FprEN 484

Specification for dedicated liquefied petroleum gas appliances - Independent stoves, including those incorporating a grill for outdoor use

This document specifies constructional and performance characteristics, safety specifications and rational use of energy, relevant test methods and marking of independent stoves, side burners, covered burners, open burners, griddles, radiant grills, burning liquefied petroleum gas, referred to in the body of the text as "appliances".
This document covers appliances, used outdoors and operating with the gases of the third family according to EN 437:2018.
Appliances used in leisure vehicles and boats are outside the field of application of this standard.
Independent stove burners, whose nominal heat input is below 1,16 kW, griddles and radiant grills, are not subject to any special requirement concerning the rational use of energy due to their low rate and their use for short periods of time.
This document does not state all requirements for appliances of other nature incorporating a stove (for example barbecues are not covered by this standard but a side burner of a barbecue is covered by this standard).
This document does not cover regulators that are used with those appliances.

Festlegungen für Flüssiggasgeräte - Flüssiggasbetriebene Kochgeräte einschließlich solcher mit Grillteilen zur Verwendung im Freien

Dieses Dokument legt Konstruktions- und Leistungsmerkmale, Sicherheitsanforderungen und rationelle Energienutzung sowie maßgebende Prüfverfahren und die Kennzeichnung von flüssiggasbetriebenen Kochgeräten, Seitenbrennern, verdeckten Brennern, offenen Brennern, Kontaktgrills, Strahlungsgrills, im Haupttext als „Geräte“ bezeichnet, fest.
Dieses Dokument gilt für Geräte zur Verwendung im Freien, betrieben mit den Gasen der dritten Familie (siehe EN 437:2021 für weitere Informationen).
Geräte zum Einsatz in Freizeitfahrzeugen und Booten fallen nicht in den Anwendungsbereich dieser Norm.
Brenner mit einer Nennwärmebelastung unter 1,16 kW, Kontaktgrills und Strahlungsgrills unterliegen aufgrund ihrer geringen Leistung und der kurzen Betriebszeiten keinen besonderen Anforderungen an die rationelle Energienutzung.
Dieses Dokument beinhaltet nicht alle Anforderungen an Geräte anderer Art mit integrierter Kochfläche (zum Beispiel behandelt diese Norm keine Grillgeräte, ein Seitenbrenner eines Grillgeräts hingegen wird von dieser Norm abgedeckt).
Dieses Dokument gilt nicht für Regelgeräte, die mit diesen Geräten verwendet werden.

Spécifications pour les appareils fonctionnant exclusivement aux gaz de pétrole liquéfiés - Réchauds indépendants, équipés ou non d'un grilloir, utilisés en plein air

Le présent document a pour but de définir les caractéristiques de construction et de fonctionnement, les spécifications de sécurité et l'utilisation rationnelle de l'énergie, les méthodes d'essai afférentes ainsi que le marquage des réchauds indépendants, brûleurs latéraux, brûleurs couverts, brûleurs découverts, grilloirs par contact, grilloirs par rayonnement, fonctionnant aux gaz de pétrole liquéfiés, désignés dans l'ensemble du texte par « appareils ».
Le présent document couvre les appareils utilisés en plein air et fonctionnant avec les gaz de la 3e famille (voir l'EN 437:2021 pour plus d'informations).
Les appareils utilisés dans les véhicules de loisirs et les bateaux sont exclus du domaine d'application de la présente norme.
Les brûleurs de réchauds indépendants dont le débit calorifique nominal est inférieur à 1,16 kW, de même que les grilloirs et les grills radiants, compte tenu de leur faible puissance et de leur utilisation sur de courtes durées, ne font l'objet d'aucune exigence particulière en matière d'utilisation rationnelle de l'énergie.
Le présent document ne définit pas l'ensemble des exigences applicables aux équipements intégrés d'une autre nature (par exemple, les barbecues ne sont pas couverts par cette norme, mais un brûleur latéral d'un barbecue est couvert par cette norme).
Le présent document ne couvre pas les détendeurs utilisés avec ces appareils.

