About CEN
The European Committee for Standardization is one of three European Standardization Organizations (together with CENELEC and ETSI) that have been officially recognized by the European Union and by the European Free Trade Association (EFTA) as being responsible for developing and defining voluntary standards at European level.
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Project
| Reference | EN 297:1994 |
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| Title | Gas-fired central heating boilers - Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW |
| Work Item Number | 00109001 |
| Abstract/Scope | This European Standard specifies the requirements and test methods for the construction, safety, fitness for purpose, rational use of energy, classification and marking of gas-fired central heating boilers, hereafter referred to as 'boilers'. This standard applies to type B11 and BB11BS boilers: - fitted with atmospheric burners; - that use gases corresponding to the three gas families and to the pressures stated in 4.1.4; - that have a nominal heat input not exceeding 70 kW (on net calorific value); - where the temperature of the water does not exceed 95 øC during normal operation; - where the maximum water-side operating pressure does not exceed 6 bar. This standard does not contain all the necessary requirements for: boilers: - intended to be installed in the open; - having multiple heating units with a single draught diverter; - with fan-assisted combustion; - of the condensing type; i- ntended to be connected to a common flue having mechanical extraction; - fitted with manual or automatic means of adjusting the air supply and/or adjusting the evacuation of the combustion products; - of the combination type (central heating and domestic hot water production); appliances: - combining the functions of an independent space heater and a hot water generator for central heating. This standard only covers type testing. |
| Status |
Withdrawn
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| Reference Document | |
| date of Availability (DAV) | 1994-05-24 |
| ICS | 91.140.10 - Central heating systems |
| A-Deviation(s) | CH |
| Special National Condition(s) |
Legal
| Directive(s) | 2009/142/EC, 90/396/EEC |
|---|---|
| Mandate(s) | M/BC/CEN/89/6 |
| Citation in OJEU | C 349 (2010-12-22) for Directive 2009/142/EC, C 142 (2005-06-11) for Directive 90/396/EEC |
Implementation Dates
| date of Ratification (DOR) (1) | 1994-05-18 |
|---|---|
| date of Availability (DAV) (2) | 1994-05-24 |
| date of Announcement (DOA) (3) | 1994-08-31 |
| date of Publication (DOP) (4) | 1994-11-30 |
| date of Withdrawal (DOW) (5) | 1994-11-30 |
Relations
| Supersedes | |
|---|---|
| Superseded by | EN 15502-2-2:2014 |
(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
In the case of undated standard, a link to the last dated version is provided.
In the case of series, a link to each standard identified in the series is provided.
We also invite you to check (via the website) whether corrigenda and/or amendments shall be read in conjunction with the main standard.