EN 203-2-1:2021

SLOVENSKI STANDARD
01-april-2022
Nadomešča:
SIST EN 203-2-1:2015
Plinske naprave za gostinstvo - 2-1. del: Posebne zahteve - Odprti gorilniki in vok
gorilniki
Gas heated catering equipment - Part 2-1: Specific requirements - Open burners and
wok burners
Großküchengeräte für gasförmige Brennstoffe - Teil 2-1: Spezifische Anforderungen -
Offene Brenner und Wok-Brenner
Appareils de cuisson professionnels utilisant les combustibles gazeux - Partie 2-1 :
Exigences particulières - Brûleurs découverts et woks
Ta slovenski standard je istoveten z: EN 203-2-1:2021
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 203-2-1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 97.040.20 Supersedes EN 203-2-1:2014
English Version
Gas heated catering equipment - Part 2-1: Specific
requirements - Open burners and wok burners
Appareils de cuisson professionnels utilisant les Großküchengeräte für gasförmige Brennstoffe - Teil 2-
combustibles gazeux - Partie 2-1 : Exigences 1: Spezifische Anforderungen - Offene Brenner und
particulières - Brûleurs découverts et woks Wok-Brenner
This European Standard was approved by CEN on 3 October 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 203-2-1:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Classification . 6
5 Constructional requirements . 6
6 Performance requirements . 6
7 Test conditions . 7
8 Marking and instructions . 16
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Regulation (EU) 2016/426 aimed to be covered . 19
Bibliography . 22

European foreword
This document (EN 203-2-1:2021) has been prepared by Technical Committee CEN/TC 106 “Large kitchen
appliances using gaseous fuels”, 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 June 2022, and conflicting national standards shall be withdrawn at
the latest by June 2022.
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 203-2-1:2014.
The main changes compared to the previous edition are the following:
— alignment with EN 203-1:2021;
— clarification of the scope according to EN 203-1:2021;
— modification of the definition of wok burner in 3.2.2.103;
— clarification of supply of combustion air and evacuation of combustion products in 5.1.6;
— update the requirement of rational use of energy in 6.9;
— modification of the text in 7.1.5.2 Conditions of supply and adjustment of the appliances;
— addition of a general subclause on 7.4.2 Limit temperatures;
— clarification of influence of wind and draughts in 7.4.3.3;
— clarification on the pan to be used for open burners in 7.6.1.101;
— modification of the test 7.6.101 for abnormal use;
— addition of a pan of 60 cm internal diameter in Table 101, Table 102 and Table 103;
— deletion of the adjustment of the sequential function control (moved to EN 203-1:2021);
— clarification of the test for rational use of energy (7.10) and consistency with EN 203-1:2021 for ambient
temperature during testing;
— updating of Clause 8 on marking and instructions.
This document is used in conjunction with EN 203-1:2021 “Gas heated catering equipment – Part 1: General
safety requirements”. This document specifies particular requirements for open and wok burners.
Enclosed and solid tops are covered by EN 203-2-9:2005.
Where a particular subclause of EN 203-1:2021 is not mentioned in this part 2, the subclause of
EN 203-1:2021 applies as far as is reasonable. Where this document states "addition", "modification" or
"replacement", the relevant text of EN 203-1:2021 is adapted accordingly.
Subclauses, Figures and Tables which are additional to those in EN 203-1:2021 are numbered starting with
101.
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
The scope of EN 203-1:2021 applies, with the following modifications:
nd
— replace the 2 paragraph with the following:
This document applies to open burners, non-enclosed covered burners and wok burners appliances.
rd
— replace the 3 paragraph with the following:
This document does not cover appliances of type B.
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 203-1:2021, Gas heated catering equipment - Part 1: General safety requirements
EN 631-1:1993, Materials and articles in contact with foodstuffs - Catering containers - Part 1: Dimensions of
containers
EN 631-2:1999, Materials and articles in contact with foodstuffs - Catering containers - Part 2: Dimensions of
accessories and supports
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 203-1:2021 and the following apply.