Specifikacija za plinske aparate na utekočinjeni naftni plin - Prostostoječi kuhalniki, vključno z žarom za zunanjo uporabo

General Information

• Status: Not Published
• Publication Date: 17-Mar-2024
• ICS: 97.040.20 - Cooking ranges, working tables, ovens and similar appliances
• Technical Committee: CEN/TC 181 - Dedicated liquified petroleum gas appliances
• Drafting Committee: CEN/TC 181/WG 1 - Flueless space heaters
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Start Date: 18-Sep-2023
• Due Date: 14-Sep-2023
• Completion Date: 18-Sep-2023
• Directive: 2016/426 - REGULATION (EU) 2016/426 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 9 March 2016 on appliances burning gaseous fuels and repealing Directive 2009/142/EC
• Mandate: M/595 - [C(2023)4789] - Commission Implementing Decision of 20.7.2023 on a standardisation reques as regards gas appliances and fittings in support of Regulation (EU) 2016/426 of the European Parliament and of the Council
• Mandate: M/BC/CEN/89/6 - Standardization request to CEN concerning appliances burning gaseous fuels
• Ref Project: oSIST prEN 484:2022 - Specification for dedicated liquefied petroleum gas appliances - Independent stoves, including those incorporating a grill for outdoor use

Relations

• Revises: EN 484:2019 - Specification for dedicated liquefied petroleum gas appliances - Independent stoves, including those incorporating a grill for outdoor use
• Effective Date: 08-Dec-2021

Overview - FprEN 484 (Specification for dedicated liquefied petroleum gas appliances)

FprEN 484 is a CEN draft standard specifying requirements for dedicated liquefied petroleum gas (LPG) appliances - principally independent stoves and associated burners and grills intended for outdoor use. It covers constructional and performance characteristics, safety requirements, rational use of energy, relevant test methods and marking. The standard applies to appliances operating with gases of the third family (per EN 437:2018) and excludes appliances for leisure vehicles, boats and separate regulators. Low‑power burners (< 1,16 kW), griddles and radiant grills are exempt from energy‑efficiency requirements due to short‑term use.

Key topics and technical requirements

The document organizes technical requirements and test methods for outdoor LPG stoves and burners, including:

• Constructional characteristics: materials, assembly, ease of cleaning, stability (horizontal and on slopes), strength and manipulation of griddles and grills.
• Gas circuit and connections: design, soundness, injectors and connections to ensure safe gas supply.
• Controls and fittings: taps, control handles, ignition devices and flame supervision devices with marking and durability requirements.
• Burner performance: open and covered burners, side burners, griddles and radiant grills - requirements for flame stability, resistance to draught, ignition/crosslighting and resistance to liquid spillage.
• Safety limits: temperature limits, overheating of gas containers (vapour pressure considerations) and measures to prevent unsafe operation.
• Combustion and emissions: combustion testing, sooting and condensation checks.
• Rational use of energy: performance metrics and test conditions for burners (with specific exemptions for low‑rate devices).
• Testing and verification: specified test gases, test pressures, test procedures and sampling devices for verifying constructional and performance characteristics.
• Marking and documentation: appliance and packaging marking, user instructions, and durability of marks.

Applications and who uses this standard

FprEN 484 is intended for:

• Manufacturers of outdoor LPG independent stoves, side burners and grills for product design, safety compliance and CE marking preparation.
• Test laboratories and conformity assessment bodies conducting performance and safety tests.
• Product designers and safety engineers implementing construction and combustion safety requirements.
• Procurement and regulatory authorities specifying accepted appliance standards for outdoor catering, camping, catering hire and outdoor hospitality.
• Installers and maintenance personnel using the marking and instructions required by the standard.

Related standards

• EN 437:2018 - Classification of gases and test gases (referenced for third‑family gases)
• EN 484:2019 - earlier version to be superseded by this draft

Keywords: FprEN 484, EN 484, liquefied petroleum gas appliances, independent stoves, outdoor LPG stoves, LPG safety standards, test methods, energy efficiency, appliance marking.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2022
Specifikacija za plinske aparate na utekočinjeni naftni plin - Prostostoječi
kuhalniki, vključno z žarom za zunanjo uporabo
Specification for dedicated liquefied petroleum gas appliances - Independent stoves,
including those incorporating a grill for outdoor use
Festlegungen für Flüssiggasgeräte - Flüssiggasbetriebene Kochgeräte einschließlich
solcher mit Grillteilen zur Verwendung im Freien
Spécifications pour les appareils fonctionnant exclusivement aux gaz de pétrole liquéfiés
- Réchauds indépendants, équipés ou non d'un grilloir, utilisés en plein air
Ta slovenski standard je istoveten z: prEN 484
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.

