SIST EN 449:2004
(Main)Specification for dedicated liquefied petroleum gas appliances - Domestic flueless space heaters (including diffusive catalytic combustion heaters)
Specification for dedicated liquefied petroleum gas appliances - Domestic flueless space heaters (including diffusive catalytic combustion heaters)
This standard specifies the requirements, the test methods and the marketing of domestic flueless space heaters, including diffusive catalytic combustion heaters, having a nominal heat input (Hs), not exceeding 4,2 kW burning 3rd family gases at nominal operating pressures not exceeding 50 mbar, referred to in the text as 'appliances'.
Festlegungen für Flüssiggasgeräte - Abzuglose Haushaltsraumheizgeräte (einschließlich Heizgeräte mit diffusiver katalytischer Verbrennung)
Diese Europäische Norm enthält die Anforderungen, die Prüfmethoden und die Kennzeichnung für häusliche, abzugslose Raumheizer, einschließlich Raumheizer mit diffusiver katalytischer Verbrennung, deren Nennwärmebe-lastung (Hs) 4,2 kW nicht überschreitet, die mit Gasen der dritten Gasfamilie betrieben werden und deren Nenndruck 50 mbar nicht überschreitet. Diese Raumheizer werden im Text als ?Geräte" bezeichnet.
Diese Norm gilt für folgende Arten von Geräten:
a) fest angeschlossene Geräte, die mit handelsüblichem Butan und/oder handelsüblichem Propan betrieben werden;
b) tragbare oder transportable Geräte, die mit handelsüblichem Butan und/oder handels-üblichem Propan betrieben werden, einschließlich der Geräte, die ein Flaschenfach für eine transportable und wiederauffüllbare Flüssiggasflasche haben;
Anforderungen an die rationelle Verwendung von Energie sind in dieser Europäischen Norm nicht enthalten, weil
c) alle durch die Verbrennung erzeugte Wärme in den zu beheizenden Raum gelangt;
d) die Anforderungen an die Verbrennungsgüte eine Sicherheitsanforderung ist und eine vollständige Verbrennung sichergestellt wird.
Diese Norm gilt nicht für Geräte, die mit elektrisch betriebenen Regel- und Sicherheitseinrichtungen ausgerüstet sind.
Anhang A zeigt Einzelheiten über die Gerätekategorien, die in den verschiedenen Ländern angewendet werden.
Die Anforderungen dieser Norm für Geräte setzen voraus, dass die Versorgung mit Flaschengas über ein Gasdruckregelgerät erfolgt, dessen höchster Nenn-Ausgangsdruck 50 mbar beträgt.
Diese Norm enthält keine Anforderungen an Flüssiggasflaschen und an die dazu gehörenden Flaschendruck-regelgeräte und an bewegliche Schläuche, die den jeweiligen nationalen Anforderungen entsprechen müssen.
Spécifications pour les appareils fonctionnant exclusivement aux gaz de pétrole liquéfiés - Appareils de chauffage domestiques non raccordés (y compris les appareils de chauffage a combustion catalytique diffusive)
La présente Norme européenne spécifie les prescriptions, les méthodes d'essais et le marquage des appareils domestiques de chauffage non raccordés a un conduit d'évacuation des produits de la combustion, y compris les appareils a combustion catalytique diffusive, dont le débit calorifique nominal est inférieur a 4,2 kW (HS), alimentés par des gaz de la 3eme famille sous la pression nominale de service ne dépassant pas 50 mbar, désignés dans le texte par "appareils".
La présente Norme européenne est applicable aux types d'appareils suivants :
a) appareils fixes fonctionnant au butane commercial et/ou au propane commercial ;
b) appareils portatifs ou mobiles fonctionnant soit au butane commercial, soit au butane commercial et au propane commercial y compris ceux qui ont un compartiment d'installation pour une bouteille portative rechargeable de gaz de pétrole liquéfié.
