SIST EN 1949:2022

SLOVENSKI STANDARD
SIST EN 1949:2022
01-april-2022
Nadomešča:
SIST EN 1949:2011+A1:2013
Specifikacija za vgradnjo sistemov na utekočinjeni naftni plin (UNP) v bivalna
vozila za prosti čas in druga bivalna vozila
Specification for the installation of LPG systems for habitation purposes in leisure
accommodation vehicles and accommodation purposes in other vehicles
Festlegungen für die Installation von Flüssiggasanlagen in bewohnbaren
Freizeitfahrzeugen und zu Wohnzwecken in anderen Fahrzeugen
Spécifications relatives aux installations des systèmes GPL pour les besoins
domestiques dans les véhicules habitables de loisirs et dans les autres véhicules
Ta slovenski standard je istoveten z: EN 1949:2021
ICS:
43.100 Osebni avtomobili. Bivalne Passenger cars. Caravans
prikolice in lahke prikolice and light trailers
75.160.30 Plinska goriva Gaseous fuels
SIST EN 1949:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 1949:2022

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SIST EN 1949:2022


EN 1949
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2021
EUROPÄISCHE NORM
ICS 43.100; 97.200.30 Supersedes EN 1949:2011+A1:2013
English 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 Festlegungen für die Installation von Flüssiggasanlagen
GPL pour les besoins domestiques dans les véhicules in bewohnbaren Freizeitfahrzeugen und zu
habitables de loisirs et dans les autres véhicules Wohnzwecken in anderen Fahrzeugen
This European Standard was approved by CEN on 23 August 2021.

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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1949:2021 E
worldwide for CEN national Members.

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SIST EN 1949:2022
EN 1949:2021 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 7
4 General Requirements . 11
4.1 General . 11
4.2 Dynamic loads . 11
4.3 Tightness . 12
4.4 Second LPG system . 12
5 LPG cylinder housing . 13
5.1 LPG Cylinder compartment . 13
5.2 External access without cylinder compartment . 17
6 LPG tank compartment . 17
6.1 General . 17
6.2 Ventilation for LPG tank compartments . 18
6.3 Electric equipment in LPG tank compartments . 18
6.4 Distance from the engine exhaust . 18
7 Pressure regulation systems and working pressures . 18
7.1 Working pressures . 18
7.2 Pressure regulation systems . 18
7.3 Marking of the working pressure . 24
7.4 Device(s) to protect against over-pressure . 24
7.5 Connection of a dual LPG cylinder system . 24
7.6 Connection of a multi LPG cylinder system for caravan holiday homes . 24
7.7 Connection of an external LPG supply by means of a plug-in connector . 24
8 Components . 26
8.1 Hose assemblies. 26
8.2 Pipes . 27
8.3 Pipe fittings . 28
8.4 Jointing materials . 30
8.5 Shut-off valves . 30
8.6 Manual changeover valve . 30
8.7 Leak detection device . 30
9 Installation design . 30
9.1 General . 30
9.2 Protection against mechanical damage . 30
9.3 Avoidance of corrosion . 30
9.4 Pipe sizing . 30
9.5 Pipe fittings . 31
9.6 Positioning of LPG pipes near to other services . 31
9.7 Fixing of pipes. 31
9.8 Shut-off valves . 31
9.9 Equipotential bonding of LPG pipes . 33
10 Connection of appliances to the LPG supply . 33
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SIST EN 1949:2022
EN 1949:2021 (E)
10.1 General . 33
10.2 Road vehicles. 34
10.3 Slide outs of road vehicles . 34
10.4 Caravan holiday homes . 35
11 LPG Appliances . 35
11.1 Suitability of LPG appliances . 35
11.2 Installations . 35
11.3 Space heaters . 35
11.4 Water heaters. 36
11.5 Cooking appliances . 37
11.6 Refrigerators . 37
11.7 Gas lights . 37
11.8 LPG fuel cells . 37
11.9 LPG power generators . 38
12 Flueing . 38
12.1 Flues . 38
12.2 Flue terminals . 38
12.3 Weather protection . 40
12.4 Draught diverters . 40
12.5 Accessibility of flues . 40
13 Installation of LPG tanks on road vehicles supplying LPG appliances . 40
13.1 LPG tank and accessories . 40
13.2 Installation of the LPG tank and LPG system requirements . 41
14 User’s handbook. 42
Annex A (informative) National situation concerning the maximum flow rate of pressure
regulating devices for caravan holiday homes . 44
Annex B (informative) National situations in the Member States . 46
Annex C (informative) Manufacturer declaration . 48
Bibliography . 50
3

