SIST EN 509:2025
(Main)Decorative fuel-effect gas appliances
Decorative fuel-effect gas appliances
This document specifies the requirements and test methods for the construction, safety, and marking of decorative fuel effect gas appliances not exceeding a nominal heat input of 20 kW (based on the net calorific value), thereafter referred to as appliances.
This document is applicable to appliances that are designed to simulate a solid fuel fire and incorporate a natural draught burner with or without an ignition burner, that uses one or more combustible gases of the three gas families at the pressures stated in EN 437:2021. The appliances are for decorative purposes only and are not heating appliances.
This document is applicable to type BAS, as described in 4.2, decorative fuel effect gas appliances that are designed to be installed within a non-combustible builder's opening or a non-combustible fireplace recess.
NOTE 1 This document specifies special national conditions in Annex C for appliances of category I2E+, marketed in Belgium.
NOTE 2 This document specifies special A-deviations in Annex D for appliances in Switzerland which require additional requirements for subclauses 6.6 and 6.7.
This document includes additional requirements for Type BBS appliances which are specified in Annex F.
In addition, this document is applicable to decorative fuel-effect gas appliances that are designed to be installed under a non-combustible canopy which is independent or integral with a flue box, for which additional requirements are specified in Annex A.
The use of toxic gases is not covered.
This document is not applicable to:
- catalytic combustion appliances;
- appliances in which the supply of combustion air and/or the evacuation of products of combustion is achieved by mechanical means.
NOTE 3 Requirements concerning the rational use of energy have not been included in this document, because the appliances are for decorative purposes.
Dekorative Gasgeräte mit Brennstoffeffekt
Dieses Dokument legt die Anforderungen und die neuen Prüfbestimmungen für Konstruktion, Sicherheit, und Kennzeichnung von dekorativen Gasgeräten mit Brennstoffeffekt mit einer Nennwärmebelastung von höchstens 20 kW, (bezogen auf den Heizwert), im Folgenden als Gerät bezeichnet, fest.
Dieses Dokument ist anwendbar für dekorative Geräte mit Brennstoffeffekt, die mit Gas betrieben werden und einen atmosphärischen Brenner mit oder ohne Zündbrenner besitzen, die ein oder mehrere brennbare Gase der drei Gasfamilien bei den in EN 437:2021 angegebenen Drücken verwendet. Diese Geräte erfüllen nur eine dekorative Funktion und gelten nicht als Heizgeräte.
Dieses Dokument ist anwendbar für dekorative Gasgeräte mit Brennstoffeffekt der Art BAS – wie in 4.2 beschrieben, die zum Einbau in offene Kamine oder Einbaunischen aus nichtbrennbaren Werkstoffen bestimmt sind.
ANMERKUNG 1 Dieses Dokument legt in Anhang C besondere nationale Bedingungen für Geräte der Kategorie I2E+ fest, die in Belgien in Verkehr gebracht werden.
ANMERKUNG 2 Dieses Dokument spezifiziert spezielle A Abweichungen in Anhang D für Geräte in der Schweiz, die zusätzliche Anforderungen für die Unterabschnitte 6.6 und 6.7 erfordern.
Dieses Dokument enthält zusätzliche Anforderungen für Geräte vom Typ BBS, die in Anhang F aufgeführt sind.
Außerdem ist dieses Dokument anzuwenden für dekorative Gasgeräte mit Brennstoffeffekt, die unter einer nicht-brennbaren Abzugshaube zu installieren sind, welche entweder angebaut oder in einem Abgassystem integriert ist; hierfür sind zusätzliche Anforderungen im Anhang A enthalten.
Die Verwendung von giftigen Gasen ist nicht abgedeckt.
Dieses Dokument ist nicht anzuwenden für:
- Geräte mit katalytischer Verbrennung;
- Geräte mit mechanischer Verbrennungsluftzufuhr und/oder Abgasabführung.
ANMERKUNG 3 Anforderungen an die rationelle Energienutzung sind nicht enthalten, da diese Geräte nur eine dekorative Funktion erfüllen.