DRAFT
EUROPEAN STANDARD
prEN 484
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2022
ICS Will supersede EN 484:2019
English Version
Specification for dedicated liquefied petroleum gas
appliances - Independent stoves, including those
incorporating a grill for outdoor use
Spécifications pour les appareils fonctionnant Festlegungen für Flüssiggasgeräte -
exclusivement aux gaz de pétrole liquéfiés - Réchauds Flüssiggasbetriebene Kochgeräte einschließlich solcher
indépendants, équipés ou non d'un grilloir, utilisés en mit Grillteilen zur Verwendung im Freien
plein air
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 181.
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, 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.
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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 484:2022 E
worldwide for CEN national Members.

prEN 484:2022 (E)
Contents Page
European foreword . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Classification. 14
4.1 Classification of gases used . 14
4.2 Classification of appliances . 14
5 Constructional characteristics . 15
5.1 Operating with different gases . 15
5.2 Materials . 15
5.3 Ease of cleaning and maintenance . 15
5.4 Manipulation of grills . 16
5.4.1 Griddles . 16
5.4.2 Radiant grills . 16
5.5 Strength . 16
5.6 Assembly . 16
5.7 Stability . 16
5.7.1 Stability of the appliance on a horizontal plane . 16
5.7.2 Stability of the appliance placed on a slope . 16
5.7.3 Vessel stability . 16
5.8 Construction of the gas circuit assembly . 17
5.9 Connections . 17
5.10 Locking of wheels and castors . 17
5.11 Taps . 18
5.12 Control handles . 18
5.12.1 Construction . 18
5.12.2 Marking . 18
Figure 1 — Marking for a tap with variable positions . 19
5.13 Injectors . 19
5.14 Ignition devices. 19
5.15 Flame supervision devices . 19
5.16 Burners . 20
5.17 Appliance incorporating a gas container . 20
5.18 Durability of markings . 20
5.19 Auxiliary energy . 20
6 Performance characteristics. 21
6.1 Soundness . 21
6.2 Verification of the nominal heat input . 21
6.3 Flame supervision devices . 21
6.4 Safety of operation . 21
6.4.1 Ignition, crosslighting . 21
6.4.2 Flame stability . 21
6.4.3 Resistance to draught . 21
6.4.4 Resistance to overheating . 21
prEN 484:2022 (E)
6.4.5 Soundness of burner parts . 21
6.4.6 Resistance to liquid spillage . 22
6.5 Temperatures . 22
6.6 Overheating of the gas container . 23
Table 1 —Values for vapour pressure rise inside the container . 23
6.7 Combustion . 23
6.8 Sooting - condensation . 23
6.9 Rational use of energy: Performance of the burners . 23
6.9.1 Open burners . 23
6.9.2 Covered burners . 23
7 Test methods . 24
7.1 General . 24
7.1.1 Test gases . 24
Table 2 —Test gases corresponding to the appliance’s category . 24
Table 3 —Characteristics of test gases (dry gas, at 15 °C at 1 013,25 mbar) . 24
7.1.2 Test pressures. 25
Table 4 —Test pressures (in millibars) . 25
7.1.3 Test procedures . 25
7.2 Verification of the constructional characteristics . 25
7.2.1 Conversion to different gases . 25
7.2.2 Materials . 25
7.2.3 Ease of cleaning and maintenance. 25
7.2.4 Manipulation of grills . 25
7.2.5 Strength . 26
7.2.6 Assembly . 26
7.2.7 Stability of the appliance . 26
7.2.8 Soundness of the gas circuit assembly . 27
7.2.9 Connections . 27
7.2.10 Locking of wheels and castors . 27
7.2.11 Taps . 27
7.2.12 Control handles . 27
7.2.13 Injectors . 27
7.2.14 Ignition devices . 27
7.2.15 Flame supervision devices . 27
7.2.16 Burners . 27
7.2.17 Appliances incorporating a gas container . 27
7.3 Verification of the performance characteristics . 27
7.3.1 Soundness . 27
7.3.2 Verification of the nominal heat input . 28
7.3.3 Flame supervision device . 28
7.3.4 Safety of operation . 28
Table 5 —Conditions for the ignition test . 28
Table 6 —Conditions for the flame stability tests . 29
7.3.5 Temperatures . 30
7.3.6 Overheating of the gas container . 31
7.3.7 Combustion . 31
Table 7 — Percentage of CO in the products of neutral combustion . 32
7.3.8 Sooting . 32
7.3.9 Rational use of energy. 33
prEN 484:2022 (E)
Table 8 —Pan diameter and mass of water in relation to the burner heat input . 33
7.3.10 Durability of the marking . 35
8 Marking . 35
8.1 Appliance marking . 35
8.2 Packaging marking . 36
8.3 Instructions for assembly, use and maintenance . 36
Figure 2 — Characteristics of the test pans . 38
Figure 3 — Sampling device when a 220 mm pan is used . 39
Figure 4 — Sampling device when a 300 mm pan is used . 40
Figure 5 — Sampling device for checking combustion — simultaneous operation of the
burners . 41
Annex A (normative) National situations . 42
A.1 General. 42
A.2 Categories marketed in the various countries and corresponding pressures . 42
Table A.1 — Appliance categories marketed in various countries and the corresponding
pressures . 42
A.3 Types of connection used in various countries . 43
Table A.2 — Types of connection used in various countries . 44
A.4 Connection of appliances . 45
Figure A.1 — Diagrams showing the various types of connections . 48
Annex B (normative) Method of calculation of the nominal heat input . 49
B.1 Nominal heat input . 49
B.2 Corrected mass rate . 49
B.3 Use of a wet meter . 50
B.4 Correction of the measured volume . 50
Annex C (normative) Composition of test gases . 51
C.1 General. 51
C.2 Wobbe index . 51
C.3 Purity . 51
Annex D (normative) Surface temperature probe . 52
D.1 Design . 52
Figure D.1 — Surface temperature probe . 52
D.2 Validation test . 52
D.2.1 Principle . 52
D.2.2 Procedure . 52
D.2.3 Validation . 52
Figure D.2 — Test apparatus for the validation of the surface temperature probe . 53
prEN 484:2022 (E)
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Regulation (EU) 2016/426/EC . 54
Table ZA.1 — Correspondence between this European Standard and Annex 1 of
Regulation (EU) 2016/426 . 54
Bibliography . 57

