National foreword

This British Standard is the official English language version of EN 12067‑2:2004.

The UK participation in its preparation was entrusted by Technical Committee GSE/22, Safety and control devices for gas burners and gas burning appliances, to Subcommittee GSE/22/19, Pneumatic air/gas ratio controls and governors, which has the responsibility to:

aid enquirers to understand the text;
present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed;
monitor related international and European developments and promulgate them in the UK.

A list of organizations represented on this subcommittee can be obtained on request to its committee manager.

Cross-references

The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard does not of itself confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 5 April 2004

This European Standard was approved by CEN on 2 February 2004.

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 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 translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Foreword

This document (EN 12067‑2:2004) has been prepared by Technical Committee CEN /TC 58, "Safety and control devices for gas-burners and gas-burning appliances", the secretariat of which is held by BSI.

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 September 2004, and conflicting national standards shall be withdrawn at the latest by September 2004.

This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.

This European Standard covers type testing only.

This standard recognizes the safety level specified by CEN/TC 58 dealing with the safety, construction and performance of controls for Gas Burners and Gas Burning Appliances and to their testing.

Annex A is informative. Annexes B and C are normative.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Introduction

For electronic gas/air ratio control systems (GARC) there are numerous solutions for specific applications in the market. For that reason TC 58 decided to draft a standard for type testing for closed loop electronic GARC only.

This standard does not override requirements of relevant appliance standards.

This standard does not differentiate into classification by heat input or relates to applications. When GARCs are fitted to appliances the safety of the appliance should not be reduced by any normal or abnormal operation of the GARC described in this standard.

The accuracy of actual gas/air ratio is not specified as a fixed value in this standard.

The standard specifies which parameters have to be declared by the manufacturer and under what conditions these have to be fulfilled. These parameters will relate to the GARC rather than the combustion process.

The standard does not include a standard test rig, however the purpose of the tests is to verify the manufacturer’s declaration under the conditions required in the standard.

1 Scope

This European Standard specifies the safety, construction and performance requirements for electronic gas/air ratio control systems (GARCs) intended for use with gas burners and gas burning appliances. It also describes the test procedures for evaluating these requirements and specifies information necessary for installation and use.

This standard is only applicable to closed loop gas/air ratio controls (see 3.1) and does not differentiate into classification by heat input.

This standard applies to electronic GARCs that can be tested independently, as well as part of an appliance or a gas burner.

2 Normative references

3 Terms and definitions

4 Classification

5 Units of measurement and test conditions

6 Construction requirements

6.1 General

6.2 Mechanical requirements

6.3 Electrical equipment

7 Functional requirements

7.1 General

7.2 Burner control interface

7.3 Safety shut-down initiated by the electronic GARC

7.4 Start-up sequence

7.5 Preset/predefined range

7.6 Restart from defined safe state

7.7 Accuracy requirements

7.8 Protection against internal faults

7.9 Information to be supplied by the manufacturer

7.10 Documentation

7.11 Assessment

8 Protection against environmental influences

8.1 General

8.2 Test conditions

8.3 Performance tests

8.4 Void

8.5 Endurance

8.6 EMC-requirements

9 Marking and installation

9.1 Marking

9.2 Installation and operating instructions

9.3 Warning note

BS EN 12067-2:2004

Gas/air ratio controls for gas burners and gas burning appliances - Electronic types

Published:

5 Apr 2004

Withdrawn:

24 Nov 2022