Appareils à effet décoratif de combustion utilisant les combustibles gazeux
Le présent document spécifie les exigences et les méthodes d'essais pour la construction, la sécurité et le marquage des appareils à effet décoratif de combustion utilisant les combustibles gazeux de débit calorifique nominal ne dépassant pas 20 kW (par rapport au pouvoir calorifique inférieur), appelés ci-après « appareils ».
Le présent document s'applique aux appareils conçus pour simuler un feu de combustible solide, équipés d'un brûleur atmosphérique avec ou sans brûleur d'allumage, qui utilise un ou plusieurs gaz combustibles des trois familles de gaz aux pressions indiquées dans l'EN 437:2021. Ces appareils ont un but uniquement décoratif et ne sont pas des appareils de chauffage.
Le présent document s'applique aux appareils de type BAS, comme indiqué en 4.2, les appareils à effet décoratif de combustion utilisant les combustibles gazeux qui sont conçus pour être installés dans la cavité non combustible d'un foyer ou dans le renfoncement non combustible prévu par l'architecte pour le foyer.
NOTE 1 Le présent document spécifie les conditions nationales particulières à l'Annexe C pour les appareils des catégories I2E+, commercialisés en Belgique.
NOTE 2 Le présent document spécifie des divergences A particulières à l'Annexe D pour les appareils en Suisse qui nécessitent des exigences supplémentaires pour les paragraphes 6.6 et 6.7.
Le présent document comprend les exigences complémentaires relatives aux appareils de type BBS spécifiés en Annexe F.
De plus, le présent document s'applique aux appareils à effet décoratif de combustion utilisant les combustibles gazeux prévus pour être installés sous une hotte non combustible qui est séparée ou fait partie intégrante de l'appareil avec le conduit d'évacuation des produits de combustion, pour lesquels des exigences complémentaires sont indiquées dans l'Annexe A.
L'utilisation de gaz toxiques n'est pas couverte.
Le présent document ne s'applique pas :
— aux appareils à combustion catalytique ;
— aux appareils dans lesquels l'amenée d'air comburant et/ou l'évacuation des produits de combustion est effectuée par un moyen mécanique.
NOTE 3 Les exigences relatives à l'utilisation rationnelle de l'énergie n'ont pas été traitées dans le présent document, car ces appareils n'ont qu'un but décoratif.
Plinski aparati z dekorativnim plamenom
Ta dokument določa zahteve in preskusne metode za izdelavo, varnost ter označevanje plinskih aparatov z dekorativnim plamenom z nazivno grelno močjo, ki ne presega 20 kW (glede na neto kurilno vrednost), v nadaljnjem besedilu »aparati«.
Ta dokument se uporablja za aparate, ki posnemajo gorenje trdnih goriv in vključujejo gorilnik z naravnim vlekom, z gorilnikom z vžigom ali brez njega, ki uporablja enega ali več gorljivih plinov iz treh družin plinov pri tlakih, navedenih v standardu EN 437:2021. Aparati se uporabljajo le za dekorativne namene in ne za ogrevanje.
Ta dokument se uporablja za plinske aparate z dekorativnim plamenom tipa BAS (kot je opisano v točki 4.2), namenjene za vgradnjo v obstoječo zidno odprtino ali odprto kurišče iz negorljivih materialov.
OPOMBA 1: Ta dokument določa posebne nacionalne pogoje v dodatku C za aparate kategorije I2E+, ki se tržijo v Belgiji.
OPOMBA 2: Ta dokument določa posebna A-odstopanja v dodatku D za aparate v Švici, ki zahtevajo dodatne zahteve v zvezi s podtočkama 6.6 in 6.7.
Ta dokument vključuje dodatne zahteve za aparate tipa BBS, ki so določene v dodatku F.
Ta dokument se uporablja tudi za plinske aparate z dekorativnim plamenom, namenjene za namestitev pod nadstreškom iz negorljivih materialov, ki je neodvisen od dimovodnega ohišja ali je z njim povezan in za katerega so v dodatku A določene dodatne zahteve.
