SIST EN 1949:2022

Specification for the installation of LPG systems for habitation purposes in leisure accommodation vehicles and accommodation purposes in other vehicles

This European Standard 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 safety and health requirements on the selection of materials, components and appliances, on design considerations and tightness testing of installations and on the contents of the user's handbook.
This European Standard does not cover installations supplied from other than 3rd family gases (LPG), water connections or electrical power supplies to the appliance(s). Portable appliances, incorporating their own gas supply, are not considered part of the installation and are outside the scope of this standard. It does not include the installation of LPG appliances to be used for commercial purposes or for boats. Gas supply equipment and gas appliances separate from and external to the body of the vehicle are also not considered by this standard.

Festlegungen für die Installation von Flüssiggasanlagen in bewohnbaren Freizeitfahrzeugen und zu Wohnzwecken in anderen Fahrzeugen

Dieses Dokument legt die Anforderungen an die Installation von Flüssiggasanlagen in bewohnbaren Freizeitfahrzeugen und für Wohnzwecke in anderen Fahrzeugen fest.
Im Einzelnen sind Anforderungen an Gesundheit und Sicherheit zu Folgendem beschrieben:
—   Auswahl der Werkstoffe;
—   Bauteile und Geräte;
—   Bauweise;
—   Dichtheitsprüfung von Installationen;
—   Inhalt der Bedienungsanleitung.
Dieses Dokument gilt nur für solche Installationen, die mit Gasen der 3. Gasfamilie (Flüssiggas) betrieben werden.
Es gilt nicht für:
—   Wasseranschlüsse oder Stromversorgungen des Geräts bzw. der Geräte;
—   tragbare Geräte mit eigener Flüssiggasversorgung;
—   die Installation von Flüssiggasgeräten zu gewerblichen Zwecken;
—   Flüssiggasinstallationen auf Booten;
—   Flüssiggasversorgungseinrichtungen und Flüssiggasgeräte, die sich außerhalb des Fahrzeugs befinden.
Dieses Dokument gilt für Flüssiggastanks, die die Anforderungen der Druckgeräterichtlinie (2014/68/EU) erfüllen.
Für alle Teile der Installation, die mit Drücken über 0,5 bar betrieben werden, wird auf die Druckgeräterichtlinie (2014/68/EU) hingewiesen.

Spécifications relatives aux installations des systèmes GPL pour les besoins domestiques dans les véhicules habitables de loisirs et dans les autres véhicules

La présente Norme européenne spécifie les exigences applicables à l'installation de systèmes fonctionnant aux gaz de pétrole liquéfiés pour les besoins d’habitation dans les véhicules habitables de loisirs, et à des fins d’hébergement dans les autres véhicules.
Elle détaille les exigences relatives à la santé et à la sécurité pour :
—   le choix des matériaux ;
—   les composants et appareils d'utilisation ;
—   les considérations de conception ;
—   les essais d'étanchéité des installations ;
—   le contenu du manuel d'utilisation.
Ce document ne s'applique qu’aux installations alimentées par des gaz appartenant à la troisième famille (GPL).
Elle ne couvre pas :
—   les raccordements en eau ou en énergie électrique des appareils ;
—   les appareils portatifs disposant d'une alimentation en gaz incorporée ;
—   l'installation des appareils GPL utilisés pour les besoins commerciaux ;
—   les installations GPL dans les bateaux ;
—   l'équipement d'alimentation en GPL et les appareils GPL séparés et extérieurs au corps du véhicule.
Ce document couvre les réservoirs GPL qui satisfont aux exigences de la Directive Équipements sous Pression (2014/68/UE).
L’attention est portée sur la Directive Équipements sous pression (2014/68/UE) pour toute partie de l’installation fonctionnant au-delà de 0,5 bar.

