SIST-TP CEN/TR 1749:2010

European scheme for the classification of gas appliances according to the method of evacuation of the combustion products (types)

The general scheme for type A, type B and type C appliances is given in 1.1, 1.2 and 1.3 respectively. Diagrams are also given in Annex A to assist in the identification of the various appliance types.

Europäischer Leitfaden für die Klassifizierung von Gasgeräten nach der Art der Abgasabführung (Arten)

Modèle européen pour la classification des appareils utilisant les combustibles gazeux selon le mode d'évacuation des produits de combustion (types)

Le schéma général pour les appareils de type A, type B et type C est explicité en 1.1, 1.2 et 1.3
respectivement. Des figures sont aussi présentées en Annexe A pour faciliter l'identification des différents
types d'appareils.
1.1 Type A
Appareil qui n'est pas destiné à être raccordé à un conduit ou à un dispositif d'évacuation des produits de
combustion vers l'extérieur du local dans lequel il est installé.
Type A1 Appareil sans ventilateur.
Type A2 Appareil avec un ventilateur en aval de la chambre de combustion/de l'échangeur de chaleur.
Type A3 Appareil avec ventilateur en amont de la chambre de combustion/de l'échangeur de chaleur.
1.2 Type B
Appareil qui est destiné à être raccordé à un conduit d'évacuation des produits de combustion vers l'extérieur
du local dans lequel il est installé. L’air de combustion est prélevé directement dans le local.
Type B1 Appareil de type B comprenant un coupe-tirage.
Type B11 Appareil de type B1 fonctionnant en tirage naturel.
Type B12 Appareil de type B1 destiné à être raccordé à un conduit d’évacuation des produits de
combustion fonctionnant en tirage naturel et comprenant un ventilateur en aval de la chambre de
combustion/de l'échangeur de chaleur mais en amont du coupe-tirage.
Type B13 Appareil de type B1 destiné à être raccordé à un conduit d’évacuation des produits de
combustion fonctionnant en tirage naturel et comprenant un ventilateur en amont de la chambre de
combustion/de l'échangeur de chaleur.
Type B14 Appareil de type B1 comprenant un ventilateur intégré en aval à la fois de la chambre de
combustion/de l'échangeur de chaleur et du coupe-tirage.
Type B2 Appareil de type B sans coupe-tirage.
Type B211) Appareil de type B2 fonctionnant en tirage naturel.
Type B22 Appareil de type B2 comprenant un ventilateur en aval de la chambre de combustion/de
l'échangeur de chaleur.
Type B23 Appareil de type B2 comprenant un ventilateur en amont de la chambre de combustion/de
l'échangeur de chaleur.

Evropska shema za razvrščanje plinskih aparatov glede na način odvajanja produktov zgorevanja (tipi)

Splošna shema za naprave tipa A, tipa B in tipa C je podana v točkah 1.1, 1.2 in 1.3 v tem zaporedju. Diagrami v pomoč pri identifikaciji različnih tipov naprav so podani tudi v Dodatku A.

General Information

• Status: Withdrawn
• Publication Date: 14-Mar-2010
• Withdrawal Date: 10-Jul-2014
• ICS: 91.140.40 - Gas supply systems
• Technical Committee: PLN - Gas appliances for domestic use
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 10-Jul-2014
• Due Date: 02-Aug-2014
• Completion Date: 11-Jul-2014
• Ref Project: CEN/TR 1749:2009 - European scheme for the classification of gas appliances according to the method of evacuation of the combustion products (types)

Relations

• Replaces: SIST-TP CEN/TR 1749:2006 - European scheme for the classification of gas appliances according to the method of evacuation of the combustion products (types)
• Effective Date: 01-Apr-2010
• Replaced By: SIST-TP CEN/TR 1749:2014 - European scheme for the classification of gas appliances according to the method of evacuation of the combustion products (types)
• Effective Date: 01-Sep-2014
• Replaced By: SIST-TP CEN/TR 1749:2014 - European scheme for the classification of gas appliances according to the method of evacuation of the combustion products (types)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TP CEN/TR 1749:2010
01-april-2010
1DGRPHãþD
SIST-TP CEN/TR 1749:2006
(YURSVNDVKHPD]DUD]YUãþDQMHSOLQVNLKDSDUDWRYJOHGHQDQDþLQRGYDMDQMD
SURGXNWRY]JRUHYDQMDWLSL
European scheme for the classification of gas appliances according to the method of
evacuation of the combustion products (types)
Europäischer Leitfaden für die Klassifizierung von Gasgeräten nach der Art der
Abgasabführung (Arten)
Modèle européen pour la classification des appareils utilisant les combustibles gazeux
selon le mode d'évacuation des produits de combustion (types)
Ta slovenski standard je istoveten z: CEN/TR 1749:2009
ICS:
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
SIST-TP CEN/TR 1749:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CEN/TR 1749:2010