Uporaba strupenih plinov ni zajeta.
Ta dokument se ne uporablja za:
– aparate s katalitičnim izgorevanjem;
– aparate, v katerih se dovajanje zgorevalnega zraka in/ali odvajanje produktov zgorevanja doseže z mehanskimi sredstvi.
OPOMBA 3: Zahteve v zvezi s smotrno rabo energije niso vključene v tem dokumentu, ker se aparati uporabljajo le za dekorativne namene.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2025
Nadomešča:
SIST EN 509:2001
SIST EN 509:2001/A1:2004
SIST EN 509:2001/A2:2005
Plinski aparati z dekorativnim plamenom
Decorative fuel-effect gas appliances
Dekorative Gasgeräte mit Brennstoffeffekt
Appareils à effet décoratif de combustion utilisant les combustibles gazeux
Ta slovenski standard je istoveten z: EN 509:2024
ICS:
97.100.20 Plinski grelniki Gas heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 509
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2024
EUROPÄISCHE NORM
ICS 97.100.20 Supersedes EN 509:1999
English Version
Decorative fuel-effect gas appliances
Appareils à effet décoratif de combustion utilisant les Dekorative Gasgeräte mit Brennstoffeffekt
combustibles gazeux
This European Standard was approved by CEN on 15 April 2024.
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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 509:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
3.1 Decorative fuel effect gas appliances . 9
3.2 Appliance construction . 9
3.2.1 The gas circuit . 9
3.2.2 Burner . 10
3.2.3 Combustion products circuit. 11
3.2.4 Auxiliary equipment . 11
3.3 Appliance performance . 12
3.3.1 nominal heat input . 12
3.3.2 Gas combustion . 12
4 Classification . 15
4.1 Gases and categories . 15
4.1.1 Classification of gases . 15
4.1.2 Appliance categories . 15
4.2 Classification according to the method of evacuation of the products of combustion . 15
5 Constructional requirements . 16
5.1 General . 16
5.1.1 Conversion to different gases . 16
5.1.2 Materials and method of construction . 17
5.1.3 Accessibility for use and maintenance . 18
5.1.4 Connections . 18
5.1.5 Soundness of the gas circuit . 19
5.1.6 Spacing . 19
5.1.7 Electrical equipment . 19
5.1.8 Safety in the event of fluctuation, interruption and restoration of the auxiliary
energy . 19
5.2 Adjusting, control and safety devices . 20
5.2.1 General . 20
5.2.2 Gas rate adjusters . 20
5.2.3 Flame picture adjuster . 20
5.2.4 Manual controls . 20
5.2.5 Pressure regulators . 21
5.2.6 Multifunctional controls . 22
5.2.7 Flame supervision devices . 22
5.2.8 Shut-off valves . 22
5.2.9 Automatic burner control systems . 22
5.2.10 Atmosphere sensing device . 23
5.3 Ignition devices . 23
5.3.1 General . 23
5.3.2 Ignition burners . 23
5.4 Flame supervision systems. 23
5.4.1 General . 23
5.4.2 Appliances with automatic burner control systems . 24
5.5 Ignition burner or start-gas flame establishment . 24
5.5.1 Appliances with non-automatic burner systems . 24
5.5.2 Appliances with automatic burner systems . 24
5.6 Main flame establishment . 24
5.6.1 General . 24
5.6.2 Appliances with non-automatic burner systems . 24
5.6.3 Appliances with automatic burner control systems . 24
5.6.4 Direct establishment of the main flame . 24
5.7 Burners . 25
5.7.1 General . 25
5.7.2 Pan burners . 25
5.8 Gas pressure test points . 25
6 Operational requirements . 25
6.1 Soundness of the gas circuit and correct evacuation of combustion products . 25
6.1.1 Soundness of the gas circuit . 25
6.1.2 Correct evacuation of combustion products . 25
6.1.3 Escape of unburnt gas from the burner . 25
6.2 Heat inputs . 26
6.2.1 Nominal heat input. 26
6.2.2 Start gas heat input . 26
6.2.3 Reduced rate. 26
6.3 Temperature of various parts of the appliance and its surrounding area . 26
6.3.1 Temperature of external parts of the appliance . 26
6.3.2 Temperature of components . 26
6.3.3 Floor temperatures . 27
6.4 Ignition, cross-lighting and flame stability . 27
6.4.1 Ignition and cross lighting . 27
6.4.2 Flame stability . 27