Aucune prescription particuliere concernant le rendement thermique n'est définie pour ces types d'appareils car :
c) toute la chaleur produite par le processus de la combustion se dégage dans l'espace a chauffer ;
d) les exigences concernant la combustion, qui relevent de la sécurité, garantissent la combustion du combustible gazeux .
La présente Norme européenne ne concerne pas les appareils incorporant des dispositifs électriques de contrôle du gaz.
L'annexe A donne les détails concernant les catégories d'appareils commercialisées dans les divers pays.
Les exigences pour les appareils données dans cette norme européenne supposent que l'alimentation en gaz a partir de la bouteille soit contrôlée par un détendeur dont la pression nominale maximale de détente atteint 50 mbar.
La présente norme européenne ne concerne pas les bouteilles de gaz de pétrole liquéfié, ni leurs détendeurs associés, ni les tubes et tuyaux flexibles, qui doivent etre conformes aux réglementations nationales en vigueur.
La présente norme couvre uniquement les essais de type.
Specifikacije za plinske aparate na utekočinjeni naftni plin - Plinski grelniki za ogrevanje prostorov brez priključka na dimnik (vključno z grelniki z difuzijskim katalitskim zgorevanjem)
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Specification for dedicated liquefied petroleum gas appliances - Domestic flueless space heaters (including diffusive catalytic combustion heaters)Spécifications pour les appareils fonctionnant exclusivement aux gaz de pétrole liquéfiés - Appareils de chauffage domestiques non raccordés (y compris les appareils de chauffage a combustion catalytique diffusive)Festlegungen für Flüssiggasgeräte - Abzuglose Haushaltsraumheizgeräte (einschließlich Heizgeräte mit diffusiver katalytischer Verbrennung)Ta slovenski standard je istoveten z:EN 449:2002SIST EN 449:2004en,fr,de97.100.20Plinski grelnikiGas heatersICS:SIST EN 449:1997/AC:2002SIST EN 449:19971DGRPHãþDSLOVENSKI
STANDARDSIST EN 449:200401-januar-2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 449November 2002ICS 97.100.20Supersedes EN 449:1996English versionSpecification for dedicated liquefied petroleum gas appliances -Domestic flueless space heaters (including diffusive catalyticcombustion heaters)Spécifications pour les appareils fonctionnantexclusivement aux gaz de pétrole liquéfiés - Appareils dechauffage domestiques non raccordés (y compris lesappareils de chauffage à combustion catalytique diffusive)Festlegungen für Flüssiggasgeräte - AbzugloseHaushaltsraumheizgeräte (einschließlich Heizgeräte mitdiffusiver katalytischer Verbrennung)This European Standard was approved by CEN on 9 September 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 449:2002 E
EN 449:2002 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.54Classification.105Safety and constructional requirements.116Test methods.217Marking and instructions.37Annex A (normative)
Special national conditions.43Annex B (normative)
Vitiation room.49Annex C (informative)
Air supply and ventilation – Using recommendations.51Annex ZA (informative)
Clauses of this European Standard addressing essential requirements orother provisions of EU Directives.52
EN 449:2002 (E)3ForewordThis document (EN 449:2002) has been prepared by Technical Committee CEN/TC 181 "Dedicated liquefiedpetroleum gas appliances", the secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by May 2003, and conflicting national standards shall be withdrawn at the latest byMay 2003.This document supersedes EN 449:1996.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree 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.This standard cancels and replaces EN 449:1996. Relating to the 1996 version, this standard introduces technicalmodifications in particular on marking requirements, construction requirements, flow rate requirements, and severaltest methods of which life test for catalytic combustion appliances.Items relating to quality assurance systems, production testing and particularly certificates of conformity of auxiliaryequipment are not covered by this standard.Annexes A and B are normative elements of this standard. Annex C is informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.
