EN 1949:2011

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 FahrzeugenSpécifications pour les installations des systèmes GPL pour les besoins domestiques dans les véhicules habitables de loisirs et dans les autres véhiculesSpecification for the installation of LPG systems for habitation purposes in leisure accommodation vehicles and accommodation purposes in other vehicles43.100Osebni avtomobili. Bivalne prikolice in lahke prikolicePassenger cars. Caravans and light trailersICS:Ta slovenski standard je istoveten z:EN 1949:2011SIST EN 1949:2011en,fr,de01-september-2011SIST EN 1949:2011SLOVENSKI
STANDARDSIST EN 1949:2004/A1:2005SIST EN 1949:20041DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1949
February 2011 ICS 43.100; 97.200.30 Supersedes EN 1949:2002English Version
Specification for the installation of LPG systems for habitation purposes in leisure accommodation vehicles and accommodation purposes in other vehicles
Spécifications relatives aux installations des systèmes GPL pour les besoins domestiques dans les véhicules habitables de loisirs et dans les autres véhicules
Festlegungen für die Installation von Flüssiggasanlagen in bewohnbaren Freizeitfahrzeugen und zu Wohnzwecken in anderen Fahrzeugen This European Standard was approved by CEN on 1 January 2011.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1949:2011: ESIST EN 1949:2011

National situations in the Member States . 33Annex B (informative)
Countries where underfloor flue is not permitted . 34Annex C (informative)
Manufacturer declaration . 35Bibliography . 37 SIST EN 1949:2011

[EN 13878] 3.4 caravan holiday home transportable leisure accommodation vehicle that does not meet requirements for construction and use of road vehicles, that retains means for mobility and is for temporary or seasonal occupation
[EN 13878] SIST EN 1949:2011
NOTE In some countries, UN numbers 1011 and 1978 may also be designated LPG. 3.6 LPG appliance appliance that is designed for heating, cooking, lighting, refrigeration, hot water production or electricity production (fuel cell or generator), using LPG as its energy source 3.7 LPG system assembly of an installation and its appliances
3.8 liquefied petroleum gas installation installation usually consisting of fuel container(s), pressure regulator(s), piping, hoses and shut-off devices, providing liquefied petroleum gas to appliances 3.9 pressure regulation system system incorporating one or more regulators and/or an automatic change-over device to reduce the supply pressure of the system to the required working pressure for the appliance(s) 3.10 room sealed appliance appliance that has the combustion system, including the air inlet and products outlet, isolated from any internal area 3.11 open-flue appliance appliance designed to be connected to a flue via a draught diverter, its combustion air being drawn from the room or internal space in which it is installed 3.12 closed-flue appliance appliance where the flue is closed from a room or internal space due to the absence of a draught diverter, flue break and any draught break within the flue 3.13 flueless appliance appliance that discharges its products of combustion into the compartment in which it is installed 3.14 flue duct designed to convey the products of combustion to the exterior of a vehicle 3.15 flue terminal part of the flue system through which the products of combustion are discharged to the outside (cowl) 3.16 shut-off valve device to interrupt the flow of gas, having one inlet and one or more individually controlled outlets SIST EN 1949:2011

[EN 13878] 3.18 cylinder compartment space specially constructed to accommodate one or more liquefied petroleum gas cylinders 3.19 flame supervision device device that has a sensing element, activated by the presence or absence of a flame, that causes the inlet of the LPG supply to a burner to be opened or closed 3.20 pilot small burner that provides a continuously burning flame to ignite a main burner when required 3.21 tightness absence of leakage greater than the specified limit 3.22 hard soldering soldering for which the lowest temperature of the melting range, after application, is not less than 450 °C 3.23 fixed ventilation permanent measures that ensure the minimum provision of fresh air 3.24 free area of ventilation total area of the apertures in a ventilator or grill 3.25 ventilator device that allows the passage of air for the ventilation of a compartment 3.26 hose assembly length of hose with suitably attached end fittings [EN ISO 14113] 3.27 low pressure hose assembly hose assembly, LPG resistant, for use at working pressure 3.28 high pressure hose assembly hose assembly, LPG resistant, for use at high pressure, normally supply pressure 3.29 change-over device device to allow selective use of interconnected LPG cylinders SIST EN 1949:2011