6.4.3 Effect of room draughts . 27
6.4.4 Fluctuation of auxiliary energy . 27
6.5 Pressure regulators . 27
6.6 Combustion . 28
6.6.1 CO concentration for all appliances . 28
6.6.2 Supplementary tests under special conditions. 28
6.6.3 Measurement of oxides of nitrogen, NO (all appliances) . 28
x
6.7 Sooting . 28
6.7.1 Cold condition . 28
6.7.2 Hot condition . 28
6.7.3 Long cycle . 28
6.8 Atmosphere sensing device . 29
6.9 Flame supervision device . 29
6.9.1 Thermoelectric device . 29
6.9.2 Automatic burner control system . 29
7 Test methods . 29
7.1 General . 29
7.1.1 Characteristics of test gases: reference and limit gases . 29
7.1.2 Conditions for preparation of the test gases . 29
7.1.3 Practical application of test gases . 29
7.1.4 Test pressures . 30
7.1.5 General test conditions . 32
7.2 Soundness of the gas circuit and correct evacuation of combustion products . 38
7.2.1 Soundness of the gas circuit . 38
7.2.2 Correct evacuation of combustion products . 39
7.2.3 Escape of unburnt gas from the burner . 39
7.3 Heat inputs . 39
7.3.1 Nominal heat input . 39
7.3.2 Calibrated injector rate of appliances without gas adjusters or where these adjusters
are put out of action . 41
7.3.3 Performance of gas rate adjusters for ungoverned appliances . 41
7.3.4 Start-gas heat input . 41
7.3.5 Reduced rate . 41
7.4 Temperature of various parts of the appliance and its surroundings . 42
7.4.1 General . 42
7.4.2 Temperature of external surfaces . 42
7.4.3 Temperature of components . 42
7.4.4 Temperature of floor . 42
7.5 Ignition, cross-lighting and flame stability . 44
7.5.1 Ignition and cross-lighting . 44
7.5.2 Flame stability . 45
7.5.3 Effect of room draughts . 46
7.6 Pressure regulators . 46
7.6.1 Operational pressure regulator . 46
7.6.2 Pressure regulator out of service . 46
7.7 Combustion . 47
7.7.1 General . 47
7.7.2 Tests under limit conditions . 48
7.7.3 Supplementary tests under special conditions . 49
7.7.4 Measurement of oxides of nitrogen . 49
7.8 Sooting. 49
7.8.1 Apparatus for the determination of the smoke number . 49
7.8.2 Determination of the smoke number . 50
7.8.3 Test conditions . 50
7.9 Atmosphere sensing device . 51
7.9.1 General . 51
7.9.2 Test method . 53
7.10 Flame supervision device . 53
7.10.1 Thermoelectric device. 53
7.10.2 Automatic burner control systems . 53
8 Marking and instructions . 54
8.1 Marking . 54
8.1.1 Marking of the appliance . 54
8.1.2 Marking of the packaging . 55
8.1.3 Utilization of symbols on the appliance and packaging . 55
8.2 Instructions . 57
8.2.1 Instructions for installation and adjustment . 57
8.2.2 Instructions for use and servicing . 58
8.2.3 Conversion instructions. 60
Annex A (normative) Additional and amended requirements for decorative fuel effect gas
appliances not exceeding a net heat input of 20 kW designed to be installed under a
non-combustible canopy . 61
A.1 Scope . 61
A.2 Normative references . 61
A.3 Terms and definitions . 62
A.4 Classification of appliances . 62
A.5 Constructional requirements . 62
A.6 Operational requirements . 62
A.7 Test methods . 63
Annex B (informative) Means of identification of the types of gas in force in the various
countries . 66
Annex C (informative) Special national conditions . 68
C.1 General . 68
C.2 Belgium. 68
Annex D (informative) A-deviations . 69
Annex E (normative) Calculation of conversions of NO . 70
x
Annex F (normative) Additional requirements for decorative fuel effect gas appliances not
exceeding a net heat input of 20 kW fitted with a combustion products discharge
safety device without a canopy . 71
F.1 Scope . 71
F.2 Normative references . 71
F.3 Definitions . 71
F.4 Classification of appliances . 71
F.5 Constructional requirements . 71
F.6 Operational requirements . 72
F.7 Test methods . 72
F.8 Marking and instructions . 74
Bibliography . 75
European foreword
This document (EN 509:2024) has been prepared by Technical Committee CEN/TC 62 “Independent
gas-fired space heaters”, the secretariat of which is held by BSI.
