Gas-fired central heating boilers - Type B11 and B11BS boilers, fitted with atmospheric burners of nominal heat input not exceeding 70 kW

This amendment 6 will extend the field of application of EN 297 to boilers intended to be installed in the open air in a partially protected place.

Heizkessel für gasförmige Brennstoffe - Heizkessel der Arten B11 und B11BS mit atmosphärischen Brennern, mit einer Nennwärmebelastung kleiner als oder gleich 70 kW

Chaudieres de chauffage central utilisant les combustibles gazeux - Chaudieres des types B11 et B11BS équipées de bruleurs atmosphériques dont le débit calorifique nominal est inférieur ou égal a 70 kW

Plinski kotli za centralno ogrevanje - Tipa B11 in B11BS z atmosferskimi gorilniki z imensko močjo do vključno 70 kW - Dopolnilo A6

General Information

Status
Withdrawn
Publication Date
31-Dec-2003
Withdrawal Date
13-Aug-2014
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
14-Aug-2014
Due Date
06-Sep-2014
Completion Date
14-Aug-2014

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SLOVENSKI STANDARD
SIST EN 297:1997/A6:2004
01-januar-2004

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Gas-fired central heating boilers - Type B11 and B11BS boilers, fitted with atmospheric

burners of nominal heat input not exceeding 70 kW
Heizkessel für gasförmige Brennstoffe - Heizkessel der Arten B11 und B11BS mit

atmosphärischen Brennern, mit einer Nennwärmebelastung kleiner als oder gleich 70

Chaudieres de chauffage central utilisant les combustibles gazeux - Chaudieres des

types B11 et B11BS équipées de bruleurs atmosphériques dont le débit calorifique
nominal est inférieur ou égal a 70 kW
Ta slovenski standard je istoveten z: EN 297:1994/A6:2003
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.100.20 Plinski grelniki Gas heaters
SIST EN 297:1997/A6:2004 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 297:1997/A6:2004
---------------------- Page: 2 ----------------------
SIST EN 297:1997/A6:2004
EUROPEAN STANDARD
EN 297:1994/A6
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2003
ICS 91.140.10
English version
Gas-fired central heating boilers - Type B11 and B11BS boilers,
fitted with atmospheric burners of nominal heat input not
exceeding 70 kW

Chaudières de chauffage central utilisant les combustibles Heizkessel für gasförmige Brennstoffe - Heizkessel der

gazeux - Chaudières des types B11 et B11BS équipées de Arten B11 und B11BS mit atmosphärischen Brennern, mit

brûleurs atmosphériques dont le débit calorifique nominal einer Nennwärmebelastung kleiner als oder gleich 70 kW

est inférieur ou égal à 70 kW

This amendment A6 modifies the European Standard EN 297:1994; it was approved by CEN on 6 December 2002.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this

amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such

national standards may be obtained on application to the Management Centre or to any CEN member.

This amendment 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 Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 297:1994/A6:2003 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 297:1997/A6:2004
EN 297:1994/A6:2003 (E)
Foreword

This document (EN 297:1994/A6:2003) has been prepared by Technical Committee CEN/TC 109 "Central heating

boilers using gaseous fuels", the secretariat of which is held by NEN.

This Amendment to the European Standard EN 297:1994 shall be given the status of a national standard, either by

publication of an identical text or by endorsement, at the latest by September 2003, and conflicting national

standards shall be withdrawn at the latest by September 2003.

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).

This Amendment 6 will extend the scope of EN 297 to boilers intended to be installed in a partially protected place.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,

Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
---------------------- Page: 4 ----------------------
SIST EN 297:1997/A6:2004
EN 297:1994/A6:2003 (E)
1.1 Field of application
Add to the first list of indents
" — intended to be installed indoors and/or in a partially protected place"
1.3 Definitions
Add a new sub-clause including a note, as follows:
"1.3.3.3.27 Frost protection system
System that actively protects the water in the boiler against freezing.

NOTE An anti-freeze solution is not considered as an active frost protection system."

Add a new sub-clause, as follows:
"1.3.4.19 Boilers intended to be installed in a partially protected place

Boilers intended to be installed in the open air, not exposed to the direct action and infiltration of rain, snow or

hail."
Add a footnote to 1.3.4.19

" If a boiler is sold with a casing intended to provide protection, this casing is an integral part of the boiler."

Add a new sub-clause, as follows:

"1.3.4.20 Boilers intended to be installed indoors and/or in a partially protected place

Boilers intended to be installed:
— either only indoors;
— either only in a partially protected place;
— either indoors or in a partially protected place."
2.1.2.1 General
Add to the second paragraph, as follows:

" For boilers intended to be installed in a partially protected place, all materials employed in the construction,

including seals, gaskets and sealing pastes, if any, shall function properly in the environmental conditions

under which they are expected to operate.

The manufacturer shall declare in the technical instructions for the installer the minimum and maximum

ambient temperatures at which the boiler is designed to operate (see 5.2.1)."
---------------------- Page: 5 ----------------------
SIST EN 297:1997/A6:2004
EN 297:1994/A6:2003 (E)
2.1.10 Electrical equipment
Add at the end of Clause 2.1.10:
" For boilers intended to be installed in a partially protected place,

— the enclosure protection degree shall be at least IPX4D, in accordance with EN 60529;

— the electrical and/or electronic equipment shall be applied within its specified temperature range.”

2.2.10 Combustion products discharge safety device
Replace the first indent
" — either in the open air"
" — in the open air,
— or in a partially protected place,"
Add a new sub-clause, as follows:

" 2.2.11 Protection against frost for boilers intended to be installed in a partially protected

place

If the minimum ambient temperature declared by the manufacturer is less than 0 °C, a boiler intended to

operate in a partially protected place, shall be protected from freezing by a frost protection system."

Add a new footnote to 2.2.11 as follows:

" For combination boilers, the domestic hot water production circuit is also to be protected from damage

caused by frost."
3.4.2.2.1 Resistance to draught
Replace the existing text by:

" 3.4.2.2.1.1 Resistance to draught for boilers not intended to be installed in a partially

protected place
The flames shall be stable under the test conditions of 4.4.2.2.1.1.

3.4.2.2.1.2 Resistance to draught for boilers intended to be installed in a partially

protected place
The flames shall be stable under the test conditions of 4.4.2.2.1.2."
---------------------- Page: 6 ----------------------
SIST EN 297:1997/A6:2004
EN 297:1994/A6:2003 (E)
3.5.1 General
Add the following text:

" For boilers intended to be installed in a partially protected place, the devices shall operate correctly at the

temperatures to which they are subjected in the boiler, that is in operation at the maximum and minimum

ambient temperature declared by the manufacturer."
Add a new sub-clause, as follows:

" 3.13 Frost protection system for boilers intended to be installed in a partially protected

place

Under the test conditions of 4.13 the frost protection system, if any, shall act.

The temperature of the water shall remain above 0,5 °C at any point in the boiler during the test of 4.13."

Add a footnote with the following text after the wording "…. if any….":

" Boilers with minimum installation temperatures greater than 0 °C do not need a frost protection system."

Make at the end of 3.13 a
...

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