Gas heated catering equipment - Part 2-1: Specific requirements - Open burners and wok burners

Shall be according to EN 203 1:2019, 4 with the following addition:
This European Standard applies to  open burners, non-enclosed covered burners and wok burners.

Großküchengeräte für gasförmige Brennstoffe - Teil 2-1: Spezifische Anforderungen - Offene Brenner und Wok-Brenner

Es gilt der Anwendungsbereich von EN 203-1:2021 mit folgenden Änderungen:
—   Ersetze den 2. Absatz wie folgt:
Dieses Dokument gilt für Geräte mit offenen Brennern, verdeckte Brenner mit seitlichen Öffnungen und Wok-Brenner.
—   Ersetze den 3. Absatz wie folgt:
Dieses Dokument gilt nicht für Geräte der Art B.

Appareils de cuisson professionnels utilisant les combustibles gazeux - Partie 2-1 : Exigences particulières - Brûleurs découverts et woks

Le domaine d’application de l'EN 203-1:2021 s’applique, avec les modifications suivantes :
- remplacement du 2ème paragraphe par le suivant :
Le présent document s'applique aux brûleurs découverts, aux brûleurs couverts non enfermés et aux brûleurs woks.
- remplacement du 3ème paragraphe par le suivant :
Les appareils de type B ne sont pas couverts par le présente document.

Plinske naprave za gostinstvo - 2-1. del: Posebne zahteve - Odprti gorilniki in vok gorilniki

Potrebna je skladnost s standardom EN 203-1:2019, točka 4, pri čemer se upošteva naslednje:
Ta evropski standard se uporablja za odprte gorilnike, nezaprte pokrite gorilnike in vok gorilnike.

General Information

Status
Published
Public Enquiry End Date
03-Apr-2019
Publication Date
14-Mar-2022
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Mar-2022
Due Date
16-May-2022
Completion Date
15-Mar-2022

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SLOVENSKI STANDARD
SIST EN 203-2-1:2022
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
SIST EN 203-2-1:2022 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 203-2-1:2022
---------------------- Page: 2 ----------------------
SIST EN 203-2-1:2022
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.
---------------------- Page: 3 ----------------------
SIST EN 203-2-1:2022
EN 203-2-1:2021 (E)
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

---------------------- Page: 4 ----------------------
SIST EN 203-2-1:2022
EN 203-2-1:2021 (E)
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.
---------------------- Page: 5 ----------------------
SIST EN 203-2-1:2022
EN 203-2-1:2021 (E)

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.

---------------------- Page: 6 ----------------------
SIST EN 203-2-1:2022
EN 203-2-1:2021 (E)
1 Scope
The scope of EN 203-1:2021 applies, with the following modifications:
— replace the 2 paragraph with the following:

This document applies to open burners, non-enclosed covered burners and wok burners appliances.

— 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.

---------------------- Page: 7 ----------------------
SIST EN 203-2-1:2022
EN 203-2-1:2021 (E)
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.
---------------------- Page: 8 ----------------------
SIST EN 203-2-1:2022
EN 203-2-1:2021 (E)
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 sufficient water level in order

to maintain the boiling.

When a burner can operate covered or uncovered, the test is carried out using the arrangement as uncovered

burner.
7.4.3 Ignition - cross- lighting - flame stability
7.4.3.1 General
Shall be according to EN 203-1:2021, 7.4.3.1 with the following addition:

The tests are carried out with and without pans. For open burners, the pans are those described in Table 101

and Figure 101. For wok burners, the pan indicated in the instructions for use shall be used.