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 April 2025 and conflicting national standards shall be
withdrawn at the latest by April 2025.
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 509:1999.
The main changes compared to EN 509:1999 are the following:
— Clause 1 - the Scope has been extended to cover Type B appliances which are covered in a new
BS
Annex F;
— 3.2 - all terms and definitions related to gas in EN 509:1999, 3.2 have been deleted and replaced by
reference to EN 437:2021;
— 3.4 and 3.5 have been deleted and the definitions, which were considered necessary, retained and
included in 3.2 and 3.3 as appropriate;
— 3.6 has been deleted;
— 4.1 – original text has been replaced by reference to EN 437:2021;
— 4.2 – classification has been extended to type C and type C appliances;
31 91
— 5.1.1.4 has been deleted;
— 7.1.1 and 7.1.2 – original text has been replaced by reference to EN 437:2021;
— Annexes A, B, D and G have been deleted;
— Annex F has been added to cover Type B appliances.
BS
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 organizations 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, Türkiye and the
United Kingdom.
1 Scope
This document specifies the requirements and test methods for the construction, safety, and marking of
decorative fuel effect gas appliances not exceeding a nominal heat input of 20 kW (based on the net
calorific value), thereafter referred to as appliances.
This document is applicable to appliances that are designed to simulate a solid fuel fire and incorporate
a natural draught burner with or without an ignition burner, that uses one or more combustible gases of
the three gas families at the pressures stated in EN 437:2021. The appliances are for decorative
purposes only and are not heating appliances.
This document is applicable to type B , as described in 4.2, decorative fuel effect gas appliances that
AS
are designed to be installed within a non-combustible builder's opening or a non-combustible fireplace
recess.
NOTE 1 This document specifies special national conditions in Annex C for appliances of category I ,
2E+
marketed in Belgium.
NOTE 2 This document specifies special A-deviations in Annex D for appliances in Switzerland which require
additional requirements for subclauses 6.6 and 6.7.
This document includes additional requirements for Type B appliances which are specified in
BS
Annex F.
In addition, this document is applicable to decorative fuel-effect gas appliances that are designed to be
installed under a non-combustible canopy which is independent or integral with a flue box, for which
additional requirements are specified in Annex A.
The use of toxic gases is not covered.
This document is not applicable to:
— catalytic combustion appliances;
— appliances in which the supply of combustion air and/or the evacuation of products of combustion
is achieved by mechanical means.
NOTE 3 Requirements concerning the rational use of energy have not been included in this document, because
the appliances are for decorative purposes.