prEN 484:2022 (E)
European foreword
This document (EN 484:2022) has been prepared by Technical Committee CEN/TC 181 “Appliances and
leisure vehicle installations using liquefied petroleum gas and appliances using natural gas for outdoor
use”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document supersedes EN 484:2019+AC:2019.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Regulation (EU) 2016/426
of the European Parliament and of the Council of 9 March 2016 on appliances burning gaseous fuels and
repealing Directive 2009/142/EC.
For relationship with EU Regulation (EU) 2016/426, see informative Annex ZA, which is an integral part
of this document.
The changes from the 2019 version is the addition of a ZA Annex in relation with EU Regulation (EU)
2016/426 and adaptation of corresponding clauses.
prEN 484:2022 (E)
1 Scope
This document specifies constructional and performance characteristics, safety specifications and
rational use of energy, relevant test methods and marking of independent stoves, side burners, covered
burners, open burners, griddles, radiant grills, burning liquefied petroleum gas, referred to in the body of
the text as “appliances”.
This document covers appliances, used outdoors and operating with the gases of the third family (see
EN 437:2021 for further information).
Appliances used in leisure vehicles and boats are outside the field of application of this standard.
Independent stove burners, whose nominal heat input is below 1,16 kW, griddles and radiant grills, are
not subject to any special requirement concerning the rational use of energy due to their low rate and
their use for short periods of time.
This document does not state all requirements for appliances of other nature incorporating a stove (for
example barbecues are not covered by this standard but a side burner of a barbecue is covered by this
standard).
This document does not cover regulators that are used with those appliances.
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 161:2011+A3:2013, Automatic shut-off valves for gas burners and gas appliances
EN 298:2012, Automatic burner control systems for burners and appliances burning gaseous or liquid fuels
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 60335-2-102:2016, Household and similar electrical appliances - Safety - Part 2-102: Particular
requirements for gas, oil and solid-fuel burning appliances having electrical connections
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)
prEN 484:2022 (E)
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
independent stove
cooking appliance incorporating one or several covered or open burners and, if applicable, one or several
contact or radiant grills
3.2
side burner
part of a cooking appliance incorporating one or several covered or open burners
Note 1 to entry: It is designed in such a way that it can support the pans containing the food.
3.3
griddle
part of an appliance consisting of a plate placed above a burner, allowing for the cooking of food by direct
contact with the surface of this plate which is brought to a high temperature
Note 1 to entry: It may be:
— permanent, that is designed to be used only in the above conditions;
— with two functions: that is designed to be capable of being also used as covered or open burner after removal
or change of the detachable plate.
3.4
radiant grill
appliance or part of an appliance allowing for cooking by radiation from a surface brought to a high
temperature
3.5
cooking device
component part of the appliance designed to hold or receive the food to be cooked
3.6
appliance incorporating a gas container
appliance whose body or support includes a compartment for a liquefied petroleum gas container, or a
fixing or support device for this container
3.7
detachable
can be dismantled without using a tool
3.8
removable
can only be removed with a tool
prEN 484:2022 (E)
3.9
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.
3.10
burner
component that allow 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.
3.11
ignition burner (pilot)
small burner whose flame is designed to light another burner
3.12
covered burner
burner where the pans being heated are screened from direct flame contact by the interposition of a
surface on which they rest
Note 1 to entry: A covered burner may be:
— permanent, that is designed to be used only with the plate in position;
— with two functions: that is designed to be capable of being used as uncovered burner after removal of a
detachable plate.
3.13
open burner