---------------------- Page: 9 ----------------------
SIST EN 203-2-1:2022
EN 203-2-1:2021 (E)

In the case of a possible covering of several burners by the same pan, the tests are carried out with the largest

pan recommended in the instructions for use.
Table 101 — Pans to be used according to the heat input of the burner
Internal diameter Input on net calorific Mass of water to be
value introduced
kW kg
22 < 1,79 3,7
24 2,13 4,9
26 2,50 6,1
28 2,91 7,8
30 3,33 9,4
32 3,80 11,8
34 4,28 13,6
38 5,35 18,7
42 6,53 24,9
46 7,84 32,4
50 9,26 41,2
60 ≥ 12 50

If the heat input value is not equal to ones listed in this Table but included in an

interval, the pan with greater diameter shall be used for the tests, if not differently

indicated in the standard.

NOTE In case of a greater burner diameter or greater plate hole than pan diameter corresponding to its heat input,

the pan having the smallest diameter that can cover full burner and can be accommodated is used.

7.4.3.3 Influence of wind and draughts
Shall be according to EN 203-1:2021, 7.4.3.3 with the following addition:

When a reduced heat input exists, the test shall be repeated at the minimum heat input.

7.6 Combustion
7.6.1 General
Shall be according to EN 203-1:2021, 7.6.1 with the following additions:
7.6.1.101 Open burners

Each burner supplied and adjusted under the conditions of 7.6.2.1 of EN 203-1:2021, is tested in sequence,

covered by the pan, as defined in Table 101 and Table 102 and Figure 101. Other burners are switched off.

The products of combustion shall be sampled using the corresponding ring defined in Table 103 and

Figure 102.

If in this position the flame comes in contact with the ring, the height of the ring is adjusted to avoid

disturbance of the flame, and to conserve the level of sampling of CO similar to that defined in EN 203-1:2021.

The burners next to the burner under test shall be covered by pans with the biggest possible diameter.

Distance between the pans and between the pans and the rings shall be at least 10 mm.

---------------------- Page: 10 ----------------------
SIST EN 203-2-1:2022
EN 203-2-1:2021 (E)
If the instructions specify a smaller pan support for use
...

SLOVENSKI STANDARD
oSIST prEN 203-2-1:2019
01-marec-2019

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: prEN 203-2-1
ICS:
97.040.20 âWHGLOQLNLGHORYQLSXOWL Cooking ranges, working
SHþLFHLQSRGREQLDSDUDWL tables, ovens and similar
appliances
oSIST prEN 203-2-1:2019 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN 203-2-1:2019
---------------------- Page: 2 ----------------------
oSIST prEN 203-2-1:2019
DRAFT
EUROPEAN STANDARD
prEN 203-2-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2019
ICS 97.040.20 Will supersede 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 draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 106.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations

which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 203-2-1:2019 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 203-2-1:2019
prEN 203-2-1:2019 (E)
Contents Page

European Foreword ...................................................................................................................................................... 5

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

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

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

4 Classification ..................................................................................................................................................... 6

5 Constructional requirements ..................................................................................................................... 6

5.1 General ................................................................................................................................................................ 6

5.1.1 Conversion to different gases ..................................................................................................................... 6

5.1.2 Materials and methods of construction .................................................................................................. 6

5.1.3 Use, cleaning and maintenance .................................................................................................................. 6

5.1.4 Gas connections ............................................................................................................................................... 7

5.1.5 Soundness .......................................................................................................................................................... 7

5.1.6 Supply of combustion air and evacuation of combustion products .............................................. 7

5.1.7 Flame visibility ................................................................................................................................................. 7

5.1.8 Electrical safety ................................................................................................................................................ 7

5.1.9 Construction requirements for gas cylinder compartment ............................................................. 7

5.2 Particular requirements for components in the gas circuit ............................................................ 7

5.2.1 General ................................................................................................................................................................ 7

5.2.2 Gas rate control and shut-off device ......................................................................................................... 7

5.2.3 Auxiliary equipment ...................................................................................................................................... 8

5.2.4 Burners ............................................................................................................................................................... 8

5.2.5 Gas rate adjusters ........................................................................................................................................... 8

5.3 Particular requirements ............................................................................................................................... 8

5.3.1 Food spillage ..................................................................................................................................................... 8

5.3.2 Stability and mechanical safety ................................................................................................................. 8