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 88-1:2022+A1:2023, Safety and control devices for gas burners and gas burning appliances — Part 1:
Pressure regulators for inlet pressures up to and including 50 kPa
EN 125:2022, Flame supervision devices for gas burning appliances — Thermoelectric flame supervision
devices
EN 126:2012, Multifunctional controls for gas burning appliances
EN 161:2022, Automatic shut-off valves for gas burners and gas appliances
EN 298:2022, Automatic burner control systems for burners and appliances burning gaseous or liquid
fuels
EN 437:2021, Test gases — Test pressures — Appliance categories
st nd rd
EN 751-1:1996, Sealing materials for metallic threaded joints in contact with 1 , 2 and 3 family gases
and hot water — Part1: Anaerobic jointing compounds
st nd rd
EN 751-2:1996, Sealing materials for metallic threaded joints in contact with 1 , 2 and 3 family gases
and hot water — Part 2: Non-hardening jointing compounds
EN 1106:2022+A1:2023, 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 10305-1:2016, Steel tubes for precision applications — Technical delivery conditions — Part 1:
Seamless cold drawn tubes
EN 60335-1:2012, , Household and similar electrical appliances — Safety — Part 1: General
requirements (IEC 60335-1:2010)
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 (IEC 60335-2-
102:2004, IEC 60335-2-102:2004/A1:2008, IEC 60335-2-102:2004/A2:2012)
EN 60529:1991, , Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
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)
EN ISO 3166-1:2020, Codes for the representation of names of countries and their subdivisions — Part 1:
Country code (ISO 3166-1:2020)
ISO 7-1:1994, , Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions,
tolerances and designation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 437:2021 and the following
apply.
ISO and IEC maintain terminology 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/
As impacted by EN 60335-1:2012/A11:2014, EN 60335-1:2012/A13:2017, EN 60335-1:2012/A1:2019,
EN 60335-1:2012/A14:2019, EN 60335-1:2012/A2:2019 and EN 60335-1:2012/A15:2021.
As impacted by EN 60529:1991/A1:2000 and EN 60529:1991/A2:2013/AC:2019-02.
As impacted by ISO 7-1:1994/Cor 1:2007.
3.1 Decorative fuel effect gas appliances
3.1.1
decorative fuel effect gas fire
appliance designed to simulate a solid fuel appliance for decorative purposes and intended to be
installed so that the products of combustion pass unrestricted from the firebed to the chimney or flue
Note 1 to entry: A decorative fuel effect gas fire is illustrated in Figure 1.
3.1.2
working surface
area of the appliance that generates and emits heat
Note 1 to entry: Examples of working surfaces include fire bricks, refractories, imitation fuel, fire fronts, fire
baskets, burners, burner trays and bracketry.
3.1.3
appliance guard
guard supplied integral with an appliance and intended to prevent direct contact with, or close
approach to a heat source(s)
Note 1 to entry: An appliance guard is principally intended to reduce risk of accidental ignition of flammable
materials; however, if personal contact occurs, it does not necessarily prevent a danger to the health and safety of
persons exposed.
3.2 Appliance construction
3.2.1 The gas circuit
3.2.1.1
inlet connection
part of the appliance intended to be connected to the gas supply
3.2.1.2
mechanical joint
connection device assuring soundness in an assembly of several parts, generally of metal
Note 1 to entry: For example, the following:
— cone seat joints;
— flat joints;
— metal to metal joints.
3.2.1.3
gas circuit
part of the appliance that conveys or contains the gas between the appliance gas inlet connection and
the burner(s)
3.2.1.4
gas restrictor
non-adjustable device which is placed in the gas circuit so as to create a pressure drop and thus reduce
the gas pressure at the burner to a predetermined value for a given supply pressure and rate
3.2.1.5
gas rate adjuster
component intended to set the gas rate to each burner at a predetermined value according to the supply
conditions
Note 1 to entry: The adjustment may be progressive (screw adjuster) or discontinuous (changing restrictors).
The adjuster of an adjustable regulator is regarded as a gas rate adjuster.
Note 2 to entry: The action of setting this device is called “setting the gas rate”.
3.2.1.6
gas rate control
component allowing the user to open or close the gas supply to one or more burners
Note 1 to entry: It may also be used to adjust the gas rate of certain burners to a predetermined value, called the
'reduced rate'. This device can be a 'tap'.
3.2.1.7
injector
component that admits the gas into a burner, where the section of the outlet orifice is fixed
3.2.1.8
start-gas
initial quantity of gas ignited to give a flame which is used to ignite the main burner
Note 1 to entry: It can be discharged through a separate ignition burner or part of the main burner.