Specifikacija za vgradnjo sistemov na utekočinjeni naftni plin (UNP) v bivalna vozila za prosti čas in druga bivalna vozila

Ta evropski standard določa zahteve za vgradnjo sistemov na utekočinjeni naftni plin v bivalna vozila za prosti čas in druga bivalna vozila. Podrobno določa varnostne in zdravstvene zahteve za izbiro materialov, komponent in aparatov, izdelavo in preskušanje trdnosti vgradenj ter vsebino uporabniškega priročnika.
Ta evropski standard ne zajema vgradenj, ki ne uporabljajo plinov tretje družine (LPG), vodovodnih priključkov ali električnega napajanja aparatov. Prenosni aparati z lastno oskrbo s plinom niso obravnavani kot del vgradnje in ne spadajo na področje uporabe tega standarda. Standard ne vključuje vgradnje aparatov na utekočinjeni naftni plin za komercialne namene ali plovila. Ta standard prav tako ne obravnava opreme za dovajanje plina in aparatov na plin, ki so ločeni od karoserije vozila in nameščeni zunaj nje.

General Information

• Status: Published
• Public Enquiry End Date: 09-May-2018
• Publication Date: 14-Mar-2022
• ICS: 43.100 - Passenger cars. Caravans and light trailers
• ICS: 75.160.30 - Gaseous fuels
• Technical Committee: PLN - Gas appliances for domestic use
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 11-Mar-2022
• Due Date: 16-May-2022
• Completion Date: 15-Mar-2022
• Ref Project: EN 1949:2021 - Specification for the installation of LPG systems for habitation purposes in leisure accommodation vehicles and accommodation purposes in other vehicles

Relations

• Replaces: SIST EN 1949:2011+A1:2013 - Specification for the installation of LPG systems for habitation purposes in leisure accommodation vehicles and accommodation purposes in other vehicles
• Effective Date: 01-Apr-2022

Standards Content (Sample)

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.

---------------------- Page: 1 ----------------------
SIST EN 1949:2022
---------------------- Page: 2 ----------------------
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.
---------------------- Page: 3 ----------------------
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

---------------------- Page: 4 ----------------------
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

---------------------- Page: 5 ----------------------
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.
---------------------- Page: 6 ----------------------
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
---------------------- Page: 7 ----------------------
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

---------------------- Page: 8 ----------------------
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
---------------------- Page: 9 ----------------------
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

---------------------- Page: 10 ----------------------
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
---------------------- Page: 11 ----------------------
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)
---------------------- Page: 12 ----------------------
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
...

SLOVENSKI STANDARD
oSIST prEN 1949:2018
01-april-2018
6SHFLILNDFLMD]DYJUDGQMRVLVWHPRYQDXWHNRþLQMHQLQDIWQLSOLQ813YELYDOQD
YR]LOD]DSURVWLþDVLQGUXJDYR]LOD

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: prEN 1949
ICS:
43.100 Osebni avtomobili. Bivalne Passenger cars. Caravans
prikolice in lahke prikolice and light trailers
75.160.30 Plinska goriva Gaseous fuels
oSIST prEN 1949:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 1949:2018
---------------------- Page: 2 ----------------------
oSIST prEN 1949:2018
DRAFT
EUROPEAN STANDARD
prEN 1949
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2018
ICS 43.100; 97.200.30 Will supersede 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 draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 181.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1949:2018 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 1949:2018
prEN 1949:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 7

4 General Requirements ............................................................................................................................... 11

4.1 General ............................................................................................................................................................. 11

4.2 Dynamic loads ............................................................................................................................................... 12

4.3 Tightness ......................................................................................................................................................... 12

4.3.1 Requirements ................................................................................................................................................ 12

4.3.2 Test .................................................................................................................................................................... 12

4.4 Second LPG system ...................................................................................................................................... 13

4.4.1 Road vehicles ................................................................................................................................................. 13

4.4.2 Caravan holiday home ................................................................................................................................ 13

5 Gas cylinder housing ................................................................................................................................... 13

5.1 LPG Cylinder compartment ...................................................................................................................... 13

5.1.1 General ............................................................................................................................................................. 13

5.1.2 Requirements for the construction of cylinder compartments .................................................. 13

5.1.3 Ventilation for cylinder compartments ............................................................................................... 14

5.1.4 Electric equipment in cylinder compartments.................................................................................. 14

5.1.5 Distance from the engine exhaust .......................................................................................................... 15

5.1.6 Cylinder compartment part of garage or storage compartment ................................................ 16

5.1.7 Cylinder compartments with internal access .................................................................................... 17

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 pressure ........................................................................................................................................ 18

7.2 Pressure regulation systems .................................................................................................................... 18