ISO and IEC maintain terminological 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/
Clause 3 of EN 203-1:2021 applies with the following additions:
3.101 Terminology referring to type of appliances
3.101.1
open burner
appliance with hot plate burner for which the pan is heated directly by the flame and the products of
combustion are evacuated directly to atmosphere without following a specific way
3.101.2
non-enclosed covered burner
appliance with burner, designed so that partial visibility of the flame is possible in normal operation, and for
which the pan or the foodstuffs being heated is screened from direct flame contact by the interposition of a
surface on which they rest and where all products of combustion are evacuated directly to the atmosphere
(e.g. around the periphery of the plate)
Note 1 to entry: A non-enclosed covered burner may be:
—  permanent, i.e. designed to be used only with the plate in position;
—  dual purpose, i.e. designed so that it may also be used as an open burner after removal of the removable plate.
3.101.3
wok burner
appliance with open burner designed to be used with round-bottomed cooking vessels (wok)
4 Classification
Clause 4 of EN 203-1:2021 applies.
5 Constructional requirements
5.1 General
5.1.6 Supply of combustion air and evacuation of combustion products
5.1.6.1 General
Shall be according to EN 203-1:2021, 5.1.6.1 with the following addition:
Obstruction of the combustion air inlets and of the evacuation of the products of combustion by the pan used
shall be made impossible.
5.3 Particular requirements
5.3.1 Food spillage
Shall be according to EN 203-1:2021, 5.3.1 with the following addition:
After the test described in 7.8.101, the burner shall be able to be re-ignited.
Possible food spillage shall not be able to enter in the burner or block the burner air inlet. Yellow tips and
unstable flames are allowed while the spilled water is still present but shall not be permanent.
5.3.2 Stability and mechanical safety
Shall be according to EN 203-1:2021, 5.3.2 with the following addition:
The griddles and supports shall ensure the stability of pans which are intended to be used as stated in the user
instructions, in accordance with 7.8.1.
There shall be an adequate number of points of support for vessels to rest level in a stable fashion on the
supports of each of the uncovered burners.
5.3.3 Safety from fire risk
Shall be according to EN 203-1:2021, 5.3.3 with the following addition.
Compliance is checked by the tests of 7.4.2 and 7.8.101.
6 Performance requirements
6.7 Combustion
Shall be according to EN 203-1:2021, 6.7 with the following addition.
6.7.101 Abnormal use
The CO concentrations in the dry, air-free products of combustion shall not exceed 0,20 % when the appliance
is supplied with the reference gases under the conditions of 7.6.101.
6.9 Rational use of energy
Shall be according to EN 203-1:2021, 6.9 with the following addition:
6.9.101 Open burners
Under the test conditions of 7.10.101, the RUI (rational use of energy index) shall not be less than 50 %. The
measured value shall be reported in the technical documentation.
6.9.102 Wok burners and non-enclosed covered burners
Under the test conditions of 7.10.102, the RUI shall be less of 0,8 kWh/kg. The measured value shall be
reported in the technical documentation.
7 Test conditions
7.1 General
7.1.5 Practical method of test
7.1.5.2 Conditions of supply and adjustment of the appliances
Shall be according to EN 203-1:2021, 7.1.5.2 with the following addition:
For appliances fitted with griddles or pan-supports suitable for more than one position, the tests for
combustion (see 7.6) and rational use of energy (see 7.10) are carried out in every possible position.
For dual purpose non-enclosed covered burners, the tests for combustion (see 7.6) and rational use of energy
(see 7.10) are carried out with and without the plate.
7.4 Operational safety
7.4.2 Limit temperatures
7.4.2.1 General
Shall be according to EN 203-1:2021, 7.4.2.1 with the following addition:
Each burner is covered with pan described in Table 101 and Figure 101. A distance of at least 10 mm shall be
kept between the side surface of each pan and all other pans and between the side surface of each pan and any
test panel. If this arrangement is not possible with the pans mentioned above for the heat input of the burners,
the test shall be done with the pan having the largest diameter that can be accommodated. In this case, and if
necessary, the input of the burner is adjusted, with the corresponding control knob, in order not to have flames
touching the sides of the pans.
During the test, the pan is covered by its lid and hot water is added to ensure a s
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