Gas-fired instantaneous water heaters for the production of domestic hot water, fitted with atmospheric burners

2nd paragraph - 1st indent, add: "B11, B11BS, B12, B12BS, B13, B13BS, B14, B22, B23, B32, B33, B44, B52 and B53".
2nd paragraph - 1st indent, add the following footnote
"National installation regulations may specify further requirements and may limit the modes of installation permitted in the territory of a CEN member state."
2nd paragraph - 3rd indent, delete: "hereafter referred to as "type C water heaters with fan".
4th paragraph, add the following indent:
   "- type B21, B31, B41, B42, B43 and B51 water heaters."
After the 4th paragraph, add: "This standard only covers water heaters where the fan, if any, is an integral part of the appliance".

Gasbeheizte Durchlauf-Wasserheizer für den sanitären Gebrauch mit atmosphärischen Brennern

Im zweiten Abschnitt ist beim ersten Spiegelstrich hinzuzufügen: B12, B12BS, B13, B13BS, B14, B22 B23 B32, B33, B44, B52 und B53"
im zweiten Abschnitt, erster Spiegelstrich, ist die folgende Anmerkung hinzuzufügen: ANMERKUNG Nationale Installationsvorschriften können weitere Anforderungen vorschreiben und können die in dem Gebiet eines CEN-Mitgliedsstaates erlaubten Installationsarten einschränken."
Im zweiten Abschnitt, dritter Spiegelstrich, ist zu streichen: nachfolgend als Wasserheizer der Art C mit einem Gebläse genannt".
Im 4. Abschnitt ist der folgende Spiegelstrich hinzuzufügen:
   -    Wasserheizer der Arten B21, B31,B41, B42, B43 und B51"
Nach dem 4. Abschnitt ist hinzuzufügen: Diese Norm behandelt nur Wasserheizer, bei denen, falls vorhanden, das Gebläse ein integraler Bestandteil des Gerätes ist."

Appareils de production instantanée d'eau chaude pour usages sanitaires, équipés de bruleurs atmosphériques, utilisant les combustibles gazeux

2eme alinéa - 1er tiret, ajouter : « B11, B11BS, B12, B12BS, B13, B13BS, B14 , B22, B23, B32, B33, B44, B52 et B53 ».
2eme alinéa - 1er tiret, ajouter la note de bas de page suivante :
« Des réglementations d'installation nationales peuvent spécifier des exigences supplémentaires et peuvent limiter les modes d'installation autorisés sur le territoire d'un état membre du CEN. »
2eme alinéa - 3eme tiret, supprimer : « appelés ci-apres chauffe-eau de type C avec ventilateur ».
4eme alinéa, ajouter le tiret suivant :
   « -   les chauffe-eau des types B21 ,B31, B41, B42, B43 et B51. »
Ajouter apres le 4eme alinéa :« La présente norme couvre uniquement les chauffe-eau dont le ventilateur, s'il existe,  est une partie intégrante de l'appareil. »

Pretočni plinski grelniki z atmosferskim gorilnikom za pripravo sanitarne tople vode – Dopolnilo A2

General Information

Status
Withdrawn
Publication Date
30-Nov-2004
Withdrawal Date
24-May-2015
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
22-May-2015
Due Date
14-Jun-2015
Completion Date
25-May-2015

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SLOVENSKI STANDARD
SIST EN 26:2004/A2:2004
01-december-2004
3UHWRþQLSOLQVNLJUHOQLNL]DWPRVIHUVNLPJRULOQLNRP]DSULSUDYRVDQLWDUQHWRSOH
YRGH±'RSROQLOR$

Gas-fired instantaneous water heaters for the production of domestic hot water, fitted

with atmospheric burners

Gasbeheizte Durchlauf-Wasserheizer für den sanitären Gebrauch mit atmosphärischen

Brennern

Appareils de production instantanée d'eau chaude pour usages sanitaires, équipés de

bruleurs atmosphériques, utilisant les combustibles gazeux
Ta slovenski standard je istoveten z: EN 26:1997/A2:2004
ICS:
91.140.65 Oprema za ogrevanje vode Water heating equipment
SIST EN 26:2004/A2:2004 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 26:2004/A2:2004
---------------------- Page: 2 ----------------------
SIST EN 26:2004/A2:2004
EUROPEAN STANDARD
EN 26:1997/A2
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2004
ICS 91.140.65
English version
Gas-fired instantaneous water heaters for the production of
domestic hot water, fitted with atmospheric burners

Appareils de production instantanée d'eau chaude pour Gasbeheizte Durchlauf-Wasserheizer für den sanitären

usages sanitaires équipés de brûleurs atmosphériques Gebrauch mit atmosphärischen Brennern

utilisant les combustibles gazeux

This amendment A2 modifies the European Standard EN 26:1997; it was approved by CEN on 8 April 2004.

