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  Brief Introduction of  
  Directive 88/378/EEC  
  Efficiency Requirements for Hot-water Boilers  
fired with liquid or gaseous fuels

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COUNCIL DIRECTIVE 92/42/EEC of 21 May 1992 on
efficiency requirements for new hot-water boilers fired with liquid or gaseous fuels

This directive has been amended by the following Council Directives:
1. 92/59/EEC of 29 June 1992 (General Product Safety);
2. 93/68/EEC of 22 July 1993 (CE Marking directive).

* The term 'EC Mark' or 'CE Mark' appeared in this directive is out of date and has been officially replaced by term 'CE Marking' in 1993 in the CE Marking directive 93/68/EEC.

Article 1
This Directive, which comes under the SAVE programme concerning the promotion of energy efficiency in the Community, determines the efficiency requirements applicable to new hot-water boilers fired by liquid or gaseous fuels with a rated output of no less than 4 kW and no more than 400 kW, hereinafter called 'boilers'.

Article 2
For the purposes of this Directive:
- boiler: the combined boiler body-burner unit, designed to transmit to water the heat released from burning,
- appliance:
- the boiler body designed to have a burner fitted,
- the burner designed to be fitted to a boiler body,
- effective rated output (expressed in kW): the maximum calorific output laid down and guaranteed by the manufacturer as being deliverable during continuous operation while complying with the useful efficiency indicated by the manufacturer,
- useful efficiency (expressed in %): the ratio between the heat output transmitted to the boiler water and the product of the net calorific value at constant fuel pressure and the consumption expressed as a quantity of fuel per unit time,
- part load (expressed in %): the ratio between the effective output of a boiler operating intermittently or at an output lower than the effective rated output and the same effective rated output;
- average temperature of the boiler water: the average of the water temperatures at the entry and exit of the boiler,
- standard boiler: a boiler for which the average water temperature can be restricted by design,
- back-boiler: a boiler designed to supply a central-heating system and to be installed in a fireplace recess as part of a back boiler/gas fire combination,
- low-temperature boiler: a boiler which can work continuously with a water supply temperature of 35 to 40o C, possibly producing condensation in certain circumstances, including condensing boilers using liquid fuel,
- gas condensing boiler: a boiler designed to condense permanently a large part of the water vapour contained in the combustion gases,
- boiler to be installed in the living space: a boiler with an effective rated output of less than 37 kW, designed to provide heat to the part of the living space in which it is installed by means of the emission of heat from the casing having an open expansion chamber, supplying hot water using gravity circulation; such boilers shall bear on their casings the explicit indication that they must be installed in living space.

Article 3
1. The following shall be excluded from this Directive:
- hot-water boilers capable of being fired by different fuels including solid fuels,
- equipment for the instantaneous preparation of hot water,
- boilers designed to be fired by fuels the properties of which differ appreciably from the properties of the liquid and gaseous fuels commonly marketed (industrial waste gas, biogas, etc),
- cookers and appliances designed mainly to heat the premises in which they are installed and, as a subsidiary function, to supply hot water for central heating and sanitary hot water,
- appliances with rated outputs of less than 6 kW using gravity circulation and designed solely for the production of stored sanitary hot water,
- boilers manufactured on a one-off basis.
2. In the case of boilers with a dual function, that of heating premises and also providing sanitary hot water, the efficiency requirements referred to in Article 5 (1) concern the heating function only.

Article 4

Article 5

Article 6

Article 7

Article 8

Article 9
1. By 1 January 1993, Member States shall adopt and publish the provisions necessary to comply with this Directive. They shall forthwith inform the Commission thereof.
They shall apply those provisions form 1 January 1994.
When Member States adopt those provisions, they shall contain a reference to this Directive or shall be accompanied by such a reference on the occasion of their official publication. The methods of making such a reference shall be laid down by the Member States.
2. Until 31 December 1997, Member States shall permit the placing on the market and putting into service of appliances complying with the national rules and schemes in force within their territories on the date of the adoption of this Directive.