7.2.1 General ............................................................................................................................................................. 18

7.2.2 Road vehicles ................................................................................................................................................. 20

7.2.3 Caravan holiday home ................................................................................................................................ 20

7.3 Marking of the working pressure ........................................................................................................... 20

7.4 Devices to protect against over-pressure ............................................................................................ 20

7.5 Connection of a dual cylinder system ................................................................................................... 20

7.6 Connection of an external LPG supply by means of a plug-in connector ................................. 20

8 Components ................................................................................................................................................... 22

8.1 Hose assemblies............................................................................................................................................ 22

8.2 Pipes .................................................................................................................................................................. 22

8.2.1 Road vehicles ................................................................................................................................................. 22

8.2.2 Caravan holiday homes .............................................................................................................................. 23

8.3 Pipe fittings .................................................................................................................................................... 23

---------------------- Page: 4 ----------------------
oSIST prEN 1949:2018
prEN 1949:2018 (E)

8.3.1 General ............................................................................................................................................................. 23

8.3.2 Road vehicles.................................................................................................................................................. 24

8.3.3 Caravan holiday homes .............................................................................................................................. 25

8.4 Jointing materials ......................................................................................................................................... 26

8.5 Shut-off valves ................................................................................................................................................ 26

8.6 Manual changeover valve .......................................................................................................................... 26

9 Installation design ........................................................................................................................................ 26

9.1 General ............................................................................................................................................................. 26

9.2 Protection against mechanical damage ................................................................................................ 26

9.3 Avoidance of corrosion ............................................................................................................................... 26

9.4 Pipe sizing ....................................................................................................................................................... 26

9.5 Pipe fittings ..................................................................................................................................................... 26

9.6 Positioning of LPG pipes near to other services ................................................................................ 27

9.7 Fixing ................................................................................................................................................................. 27

9.7.1 Road vehicles.................................................................................................................................................. 27

9.7.2 Caravan holiday homes .............................................................................................................................. 27

9.8 Shut-off valves ................................................................................................................................................ 27

9.9 Equipotential bonding of LPG pipes ....................................................................................................... 28

10 Connection of appliances to the LPG supply ....................................................................................... 29

10.1 General ............................................................................................................................................................. 29

10.2 Road vehicles.................................................................................................................................................. 29

10.3 Slide outs of road vehicles ......................................................................................................................... 30

10.3.1 General ............................................................................................................................................................. 30

10.3.2 Installation ...................................................................................................................................................... 30

10.4 Caravan holiday homes .............................................................................................................................. 30

11 LPG Appliances .............................................................................................................................................. 30

11.1 Suitability of LPG appliances .................................................................................................................... 30

11.2 Installations .................................................................................................................................................... 31

11.3 Space heaters ................................................................................................................................................. 31

11.3.1 Road vehicles.................................................................................................................................................. 31

11.3.2 Caravan holiday homes .............................................................................................................................. 31

11.4 Water heaters................................................................................................................................................. 31

11.4.1 Road vehicles.................................................................................................................................................. 31

11.4.2 Caravan holiday homes .............................................................................................................................. 31

11.5 Cooking appliances ...................................................................................................................................... 32

11.6 Refrigerators .................................................................................................................................................. 32

11.7 Gas lights .......................................................................................................................................................... 33

11.8 LPG fuel cells ................................................................................................................................................... 33

11.9 LPG power generators ................................................................................................................................ 33

12 Flueing .............................................................................................................................................................. 33

12.1 Flues .................................................................................................................................................................. 33

12.2 Flue terminals ................................................................................................................................................ 34

12.3 Weather protection ...................................................................................................................................... 35

12.4 Draught diverters ......................................................................................................................................... 35

12.5 Accessibility of flues .................................................................................................................................... 35

13 Installation of LPG tanks on road vehicles supplying LPG appliances ...................................... 35

13.1 Requirements regarding the LPG tank and accessories ................................................................. 35

13.1.1 General ............................................................................................................................................................. 35

13.1.2 Additional requirements regarding the LPG tank ............................................................................ 36

13.1.3 Additional requirements regarding accessories ............................................................................... 36

13.2 Installation of the LPG tank and system requirements .................................................................. 36

---------------------- Page: 5 ----------------------
oSIST prEN 1949:2018
prEN 1949:2018 (E)

