteristics . 24
7.3.1 Soundness . 24
7.3.2 Nominal heat input . 24
7.3.3 Flame supervision device . 25
7.3.4 Safety of operation . 25
7.3.5 Temperatures . 26
7.3.6 Combustion . 27
7.3.7 Sooting . 28
7.3.8 Rational use of energy. 28
7.3.9 Overheating of the gas container . 29
8 Marking . 30
8.1 Appliance marking . 30
8.2 Packaging marking. 30
8.3 Instructions for installation, assembly, use and maintenance . 30
Annex A (informative) National situations . 35
A.1 General . 35
A.2 Categories marketed in the various countries and corresponding pressures . 35
A.3 Types of connection used in various countries . 37
A.4 Connection of appliances . 38
Annex B (normative) Method of calculation of the nominal heat input . 40
Annex C (normative) Composition of test gases . 42
Annex D (normative) Surface temperature probe . 43
D.1 Design . 43
D.2 Validation test . 43
D.2.1 Principle . 43
D.2.2 Procedure . 43
D.2.3 Validation . 44
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of Regulation (EU) 2016/426 aimed to be covered . 45
Bibliography . 48
European foreword
This document (EN 497:2022) has been prepared by Technical Committee CEN/TC 181 “Dedicated
liquefied petroleum gas appliances”, 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 2022, and conflicting national standards shall
be withdrawn at the latest by December 2023.
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 497:1997.
The main changes with respect to the previous edition are listed below:
— Addition of a complementary element in the title for vessel of diameter greater than 300 mm
— Extension of the scope to paella burners
— Addition of requirements and tests for appliances with gas containers compartments
— Harmonization/correction of test pressures and test conditions
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
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, Turkey and the United
Kingdom.
1 Scope
This document specifies the constructional and performance characteristics, safety specifications and
rational use of energy, relevant test methods and marking of burners burning liquefied petroleum gas
and designed to heat up vessels of diameter greater than 300 mm, containing liquids or food.
They are referred to in the body of the text as “appliances”.
This document covers appliances, generally floor standing, fitted with one or several open burners,
designed to be used outdoors and operating with the gases corresponding to the categories indicated in
4.
Appliances supplied with third family gas at other pressures than those defined in 4 are outside the field
of application of this document.
Appliances covered by this document are not connected to a flue for the products of combustion and are
not connected to the mains electrical supply.
Appliances with a nominal heat input below 1,16 kW are not subject to any requirement concerning the
rational use of energy due to their low rate.
For appliance having multiple concentric burners, burners greater than 56 cm diameter are not subject
to any requirement concerning the rational use of energy for safety reasons due to handling of the vessel.
This document does not cover LPG containers for liquefied petroleum gas, their associated regulator,
tubing and flexible hoses used for gas supply of appliances covered by this document.
NOTE Regulator, tubing and flexible hoses are covered by other standards (EN 16129, EN 16436-1+A3 and
EN 16436-2, etc.) and national regulations.
2 Normative references
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 125:2010+A1:2015, Flame supervision devices for gas burning appliances - Thermoelectric flame
supervision devices
EN 126:2012, Multifunctional controls for gas burning appliances
EN 437:2021, Test gases - Test pressures - Appliance categories
EN 549:2019, Rubber materials for seals and diaphragms for gas appliances and gas equipment
EN 1106:2010, Manually operated taps for gas burning appliances
EN 10226-1:2004, Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external
threads and parallel internal threads - Dimensions, tolerances and designation
EN 10226-2:2005, Pipe threads where pressure tight joints are made on the threads - Part 2: Taper external
threads and taper internal threads - Dimensions, tolerances and designation
EN 60584-1:2013, Thermocouples - Part 1: EMF specifications and tolerances
EN ISO 228-1:2003, Pipe threads where pressure-tight joints are not made on the threads - Part 1:
Dimensions, tolerances and designation (ISO 228-1:2000)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
multi-purpose boiling burner
one or several burners which are part of a structure ensuring both the support of burners and that of
vessels and generally used as floor standing appliance
Note 1 to entry: They incorporate one device (or devices) which ensures one set position of the burner (or
burners) in relation to the plane on which the appliance rests and to vessels. Figure 1 gives diagrams of this type of
appliance, for information.