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SIST EN 1949:2022
EN 1949:2021 (E)
European foreword
This document (EN 1949:2021) has been prepared by Technical Committee CEN/TC 181 “Appliances and
leisure vehicle installations using liquefied petroleum gas and appliances using natural gas for outdoor
use”, the secretariat of which is held by AFNOR.
This 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 June 2022, and conflicting national standards shall be
withdrawn at the latest by June 2023.
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 1949:2011+A1:2013.
The following main technical changes have been made compared to EN 1949:2011+A1:2013:
a) definition for LPG tank compartment has been added;
b) declaration of conformity is now mandatory;
c) several clauses have been separated to clearly state the requirements for road vehicles and caravan
holiday homes;
d) requirements for LPG cylinder compartment with internal access has been amended;
e) requirements for LPG tank compartment have been added;
f) requirements for electric installations inside LPG cylinder/tank compartments have been extended;
g) requirements for slide outs have been added;
h) requirements for LPG tanks and LPG tank installations have been extended;
i) Annex A for national regulation concerning the maximum flow rate of pressure regulating devices
for caravan holiday homes has been added;
j) Annex B (old) has been deleted;
k) former Annex A became Annex B;
l) Annex C has been updated.
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 organisations 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, Turkey and the United
Kingdom.
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SIST EN 1949:2022
EN 1949:2021 (E)
1 Scope
This document specifies the requirements for the installation of liquefied petroleum gas systems for
habitation purposes in leisure accommodation vehicles and for accommodation purposes in other
vehicles.
It details health and safety requirements on:
— the selection of materials;
— components and appliances;
— design considerations;
— tightness testing of installations;
— the contents of the user's handbook.
This document only covers installations supplied with 3rd family gases (LPG).
It does not cover:
— water connections or electrical power supplies to the appliance(s);
— portable appliances, incorporating their own LPG supply;
— the installation of LPG appliances to be used for commercial purposes;
— LPG installations on boats;
— LPG supply equipment and LPG appliances separate from and external to the body of the vehicle.
This document covers LPG tanks fulfilling the requirements of the Pressure Equipment Directive
(2014/68/EU).
Attention is drawn to the Pressure Equipment Directive (2014/68/EU) for any parts of the installation
operating above 0,5 bar.
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 331:2015, Manually operated ball valves and closed bottom taper plug valves for gas installations for
buildings
EN 624, Specification for dedicated LPG appliances - Room sealed LPG space heating equipment for
installation in vehicles and boats
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
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SIST EN 1949:2022
EN 1949:2021 (E)
EN 1057, Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and
heating applications
EN 1254-1, Copper and copper alloys - Plumbing fittings - Part 1: Capillary fittings for soldering or brazing
to copper tubes
EN 1254-2, Copper and copper alloys - Plumbing fittings - Part 2: Compression fittings for use with copper
tubes
EN 1254-4, Copper and copper alloys - Plumbing fittings - Part 4: Threaded fittings
EN 10226-1, 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 10305-1, Steel tubes for precision applications - Technical delivery conditions - Part 1: Seamless cold
drawn tubes
EN 10305-2, Steel tubes for precision applications - Technical delivery conditions - Part 2: Welded cold
drawn tubes
EN 10305-3, Steel tubes for precision applications - Technical delivery conditions - Part 3: Welded cold sized
tubes
EN 10305-4, Steel tubes for precision applications - Technical delivery conditions - Part 4: Seamless cold
drawn tubes for hydraulic and pneumatic power systems
EN 12979:2002, Automotive LPG-systems - Installation requirements
EN 14291, Foam producing solutions for leak detection on gas installations
EN 14800, Corrugated safety metal hose assemblies for the connection of domestic appliances using gaseous
fuels
EN 15033, Room sealed storage water heaters for the production of sanitary hot water using LPG for
vehicles and boats
EN 15266, Stainless steel pliable corrugated tubing kits in buildings for gas with an operating pressure up
to 0,5 bar
EN 16129:2013, Pressure regulators, automatic change-over devices, having a maximum regulated
pressure of 4 bar, with a maximum capacity of 150 kg/h, associated safety devices and adaptors for butane,
propane, and their mixtures
EN 16436-2:2018, Rubber and plastics hoses, tubing and assemblies for use with propane and butane and
their mixtures in the vapour phase — Part 2: Assemblies
EN ISO 1127, Stainless steel tubes - Dimensions, tolerances and conventional masses per unit length (ISO
1127)
EN ISO 8434-1, Metallic tube connections for fluid power and general use - Part 1: 24° cone connectors (ISO
8434-1)
ISO 8434-2, Metallic tube connections for fluid power and general use — Part 2: 37 degree flared connectors
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SIST EN 1949:2022
EN 1949:2021 (E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
leisure accommodation vehicle
unit of living accommodation for temporary or seasonal occupation that may meet requirements for
construction and use of road vehicles
[SOURCE: EN 13878:2019, definition 3.19]
3.2
caravan
trailer leisure accommodation vehicle that meets requirements for construction and use of road vehicles
[SOURCE: EN 13878:2019, definition 3.5]
3.3
motor caravan
self-propelled leisure accommodation vehicle that meets requirements for construction and use of road
