General Information

Abstract

This European Standard defines the specifications and test methods for the construction, safety, rational use of energy and fitness for purpose, environment, classification and marking of room sealed storage water heaters for the production of sanitary hot water using LPG for:
   vehicles as defined in article 1 of Directive 70/156/EEC (see 3.12);
   caravan holiday homes;
   agricultural, forestry and mobile machinery, and
   boats;
hereafter called "appliance".
This standard applies to appliances:
   type C1, C3 and C5 (room sealed, see CEN/TR 1749) with combustion air intake and outlet for the products of combustion (combined or not) in the wall or roof;
   fitted with atmospheric burners;
   appliances fitted with or without a fan on the combustion circuit;
   using LPG at the pressure I3BP(30) indicated in EN 437, (for caravan holiday homes and boats see Annex A);
   of nominal heat input not exceeding 7 kW (Hi);
   appliances whether connected to the water mains pressure or on board water supply;
   appliances using, where appropriate, 12 V or 24 V DC electrical supply (or appliances with an additional 230 V heating element).
This standard does not contain all the necessary requirements for:
   appliances which fulfil a dual purpose role of space heating and heating water for sanitary hot water use.
This standard covers type testing only.
NOTE 1   Alternatively appliances (storage water heaters) for caravan holiday homes may comply with EN 89.
NOTE 2   For space heating aspects see EN 624 "Specification for dedicated LPG appliances - Room sealed LPG space heating equipment for installation in vehicles and boats".

Status
Published
Publication Date
07-Nov-2006
Withdrawal Date
30-May-2007
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
13-Oct-2020
Completion Date
23-Sep-2026
Directive
Not Harmonized2009/142/EC - Appliances burning gaseous fuels
OJ Ref: C, C 349 OJ Date: 22-Dec-2010

Buy Documents

Overview

EN 15033:2006 is a CEN European Standard that specifies type testing requirements for room-sealed storage water heaters using LPG (liquefied petroleum gas) intended for sanitary hot water in vehicles and boats. It covers construction, safety, energy performance, fitness for purpose, environment, classification and marking for appliances used in:

  • motor vehicles (per Directive 70/156/EEC),
  • caravan holiday homes,
  • agricultural/forestry/mobile machinery, and
  • boats.

This standard applies to type C1, C3 and C5 room-sealed appliances with atmospheric burners, with nominal heat input up to 7 kW, and electrical supplies such as 12 V or 24 V DC (and optionally a 230 V heating element). EN 15033:2006 deals only with type testing and excludes appliances that serve a dual role for space heating and water heating.

Key topics and technical requirements

EN 15033:2006 defines specifications and test methods covering:

  • Construction and materials - requirements for sealed combustion chambers, water vessels and gas circuits.
  • Control and safety devices - thermostats, flame supervision, safety shut-offs and manual controls.
  • Combustion and burner requirements - atmospheric burners, optional fans, and combustion air/flue arrangements for wall or roof terminations (combined or separate).
  • Gas and electrical supply characteristics - use of LPG at I3BP(30) pressure per EN 437 (with national variations for caravans and boats in Annex A).
  • Performance and operational tests - vibration resistance, soundness (leak tightness), nominal heat input, temperature control, ignition and flame stability, wind-resistance tests for terminals, fan supervision, and heating-up time.
  • Energy efficiency and standby consumption - test methods for rational use of energy.
  • Marking and instructions - mandatory marking, user and installation instructions, and applicable symbols for vehicles/boats.

Applications and users

EN 15033:2006 is essential for:

  • Manufacturers and designers of LPG room-sealed storage water heaters for vehicles, caravans and boats - to design compliant products.
  • Test laboratories and certification bodies - to perform required type tests and issue conformity assessments.
  • OEMs and vehicle/caravan/boat builders - for component selection and regulatory compliance.
  • Regulators and safety inspectors - to verify appliance safety, emissions and energy performance.
  • Fleet operators and installers - to ensure correct installation, operation and documentation.

Related standards

Relevant references and complementary standards include:

  • EN 437 (test gases and pressures)
  • EN 89 (alternative for caravan storage heaters)
  • EN 624 (room-sealed LPG space heating equipment)
  • EN 60335-2-21 (household storage water heater safety)
  • EN 298, EN 50165, EN ISO 10239 (installation and control requirements)

Use EN 15033:2006 when specifying, testing or validating LPG room-sealed water heaters for mobile and marine applications to ensure safety, durability and efficient hot-water production.