EN 449:2002 (E)41 ScopeThis European Standard specifies the requirements, the test methods and the marking of domestic flueless spaceheaters, including diffusive catalytic combustion heaters, having a nominal heat input (Hs), not exceeding 4,2 kWburning 3rd family gases at nominal operating pressures not exceeding 50 mbar, referred to in the text as'appliances'.This European Standard is applicable to the following types of appliances:a) fixed heaters burning commercial butane and/or commercial propane;b) portable or mobile heaters burning either commercial butane, or, commercial butane and commercial propaneincluding those that incorporate a LPG container installation compartment for a transportable refillable liquefiedpetroleum LPG container.There are no specific thermal efficiency requirements appropriate to these types of appliance as:c) all the heat produced by the combustion process is released into the space to be heated;d) the requirements with regard to the combustion performance, which is a safety matter, ensure the effectiveburning of the fuel gas.It does not cover appliances incorporating electrically operated gas control systems.Annex A gives the details of the categories of appliances marketed in various countries.Requirements for appliances given in this standard assume that the supply of gas from the container will begoverned by a pressure regulator having a maximum nominal outlet pressure of 50 mbar.This European Standard does not cover LPG containers for liquefied petroleum gas neither their associatedregulator nor tubing and flexible hoses which shall comply with national requirements in force.This European Standard only covers type testing.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 125, Flame supervision devices for gas burning appliances - Thermo-electric flame supervision devices.EN 126, Multifunctional controls for gas burning appliances.EN 161, Automatic shut-off valves for gas burners and gas appliances.EN 257, Mechanical thermostats for gas burning appliances.EN 437:1993, Test gases - Test pressures - Appliance categories.EN 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment.EN 751-1, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hotwater - Part 1: Anaerobic jointing compounds.
EN 449:2002 (E)5EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hotwater - Part 2: Non-hardening jointing compounds.EN 1057, Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heatingapplications.EN 60335-1:1994, Safety of household and similar electrical appliances - Part 1: General requirements (IEC60335-1:1991, modified).EN ISO 3166-1, Codes for the representation of names of countries and their subdivisions - Part 1: Country codes(ISO 3166-1:1997).ISO 7-1, Pipe threads where pressure-tight joints are made on the threads - Part 1: Dimensions, tolerances anddesignation.ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerancesand designation.CR 1472:1997, General guidance for the marking of gas appliances.CR 1749, European scheme for the classification of gas appliances according to the method of evacuation of theproducts of combustion (Types).3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1appliance incorporating a LPG containerappliance which includes a LPG container installation compartment3.2auxiliary equipment¾ tap and cocks;¾ flame supervision devices;¾ thermostats;¾ multifunctional controls;¾ automatic shut-off valves.3.3burnercomponent that allows the gas to burn.Two types are distinguished:¾ non-aerated burner: in which the air for combustion is entrained entirely at the burner outlet or at the burnersurface for catalytic burners;¾ aerated burner in which part of the air for combustion, termed primary air, is entrained by the gas flow andmixed before the burner outlet. The remainder of the air drawn in at the port, termed secondary air, is drawn inafter the burner outlet or at the burner surface for catalytic burners
EN 449:2002 (E)63.4heat inputquantity of energy used divided by time corresponding to the volumetric or mass flow rates, the calorific value usedbeing either the net or gross calorific valueNOTEQUnit : kilowatt (kW)[EN 437:1993]3.5nominal heat inputvalue of the heat input declared by the manufacturerNOTEQn[EN 437:1993]3.6volume ratevolume of gas consumed by the appliance during continuous operation divided by the operating time.NOTEVUnits: cubic metre per hour (m3/h), litre per min (l/min), cubic decimetre per hour (dm3/h) or cubic decimetre persecond (dm3/s)[EN 437:1993]3.7mass ratemass of gas consumed by the appliance during continuous operation divided by the operating timeNOTEMUnits : kilogram per hour (kg/h), or gram per hour (g/h)[EN 437:1993]3.8flame liftphenomenon characterized by the partial or total movement of the base of the flame away from the burner port3.9relative densityratio of the masses of equal volumes of dry gas and dry air at the same conditions of temperature and pressure :15°°C (or 0°°C), 1 013, 25 mbarNOTEd[EN 437:1993]3.10ignition devicedevice to ignite one or more burners directly or indirectly, for instance through a flash tubeit may be either electric (resistance, spark, etc.) or thermal (pilot, etc.)