3.2
appliance incorporating a gas container
appliance whose body or support includes a fixing or support device for a liquefied petroleum container
3.3
burner
component that allows the gas to burn
Note 1 to entry: It may be:
— non-aerated burner, in which the air for combustion is entrained entirely at the burner outlet;
— aerated burner, in which part of the air for combustion, termed primary air, is entrained by the gas flow
and mixed before the burner outlet. The remainder of the air, termed secondary air, is drawn in after the burner
outlet.
3.4
open burner
burner where the pans being heated are in direct contact with the flames
3.5
injector
component part that admits the gas into an aerated burner
Note 1 to entry: There are two types of injectors:
— calibrated injectors where the section of the outlet orifice is fixed;
— adjustable injectors where the section of the outlet orifice is variable
3.6
ignition device
device to ignite one or more burners directly or indirectly, for instance through a flash tube
Note 1 to entry: It may be:
— either electric (resistance, spark, etc.)
— or thermal (flame, pilot, etc.).
3.7
flame supervision device
device which, due to the presence of a flame on the sensing element, keeps open the gas flow to the burner
and pilot and which cuts off the gas supply to the burner and pilot in the case of extinction of the
supervised flame
3.8
detachable
which can be dismantled without using a tool
3.9
removable
which can only be removed with a tool
3.10
fittings
safety devices, controlling devices or regulating devices and sub-assemblies, incorporated into the
appliance
Note 1 to entry: For example: tap, flame supervision device, ignition device…
3.11
control handle
component designed to be operated manually so as to control the movement of a control of the appliance,
such as a tap, etc
3.12
gripping area
area of the appliance designed to be manipulated during normal use
3.13
tap
device designed to isolate a burner from the gas supply pipework and to adjust its rate during use
Note 1 to entry: There are two types of taps:
— Taps with marked positions: taps for which specific positions are presset (lighting, reduced rate, closed
position)
— Taps with variable positions: taps with a continuous setting without specific position
3.14
ignition delay time
time between the ignition of the flame supervised, the appliance being at room temperature, and the
moment when the effect of this flame is sufficient to keep the closing member open
3.15
extinction delay time
time which elapses between the extinction of the supervised flame and the closure of the gas supply
controlled by the flame supervision device
3.16
soft solder
solder for which the lowest temperature of the melting range, after application, is less than 450 °C
3.17
pan support
support placed above an open burner, and designed to support the pan being heated
3.18
reference conditions
conditions which correspond to 15 °C, 1 013, 25 mbar, unless otherwise specified
[SOURCE: EN 437:2021]
3.19
pressure couple
combination of two distinct gas distribution pressures applied by reason of the significant difference
existing between the Wobbe indices within a single family or group in which
— the higher pressure corresponds only to gases of low Wobbe index;
— the lower pressure corresponds to gases of high Wobbe index
Note 1 to entry: The pressure couple is indicated by using the symbol (⇆).
[SOURCE: EN 437:2021]
3.20
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
Note 1 to entry: A distinction is made between:
— the gross calorific value Hs: the water produced by combustion is assumed to be condensed;
— the net calorific value Hi: the water produced by combustion is assumed to be in the vapour state.
Note 2 to entry: The calorific value is expressed:
— 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.
Note 3 to entry: For the purposes of this European Standard only the gross calorific value is used.
[SOURCE: EN 437:2021 modified with additional note 3]
3.21
heat input
Q
quantity of energy used in unit time corresponding to the volume flow rate or mass flow rate, the calorific
value used being either the net or gross calorific value
Note 1 to entry: The heat input is expressed in kilowatts (kW).
[SOURCE: EN 437:2021]
3.22
nominal heat input
Q
n
value of the heat input of the appliance declared in the instructions
Note 1 to entry: Adapted from EN 437:2021
3.23
mass flow rate
M
mass of gas consumed by the appliance in unit time during continuous operation
Note 1 to entry: The mass flow rate is expressed in kilograms per hour (kg/h) or grams per hour (g/h).
[SOURCE: EN 437:2021]
3.24
volume flow rate
V
volume of gas consumed by the appliance in unit time during continuous operation
Note 1 to entry: The volume flow rate is expressed in cubic metres per hour (m /h), litres per minute (l/min),
3 3
cubic decimetres per hour (dm /h) or cubic decimetres per second (dm /s).