Article 10

Article 11


1. Conformity mark
2. Additional specific markings


Module B: EC type-examination

Module C: Conformity to type


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Please click the following links to learn more about every CE-Marking-related European Union Directive, Guidelines to Directives, Frameworks of implementation of Directives, and Agreements on Mutual Recognition of conformity assessment between European Union and other countries such as USA, Japan, Canada, Australia, New Zealand and Israel:-

  1. What is CE marking (CE mark)?
  2. The CE marking logo (Free download CE mark logo)
  3. Download of the EC Rep symbol/logo
  4. CE Marking (CE mark) EU/EC Declaration of Conformity: definition and required content
  5. What is a manufacturer? What are the responsibilities of a manufacturer?
  6. Is the Own Brand Labeller or Private Labeller considered as the legal Manufacturer?
  7. Why is CE marking called "European passport"?
  8. Does my product need CE Marking in order to be sold/exported on/to the European Market?
  9. How to obtain CE Marking for my product?
  10. How can Wellkang Tech Consulting help me to obtain CE Marking for my product?
  11. Wellkang can be your Authorized Representative in Europe for CE Marking purpose !
  12. Complete list of all CE Marking Directives and Guidelines to Directives
  13. Complete list of all (more than 1000) Notified Bodies for CE marking
  14. Complete list of all European and/or international standards related to CE marking
  15. 85/374/eec: Directive of Liability for Defective Products (for all products)
  16. 1999/34/ec: Directive of Liability for Defective Products (amending) (for all products)
  17. 2000: (Proposal for a new) General Products Safety Directive (for all products)
  18. 92/59/eec: Directive of General Products Safety (for all products)
  19. 93/68/eec: "CE Marking" Directive (for all products)
  20. 93/465/eec: Conformity Assessment Procedures & CE Marking Rules, & Annex (for all products)
  21. Guide to Implementation of directives based on new approach & global approach (for all products)
  22. 73/23/eec: Directive of Low Voltage Electrical Equipment
  23. Guideline to Low Voltage Directive (LVD) 73/23/eec & Annex I, II
  24. 2000&2001 Framework of implementation of (LVD) Directive 73/23/eec
  25. 87/404/eec: Directive of Simple Pressure Vessels
  26. 88/378/eec: Directive of Toys & Annex I, II, ... IV
  27. 89/106/eec: Directive of Construction Products
  28. 89/336/eec: Directive of Electromagnetic Compatibility (EMC)
  29. Guideline to Directive of Electromagnetic Compatibility (EMC) 89/336/eec
  30. Communication 2000 in framework of implementation of EMC Directive 89/336/EEC
  31. 89/686/eec: Directive of Personal Protective Equipment (PPE)
  32. 90/384/eec: Directive of Non-automatic Weighing Instruments
  33. 90/396/eec: Directive of Appliances Burning Gaseous Fuels (AppliGas)
  34. 2001 Commission Communication in Framework of Impl (AppliGas) Directive 90/396/eec
  35. 92/42/eec: Directive of Efficiency of (Liquid or Gaseous fueled) Hot Water Boilers
  36. 93/15/eec: Directive of Explosives for Civil Uses
  37. 93/42/eec: Directive of Medical Devices
  38. 2001 Guidelines for Classification of Medical Devices
  39. Guidelines relating to the demarcation between Directives 90/385/eec, 93/42/eec and 65/65/eec.
  40. 90/385/eec: Directive of Active Implantable Medical Devices
  41. 98/79/ec: Directive of In Vitro Diagnostic Medical Devices
  42. Guidelines to Medical Devices Vigilance System
  43. List of Harmonised (European) Standards for Medical Devices
  44. List of Notified Bodies for Medical Devices Directive
  45. 93/65/eec: Directive of Air Traffic Management Equipment & Systems
  46. 94/9/ec: Directive of Equipment used in Potentially Explosive Atmospheres (Atex)
  47. Guidelines to directive 94/9/ec (Atex)
  48. 94/25/ec: Directive of Recreational Craft
  49. 95/16/ec: Directive of Lifts
  50. 96/48/ec: Directive of Trans-European High-speed Rail System
  51. 96/57/ec: Directive of Energy Efficiency: Household Refrigerators & Freezers
  52. 96/98/ec: Directive of Marine Equipment
  53. 98/37/ec: Directive of Machinery
  54. 2000: Comments on Directive of Machinery 98/37/ec
  55. 99/5/ec: Directive of Radio Equipment & Telecommunications Terminal Equipment (R&TTE)
  56. 2000/9/ec: Directive of Cableway Installations to Carry Persons
  57. 2000/14/ec: Directive of Noise Emission in the environment by equipment for use outdoors

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