Relations

Effective Date
25-Aug-2026
Effective Date
25-Aug-2026
Effective Date
25-Aug-2026
Effective Date
25-Aug-2026
Effective Date
07-Jul-2026
Effective Date
09-Feb-2026
Effective Date
09-Feb-2026
Effective Date
09-Feb-2026
Effective Date
09-Feb-2026
Effective Date
09-Feb-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026

Buy Documents

Frequently Asked Questions

EN 15033:2006 is a standard published by the European Committee for Standardization (CEN). Its full title is "Room sealed storage water heaters for the production of sanitary hot water using LPG for vehicles and boats". This standard covers: This European Standard defines the specifications and test methods for the construction, safety, rational use of energy and fitness for purpose, environment, classification and marking of room sealed storage water heaters for the production of sanitary hot water using LPG for: vehicles as defined in article 1 of Directive 70/156/EEC (see 3.12); caravan holiday homes; agricultural, forestry and mobile machinery, and boats; hereafter called "appliance". This standard applies to appliances: type C1, C3 and C5 (room sealed, see CEN/TR 1749) with combustion air intake and outlet for the products of combustion (combined or not) in the wall or roof; fitted with atmospheric burners; appliances fitted with or without a fan on the combustion circuit; using LPG at the pressure I3BP(30) indicated in EN 437, (for caravan holiday homes and boats see Annex A); of nominal heat input not exceeding 7 kW (Hi); appliances whether connected to the water mains pressure or on board water supply; appliances using, where appropriate, 12 V or 24 V DC electrical supply (or appliances with an additional 230 V heating element). This standard does not contain all the necessary requirements for: appliances which fulfil a dual purpose role of space heating and heating water for sanitary hot water use. This standard covers type testing only. NOTE 1 Alternatively appliances (storage water heaters) for caravan holiday homes may comply with EN 89. NOTE 2 For space heating aspects see EN 624 "Specification for dedicated LPG appliances - Room sealed LPG space heating equipment for installation in vehicles and boats".

This European Standard defines the specifications and test methods for the construction, safety, rational use of energy and fitness for purpose, environment, classification and marking of room sealed storage water heaters for the production of sanitary hot water using LPG for: vehicles as defined in article 1 of Directive 70/156/EEC (see 3.12); caravan holiday homes; agricultural, forestry and mobile machinery, and boats; hereafter called "appliance". This standard applies to appliances: type C1, C3 and C5 (room sealed, see CEN/TR 1749) with combustion air intake and outlet for the products of combustion (combined or not) in the wall or roof; fitted with atmospheric burners; appliances fitted with or without a fan on the combustion circuit; using LPG at the pressure I3BP(30) indicated in EN 437, (for caravan holiday homes and boats see Annex A); of nominal heat input not exceeding 7 kW (Hi); appliances whether connected to the water mains pressure or on board water supply; appliances using, where appropriate, 12 V or 24 V DC electrical supply (or appliances with an additional 230 V heating element). This standard does not contain all the necessary requirements for: appliances which fulfil a dual purpose role of space heating and heating water for sanitary hot water use. This standard covers type testing only. NOTE 1 Alternatively appliances (storage water heaters) for caravan holiday homes may comply with EN 89. NOTE 2 For space heating aspects see EN 624 "Specification for dedicated LPG appliances - Room sealed LPG space heating equipment for installation in vehicles and boats".

EN 15033:2006 is classified under the following ICS (International Classification for Standards) categories: 97.100.20 - Gas heaters. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 15033:2006 has the following relationships with other standards: It is inter standard links to ISO 301:2006, ISO 7-1:1994, ISO 262:1998, ISO 1402:1994, EN IEC 60730-2-9:2026, EN IEC 60335-2-102:2024, EN IEC 60335-1:2023, EN 60335-2-21:2021, EN IEC 60730-2-9:2019, EN 60529:1991, EN 298:2003, EN 125:2022+A1:2024, EN ISO 3166-1:2020, EN 1949:2021, EN ISO 10239:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 15033:2006 is associated with the following European legislation: EU Directives/Regulations: 2009/142/EC, 90/396/EEC; Standardization Mandates: M/BC/CEN/89/6. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

EN 15033:2006 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Room sealed storage water heaters for the production of sanitary hot water using LPG for vehicles and boatsAppareils de production d'eau chaude par accumulation a circuit étanche pour usages sanitaires utilisant les combustibles GPL pour les véhicules et bateauxRaumluftunabhängige, flüssiggasbeheizte Vorrats-Wasserheizer für den sanitären Gebrauch für Fahrzeuge und BooteTa slovenski standard je istoveten z:EN 15033:2006SIST EN 15033:2007en,fr,de97.100.20ICS:SLOVENSKI
STANDARDSIST EN 15033:200701-februar-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15033November 2006ICS 97.100.20 English VersionRoom sealed storage water heaters for the production ofsanitary hot water using LPG for vehicles and boatsAppareils de production d'eau chaude par accumulation àcircuit étanche pour usages sanitaires utilisant lescombustibles GPL pour les véhicules et bateauxRaumluftunabhängige, flüssiggasbeheizte Vorrats-Wasserheizer für den sanitären Gebrauch für Fahrzeugeund BooteThis European Standard was approved by CEN on 18 September 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15033:2006: E