burner where the pans being heated are in direct contact with the flames
3.14
pan support
support placed above an open burner, and designed to support the pan being heated
3.15
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.
3.16
tap
device designed to isolate a burner from the gas supply pipework and to adjust its rate during use
prEN 484:2022 (E)
Note 1 to entry: There are two types of taps:
— Taps with marked positions: taps for which specific positions are preset (lighting, reduced rate, closed
position)
— Taps with variable positions: taps with a continuous setting without specific position
3.17
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.).
3.18
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
3.19
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
3.20
extinction delay time
time between the extinction of the flame supervised and the closure of the gas supply to the burner and
to the pilot
3.21
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
3.22
gripping area
area of the appliance designed to be manipulated during normal use
3.23
means of sealing
static or dynamic device designed to ensure soundness
Note 1 to entry: for example: flat-faced joints, O-ring joints, conical joints, diaphragms, grease, pastes, putties.
3.24
primary air adjuster
device allowing the aeration rate of a burner to be set at a predetermined value according to the supply
conditions
Note 1 to entry: The action consisting in operating this device is termed “primary air adjustment”.
prEN 484:2022 (E)
3.25
gas rate adjuster
device allowing the gas rate to a burner to be set at a predetermined value according to the supply
conditions
Note 1 to entry: The adjustment can be continuous (adjustment screw) or discontinuous (changing the calibrated
orifices).
Note 2 to entry: The operation of changing the setting of this device is termed the “adjustment of the gas rate”.
3.26
useful part of a cooking device
part of the device in contact with the food during cooking
3.27
locking
means of locking an adjuster, such that any attempt to change the adjustment causes the breaking of the
sealing device or sealing material and makes the interference with the adjuster apparent
Note 1 to entry: The adjuster is said to be sealed in the adjusted position. An adjuster sealed at the factory is
considered as non-existent.
3.28
soft solder
solder for which the lowest temperature of the melting range, after application, is less than 450 °C
3.29
pressure couple
set of two separate supply gas pressures applied because of the large difference between the Wobbe
indexes within a gas family or a gas group:
— the highest pressure applies only with gases of low Wobbe index;
— the lowest pressure applies only with gases of high Wobbe index.
[SOURCE: EN 437:2021]
3.30
heat input
quantity of energy used in unit time corresponding to the volumetric or mass flow rates, 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]
3.31
nominal heat input
Q
n
value of the heat input of a burner declared in the instructions
prEN 484:2022 (E)
3.32
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]
3.33
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), cubic
3 3
decimetres per hour (dm /h) or cubic decimetres per second (dm /s).
[SOURCE: EN 437:2021]
3.34
sooting
phenomenon appearing during incomplete combustion and characterized by a deposit of carbon on
surfaces in contact with the flame or the products of combustion
3.35
stability of flames
condition of flames when the phenomenon of flame lift or light back do not occur
3.36
light back
phenomenon characterized by the return of the flame inside the body of the burner
3.37
flame lift
phenomenon characterized by the partial or total movement of the base of the flame away from the
burner port
3.38
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]
prEN 484:2022 (E)
3.39
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 or net according to whether the calorific value used is the gross
or net calorific value.
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.
Note 3 to entry: Adapted from EN 437:2021.
3.40
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. The calorific
values are expressed in units of energy referred:
— either to the unit volume of dry gas measured under normal reference conditions: 15 °C, 1 013,25 mbar; it is
expressed in megajoules per cubic metre (MJ/m );
— or to the unit mass of dry gas. It is then expressed in megajoules per kilogramme (MJ/kg).
Note 4 to entry: Adapted from EN 437:2021.
3.41
supply pressure