3.2.2 Burner
3.2.2.1
main burner
burner that provides the primary thermal function of the appliance
3.2.2.2
pan burner
main burner which utilizes a particulate medium (e.g. sand) for the distribution of gas over a specified
area
3.2.2.3
pilot burner
burner intended to light the main burner and that supplements the main burner in providing a thermal
function of the appliance
3.2.2.3.1
permanent pilot
pilot burner that operates continuously throughout the whole period that the appliance is in use,
independent of the main burner, and has to be extinguished by manual intervention
3.2.2.3.2
non-permanent pilot
pilot burner that is extinguished automatically when there is no heat demand
3.2.2.4
fixed primary aeration restrictor
non-adjustable device which limits the supply of primary air to a burner
3.2.2.5
flame picture adjuster
device operated by the user to vary the flame picture
Note 1 to entry: This is achieved by varying the aeration between maximum and minimum values which are
specified by the design of the appliance.
3.2.3 Combustion products circuit
3.2.3.1
builder's opening
enclosure constructed to accommodate fireplace components
Note 1 to entry: See Figure 1.
3.2.3.2
fireplace opening
aperture formed in the face of the builder’s opening, the fireplace recess or fire surround if fitted
Note 1 to entry: See Figure 1.
3.2.3.3
fireplace recess
recess formed by the inclusion of fireplace components in the builder’s opening
Note 1 to entry: See Figure 1.
3.2.3.4
hearth
floor area in front of the plane of the builder's opening or fireplace opening
3.2.3.5
flue box
non-combustible enclosure that provides a substitute for the builder's opening or fireplace recess
3.2.3.6
canopy
enclosure situated at the base of a flue system and which is permanently fixed above the appliance to
facilitate the passage of the products of combustion into the flue
3.2.4 Auxiliary equipment
3.2.4.1
pressure regulator
device that maintains, within a fixed range, a constant downstream pressure, independent of the
upstream pressure and/or the gas rate
3.2.4.2
ignition device
device that ignites one or more burners
3.2.4.3
flame supervision device
device that senses the absence or presence of a flame
3.2.4.4
atmosphere sensing device
device that reacts to the lack of oxygen in the surrounding atmosphere
3.2.4.5
control knob
component designed to be moved by hand in order to operate an appliance control (tap, thermostat,
etc.)
3.2.4.6
programming unit
unit which reacts to signals from control and safety devices, gives control commands, controls the start-
up sequence, supervises the burner operation and causes controlled shut-down, and if necessary safety
shut-down and lock-out
Note 1 to entry: The programming unit follows a predetermined sequence of actions and always operates in
conjunction with a flame detector device.
3.2.4.7
flame detector device
device by which the presence of a flame is detected and signalled
Note 1 to entry: It can consist of a flame sensor, an amplifier and a relay for signal transmission. These parts,
with the possible exception of the actual flame sensor, may be assembled in a single housing for use in conjunction
with a programming unit.
3.2.4.8
automatic burner control system
burner system in which, when starting from the completely shut-down condition, the gas is ignited and
the flame is detected and proved and the main gas valve(s) is actuated without manual intervention
3.2.4.9
non-automatic burner system
burner control system with an ignition device which is operated under manual supervision
3.3 Appliance performance
3.3.1
nominal heat input
Q
n
value of the heat input declared in the technical specifications
Note 1 to entry: Unit: kilowatt (kW).
3.3.2
gas combustion
3.3.2.1
flame stability
state of the flames resting in a stable manner on the burner ports or the flame contact area provided by
the design with no danger of flame lift or light-back
3.3.2.2
flame lift
phenomenon characterized by the total or partial lifting of the base of the flame from the burner port or
the flame contact area provided by the design
3.3.2.3
light-back
phenomenon characterized by the entry of a flame into the body of a burner
3.3.2.4
light-back at the injector
phenomenon characterized by ignition of the gas at the injector, either as a result of the flame entering
the burner or by the propagation of a flame around the outside of the b
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