5.3.3 Safety from fire risk ........................................................................................................................................ 8

5.3.4 Appliances connected to water mains ..................................................................................................... 9

5.3.5 Pressurized parts ............................................................................................................................................ 9

5.3.6 Lack of heat-bearing fluid ............................................................................................................................ 9

6 Performance requirements ......................................................................................................................... 9

6.1 Soundness .......................................................................................................................................................... 9

6.1.1 Soundness of the gas circuit ........................................................................................................................ 9

6.1.2 Soundness of combustion product circuit of type B appliances ..................................................... 9

6.2 Obtaining the gas rate.................................................................................................................................... 9

6.2.1 Nominal heat input (Qn) ................................................................................................................................ 9

6.2.2 Full calorific rate ............................................................................................................................................. 9

6.2.3 Reduced heat input ......................................................................................................................................... 9

6.2.4 Ignition burner heat input ........................................................................................................................... 9

6.3 Safety of operation .......................................................................................................................................... 9

6.3.1 Burners ............................................................................................................................................................... 9

6.3.2 Temperature limits ..................................................................................................................................... 10

6.3.3 Ignition – cross-lighting - flame stability ............................................................................................. 10

6.3.4 Combustion products discharge safety devices for type B appliances ............................... 10

11BS

6.3.5 Pre-purge ........................................................................................................................................................ 10

6.4 Influence of burners on each other ....................................................................................................... 10

6.5 Auxiliary equipment ................................................................................................................................... 11

6.5.1 Flame shut off device .................................................................................................................................. 11

6.5.2 Ignition device ............................................................................................................................................... 11

---------------------- Page: 4 ----------------------
oSIST prEN 203-2-1:2019
prEN 203-2-1:2019 (E)

6.6 Air proving device ........................................................................................................................................ 11

6.6.1 General ............................................................................................................................................................. 11

6.6.2 Supervision of the combustion air or combustion products rate ............................................... 11

6.6.3 Supervision of the combustion air pressure or combustion products pressure ................... 11

6.6.4 Air/gas ratio controls .................................................................................................................................. 11

6.7 Combustion ..................................................................................................................................................... 11

6.7.1 All appliances (in calm air) ....................................................................................................................... 11

6.7.2 Special conditions ......................................................................................................................................... 11

6.7.3 Abnormal use ................................................................................................................................................. 11

6.8 Auxiliary energy ............................................................................................................................................ 12

6.8.1 Electrical energy fluctuation .................................................................................................................... 12

6.8.2 Electrical energy shut off ........................................................................................................................... 12

6.8.3 Other auxiliary energy ................................................................................................................................ 12

6.9 Rational use of energy................................................................................................................................. 12

6.10 Operating requirements - Temperature of the LPG cylinder and its compartment ............ 12

6.10.1 Temperature of the walls of the compartment .................................................................................. 12

6.10.2 Temperature of the LPG cylinder ........................................................................................................... 12

7 Test conditions .............................................................................................................................................. 12

7.1 General ............................................................................................................................................................. 12

7.1.1 Characteristics of the test gases .............................................................................................................. 12

7.1.2 Requirements for making up test gases ............................................................................................... 12

7.1.3 Test room ......................................................................................................................................................... 12

7.1.4 Preparation of the appliance .................................................................................................................... 12

7.1.5 Practical method of test.............................................................................................................................. 12

7.1.6 Test pressures................................................................................................................................................ 13

7.1.7 Carrying out the tests .................................................................................................................................. 13

7.2 Soundness ........................................................................................................................................................ 13

7.2.1 Soundness of the gas circuit ...................................................................................................................... 13

7.2.2 Soundness of the combustion circuit and correct evacuation of the combustion products

for type B appliances ................................................................................................................................... 13

7.3 Obtaining gas rates ...................................................................................................................................... 13

7.3.1 General ............................................................................................................................................................. 13

7.3.2 Nominal heat input ...................................................................................................................................... 13