14 User’s handbook ........................................................................................................................................... 37

Annex A (normative) National regulation concerning the maximum flow rate of pressure

regulating devices for caravan holiday homes .................................................................................. 39

Annex B (informative) National situations in the Member States ........................................................... 41

Annex C (informative) Manufacturer declaration ......................................................................................... 43

Bibliography ................................................................................................................................................................. 44

---------------------- Page: 6 ----------------------
oSIST prEN 1949:2018
prEN 1949:2018 (E)
European foreword

This document (prEN 1949:2018) has been prepared by Technical Committee CEN/TC 181 “Dedicated

liquefied petroleum gas appliances”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.

The following main technical changes have been made compared to EN 1949:2011+A1:2013:

a) definition for tank compartment has been added;
b) requirements for tank compartment have been added;

c) several clauses have been separated to clearly state the requirements for road vehicles and caravan

holiday homes
d) requirements for slide outs have been added;

e) requirements for electric installations inside gas compartments have been extended;

f) requirements for tanks and tank installations have been extended;

g) Annex A for national regulation concerning the maximum flow rate of pressure regulating devices

for caravan holiday homes has been added;
h) Annex B (old) has been deleted;
i) former Annex A became Annex B;
j) Annex C has been updated;
k) requirements for cylinder compartment with internal excess has been amended;
l) declaration of conformity is now mandatory;
m) calculation method for the leak test has been added.
---------------------- Page: 7 ----------------------
oSIST prEN 1949:2018
prEN 1949:2018 (E)
1 Scope

This European Standard 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;
— on design considerations;
— tightness testing of installations;
— the contents of the user's handbook.

This European Standard does not cover installations supplied from other than 3rd family gases (LPG),

water connections or electrical power supplies to the appliance(s). Portable appliances, incorporating

their own gas supply, are not considered part of the installation and are outside the scope of this standard.

It does not include the installation of LPG appliances to be used for commercial purposes or for boats. Gas

supply equipment and gas appliances separate from and external to the body of the vehicle are also not

considered by this standard.

This standard covers tanks which fulfil the requirements of the Pressure Equipment Directive

(2014/68/EU).
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, 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 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: Fittings with ends for capillary soldering

or capillary brazing to copper tubes

EN 1254-2, Copper and copper alloys - Plumbing fittings - Part 2: Fittings with compression ends for use

with copper tubes

EN 1254-4, Copper and copper alloys - Plumbing fittings - Part 4: Fittings combining other end connections

with capillary or compression ends
---------------------- Page: 8 ----------------------
oSIST prEN 1949:2018
prEN 1949:2018 (E)

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 12979:2002, Automotive LPG-systems — Installation requirements
EN 14291, Foam producing solutions for leak detection on gas installations

EN 15033, Room sealed storage water heaters for the production of sanitary hot water using LPG for

vehicles and boats

prEN 16436-2, 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

1127:1992)

EN ISO 8434-1, Metallic tube connections for fluid power and general use - Part 1: 24 degree cone

connectors (ISO 8434-1)

ISO 8434-2, Metallic tube connections for fluid power and general use — Part 2: 37 degree flared connectors

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:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
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 13878:2003, definition 3.21]
3.2
caravan

trailer leisure accommodation vehicle that meets requirements for construction and use of road vehicles

[SOURCE: EN 13878:2003, definition 3.5]
---------------------- Page: 9 ----------------------
oSIST prEN 1949:2018
prEN 1949:2018 (E)
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 13878:2003, definition 3.26]
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 13878:2003, 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
3.8
liquefied petroleum gas installation

installation usually consisting of fuel container(s), pressure regulator(s), piping, hose assemblies and

shut-off devices, providing liquefied petroleum gas 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 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
3.11
changeover device

device which maintains the gas supply continuity by using gas from a “cylinder”, a “tank” or an external

supply manually chosen by the user or automatically
[SOURCE: EN 16129:2013, definition 3.1.2]
---------------------- Page: 10 ----------------------
oSIST prEN 1949:2018
prEN 1949:2018 (E)
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

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 13878:2003, definition 3.23]
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

---------------------- Page: 11 ----------------------
oSIST prEN 1949:2018
prEN 1949:2018 (E)
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

3.2
...