SIST EN 1949:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Festlegungen für die Installation von Flüssiggasanlagen in bewohnbaren Freizeitfahrzeugen und zu Wohnzwecken in anderen StraßenfahrzeugenSpécifications pour les installations de systemes GPL pour les besoins domestiques dans les véhicules habitables de loisirs et les autres véhicules routiersSpecification for the installation of LPG systems for habitation purposes in leisure accommodation vehicles and in other road vehicles43.100Osebni avtomobili. Bivalne prikolice in lahke prikolicePassenger cars. Caravans and light trailersICS:Ta slovenski standard je istoveten z:EN 1949:2002SIST EN 1949:2004en,fr,de01-januar-2004SIST EN 1949:2004SLOVENSKI
STANDARD



SIST EN 1949:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1949August 2002ICS 43.100; 97.200.30English versionSpecification for the installation of LPG systems for habitationpurposes in leisure accommodation vehicles and in other roadvehiclesSpécifications pour les installations de systèmes GPL pourles besoins domestiques dans les véhicules habitables deloisirs et les autres véhicules routiersFestlegungen für die Installation von Flüssiggasanlagen inbewohnbaren Freizeitfahrzeugen und zu Wohnzwecken inanderen StraßenfahrzeugenThis European Standard was approved by CEN on 6 July 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 1949:2002 ESIST EN 1949:2004



EN 1949:2002 (E)2ContentspageForeword.41Scope.52Normative references.53Terms and definitions.64General requirements.84.1Dynamic loads.84.2Soundness.94.2.1Requirements.94.2.2Test95Cylinder compartments.95.1General.95.2Cylinder compartments with internal access.115.3Cylinders secured outside the vehicle.115.4Ventilation for cylinder compartments without internal access.125.5Ventilation for cylinder compartments with internal access.125.6Appliances, components and fittings in cylinder compartments.125.7Requirements for the construction of cylinder compartments.126Pressure regulation systems and working pressures.136.1Pressure regulation systems.136.2Marking of the working pressure.136.3Devices to protect against over-pressure.136.4Connection of pressure regulators to rigid pipework - Low pressure supply.136.5Connection of a dual cylinder system.136.6Connection of an external
LPG supply by means of a plug-in connector.147Components.147.1Hoses.147.2Pipes.147.3Pipe fittings.147.4Jointing materials.167.5Shut-off valves.168Installation design.168.1General.168.2Protection against mechanical damage.168.3Avoidance of corrosion.168.4Pipe sizing.168.5Pipe fittings.168.6Positioning of LPG pipes near to other services.178.7Fixing.178.8Shut-off valves.178.9Earthing of LPG pipes.179Connection of appliances to the LPG supply installation.1710Appliances.1810.1Suitability of appliances.1810.2Installations.1810.3Space heaters.1810.3.1Space heating appliances in caravans, motor caravans and other road vehicles.1810.3.2Space heating appliances in caravan holiday homes.19SIST EN 1949:2004



EN 1949:2002 (E)310.4Water heaters.1910.4.1Water heaters in caravans, motor caravans and other road vehicles.1910.4.2Water heaters in caravan holiday homes.1910.5Cooking appliances.2010.6Refrigerators.2110.7Gas lights.2111Flueing.2111.1Flues.2111.2Flue terminals.2111.3Weather protection.2311.4Draught diverters.2311.5Accessibility of flues.2312User’s handbook.23Annexe A (informative)
National situations in the member states.25Annexe B (informative)
Countries where underfloor flueing is not permitted.26Bibliography.27SIST EN 1949:2004



EN 1949:2002 (E)4ForewordThis document EN 1949:2002 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 February 2003, and conflicting national standards shall be withdrawn at the latestby February 2003.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association.In this European Standard the annexes A and B are 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.SIST EN 1949:2004