[SOURCE: EN 437:2021]
3.25
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
[SOURCE: EN 437:2021]
3.26
wobbe index
gross Wobbe index
W ;
s
net Wobbe index
W
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
Note 1 to entry: The Wobbe index is said to be gross (Ws) or net (Wi) according to whether the calorific value
used is the gross or net calorific value, respectively is used.
Note 2 to entry: The Wobbe index is expressed:
— 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.
[SOURCE: EN 437:2021 modified to comply with CEN rules for definition wording]
3.27
stability of flames
condition of flames when the phenomena of flame lift or light back do not occur
3.28
flame lift
phenomenon characterized by the partial or total movement of the base of the flame away from the
burner port
3.29
sooting
phenomenon appearing during incomplete combustion and characterized by a deposit of carbon on
surfaces in con tact with the flame or the products of combustion
3.30
light back
phenomenon characterized by the return of the flame inside the body of the burner
4 Classification
4.1 Classification of gases used
Gases are classified into families, groups and ranges in accordance with EN 437:2021.
According to EN 437:2021, the third family, grouping liquefied petroleum gases, covers Wobbe indexes
3 3
between 72,9 MJ/m and 87,3 MJ/m (Ws). It is subdivided into three groups, group P which covers the
3 3
range of Wobbe indexes between 72,9 MJ/m and 76,8 MJ/m , group B/P which covers the range of
3 3
Wobbe indexes between 72,9 MJ/m and 87,3 MJ/m and group B which covers the range of Wobbe
3 3
indexes between 81,8 MJ/m and 87,3 MJ/m .
NOTE Appliances of group B are not existing.
4.2 Classification of appliances
Appliances are classified into categories in accordance with EN 437:2021.
The gas supply conditions and types of connection are given in Annex A.
Appliances within the field of application of this standard belong to the following categories:
Category I3B/P
Appliance capable of using third family gases (propane, butane or their mixtures), without adjustment at
nominal operating at the prescribed supply pressure;
Category I
3P(B/P)
Appliance capable of using third family gases of group P and B/P. The gases of group P are used under
the same conditions as for category I3P. The gases of group B/P are used under the same conditions as
for category I3B/P at the prescribed supply pressure;
Category l
3+
Appliance capable of burning third family gases (butane and propane), and operating without adjustment
on the appliance using a pressure couple. For butane, appliances in this category may be used without
adjustment at the prescribed supply pressure.
Category I
3P
Appliance capable of using third family gases of group P (propane), without adjustment at the prescribed
supply pressure.
5 Constructional characteristics
5.1 Conversion to different gases
The appliance shall operate under normal supply conditions (type of gas and corresponding supply
pressure) specified in the instructions for use, without requiring any intervention on the internal gas
circuit or the adjusters of the appliance.
Adjusters shall be locked.
5.2 Materials
Elastomeric material shall comply with EN 549:2019 classes B2/H2 minimum.
The accessible parts during use or service of the appliance, the outer profile and the parts of the appliance
with which the flexible hose may be in contact shall be free of sharp corners or edges.
Non-metallic materials used as radiant elements in appliances (for example ceramics) shall resist to all
tests of this documents without alteration.
The quality and thickness of materials used in the construction of appliances shall be such that the
constructional and performance characteristics are not altered in use. In particular all the parts of the
appliance shall withstand mechanical, chemical and thermal actions to which they may be submitted
during use. In normal conditions of operation, of cleaning or of adjustment, they shall not be liable to any
alterations which might impair their safety.
Sheet-metal parts, not made of corrosion-resistant material, shall be effectively protected against
corrosion. This requirement does not apply to cooking devices.
Seals and joining compounds shall have characteristics suited to their use.
With the exception of seals, membranes, parts in contact with gas shall be made of metallic materials.
Material intended to be in contact with food shall be:
— corrosion resistant;
— non toxic.
The materials shall:
— not transfer undesirable odours, colours or taint to the food ;
— not contribute either to the contamination of food or have any adverse influence on the food.