7.3.3 Full rate ............................................................................................................................................................ 13

7.3.4 Reduced rate .................................................................................................................................................. 14

7.4 Operational safety ........................................................................................................................................ 14

7.4.1 Burners ............................................................................................................................................................. 14

7.4.2 Limit temperatures ...................................................................................................................................... 14

7.4.3 Ignition - cross- lighting - flame stability ............................................................................................. 14

Table 3 – Pans to be used according to the heat input of the burner ....................................................... 15

7.5 Auxiliary equipment .................................................................................................................................... 16

7.5.1 Flame shut off device ................................................................................................................................... 16

7.5.2 Ignition device ............................................................................................................................................... 16

7.6 Combustion ..................................................................................................................................................... 16

7.6.1 General ............................................................................................................................................................. 16

7.6.2 Tests carried out under normal conditions ........................................................................................ 16

Table 4 – Characteristics of pans required for combustion tests .............................................................. 17

Table 5 – Sampling of combustion products by rings .................................................................................... 18

7.6.3 Specific test for type B appliances .......................................................................................................... 19

7.6.4 Test with sooting limit gas ........................................................................................................................ 19

7.7 Air-proving device ........................................................................................................................................ 19

7.7.1 General ............................................................................................................................................................. 19

7.7.2 Supervision of the combustion air or the combustion products rate ........................................ 19

7.7.3 Supervision of the combustion air or the combustion products pressure .............................. 19

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7.8 Special tests .................................................................................................................................................... 19

7.8.1 Stability and mechanical safety .............................................................................................................. 19

7.8.2 Pressurized parts ......................................................................................................................................... 19

7.8.3 Lack of heat bearing fluid .......................................................................................................................... 19

7.8.4 Spillage ............................................................................................................................................................. 20

7.9 Test method - Overheating of the LPG cylinder and its compartment ...................................... 20

7.10 Rational use of energy ................................................................................................................................ 20

7.10.1 General ............................................................................................................................................................. 20

7.10.2 Test .................................................................................................................................................................... 20

8 Marking and instructions .......................................................................................................................... 21

8.1 General requirements for marking and instructions ..................................................................... 21

8.2 Marking on the appliance .......................................................................................................................... 21

8.2.1 Data plates, labels and packaging .......................................................................................................... 21

8.2.2 Additional marking on the appliance and packaging ..................................................................... 21

8.3 Instructions for installation and adjustment ..................................................................................... 21

8.3.1 Requirements for installation and adjustment ................................................................................. 21

8.3.2 Additional requirements for installation and adjustment............................................................ 22

8.4 Instructions for use and maintenance .................................................................................................. 22

8.4.1 Requirements for instructions for use and maintenance ............................................................. 22

8.4.2 Additional requirements for instructions for use and maintenance ........................................ 22

Figure 8 - Characteristics of the pans required for the tests ...................................................................... 22

Figure 9 - Sampling of combustion products by rings - Principles of design ........................................ 23

Annex A (informative) National situations ...................................................................................................... 24

Annex B (normative) Use of symbols on appliances and packaging ....................................................... 25

Annex C (informative) Trilingual list of appliances in the scope of prEN 203-1 and

corresponding Part 2 .................................................................................................................................. 26

Annex D (informative) Composition of the gas circuit ................................................................................. 27

Annex E (normative) Material in contact with food ...................................................................................... 28

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

requirements of Regulation (EU) 2016/426 aimed to be covered ............................................. 29

Table ZA.1 — Correspondence between this European Standard and Annex I of Regulation (EU)

2016/426 ........................................................................................................................................................ 29

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European Foreword

This document (prEN 203-2-1:2019) has been prepared by Technical Committee CEN/TC 106 “Large kitchen

appliances using gaseous fuels”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 203-2-1:2005.

This document has been prepared under a standardization request (under drafting) 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.

