SIST EN 1949:2022

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

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.

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
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
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.
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
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
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
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
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
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)
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 LPG system shall be designed to withstand the dynamic loads during normal operation including
movement of the vehicle.
4.3 Tightness
4.3.1 Requirements
Each vehicle manufacturer's LPG system up to the user operated controls of the appliances (taps) shall
fulfil the following tightness requirements when tested at a test pressure of 150 mbar with air. A
detectable pressure loss of at most 5 mbar is permissible. If the volume of the LPG system is below
3 3
700 cm , a test volume shall be added so that the test volume is at least 700 cm .
4.3.2 Test
The test is carried out with air using the connection point for test equipment described in 7.2.1.1 and the
following procedure. In preparation for the test, the taps of the appliances shall be closed but the shut off
valves be left open. The LPG system is then pressurized to 150 mbar and closed. The measurement of the
pressure drop is carried out after a period of 5 minutes to allow for temperature and pressure
stabilization. If the pressure is not stable, additional time shall be necessary or other action needs to be
taken before the pressure is recorded. After another 5 minutes the remaining pressure is compared to
the first pressure.
During the test period the LPG pressure source should be turned off.
All parts of the LPG system operating at pressures above working pressure are tested with an appropriate
leak detection solution according to EN 14291 at operational pressure. No leakage shall be observed
within 30 s.
All parts, which are dismantled during the pressure test, shall be tested with an appropriate leak
detection solution according to EN 14291 at operational pressure after reassembling. No leakage shall be
observed within 30 s.
4.4 Second LPG system
4.4.1 Road vehicles
Only if an LPG power generator is installed and the total LPG consumption including the appliances
exceeds 1,5 kg/h it is allowed to install one additional LPG system.
For tightness test, see 4.3.
There shall be no connection between the both LPG systems.
The LPG containers for both LPG systems may be installed in the same compartment (see 5.1 and 6).
If there are two separate compartments, there shall be a warning sign inside both compartments, which
indicates that there is a second LPG system. Inside the compartment it shall be clearly indicated by a label
which appliances are supplied by each LPG system. Where the LPG tank(s) is/are not fitted within a
compartment, these labels shall be fitted visibly on the LPG tank(s).
If there is a second LPG system, a second manufacture's declaration of conformity is mandatory.
4.4.2 Caravan holiday home
A second LPG system is not allowed.
5 LPG cylinder housing
5.1 LPG Cylinder compartment
5.1.1 General
For road vehicles, LPG cylinders shall be installed in LPG cylinder compartments or LPG tank
compartments (see Clause 6), except when they are installed according to 5.2 or when they are used in
the conditions of 7.7.
For caravan holiday homes, cylinders are not required to be installed in cylinder compartments, but if a
cylinder compartment is used it shall fulfil the following appropriate requirements.
With the exception of 5.1.7, cylinder compartments shall be sealed against the accommodation space and
shall have external access only.
5.1.2 Requirements for the construction of cylinder compartments
5.1.2.1 General
The cylinder compartment shall be designed so that:
a) access to any connections, changeover devices and pressure regulation systems is not obstructed;
b) the replacement of LPG cylinders can be made without disturbing the installation or ancillary
equipment;
c) it is possible for any LPG cylinder securing device to be opened and closed without the use of tools;
d) it can accommodate LPG cylinder(s) of sufficient capacity to supply the total installed appliance
consumption.
A label shall be placed with a pictogram of a LPG cylinder and a sign “read instructions”, see Figure 2, in
the vicinity of the LPG cylinder(s).

Figure 2 — Sign “read instructions”
5.1.2.2 Road vehicles
In addition to 5.1.2.1 each LPG cylinder shall be secured rigidly in an upright position with the valve
uppermost to operate only in the gaseous phase and to prevent inadvertent movement when the vehicle
is in motion. In order to ensure the location of each LPG cylinder there shall be securing or fixing means,
one at high level and one at low level.