EN 1949:2002 (E)51 ScopeThis European Standard specifies the requirements for the installation of liquefied petroleum gas systems forhabitation purposes in leisure accommodation vehicles and in other road vehicles. It details safety and healthrequirements on the selection of materials, components and appliances, on design considerations and soundnesstesting of installations and on the contents of the user's handbook.This standard does not cover installations supplied from other than 3rd family gases (LPG), water connections orelectrical power supplies to the appliance(s). Portable appliances, incorporating their own gas supply, are notconsidered part of the installation and are outside the scope of this standard. It does not include the installation ofLPG appliances to be used for commercial purposes or for boats. Also, gas supply equipment and gas appliancesseparate from and external to the body of the vehicle are not considered by this standard.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 331, Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings.EN 732, Specifications for dedicated liquefied petroleum gas appliances - Absorption refrigerators.EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water -Part 2: Non-hardening jointing compounds.EN 751-3, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water -Part 3: Unsintered PTFE tapes.EN 1057, Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heatingapplications.EN 12864:2001, Low pressure, non adjustable regulators having a maximum outlet pressure of less than or equalto 200 mbar with a capacity of less than or equal to 4 kg/h, and their associated safety devices for butane, propaneor their mixtures.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: Designation, dimensionsand tolerances.SIST EN 1949:2004



EN 1949:2002 (E)63 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1leisure accommodation vehicleunit of living accommodation for temporary or seasonal occupation that may meet requirements for constructionand use of road vehicles[prEN 13878:2000]3.2caravantrailer leisure accommodation vehicle that meets requirements for construction and use of road vehicles[prEN 13878:2000]3.3motor caravanself-propelled leisure accommodation vehicle that meets requirements for construction and use of road vehicles. Itcontains at least seats and table, sleeping accommodation which may be converted from the seats, cookingfacilities and storage facilities[prEN 13878:2000]3.4caravan holiday hometransportable leisure accommodation vehicle that does not meet requirements for construction and use of roadvehicles, that retains means for mobility and is for temporary or seasonal occupation[prEN 13878:2000]3.5liquefied petroleum gas (LPG)mixture of light hydrocarbons, gaseous under conditions of normal temperature and pressure, and maintained inthe liquid state by increase of pressure or lowering of temperature. The principle components are propane,propene, butanes and butenesNOTELPG can be obtained as commercial butane, commercial propane or a mixture of the two.3.6LPG applianceappliance that is designed for heating, cooking, lighting, refrigeration or hot water production, using LPG as itsenergy source3.7LPG systemassembly of an installation and its appliances3.8liquefied petroleum gas installationInstallation usually consisting of fuel container(s), pressure regulator(s), piping, hoses and shut-off devices,providing liquefied petroleum gas to appliances3.9pressure regulation systema system incorporating one or more regulators to reduce the supply pressure of the system to the required workingpressure for the appliance(s)SIST EN 1949:2004



EN 1949:2002 (E)73.10room sealed applianceappliance that has the combustion system, including the air inlet and products outlet, isolated from any internalarea3.11open-flue applianceappliance designed to be connected to a flue via a draught diverter, its combustion air being drawn from the roomor internal space in which it is installed3.12closed-flue applianceappliance where the flue is closed from a room or internal space due to the absence of a draught diverter, fluebreak and any draught break within the flue3.13flueless applianceappliance that discharges its products of combustion into the compartment in which it is installed3.14flueduct designed to convey the products of combustion to the exterior of a vehicle3.15flue terminalthat part of the flue system through which the products of combustion are discharged to the outside (cowl)3.16central heating systema system which consists of a central LPG heating appliance and a distribution system which does not form a directpart of the LPG installation3.17shut-off valvedevice to interrupt the flow of gas, having one inlet and one or more individually controlled outlets3.18liquefied petroleum gas cylinderportable container for liquefied petroleum gas[prEN 13878:2000]3.19cylinder compartmentspace specially constructed to accommodate one or more liquefied petroleum gas cylinders3.20flame supervision devicedevice that has a sensing element, activated by the presence or absence of a flame, that causes the inlet of theLPG supply to a burner to be opened or closed3.21pilotsmall burner that provides a continuously burning flame to ignite a main burner when required3.22soundnessabsence of leakage greater than the specified limitSIST EN 1949:2004