vehicles. It contains at least seats and table, sleeping accommodation which may be converted from the
seats, cooking facilities and storage facilities
[SOURCE: EN 13878:2019, definition 3.24]
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
[SOURCE: EN 13878:2019, definition 3.6]
3.5
liquefied petroleum gas (LPG)
mixture of light hydrocarbons composed mainly of propane, butane and their isomers, gaseous under
conditions of normal temperature and pressure
Note 1 to entry: LPG is maintained in its liquid state by increased pressure or lowered temperature.
Note 2 to entry:  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
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SIST EN 1949:2022
EN 1949:2021 (E)
3.8
LPG installation
installation usually consisting of fuel container(s), pressure regulator(s), piping, hose assemblies and
shut-off devices, providing liquefied petroleum gas in gaseous phase to appliances
3.9
pressure regulation system
system incorporating one or more regulators with or without change-over device to reduce the supply
pressure of the LPG system to the required working pressure for the appliance(s)
3.10
regulator
device which maintains a regulated pressure within preset limits, whatever the upstream pressure, rate
and temperature
[SOURCE: EN 16129:2013, definition 3.1.1]
3.11
changeover device
device which maintains the gas supply continuity by using gas from a “LPG cylinder”, a “LPG tank” or an
external supply manually chosen by the user or automatically
3.12
room sealed appliance
appliance that has the combustion system, including the air inlet and products outlet, isolated from any
internal area
3.13
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
3.14
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
3.15
flueless appliance
appliance that discharges its products of combustion into the compartment in which it is installed
3.16
flue
duct designed to convey the products of combustion to the exterior of a vehicle
3.17
flue terminal
part of the flue system through which the products of combustion are discharged to the outside (cowl)
3.18
shut-off valve
device to interrupt the flow of gas, having one inlet and one or more individually controlled outlets
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SIST EN 1949:2022
EN 1949:2021 (E)
3.19
liquefied petroleum gas cylinder
portable container for liquefied petroleum gas
Note 1 to entry: portable containers which are refilled outside the vehicle are considered as cylinders (see
ADR 4.1.4, P200).
[SOURCE: EN 13878:2019, definition 3.21]
3.20
LPG cylinder compartment
space specially constructed to accommodate liquefied petroleum gas cylinder(s)
3.21
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
3.22
pilot
small burner that provides a continuously burning flame to ignite a main burner when required
3.23
tightness
absence of leakage greater than the specified limit
3.24
hard soldering
soldering for which the lowest temperature of the melting range, after application, is not less than 450 °C
3.25
fixed ventilation
permanent measures that ensure the minimum provision of fresh air
3.26
free area of ventilation
total area of the apertures in a ventilator or grill
3.27
ventilator
device that allows the passage of air for the ventilation of a compartment
3.28
hose assembly
length of hose with suitably attached end fittings
[SOURCE EN ISO 14113:2013, definition 3.5]
3.29
low pressure hose assembly
hose assembly, LPG resistant, for use at working pressure
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SIST EN 1949:2022
EN 1949:2021 (E)
3.30
high pressure hose assembly
hose assembly, LPG resistant, for use at high pressure, normally supply pressure
3.31
users handbook
document that provides information to the user of a leisure accommodation vehicle on its operation,
maintenance, repair etc.
3.32
working pressure
pressure at the inlet of a LPG appliance while it is in operation
3.33
readily accessible
item capable of being reached quickly and safely for effective use under emergency conditions without
the use of tools
Note 1 to entry: The key of a lock is not regarded as a tool.
3.34
accessible
item capable of being reached for inspection, removal or maintenance with or without the use of tools
3.35
safety closing device
device which automatically interrupts the flow of gas due to an accidental disconnection of a hose
assembly or pipe installed downstream of the safety closing device
3.36
LPG tank
fixed container which can be refilled whilst in position on a vehicle and suitable for the storage of LPG
Note 1 to entry: This may supply LPG for gas appliances only.
3.37
underfloor flue
flue which discharges all or parts of the products of combustion into the space lying beneath and within
the plan view of the vehicle
3.38
leak detection device
device capable of indicating any downstream leakage
3.39
LPG tank compartment
space specially constructed to accommodate LPG tank(s)
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SIST EN 1949:2022
EN 1949:2021 (E)
3.40
Extra low voltage
ELV
voltage not exceeding 50 V a.c. or 120 V ripple free d.c. between conductors or to earth, but usually of a
nominal 12 V in leisure accommodation vehicles
[SOURCE EN 13878:2019, definition 3.14]
3.41
slide out
structural element, that can be moved to increase the habitational area of a road vehicle
4 General Requirements
4.1 General
The manufacturer or installer of an LPG system shall issue a declaration of conformity for each leisure
accommodation vehicle or other vehicle stating the compliance with EN 1949, including the test result of
4.3.2, it should include the information shown in Annex C and if applicable, national regulations.
For road vehicles, a label according to Figure 1, stating that all LPG appliances shall be turned off before
refilling (LPG, petrol, diesel or other fuels), shall be affixed inside the vehicle where it can be easily and
readily seen.

Figure 1 — Label stating to turn off all appliances in case of refilling
4.2 Dynamic loads
The L
...