difference between the static pressure measured at the gas inlet connection of the appliance and the
atmospheric pressure
Note 1 to entry: It is expressed in millibars (mbar).
3.42
reference conditions
15 °C, 1 013, 25 mbar, unless otherwise specified
prEN 484:2022 (E)
4 Classification
4.1 Classification of gases used
Gases used are classified in families and groups according to their Wobbe number.
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 (W ). It is subdivided into two groups, group P which covers the
s
3 3
range of Wobbe indexes between 72,9 MJ/m and 76,8 MJ/m and group B which covers the range of
3 3
Wobbe indexes between 81,8 MJ/m and 87,3 MJ/m .
4.2 Classification of appliances
Appliances are classified into categories according to the gases that they use. However, for each country,
only some of the categories mentioned below are applicable, on account of local gas supply conditions
(types of gas and supply pressures). For these categories, no requirement different from those defined in
this standard shall be applied.
The gas supply conditions and types of connection applicable to each country are given in Annex A.
Appliances within the field of application of this standard belong to the following categories and pressure
values:
a) Category I
3B/P(30)
Appliance capable of using third family gases (propane, butane or their mixtures), without adjustment at
nominal operating pressures of 30 mbar;
b) Category I
(B/P)(37)
3P
Appliances 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 I with the test pressure of 37 mbar;
3B/P
c) Category I
3B/P(50)
Appliance capable of using third family gases (propane, butane or their mixtures), without adjustment at
nominal operating pressure of 50 mbar;
d) Category I (28-30/37)
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 nominal operating pressures from 28 mbar to 30 mbar, for propane they are used at a
nominal operating pressure of 37 mbar;
e) Category I
3P(37)
Appliances capable of using third family gases in group P (propane), without adjustment at a nominal
operating pressure of 37 mbar;
f) Category I
3P(50)
Appliances capable of using third family gases in group P (propane), without adjustment at a nominal
operating pressure of 50 mbar.
prEN 484:2022 (E)
5 Constructional characteristics
5.1 Operating with 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 and sealed.
5.2 Materials
The quality and thickness of the materials used for the construction of an appliance shall be such that the
performances are not impaired during use.
At the end of the tests of this standard the appliance and its components shall not present any alteration
caused by mechanical, chemical and thermal effects. Metal parts shall be effectively protected against
corrosion.
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.
Materials containing asbestos shall not be used.
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.
,
5.3 Ease of cleaning and maintenance
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.
Spillage from vessels shall not impair the operation of the burners on which they are placed and these
shall be accessible for cleaning.
Grills shall be designed in such a way that cooking juices are collected in an area provided for this
purpose.
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.
prEN 484:2022 (E)
5.4 Manipulation of grills
5.4.1 Griddles
For movable plate, the plate handle, if any, shall allow manipulation of the plate without accidental
detachment. Flexing of the handle is allowed if its function is maintained.
5.4.2 Radiant grills
When the grill pan is fitted with a handle, it shall be designed in such a way that when it is held to carry
the grill pan or to pour out the liquid content, it shall not come loose under the conditions given in 7.2.4.2.
Flexing of the handle is allowed if its function is maintained.
5.5 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 grid of the appliance under the test conditions described in 7.2.5 shall not
cause any fracture or any permanent distortion greater than 1 mm at any point in the components of the
appliance.
5.6 Assembly
The appliances gas circuit assembly from the supplying pipe connection(s) to any injector shall be factory
assembled (i.e no intervention of the user needed). This requirement shall not apply if a quick self-closing
connection is used for an auxiliary burner.
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.
5.7 Stability
5.7.1 Stability of the appliance on a horizontal plane
The appliance being placed on a horizontal surface, the tests
...