There shall be no connection between the both gas supplies. The cylinder(s) for both gas supplies can be installed in the same cylinder compartment. If two cylinder compartments are used, there shall be a warning sign inside both the compartments which advises the user that there is a second gas supply. Inside the cylinder compartment it shall clearly indicated which appliances are supplied by each gas supply. 5 Cylinder compartments 5.1 General For road going vehicles cylinders shall be installed in cylinder compartments, except when they are installed according to 5.3 or when they are used in the conditions of 6.6. With the exception of 5.2 and 5.6 cylinder compartments shall be sealed against the accommodation space and shall have external access only. Any cylinder placement shall provide a minimum distance from the engine exhaust system as shown in Figure 1. SIST EN 1949:2011

a) Top view
b) Side view Key 1 example of allowed position of the exhauster 2 LPG cylinder compartment 3 LPG cylinders 4 outside the vehicle R = D = D1 ≥ 250 mm D2 ≥ 300 mm The shaded areas represent the volume where no part of exhaust system shall be located without installation of the protection shield. Figure 1 — Minimum distance from the engine exhaust system SIST EN 1949:2011

Key 1 exhauster 2 LPG cylinder compartment 3 LPG cylinders 4 outside the vehicle 5 inside the vehicle 6 ventilation 7 driving direction 8 thermal shielding E ≥ 25 mm Figure 2 — Example of shielding that can be installed Dimension E shall not be smaller than 25 mm. The minimum area of low level ventilation shall be maintained, as specified in 5.5. NOTE In Figure 2, the area of low level ventilation is based on 10 000 mm2. 5.2 Cylinder compartments with internal access For motor caravans and other vehicles where penetration of a type approved base vehicle bodywork would be required to provide external access, internal access to the compartment is permitted provided the following conditions 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 or hatch, the bottom edge of which is not less than 50 mm above the compartment floor. 5.3 Cylinders secured outside the vehicle For vehicles of category N of Directive 2007/46/EC support shall be provided to secure cylinders outside the vehicle, but within the body contour unless a compartment complying with 5.2 is provided. SIST EN 1949:2011

Figure 3 — warning sign "read instructions" 5.5 Ventilation for cylinder compartments Permanent 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 with a minimum of 10 000 mm2. If the ventilation is provided at high and low level the free area shall be at least 1 % of the compartment floor area at each level and not less than 5 000 mm2 at each level. It shall not be possible for any part of the ventilation area to be obstructed by a cylinder. 5.6 Cylinder compartments with internal access and low capacity cylinders
The fixed ventilation for cylinder compartments complying with 5.2 may be provided via one vent provided the following conditions are complied with: a) the compartment can contain a maximum of two cylinders with a maximum combined capacity of 7 kg; b) the vent shall have a minimum internal diameter of 20 mm; c) where a duct is attached to the ventilation opening the maximum length of the duct shall not exceed 5 times the internal diameter of the duct. It may be extended to ten times the internal diameter of the duct, if it is necessary, to avoid interference with under floor 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. SIST EN 1949:2011

(40050100+−) mm; c) where a pull-out tray for the placement of cylinders is provided and the regulation system is mounted at the wall, a maximum length of 750 mm hose assembly is permitted. It shall not be possible to create any strain in the gas supply hose assembly when the tray is pulled out. If the regulation system is installed on a pull-out tray (see Figure 4); then the connection shall be a high pressure flexible hose assembly with a length of (40050100+−) mm. SIST EN 1949:2011

Key 1 cylinder(s) 2 high pressure hose(s) 3 pressure regulation system 4 rigid piping 5 low pressure hose 6 pull-out tray 7 cylinder compartment Figure 4 — Example of positions of pressure regulation systems and hose assemblies on a cylinder pull-out tray Where the pressure regulation system is mounted remote from the cylinder the connection shall be designed to prevent accidental loosening and it shall not be possible to apply strain to the hose or connections when changing cylinders. The hose assembly shall be free from strain when connected to the size(s) of gas cylinder stated in the users handbook. The pressure regulation system shall be located so, that the hose assembly rises continuously throughout its length from the cylinder outlet to the pressure regulation system inlet. A suitable connection point for test equipment shall be provided to verify the tightness of the gas system from the outlet of the regulator to the inlet of the appliances. 6.1.2 Pressure regulation systems installed on the outside of the vehicle without housing shall have the vents protected against the ingress of dirt and water by positioning or covers. SIST EN 1949:2011