EN 449:2002 (E)73.11flame supervision devicedevice including a sensing element which causes the gas supply to a burner to be opened or closed according tothe presence or absence of the flame which activates the sensing element3.12Wobbe numberratio of the calorific value of a gas per unit volume and the square root of its relative density under the samereference conditions. The Wobbe index is said to be gross or net according to whether the calorific value used isthe gross or net calorific value.NOTEgross Wobbe index : Ws ; net Wobbe index : Wi.Units: either¾ megajoule per cubic metre (MJ/m3) of dry gas at the reference conditions, or¾ megajoule per kilogram (MJ/kg) of dry gas[EN 437:1993]3.13injectorcomponent part that admits the gas into an aerated burner. There are two types of injectors:¾ calibrated injector: where the section of the outlet orifice is fixed ;¾ adjustable injector: where the section of the outlet orifice is variable3.14sound mechanical jointconnection device assuring soundness in an assembly made up of several parts, generally of metalit can be:¾ a conical joint;¾ an O-ring joint;¾ a flat-faced joint.3.15tap handlemanually operated component used to open, partially open, or close a tap3.16primary air adjusterdevice allowing the primary aeration of a burner to be set at a predetermined value according to the supplyconditions. The operation of changing the setting of this device is termed the 'adjustment of primary air'3.17gas rate adjusterdevice allowing the gas rate to a burner to be set at a predetermined value according to the supply conditions. Itoften consists of a screw, termed a 'throttle screw' or an 'adjustment screw'. The operation of changing the settingof this device is termed the 'adjustment of the gas rate'
EN 449:2002 (E)83.18gross calorific value Hsquantity of heat produced by the complete combustion, at constant pressure, of unit volume or mass of theconsidered gas, the water produced by the combustion being condensed.It is expressed in megajoules referred either to per cubic meter of dry gas measured at 15°°C at a pressure of1 013,25 mbar or to per kg of dry gas3.19gas supply pressuredifference between the static pressure measured at the inlet connection of the appliance and the atmosphericpressure3.20light backphenomenon characterized by the return of the flame inside the body of the burner3.21tapdevice to adjust the heat input during use and/or isolate the gas supply to the various burners3.22soft soldersolder for which the lowest temperature of the melting range, after application, is less than 450 °C3.23stability of flamesconditions of the flames at the burner ports when the phenomena of flame lift or light back do not occur3.24thermostatdevice to maintain automatically a selected constant temperature. It may include a graduated scale for theselection of the temperature3.25closed fronted fireappliance in which the glowing area is substantially covered by means of a transparent or translucent screen3.26cold conditioncondition of the appliance required for some tests and obtained by allowing the unlit appliance to attain equilibriumat room temperature3.27hot conditioncondition of the appliance required for some tests and obtained by heating for one hour at the normal test pressure3.28fixed heaterheater designed to be secured to a wall or floor3.29mobile heaterself-contained heater incorporating its own gas container within the body of the appliance and designed to bemoved without lifting3.30portable applianceself-contained heater for connection to a gas supply by means of flexible tubing and designed to be easily carried