The technical changes in comparison to the previous edition are:
— clarification of the scope according to EN 203-1,
— modification of the definition of wok burner in 3. 2.10

— clarification of supply of combustion air and evacuation of combustion products in 5.1.6;

— update of rational use of energy in 6.9;

— modification of the text in 7.1.5.3 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 7.6.2.3;

— modification of the test 7.6.2.5 for abnormal use(nominal heat output replaced by minimum heat input).

— addition of a pan of 60 cm internal diameter in tables 3, 4 and 5;

— deletion of the adjustment of the sequential function control (moved to EN 203-1);

— clarification of the rational use of energy (7.10) and consistency with EN 203-1 for ambient temperature

during testing;
— updating of clause 8 on marking and instructions;

This document is used in conjunction with EN 203-1 “Gas Heated Catering Equipment – Part 1: General

safety rules”. This document specifies particular requirements for open and wok burners.

Enclosed and solid tops are covered by EN 203-2-9.

Subclauses and Figures which are additional to those in EN 203-1 are numbered continuously to part 1 (RI).

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1 Scope
According to prEN 203-1:2019, 4 with the following addition:

This document applies to open burners, non-enclosed covered burners and wok burners.

2 Normative references
According to prEN 203-1:2019, 4 with the following additions:
prEN 203-1:2019, Gas heated catering equipment - Part 1: General safety rules

EN 631-1:1993, Materials and articles in contact with foodstuffs - Catering containers - Part 1: Dimensions of

containers
3 Terms and definitions
According to prEN 203-1:2019, with the following addition:
3.2.2.8
open burner

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
3.2.2.9
non enclosed covered burner

burner 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) and the burner is designed so that partial visibility of

the flame is possible in normal operation
EXAMPLE A non-enclosed 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.
3.2.2.10
wok burner
open burner designed to be used with round-bottomed cooking vessels (wok)
4 Classification
Shall be according to prEN 203-1:2019, 4.
5 Constructional requirements
5.1 General
5.1.1 Conversion to different gases
Shall be according to prEN 203-1:2019, 5.1.1.
5.1.2 Materials and methods of construction
Shall be according to prEN 203-1:2019, 5.1.2.
5.1.3 Use, cleaning and maintenance
Shall be according to prEN 203-1:2019, 5.1.3.
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5.1.4 Gas connections
Shall be according to prEN 203-1:2019, 5.1.4.
5.1.5 Soundness
Shall be according to prEN 203-1:2019, 5.1.5.
5.1.6 Supply of combustion air and evacuation of combustion products
5.1.6.1 General
Shall be according to prEN 203-1:2019, 5.1.6.1 with the following addition

Obstruction by means of the pan used of the combustion air inlets and of the evacuation of the products of

combustion shall be made impossible.
5.1.6.2 Appliances equipped with a fan
Shall be according to prEN 203-1:2019, 5.1.6.2.
5.1.6.3 Appliances fitted with an air/gas ratio control device
Shall be according to prEN 203-1:2019, 5.1.6.3.

5.1.6.4 Appliances not intended to be connected to an evacuation duct of the combustion products

(Type A)
Shall be according to prEN 203-1:2019, 5.1.6.4.

5.1.6.5 Appliances intended to be connected to a an evacuation duct of the combustion products

(Type B)
Shall be according to EN 203-1:2019, 5.1.6.5.
5.1.7 Flame visibility
5.1.7.1 Verification by the installer
Shall be according to prEN 203-1:2019, 5.1.7.1.
5.1.7.2 Confirmation by the user
Shall be according to prEN 203-1:2019, 5.1.7.2.
5.1.8 Electrical safety
Shall be according to prEN 203-1:2019, 5.1.8.
5.1.9 Construction requirements for gas cylinder compartment
Shall be according to prEN 203-1:2019, 5.1.9.
5.2 Particular requirements for components in the gas circuit
5.2.1 General
Shall be according to prEN 203-1:2019, 5.2.1.
5.2.2 Gas rate control and shut-off device
5.2.2.1 General
Shall be according to prEN 203-1:2019, 5.2.2.1.
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