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

© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 26:1997/A2:2004: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 26:2004/A2:2004
EN 26:1997/A2:2004 (E)
Contents page

Foreword.................................................................................................................................................................3

1 Scope .........................................................................................................................................................4

2 Normative references ...............................................................................................................................4

3.7 combustion circuit....................................................................................................................................4

3.7.5 terminal ......................................................................................................................................................4

4.3 mode of supply of the combustion air and evacuation of the combustion products

(appliance type).........................................................................................................................................4

4.3.2 Type B ........................................................................................................................................................4

5.1 Appliance marking....................................................................................................................................5

5.1.4 Warnings on the appliance and the packaging .............................................................................5

5.2 Instructions ...............................................................................................................................................6

5.2.1 Technical instructions..............................................................................................................................6

6.1.7 Supply of combustion air and evacuation of the combustion products ............................................6

6.2.10 Combustion products discharge safety device.....................................................................................7

7.2.1 Soundness of the gas circuit...................................................................................................................7

7.7.2 Supplementary tests for appliances of types AAS and B11 and B11BS ............................................9

7.7.5 Supplementary tests for appliances of types C12 C13 C32 and C33 ................................................10

7.7.12 Air proving device for type C water heaters with fan..........................................................................10

7.7.16 Supplementary tests for type B , B and B water heaters................................................................10

14 2 3

7.9 Combustion .............................................................................................................................................11

7.9.1 Requirements ..........................................................................................................................................11

Annex A (informative)..........................................................................................................................................12

Annex B (normative)............................................................................................................................................13

Annex N (informative) Schematic representation of the classification of type B water heaters................14

Annex ZA ..............................................................................................................................................................19

---------------------- Page: 4 ----------------------
SIST EN 26:2004/A2:2004
EN 26:1997/A2:2004 (E)
Foreword

This document (EN 26:1997/A2:2004) has been prepared by Technical Committee CEN/TC 48 “Domestic gas-

fired water heaters”, the secretariat of which is held by AFNOR.

This Amendment to the European Standard EN 26:1997 shall be given the status of a national standard, either

by publication of an identical text or by endorsement, at the latest by December 2004, and conflicting national

standards shall be withdrawn at the latest by December 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.

With this amendment, the requirements and test methods for type B instantaneous water heaters with fan

assisted combustion are introduced in EN 26. In addition requirements and test procedures for resistance to

freezing are introduced.

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.
---------------------- Page: 5 ----------------------
SIST EN 26:2004/A2:2004
EN 26:1997/A2:2004 (E)
1 Scope
nd st
2 paragraph – 1 dash, add : "B , B , B , B , B , B , B , B , B , B , B and B "
12 12BS 13 13BS 14 22 23 32 33 44 52 53
nd st
2 paragraph – 1 dash, add the following footnote :

"National installation regulations may specify further requirements and may limit the modes of

installation permitted in the territory of a CEN member state.”
nd rd

2 paragraph – 3 dash, delete : "hereafter referred to as type C water heaters with a fan".

4 paragraph, add the following indent :
 "water heaters of types B , B , B , B , B and B ;"
21 31 41 42 43 51
Add after the 4 paragraph :

“This standard only covers water heaters where the fan, if any, is an integral part of the appliance.”

2 Normative references
Add the following reference :

"CR 1749 : 2001 European scheme for the classification of gas appliances according to the

method of evacuation of the products of combustion (Types)."
3.7 combustion circuit
Replace the last dash with the following :

 "the combustion products evacuation ducts and either the duct adapter (if any) or the connection

to the terminal for type C, B and B water heaters."
4 5
3.7.5 terminal

Add after the 3 indent : " – the combustion products evacuation duct for types B and B water

4 5
heaters."
4.3 mode of supply of the combustion air and evacuation of the combustion
products (appliance type)
4.3.2 Type B
Add after the first paragraph the following text:

"Type B water heaters are classified into several types according to the mode of evacuation of the

combustion products.
The types are defined by two subscripts:

a) The first subscript number is based upon the possible installation of the water heater with respect

to the mode of air supply and evacuation of the combustion products.