EN 449:2002 (E)93.31atmosphere sensing devicea device that is designed to shut off the gas supply when the carbon dioxide concentration of the surroundingatmosphere exceeds a given level. Such a device normally comprises a vitiation sensitive pilot in conjunction with asuitable flame supervision device3.32catalytic unitpanel and its content, including the catalytic pad, into which the gas is injected, through which it is distributed andoxidised, and from which the products are emitted3.33diffusive catalytic combustion space heaterspace heating appliance in which gas diffuses through a catalytic pad and is flamelessly oxidized by oxygen thathas diffused into the pad from the surrounding atmosphere at a temperature below that at which flame combustionwould occurNOTEDiffusive catalytic combustion space heaters do not include catalytic combustion heaters in which pre-mixing of gasand air is effected before the catalytic pad is reached, nor do they include appliances employing after-burners in which productsof incomplete combustion from burners are further oxidized over a catalyst.3.34by-pass ratenon-adjustable rate of flow through a thermostat when the valve is closed3.35slipratio of unburnt fuel gas to total hydrocarbons which have passed through the catalytic pad3.36minimum operational rateeithera) for any burner or section of a burner that is controlled by a thermostat, the bypass rate; orb) for any burner that is manually controlled but where it is only possible to obtain certain predetermined fixedsettings, the lowest rate obtainable in normal use3.37removablethat which may only be removed with a tool3.38direct destination countrycountry for which the appliance has been certified and which is specified by the manufacturer as the intendedcountry of destination[CR 1472:1997]3.39manufacturerperson responsible for designing and manufacturing a product covered by the directive, with a view to placing it onthe Community market on his own behalf[CR 1472:1997]
EN 449:2002 (E)104 Classification4.1 Classification of gasesGases likely to be used are classified in families according to the value of their Wobbe number. Table 1 details thefamily and groups relevant for this standard.Table 1 — Classification of gasesGas families and groups3rd Family GasesWobbe NumberMJ/m3 (Hs at 15 oC)Group B/Pbetween 72,9 and 87,3Group Pbetween 72,9 and 76,8Group Bbetween 81,8 and 87,34.2 Classification of appliances according to the supply gases and pressuresAppliances are classified into categories according to the gases and pressures that they are designed to use.However, for each country, only some of the categories defined hereafter are applicable, on account of local gasdistribution conditions (types of gas and supply pressures). For these categories, requirements different from thosedefined in this standard shall not be specified.Annex A describes the gas distribution conditions and types of connection applicable to each country.This specification only covers appliances of the following categories:a) appliances in Category I3+which may be used at a nominal operating pressure of 37 mbar when used onpropane and a nominal operating pressure of 28 mbar or 30 mbar when used on butane;b) appliances in Category I3B/P(30) which may be used with propane, butane or mixes of these gases at a nominaloperating pressure of 28 mbar or 30 mbar;c) appliances in Category I3B/P(50) which may be used with propane, butane or mixes of these gases at a nominaloperating pressure of 50 mbar;d) appliances in Category I3B which may be used with butane only at a nominal operating pressures of 28 mbaror 30 mbar;e) appliances in Category I3P(37) which may be used with propane only at a nominal operating pressure of37 mbar;f) appliances in Category I3P(50) which may be used with propane only at a nominal operating pressure of 50mbar.4.3 Classification of appliances according to the method of evacuation of products ofcombustionAccording to the classification given in CR 1749, the appliances falling into the scope of this standard are of typeA1AS, that is to say "appliances not intended for connection to a flue or to a device for evacuating the products ofcombustion to the outside of the room in which the appliance is installed, not fitted with a fan, but fitted with anatmosphere sensing device" (see 5.13.2).