A pull-out tray for the placement of the LPG cylinder(s) is permitted inside the LPG cylinder compartment
to facilitate the exchange of LPG cylinders.
5.1.2.3 Caravan holiday homes
In addition to 5.1.2.1 each LPG cylinder shall be in an upright position with the valve uppermost to
operate only in the gaseous phase.
5.1.3 Ventilation for LPG cylinder compartments
Permanent ventilation of any LPG 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 mm . 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 mm at each level.
It shall not be possible for any part of the ventilation area to be obstructed by a LPG cylinder.
NOTE Low level means in the floor, or if in the side wall touching the floor. The longer dimension of the
ventilation is on the floor level
5.1.4 Electric equipment in LPG cylinder compartments
No electrical equipment, including wiring systems, shall be installed in any LPG cylinder compartment,
except:
a) ELV (extra low voltage) equipment for gas supply control;
b) other electric equipment which is proofed for at least category II 3 G Ex IIA T2 (see Directive
2014/34/EU, Annex II, B);
c) cables running through a LPG cylinder compartment without connection.
Such electrical installations and components shall be constructed and installed so that they are not a
potential source of ignition.
Where cables have to run through such a compartment such cables shall be protected against mechanical
damage by installation within conduit or duct passing through the compartment.
Where installed in a position where it is likely to be subject to mechanical damage, this conduit or duct
shall be able to withstand an impact equivalent to AG3.
5.1.5 Distance from the engine exhaust
Any LPG cylinder placement shall provide a minimum distance from the engine exhaust system as shown
in Figure 3.
a) Top view
b) Side view
Key
1 example of allowed position of the exhaust
2 LPG cylinder compartment
3 LPG cylinders
4 outside the vehicle
R = D = D ≥ 250 mm
D ≥ 300 mm
The shaded areas represent the volume where no part of exhaust system shall be located without
installation of the protection shield.
Figure 3 — Minimum distance from the engine exhaust system
Alternatively, thermal shielding shall be installed to prevent entry of exhaust heat gases into the
compartment, or projection of the exhaust heat flow towards the LPG cylinder(s) (see Figure 4).
Key
1 exhaust
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 4 — 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 5.1.3.
NOTE In Figure 4, the area of low-level ventilation is based on 10 000 mm .
5.1.6 LPG Cylinder compartment part of garage or storage compartment
Even in case the cylinder compartment is part of the garage or the storage compartment, it shall be
accessible from the outside of the vehicle.
The access from the garage/storage compartment to the LPG cylinder compartment is only provided via
an attached sealed door. The height of the bottom edge of the door opening is at least 50 mm, measured
from the bottom of the LPG cylinder compartment.
The door of the LPG cylinder compartment shall be positioned directly (not more than 50 mm) behind
the outside door of the garage / storage compartment. It shall be constructively ensured that the door
cannot be opened to the inside of the vehicle and cannot be blocked at any time.
The door shall be secured in its closed position. The outside door of the garage / storage compartment
may be the door of the LPG cylinder compartment too.
The requirements of 5.1.3, 5.1.4 and 5.1.5 shall be fulfilled.
5.1.7 LPG Cylinder compartments with internal access
For road 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 access from the habitable area to the LPG cylinder compartment is only provided via an attached
sealed door or hatch. The height of the bottom edge of the door opening is at least 50 mm, measured
from the bottom of the LPG cylinder compartment.;
b) the door or hatch of the compartment shall be readily accessible;
c) the requirements of 5.1.4 and 5.1.5 shall be fulfilled;
d) the compartment can contain a maximum of two cylinders, each having a capacity of not more than
11 kg. The requirements of 5.1.3 shall be fulfilled;
e) the compartment can contain a maximum of two cylinders with a maximum combined capacity of
7 kg. The fixed ventilation for LPG cylinder compartments may be reduced via one vent provided the
following conditions are complied with:
1) the vent shall have a minimum internal diameter of 20 mm;
2) 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;
3) the duct shall be positioned at low level in the floor and be resistant to LPG;
4) the duct shall fall throughout its entire length to the outside of the vehicle.