NOTE For information see EN 1672-2:2020, Annex C
5.3 Ease of cleaning
All the parts of the appliance requiring frequent cleaning by the user (for example: cooking devices) shall
be easily accessible without having to use a tool for dismantling. It shall be possible to put these parts
back correctly and without difficulty by following the instructions for use.
Sharp corners and edges which could give rise to injury, for example during the cleaning of appliances,
shall be avoided.
It shall not be possible for the gas container, the connection tube and the parts of the gas circuit to be
soiled by the spillage of cooking juices.
The appliance shall be designed in such a way that cooking juices do not impair the safety of operation.
Any part of the appliance installed or adjusted at the factory and which does not need to be manipulated
by the user shall be protected in appropriate fashion. To this end paint may be used provided that it
withstands the heat to which it is exposed during the normal operation of the appliance.
5.4 Strength
The materials used, the construction and the assembly of the body of the appliance shall be such that the
application of a load on the appliance placed on a horizontal plane under the test conditions described in
7.2.4 shall not cause any fracture or any permanent deformation greater than 2 mm.
5.5 Assembly
All components which require assembly by the user shall be designed in such a way that their incorrect
mounting is not possible if the instructions are followed.
5.6 Stability of the appliance
5.6.1 Stability of the appliance on a horizontal surface
The appliance being placed on a horizontal surface, the tests described in 7.2.6.1 shall be carried out
without:
— the appliance falling over;
— any of its component parts becoming loose or moving in such a way that its operation is impaired;
5.6.2 Stability of the appliance placed on a slope
When testing according to 7.2.6.2, the appliance shall not fall over and the parts shall not move
inadvertently, the test vessel placed on the burner shall remain stable.
5.6.3 Vessel stability
There shall be an adequate points of support for vessels to rest level in a stable fashion on their support.
Under the test conditions described in 7.2.6.3: the test vessel shall remain stable, the appliance and the
burner shall not fall over, the parts, in particular the pan support, shall not move.
5.7 Construction of the gas circuit assembly
Holes for screws, pins, etc. placed upstream of the injector ports and intended for the assembly of
components shall not open into the space reserved for the gas ways leading to the injector.
The soundness of parts and assemblies connected to the gas circuit shall be ensured by means of metal-
to-metal joints or joints with seals (for example, flat-faced joints, 0-rings), i.e. excluding the use of any
product which ensures soundness in the threads.
For parts that do not require dismantling during normal maintenance, for example taps, injectors, the use
of appropriate thread sealing compounds is permitted.
Soft solder shall not be used to ensure the soundness of the gas circuit. However it is permitted for
internal connections within the gas circuit when they do not involve soundness.
Removable components or the threaded parts of the gas pipework which may be dismantled during
normal maintenance shall remain sound after five disconnections and reconnections in accordance with
the instructions, if necessary after changing a gasket if mentioned in the instructions. This requirement
is verified under test 7.3.1.
These requirements are verified by inspection and based on technical documentation.
5.8 Connections
Connections shall be easily accessible, it shall be possible to connect the appliance easily and safely
following the indications given in the instructions.
The entire gas supply circuit shall be at the pressure delivered by the regulator.
The end of the supply pipework shall be fitted either with (see Annex A):
— a nozzle allowing the connection of flexible tubing; the nozzle may be fixed or removable;
— a thread in accordance with EN ISO 228-1:2003 or EN 10226-1:2004 or EN 10226-2:2005.
Flexible tubing of the length recommended and connected in accordance with the instructions, shall not
come into contact with a part of the appliance whose temperature is higher than that specified in 6.5b).
These requirements are verified by inspection and measurement of dimensions.
5.9 Blocking of wheels and castors
If the appliance has wheels and/or castors to enable it to be moved, means shall be provided to prevent
accidental movement of the appliance during normal use.
This requirement is deemed to be satisfied if:
— at least one of the wheels or castors is fitted with a brake or a blocking system, or
— at least one of the support point of the appliance is not made of a wheel or a castor.
It shall not be possible for any blocking device to operate unintentionally.
These requirements are verified by inspection.
5.10 Taps
Each burner shall be controlled by a tap allowing the opening, the adjustment and closing of its supply. lt
shall only be possible to supply gas to the burner by deliberate operation.
Taps shall comply with EN 1106:2010.
Multifunctional control shall comply with EN 126:2012.