EN 1949:2002 (E)83.23soft solderingsoldering for which the lowest temperature of the melting range, after application, is less than 450°C3.24fixed ventilationpermanent measures that ensure the minimum provision of fresh air3.25free area of ventilationtotal area of the apertures in a ventilator or grill3.26ventilatordevice that allows the passage of air for the ventilation of a compartment3.27low pressure hosepipeline of flexible, LPG resistant material for use at working pressure3.28high pressure hosepipeline of reinforced flexible LPG resistant material for use at high pressure, normally supply pressure3.29change-over valvedevice to allow selective use of interconnected liquefied petroleum gas cylinders3.30thermostatautomatic device to maintain a selected constant temperature3.31users handbookdocument that provides information to the user of a leisure accommodation vehicle on its operation, maintenance,repair etc.3.32working pressurepressure at the inlet of a LPG appliance while it is in operation3.33readily accessibleitem capable of being reached quickly and safely for effective use under emergency conditions without the use oftoolsNOTEThe key of a lock is not regarded as a tool.3.34accessibleitem capable of being reached for inspection, removal or maintenance with or without the use of tools4 General requirements4.1 Dynamic loadsThe LPG system shall be designed to withstand the dynamic loads during normal operation including movement ofthe vehicle and to fulfil the operational requirements of the appliances.SIST EN 1949:2004



EN 1949:2002 (E)94.2 Soundness4.2.1 RequirementsThe LPG system shall fulfil the following soundness requirements if tested at a test pressure of 150 mbar with air.The decrease in pressure shall not exceed 10 mbar for a test volume of at least 700 cm3. If necessary, anadditional test volume of 600 cm3 should be used.4.2.2 TestThe soundness may be tested with air using the following procedure, however this does not preclude other testmethods. The pipework from the connection of the pressure regulating system to the closed taps of the appliancesare tested with an overpressure of 150 mbar. After a period of 5 min, to allow for temperature equilibrium, thepressure is maintained for a further period of 5 min. Parts of the LPG system operating at pressures above workingpressure, if any, are tested with an appropriate leak detection solution at operational pressure.NOTEThe LPG installation installer should issue a certificate for each leisure accommodation vehicle or other road vehiclestating the compliance with EN 1949.5 Cylinder compartments5.1 GeneralWith the exception of 5.2 cylinder compartments shall be sealed against the habitational volume and shall haveexternal access only. Any cylinder placement shall provide a minimum distance from any heat source as shown inFigure 1.SIST EN 1949:2004



EN 1949:2002 (E)10a) Top viewb) Side viewKey1Example of allowed position of the exhauster2LPG cylinder compartment3LPG cylinders4Outside the vehicleR = D = D1 = 250 mmD2 = 300 mmFigure 1
— The shaded areas represent the volume where no part of exhaust system shall be locatedwithout installation of the protection shieldAlternatively, thermal shielding shall be installed to prevent entry of exhaust gases into the compartment, orprojection of the exhaust heat flow towards the cylinder(s) (see Figure 2).SIST EN 1949:2004



EN 1949:2002 (E)11Key1Exhauster2LPG cylinder compartment3LPG cylinders4Outside the vehicle5Inside the vehicle6Ventilation7Driving direction8Thermal shieldingE = 25 mmFigure 2 — Example of shielding that can be installedDimension E shall not be smaller than 25 mm. The minimum area of low level ventilation shall be maintained, asspecified in 5.4.In the example above, the area of low level ventilation is based on 10 000 mm2.5.2 Cylinder compartments with internal accessFor motor caravans and other vehicles where penetration of a type approved base vehicles bodywork would berequired to provide external access, internal access to the compartment is permitted provided the followingconditions are met:a) the compartment can contain a maximum of two cylinders each having a capacity of not more than 16 kg;b) access between the compartment and the habitable area is only provided via an attached sealed door orhatch, the bottom edge of which is not less than 50 mm above the compartment floor.5.3 Cylinders secured outside the vehicleFor vehicles of category N of Directive 70/156/EEC support shall be provided to secure cylinders outside thevehicle, but within the body contour unless a compartment complying with 5.2 is provided.SIST EN 1949:2004