NOTE There are two alternative types of safety closing devices:
excess flow valves, which close when a specific flow of LPG is reached, or
crash sensor activated valve, which detects an abnormal acceleration/deceleration of the vehicle (accident)
and closes the LPG supply by means of an automatic valve. 6.2 Marking of the working pressure Each supply line shall be permanently identified with a label in the vicinity of the connection to the pressure regulation system with the working pressure in mbar. 6.3 Devices to protect against over-pressure For vehicles a device/devices shall be provided within the installation or integral with the pressure regulation system to ensure that a pressure greater than 150 mbar is not supplied to any appliance. Where an over-pressure relief valve is fitted it shall vent into the cylinder compartment or directly to the outside of the vehicle. 6.4 Connection of pressure regulators to rigid pipework - Low pressure supply Low pressure flexible hoses with a maximum length of (40050100+−) mm may be fitted between pressure regulators and the rigid pipework within the LPG cylinder compartment. Where a pull-out tray for the placement of cylinders is provided, a maximum length of 750 mm hose is permitted. It shall not be possible to create any strain in the low pressure flexible hose when the tray is pulled out. NOTE Where the pressure regulation system is mounted on a pull-out tray (according to 6.1.1 c) the use of rigid piping between the outlet of the pressure regulation system and the end of the pull-out tray is permitted. 6.5 Connection of a dual cylinder system Changeover devices for the connection of a dual cylinder system shall be provided with an automatic device to prevent the escape of gas when either cylinder is disconnected. 6.6 Connection of an external LPG supply by means of a plug-in connector If a plug-in connector for the connection of an external LPG supply is fitted in addition to an internal supply it shall be permanently fixed and a change over valve shall be installed which enables one of the two LPG sources (external or onboard). In the vehicle installation a connection according to Figure 5 (EN 561) shall be installed upstream of the regulator (wall mounted). A manual change over valve shall be installed according to Figure 6 to prevent the flow of gas in the direction of the cylinder valve in case of external supply and to prevent the flow of gas in the direction of the external supply connection in case of internal supply. SIST EN 1949:2011

1) The minimum hardness of the male element surface is 270 HV10 for a minimum length of 15,2 mm. 2) The internal diameter C shall be for a minimum length of 20 mm. Dimensions and tolerances of coaxiality and perpendicularity in millimeters, surfaces roughness values in micrometers Key A h10, 7,3 mm B h10, 12,3 mm C JS13, 5 mm Figure 5 — male connector 0,5 bar The dimensions and fabrication details not specified in Figure 5 are left to the discretion of the manufacturer, with the proviso that quick-action couplings with shut-off valves of the same type shall be interchangeable, regardless of their manufacturer. SIST EN 1949:2011

Key 1 cylinder 2 hose
3 change over valve 4 regulator 5 piping according 7.2 6 plug in socket 7 external LPG supply Figure 6 — Connection of an external LPG supply 0,5 bar The inlet pressure of the external supply shall not be lower than 0,3 bar and not exceed 0,5 bar. The inlet connection shall be marked with “LPG inlet max 0,5 bar”. The plug-in connector shall be incompatible with any external outlet connection (see 9.7). The plug-in connector shall be protected against dirt by means of cover. If the plug-in connector is fitted inside the cylinder compartment it shall be possible to make up the connection to the system and subsequently to close the cylinder compartment door without causing any damage to the supply hose.
7 Components 7.1 Hoses/Hose assemblies Only hoses and hose assemblies appropriate for the first country of sale (e.g. temperature resistance, colour coding) complying with the requirements of that country shall be provided. 7.2 Pipes Pipes shall be made of copper complying with EN 1057, seam welded steel complying with EN 10305-2, seamless steel complying with EN 10305-1 or stainless steel complying with EN ISO 1127 and shall have a minimum nominal wall thickness in compliance with Table 1: SIST EN 1949:2011

6 0,6 0,5 8 0,8 0,8 10 1,0 1,0 12 1,0 1,0 15a
1,0 1,0 18a 1,0 1,0 22a 1,0 1,0 a For caravan holiday homes the above values for wall thickness are recommended, but it is acceptable in countries where National Standards permit, to use a different wall thickness in accordance with EN 1057.
7.3 Pipe fittings 7.3.1 Metallic fittings shall be of the following types (see Figure 7). SIST EN 1949:2011

a) Cutting ring type fitting
b) Capillary type fitting
c) Flared type fitting
d) Compression fitting
e) Threaded fitting for nozzle Figure 7 — Permitted pipe fittings SIST EN 1949:2011

This paragraph does not apply to installations according to 8.8.5.
7.6 Manual change over valve The manual change over valve (2/1 valve) shall comply with the basic requirements of EN 331. The direction of the gas flow from the source shall be clearly identified by the position of the control handle. 8 Installation design 8.1 General All unions and joints shall be accessible, shut-off valves and hoses shall be readily accessible. SIST EN 1949:2011

If confusion with other services is possible the LPG pipes shall be clearly identified. 8.7 Fixing In road vehicles steel or stainless steel pipes shall be secured at intervals not exceeding 1
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