b) The second subscript number is based upon the presence and position of an integral fan in the

water heater, as shown below :
---------------------- Page: 6 ----------------------
SIST EN 26:2004/A2:2004
EN 26:1997/A2:2004 (E)

A type B water heater intended to operate with a pressurised flue duct shall be identified by an extra

subscript “P”. This subscript “P” is only used when installation in accordance with the water heater

manufacturer’s instructions on a flue specified by the water heater manufacturer results in the flue

2a)
operating at a positive pressure .”
Add at the end of the last paragraph of subclause 4.3.2 a new footnote 2a):
2a)

“ This identification “P” is in accordance with the designation of the classes of tightness in positive

pressure, agreed by CEN/TC 166: "Chimneys", depending on the pressure of operation of the duct

(e.g. see EN 1443)”.
Add the following new subclauses :
"4.3.2.2 type B
A type B water heater without a draught diverter.
4.3.2.3 type B

A type B water heater without a draught diverter, which is designed for connection to a common duct

system. This common duct system consists of a single natural draught flue. All pressurised parts of

the water heater containing products of combustion are completely enclosed by parts of the water

heater supplying combustion air. Combustion air is drawn into the water heater from the room by

means of a concentric duct, which encloses the flue. The air enters through defined orifices situated in

the surface of the duct.
4.3.2.4 type B

A type B water heater incorporating a draught diverter, that is designed for connection via its flue duct

to its flue terminal.
4.3.2.5 type B

A type B water heater without a draught diverter, that is designed for connection via its flue duct to its

flue terminal.
4.3.2.6 presence and position of a fan

 A type B water heater that does not incorporate a fan is identified by the second subscript number

"1" (e.g. B ).

 A type B water heater that incorporates a fan downstream of the combustion chamber/ heat

exchanger and upstream of the draught diverter, is identified by the second subscript number "2"

(e.g. B ).

 A type B water heater that incorporates a fan upstream of the combustion chamber/ heat

exchanger is identified by the second subscript number "3" (e.g. B ).

 A type B water heater that incorporates a fan downstream of both the combustion chamber/ heat

exchanger and the draught diverter is identified by the second subscript number "4" (e.g. B ).”

5.1 Appliance marking
5.1.4 Warnings on the appliance and the packaging
5.1.4.3 For type B appliances
Replace the title by: “For type B B and B appliances”.
11 12 13
---------------------- Page: 7 ----------------------
SIST EN 26:2004/A2:2004
EN 26:1997/A2:2004 (E)
5.1.4.4 For type A and type B appliances
AS 11BS
Replace the title by: “For type A , B B and B appliances”.
AS 11BS 12BS 13BS
5.2 Instructions
5.2.1 Technical instructions
Change in 5.2.1.4 and 5.2.2.3 “B ” to “B , B , B ”.
11BS 11BS 12BS 13BS
Add the following subclause:
f) for type B appliances

 the diameter(s) of the flues which can be used, in accordance with Table A.9, possibly with an

adapter;

 for flue calculations, information on the mass rate of combustion products in g/s and the average

temperature measured under the conditions of 8.2.2.
g) for types B and B appliances
4 5

 information about the type of installation for which the water heater is approved;

 give the instruction that the water heater has to be installed with the necessary accessories (e.g.

ducts, terminal, fitting piece) supplied with the water heater or give the specification of the

necessary accessories that shall be fitted;

 give the instruction for the installation of parts intended to be fitted to the water heater;

 indicate the maximum number of bends to be used and the maximum length and, if necessary,

the minimum length of the air supply and combustion products evacuation ducts;

 give the particular characteristics of the terminal guard, where provision for this is made, and

information on its installation relative to the terminal.
6.1.7 Supply of combustion air and evacuation of the combustion products
6.1.7.3 Type B appliances
Replace the existing text by the following :
"6.1.7.3.1 General

The outlet connection shall be female. Except for types B and B water heaters, the flue outlet shall

4 5

be designed such that, if necessary by means of an adapter supplied with the water heater, it allows

connection to a flue pipe whose diameter complies with the standards or practices in force in the

country where the water heater is to be installed (see Table A.9). The connection shall not impair the

evacuation of the combustion products.

It shall be possible to insert the flue to a depth of at least 15 mm. When inserted as far as possible,

the evacuation of the combustion products shall not be impaired.

The minimum and maximum flue diameters for which the water heater is designed shall be stated in

the installation instructions.

For a separate combustion products evacuation duct which is supplied with a type B or B water

4 5
heater, the requirements given in 6.1.7.4, in
...

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