EN 1949:2002 (E)125.4 Ventilation for cylinder compartments without internal accessPermanent ventilation of any cylinder compartment shall be provided to the exterior.If the ventilation is provided only at low level, the free area shall be at least 2 % of the compartment floor area witha minimum of 10 000 mm2. If the ventilation is provided at high and low level the free area shall be at least 1 % ofthe compartment floor area at each level and not less than 5 000 mm2 at each level. It shall not be possible for anypart of the ventilation area to be obstructed by a cylinder.5.5 Ventilation for cylinder compartments with internal accessAlternatively, for cylinder compartments complying with 5.2 the fixed ventilation may be provided via one ductprovided the following additional conditions are complied with:a)
only one cylinder may be installed with a maximum capacity of 7 kg;b) the duct shall have a minimum internal diameter of 20 mm;c) the maximum length of the duct shall not exceed 5 times the internal diameter of the duct. It may be extended toten times the internal diameter of the duct, if this is necessary, to avoid interference with underfloor flue outlets;d) the duct shall be positioned at low level in the floor and be resistant to LPG;e) the duct shall fall throughout its entire length to the outside of the vehicle.5.6 Appliances, components and fittings in cylinder compartmentsNo appliances, components or fittings that in normal use can damage the installation or can ignite escaping gasshall be installed in a cylinder compartment (e.g. batteries or uninsulated electrical connections etc.).5.7 Requirements for the construction of cylinder compartmentsThe cylinder housing shall be so designed that:a) Cylinders can be secured rigidly in an upright position with the valve uppermost to operate only in the gaseousphase to prevent inadvertent movement when the vehicle is in motion. For this purpose there shall be means ofsecuring the cylinders at high and low level;NOTEA pull-out tray for the placement of the cylinder(s) is permitted inside the cylinder compartment to facilitate theexchange of cylinders if the cylinders can be placed in this device in an upright position and can be secured rigidly.b) access to any connections, changeover valves and pressure regulation systems is not obstructed;c) the replacement of cylinders can be made without disturbing the installation or ancillary equipment;d) it is possible for any cylinder securing device to be opened and closed without the use of tools.These requirements also apply to other vehicles with supports as specified in 5.3.SIST EN 1949:2004



EN 1949:2002 (E)136 Pressure regulation systems and working pressures6.1 Pressure regulation systems6.1.1The LPG installation shall have a pressure reduction system installed and this shall be fitted before thevehicle is first sold to the consumer.Pressure regulation systems in road vehicles shall have a fixed working pressure of 30 mbar and comply with therequirements of EN 12864:2001, annex D. The flow rate of the pressure regulation system shall be at least themaximum capacity of the entire installation, including all appliances installed by the manufacturer.For caravan holiday homes with LPG cylinder supply, the pressure regulation system shall meet the relevantrequirements of EN 12864, and national regulations for domestic LPG installations should be considered.Where a container compartment is provided it shall be designed to contain the pressure regulation system. It shallbe designed to be fitted:a) to the LPG cylinder valve;b) if the pressure regulation system is mounted remote from the cylinders, the connection shall be by highpressure flexible hose which shall be as short as possible, not exceeding 400 mm in length. Where a pull-outtray for the placement of cylinders is provided, a maximum length of 750 mm hose is permitted.NOTETo avoid dismounting of a fixed pressure regulation system for pressure test purposes it is recommended to install aclosing device with a testing nipple downstream of the pressure regulation system;6.1.2Pressure regulation systems installed on the outside of the vehicle without a housing shall have the ventsprotected against the ingress of dirt and water by positioning or covers.6.2 Marking of the working pressureAny supply line shall be permanently identified with a label at the connection to the pressure regulation system withthe working pressure in mbar.6.3 Devices to protect against over-pressureFor road vehicles a device/devices shall be provided within the installation or integral with the pressure regulationdevice to ensure that a pressure greater than 150 mbar is not supplied to any appliance.If an over-pressure relief valve is fitted it shall be arranged to vent into the cylinder compartment or directly to theoutside.6.4 Connection of pressure regulators to rigid pipework - Low pressure supplyLow pressure flexible hoses with a maximum length of 400 mm may be fitted between pressure regulators and therigid pipework within the LPG cylinder compartment. Where a pull-out tray for the placement of cylinders isprovided, a maximum length of 750 mm hose is permitted.6.5 Connection of a dual cylinder systemCylinder compartments to contain a dual cylinder system shall be provided with an automatic device to prevent theescape of unburned gas when either cylinder is disconnected.SIST EN 1949:2004



EN 1949:2002 (E)146.6 Connection of an external
LPG supply by means of a plug-in connectorIf a plug-in connector for the connection of an external LPG supply is fitted it shall be installed outside the habitablevolume. Where this provision is included an automatic system shall be installed to ensure that the external LPGsupply cannot leak out through the system's pressure regulation system, e.g. when the pressure regulation systemis disconnected from the cylinder. It shall
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