5.2 External access without cylinder compartment
For vehicles of category N (see Regulation (EU) 2018/858), support shall be provided to secure cylinders
outside the vehicle, but within the body contour unless a compartment complying with 5.1.7 is provided.
The requirements of 5.1.2.1 and 5.1.2.2 also apply.
6 LPG tank compartment
6.1 General
LPG tank compartments shall be sealed against the accommodation space and shall have external access
only.
The LPG tank compartment shall be designed so that access to any connections, changeover devices and
pressure regulation systems is not obstructed.
The LPG tank compartment shall be designed so that each LPG tank can be installed in accordance to
Clause 13.
A label shall be placed with a sign “read instructions”, see Figure 5, in the vicinity of the LPG tank(s).
Figure 5 — Sign “read instructions”
6.2 Ventilation for LPG tank compartments
The requirements of 5.1.3 shall be fulfilled.
6.3 Electric equipment in LPG tank compartments
The requirements of 5.1.4 shall be fulfilled.
6.4 Distance from the engine exhaust
The requirements of 5.1.5 shall be fulfilled.
7 Pressure regulation systems and working pressures
7.1 Working pressures
Road vehicles shall have a fixed working pressure of 30 mbar.
Caravan holiday homes shall have a fixed working pressure as specified in Annex B.
7.2 Pressure regulation systems
7.2.1 General
7.2.1.1 Where a LPG cylinder compartment is provided, the pressure regulation system shall be
inside the compartment; for LPG tank pressure regulation systems see 13.2.
A suitable connection point for test equipment (test point) shall be provided to verify the tightness of the
LPG system from the outlet of the regulator to the inlet of the appliances. The connection point for test
equipment may be a part of the regulator or in every case as close as possible to the regulator.
7.2.1.2 The pressure regulation system shall be designed either to be fitted:
a) directly fitted to the LPG cylinder valve, see Figure 6;
Key
1 LPG cylinder
2 regulator
3 +50
hose assembly class 2 (EN 16436-2:2018) with a maximum length of 400 mm
( )
−100
4 pipework
Figure 6 — LPG Cylinder mounted regulator
b) remotely fitted from the LPG cylinder valve at the wall of the LPG cylinder compartment, see Figure 7
and Figure 8;
Key
1 LPG cylinder
+50
hose assembly class 3 (EN 16436-2:2018) with a maximum length of 400 mm
( )
−100
3 wall mounted regulator with integrated test point
4 optional: separate test point
5 pipework
Figure 7 — Wall mounted regulator - single LPG cylinder
Key
1 LPG cylinder
+50
hose assembly class 3 (EN 16436-2:2018) with a maximum length of 400 mm
( )
−100
3 change over device with integrated test point
4 optional: separate test point
5 pipework
Figure 8 — Wall mounted pressure regulation system - two LPG cylinders
c) remotely fitted from the LPG cylinder valve on a pull-out tray + pipe work on the pull-out tray, see
Figure 9;
Key
1 LPG cylinder
+50
(high-pressure hose) hose assembly class 3 (EN 16436-2:2018) with a maximum length of mm
( )
−100
3 for single LPG cylinder regulator with integrated test point or for two LPG cylinders change over device with
integrated test point
4 optional: separate test point
5 pipework
6 (low-pressure hose) hose assembly class 2 (EN 16436-2:2018) with a maximum length of 750 mm
7 pipework
8 pull-out tray
9 LPG cylinder compartment
Figure 9 — On a pull-out tray mounted pressure regulation system (with pipework on the pull-
out tray)
d) directly fitted to the LPG cylinder valve on a pull-out tray, see Figure 10;
Key
1 LPG cylinder
2 regulator
3 hose assembly class 2 (EN 16436-2:2018) with a maximum length of 750 mm
4 pipework
5 pull-out tray
6 LPG cylinder compa
...