EN 449:2002 (E)115 Safety and constructional requirements5.1 Test methodsThe test methods and means of assessment shall be as described in clause 6.5.2 Conversion to different gasesThe appliance shall be supplied for a single gas category and for a single operating pressure or pressure couple.Conversion to another category or pressure or pressure couple is not permitted.5.3 MaterialsThe quality and thickness of material used in the construction of an appliance shall be such that the safetycharacteristics are not altered in use.In particular, all parts of the appliance shall withstand the mechanical, chemical and thermal conditions to whichthey may be submitted during their use. In normal conditions of use, of cleaning or of adjustment, the materialsshall not be liable to any deformation which might impair their performance. Metal parts shall be suitably protectedagainst the effects of corrosion.When a European Standard is adopted for a means of sealing used on the appliance, that means of sealing shallcomply with the requirements of that European Standard.Rubber seals shall be made from materials which comply with EN 549.The appliance gas pipework and gas controls shall be of metal except as allowed in 5.6.Materials containing asbestos shall not be used.Glass components shall not have sharp edges or corners likely to cause injury during use or maintenance.Mountings for glass components shall be such as to avoid stresses on the glass during normal use.5.4 Cleaning and user maintenanceAny part of the appliance requiring cleaning by the user shall be easily accessible without having to move theappliance, and without the use of a tool. It shall be possible to replace such parts correctly and without difficulty.Appliances shall have no ragged or sharp edges other than those necessary for the function of the appliance oraccessory that could create an hazard for the user in normal use or during user maintenance.The assembly of the LPG container by the user shall be possible with simple, commonly available, tools. If aspecial tool is required it shall be provided with the appliance by the manufacturer.5.5 Strength of assemblyThe construction of the appliance shall be such that, during normal conditions of use, maintenance and, for mobileand portable appliances, movement, any displacement, distortion or deterioration of parts likely to impair its goodperformance will not occur.For mobile and portable heaters connected using a downward facing union connector (5.7.1 b2), at the end of thetest carried out according to 6.5 a), the soundness of the gas circuit shall be checked according to 5.6.
EN 449:2002 (E)125.6 Soundness of the gas circuit assemblyAll gas carrying parts, starting with the inlet connection, shall be delivered by the manufacturer assembled foroperation.Holes for screws, pins, etc. intended for the assembly of components shall not open into the gas ways.The soundness of assemblies connected to the gas circuit shall be assured, by means of mechanical seal joints.For parts that do not require to be dismantled during normal maintenance, for example taps and injectors, the useof appropriate thread sealing compounds is permitted, those compounds shall comply with EN 751-1 andEN 751-2.Soft solder shall not be used to ensure the soundness of the connections of the gas circuit. Removablecomponents or the threaded parts of the pipe work which may be dismantled during normal maintenance shallremain sound after five disconnection’s, if necessary after changing a gasket, where such exists.Under the test condition specified in 6.6.2, the leak detected during each of the tests numbers 1 and 2 shall notexceed 0,07 dm3/h (dry air, 20 °C, 1 013,25 mbar).5.7 Connections5.7.1 Gas inletThe gas inlet to the appliance shall be one of the following types:a) for fixed appliances:1) without a thread: for a length of at least 30 mm its extremity shall be cylindrical, smooth
and clean to allowconnection by means of a gas-tight compression fitting;2) with a thread: its extremity shall have a thread following ISO 228-1 or ISO 7-1, size 1/2, 3/8, 1/4 (majordiameter 21 mm, 17 mm or 13 mm);3) for connection to copper tube complying with EN 1057 (compression or capilliary fittings);b)for mobile and portable appliances:1) with a nozzle for the attachment of a flexible tube;2) a downward facing union connector for a hose assembly.The Special National Conditions with regard to connections are given in annex A.5.7.2 Pressure test pointFor fixed appliances, means shall be provided to allow the pressure to be measured easily.The pressure test point in the gas circuit, if exists, shall have a nozzle with an external diameter of (0509,-) mm andshall be at least 10 mm long. The internal diameter shall not exceed 1 mm.5.7.3 Connection with flexible houses having a threaded extremityThe housing assembly shall be designed such as to resist to the tests described in 6.5 a).