Taps shall be placed in such a way that their strength, operation, manipulation and accessibility undergo
no damage from the actions to which they are subjected in normal use. They shall be protected against
external clogging. Moreover, after testing in accordance with this standard and in particular after the
temperature test described in 7.3.5, their manipulation shall not be impaired.
Taps shall be mounted in such a way that no accidental movement relative to the gas supply circuit is
possible.
These requirements are verified by inspection before and after all the tests of this standard.
5.11 Control handles
5.11.1 Construction
It shall be obvious which burner is controlled by each control handle. They shall be so arranged relative
to one another that the movement of one handle does not cause inadvertent movement of an adjacent
one.
Control handles with different markings shall not be interchangeable on a single appliance.
Control handles shall be so designed that they can neither be fitted in the wrong position nor move by
themselves. The shape of a handle shall be such that its operation is easy.
If control handles operate by turning, the closing direction shall be clockwise.
The operation of tap handles shall not cause inadvertent movement of the appliance.
These requirements are verified by inspection.
5.11.2 Marking
5.11.2.1 General
Following requirements are verified by inspection and measurement of dimensions.
Marking shall be done in a visible, legible and durable fashion, checked according to 7.2.7.
5.11.2.2 Taps with marked positions
The closed, open and, if applicable, reduced rate positions shall be marked.
The closed position of the tap shall be marked by a full disc or circle at least 3 mm in diameter. lt shall be
the same for all the taps on a single appliance.
The identification of the closed position of each tap shall not give rise to any possibility of confusion with
the identification of an open position.
The other positions shall be identified unambiguously, preferably using the following symbols:
— full rate a large flame
position:
— reduced a small flame
rate
position:
— rate Triangle or
range
— scale 1 2 3 4 or 4
Additional markings are permitted provided that they do not create confusion for the appliances user.
The position of the handle may be used as a mark if the handle has a shape such that the tap position can
be identified unambiguously.
5.11.2.3 Taps with variable positions
For taps with variable positions, the closing direction shall be marked by an arrow whose tip points to a
full disc or circle at least 3 mm in diameter. For example see Figure 2.
Additional markings are permitted provided that they do not create confusion for the appliance's user.
5.12 lnjectors
Injectors shall be accessible, shall not be detachable and their outlet orifice shall be fixed.
All injectors shall carry an indelible means allowing their identification from the instructions and
preventing any confusion.
These requirements are verified by inspection.
5.13 Ignition devices
Where an ignition device exists, it shall ensure rapid and safe ignition.
The components of the ignition device shall be mounted to avoid damage and accidental displacement
from their correct position during transport or use. The relative positions of the ignition device and the
burner shall be designed to ensure correct operation of the assembly.
When the burner ignition device does not include a flame supervision device and does not ensure the
ignition of all the burners, the relative position of the control handles of burners and of the igniter shall
not give rise to any confusion. Moreover, the mode of ignition of burners whose ignition is not directly
carried out using an igniter (for crosslighting, for example) shall be indicated in the instructions.
In all cases gas supplied to burners which are not fitted with flame supervision devices shall ignite
automatically if a burner is already operating in the same enclosure.
These requirements are verified by inspection.
5.14 Flame supervision devices
When the appliance is equipped with a flame supervision device, it shall comply with
EN 125:2010+A1:2015.
When flame supervision devices are fitted, they shall be designed in such a way that in the case of the
failure of any of the components indispensable to their performance, the supply of the gas to the burner
controlled by the device and any pilot is cut off automatically and can only be restored by manual
intervention. They shall be so mounted as to ensure satisfactory performance.
The action to operate the flame supervision device, when carried out in accordance with the indications
given in the instructions, shall not cause inadvertent movement of the appliance.
The sensing element of a flame supervision device shall control only a single burner, except in the case
where the element controls the entire supply to the appliance.
The appliance shall not incorporate any device that allows the flame supervision device to be overridden.
During the ignition period, a passage of unlit gas is permitted under the conditions given in 6.3.
These requirements are verified by inspection.
5.15 Burners
Burners shall be designed in such a way that they cannot move inadvertently in use or during the
movement of the appliance.
It shall be easy to clean the parts of a burner which require cleaning: the parts concerned shall be either
accessible without dismantling, or easily dismantled.
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