National situations in the member states.56 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 90/396/EEC.58 Bibliography.60
Figures Figure 1 — Apparatus for wall terminal wind test.40 Figure 2 — Apparatus for roof terminal wind test.41 Figure 3 — Symbols for use in vehicles and/or boats.52
Tables Table 1 — Test gases.26 Table 2 — Optional test pressures for caravan holiday homes and boats.27 Table 3 — Appliance performance at voltage limits.37 Table 4 — Wind speeds and directions for testing balanced wall flue outlets and air intakes.42 Table 5 — Wind speeds and directions for testing combined roof flue outlets and air Intakes.43 Table 6 — Wind speeds and directions for testing roof flue outlets with under floor air Intakes.43 Table 7 — Wind speeds and directions for testing wall flue outlets with under floor air intakes.44 Table A.1 — Normal working pressure for appliances in caravan holiday homes.56 Table A.2 — Normal working pressure for appliances in boats.57 Table ZA.1 – Correspondence between this European Standard and Directive 90/396/EEC.59

This standard covers type testing only.
NOTE 1 Alternatively appliances (storage water heaters) for caravan holiday homes may comply with EN 89. NOTE 2 For space heating aspects see EN 624 "Specification for dedicated LPG appliances - Room sealed LPG space heating equipment for installation in vehicles and boats".

3.2.2.1 reference gases test gases with which appliances operate in normal conditions, when they are supplied at the corresponding nominal pressure 3.2.2.2 limit gases test gases representative of the extreme variations of the characteristics of the gases for the use of which the appliance has been designed

net calorific value water produced by combustion is assumed to be in the vapour state Symbol: Hi. (kWh/kg) 3.2.4 limit pressures pressures representative of the extreme variations in the appliance supply conditions Symbols: maximum pressure: pmax (mbar) minimum pressure: pmin (mbar) 3.2.5 rated voltage voltage or range of voltages specified by the manufacturer at which the appliance will operate normally 3.3
gas circuit part of the appliance conveying or containing LPG 3.4 Control and safety devices 3.4.1 control knob component intended to be operated manually in order to control an appliance, for example: tap or temperature selector 3.4.2 manual shut-off valve valve that permits manual interruption of the gas rate to the burner and ignition burner (if any) 3.4.3 automatic shut-off valve valve designed to open when energized by an electrical current and which closes automatically in the absence of the electrical current 3.4.4 flame supervision device device that, in response to a signal from the flame detector, keeps the gas supply open and shuts it off in the absence of the supervised flame

3.5.11 prepurging operation consisting of introducing forced air into the combustion circuit in order to evacuate any remaining air/gas mixtures; this takes place between the start-up command and the activation of the ignition device 3.6 Burners and ignition devices 3.6.1 burner component that provides the air-gas mixture and ensures the combustion of the gas 3.6.2 main burner burner that is intended to assure the thermal function of the appliance by burning the main gas quantity 3.6.3 ignition device any means (flame, electrical ignition device or other device) used to ignite the gas admitted to the ignition burner or the main burner 3.6.3.1 manual ignition device device by means of which the burner is ignited following manual intervention 3.6.3.2 automatic ignition device automatic device which ignites the ignition burner or the main burner directly 3.6.4 ignition burner small burner intended to ignite a main burner 3.6.4.1 permanent ignition burner
ignition burner that is ignited before the main burner and extinguished when the appliance is shut down voluntarily or by the flame supervision device

the combustion products evacuation duct and the combustion air intake duct are neither concentric nor completely surrounded
3.7.5 terminal device to which the combustion air intake ducts and / or the combustion products evacuation ducts (flue) are connected and which is intended to maintain the quality of combustion in the event of wind 3.7.5.1 flue terminal part of the combustion circuit that is intended to be connected to the flue, evacuating the combustion products to the outside 3.7.6 wind protection device cover over the combustion circuit openings on the outside of the vehicle (e.g. deflector plates, covering hoods), which protect the circuit from unacceptable effects in the event of wind and maintains the quality of combustion
3.7.7 condensate liquid formed by the condensation of the combustion products water vapour

Unit: kilowatt (kW) 3.10.2.3 corrected heat input heat input that would be obtained if the appliance were supplied with dry reference gas at the normal supply pressure and a temperature of 15 °C, with an atmospheric pressure of 1 013,25 mbar (see 6.4.2) Symbol: Qc Unit: kilowatt (kW) 3.10.2.4 minimum heat input minimum value of heat input declared by the manufacturer Symbol: Qm Unit: kilowatt (kW) 3.10.2.5 heat output quantity of energy transmitted to the water divided by time Symbol: P Unit: kilowatt (kW)
...