EN 449:2002 (E)135.8 Appliance stability, fixing and mobility devices5.8.1 Appliances with integral containersThe appliance shall be so designed that, with its container in place, it cannot be tipped over when subjected to theforce and the test conditions specified in 6.8.1.5.8.2 Appliances without integral containersWhen tested in accordance with 6.8.2 the appliance shall not fall forwards or sideways when placed on an inclinedplane at an angle of 15°. It shall not fall backwards when placed on an inclined plane at an angle of 10°.5.8.3 Fixed appliancesWhen the appliance is installed as described in the manufacturer's instructions, it shall be secure.In the test conditions described in 6.8.3, the appliance shall remain securely fixed to the wall and the mountingshall not be distorted.5.8.4 Mobility devicesAfter the test described in 6.8.4, there shall be no damage to the wheels or castors, and they shall rotate freely.5.9 Taps and controls5.9.1 GeneralThe appliance shall be fitted with such taps and controls as are essential for the normal operation of the applianceby the user.When a European Standard is adopted for any item of auxiliary equipment as defined in 3.2, that equipment shallcomply with the requirements of that European Standard.When a flame supervision device, multi-functional control, automatic shut-off valve, or thermostat falls within thescope of EN 125, EN 126, EN 161 or EN 257, the requirements of that standard shall be met.Mobile and portable appliances shall not incorporate a position on the tap capable of completely closing the gassupply.Catalytic appliances which employ a flame for ignition shall be so constructed that after the pre-heat period it is notpossible to select a pre-heat position without continuous manual operation.Taps shall be placed in such a way that their strength, operation, manipulation and accessibility undergo nodamage from actions to which they are subjected in normal use, and they shall be protected against ingress offoreign matter.Moreover, their manipulation shall remain easy during and after the test described in 6.23.2.All parts of a control shall be clean.Taps shall be mounted in such a way that no accidental movement relative to the gas supply connection ispossible.Any control placed in the gas circuit shall be arranged so that any maintenance by a service engineer is easy andso that its exchange by a service engineer is possible.
EN 449:2002 (E)145.9.2 Plug type tapsA plug type tap shall have a compensating device to take up automatically any wear between the plug and the tapbody.5.9.3 Needle type tapsA needle type tap shall not be capable of reducing the heat input to a burner below a pre-set minimum.It shall not be possible to unscrew the needle from its housing when opening the valve. When closing, the pressureof the needle on its seat constitutes the stop.The operating screw shall be a simple thread such that the maximum rate is obtained after turning not less than ahalf turn and not more than one turn from the valve's closed position.5.10 Control handles, knobs or pushbuttonsThe closed position (fixed appliances), open and any reduced rate positions (for fixed and mobile appliances) shallbe marked in a visible legible and durable fashion (e.g. a large flame to denote full on, a small flame to indicate alow rate and a full disc or circle, of at least 3 mm diameter, to denote any off position of fixed appliances).A tap capable of complete closing shall not be used on mobile appliances.If control handles operate by turning, the closing direction shall be clockwise.For fixed appliances, if the control handles operate by turning, and their axes are in a horizontal plane, the closuremark placed in a vertical plane shall be situated above the turning axis of the handle in its closed position. Theclosed position of the tap shall not give rise to any possibility of confusion with an open position.Any special position of the tap intended for ignition and/or any special button that has to be operated to causeignition shall be clearly marked (e.g. by a star).Where more than one tap is provided it shall be obvious which burner is controlled by each tap.Tap handles shall be so designed or arranged relative to one another that the movement of one handle does notcause inadvertent movement of an adjacent one.Tap handles shall be so designed that they can neither be fitted in the wrong position nor move by themselves. Theshape of a handle shall be such that its grip makes manipulation easy.5.11 InjectorsInjectors shall be removable.Injectors shall carry an indelible means of identification of their orifice, in preference, in hundredth of millimetre.Adjustable injectors shall not be used.5.12 Ignition deviceWhere an ignition device exists, it shall provide rapid and safe ignition.All the components of the ignition device shall be designed to
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