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SIST-TP CEN/TR 1749:2010


TECHNICAL REPORT
CEN/TR 1749

RAPPORT TECHNIQUE

TECHNISCHER BERICHT
October 2009
ICS 91.140.40 Supersedes CEN/TR 1749:2005
English Version
European scheme for the classification of gas appliances
according to the method of evacuation of the combustion
products (types)
Modèle européen pour la classification des appareils Europäischer Leitfaden für die Klassifizierung von
utilisant les combustibles gazeux selon le mode Gasgeräten nach der Art der Abgasabführung (Arten)
d'évacuation des produits de combustion (types)


This Technical Report was approved by CEN on 6 August 2009. It has been drawn up by the Technical Committee CEN/SS H99.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.






EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 1749:2009: E
worldwide for CEN national Members.

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SIST-TP CEN/TR 1749:2010
CEN/TR 1749:2009 (E)
Contents Page
Foreword . 3
1 General scheme . 5
1.1 Type A . 5
1.2 Type B . 5
1.3 Type C . 6
2 Supplementary classification scheme for type A and type B appliances fitted with
particular safety devices . 8
3 Supplementary classification scheme for type B appliances for use in limited installation
conditions . 8
3.1 Type B appliance utilising a third subscript “D” . 8
3.2 Type B appliances utilising a third subscript “P” . 9
3.2.1 Type B appliances without draught diverters . 9
3.2.2 Type B appliances with draught diverters . 9
4 Supplementary classification scheme for type C appliances for use in limited installation
conditions . 9
4.1 Type C appliances utilising a third subscript “R” . 9
1
Annex A (normative) Classification according to the mode of evacuation of the products of
combustion . 10
Annex B (normative) Special national appliance classification (types) . 25
B.1 Germany . 25
Annex C (informative) Appliance types designed for connection to separate chimney products . 32

2

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Foreword
This document (CEN/TR 1749:2009) has been prepared by Technical Committee CEN/TC SFG_U “Sector
Forum Gas Utilisation”, the secretariat of which is held by AFNOR.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TR 1749:2005.
This technical report has been prepared under the aegis of the Sector Forum Gas Utilisation committee to
provide guidance to CEN Technical Committees who are preparing European Standards for appliances
burning combustible gases.
It gives details of a general scheme for the classification of such appliances according to the method of
evacuating the products of combustion. It must be stressed that this scheme only concerns gas appliances
that are intended to be installed within buildings. It does not apply to outdoor appliances. Nevertheless, it is
recognised that this appliance classification scheme could be utilised in other circumstances. For example, in
the case of :
a) Appliances capable of utilising heating oil or kerosene, and
b) Gas appliances intended for installation in a partially protected location external to a building.
This form of appliance classification is widely used in the preparation of European Standards for gas
appliances to identify the requirements and methods of test that are applicable to the various methods of
evacuating the products of combustion. Appliances classified in this way are generally described as “types”
and this description has been retained for the purposes of this general scheme.
The main purpose of the scheme is to promote harmonization in the classification of appliance types. This
should ensure that there is a clear understanding of the various appliance types and will avoid confusion
arising from Technical Committees describing them in different ways. CEN Technical committees are
therefore requested to use this scheme in all circumstances in which it is appropriate. They should not
deviate from it unless there are sound technical reasons for so doing.
In the preparation of this scheme it was noted that there were methods of evacuating products of combustion
that were particular to a specific Technical Committee or to a particular gas appliance. These particular
methods have not been included in the present scheme because, as indicated above, the main purpose of the
scheme is to promote harmonization across Technical Committees.
However, it is intended that this scheme should be reviewed from time to time in order to consider its
extension to other, possibly new, methods of evacuating products of combustion. At that time, such specific
methods of evacuating products of combustion may be included at the request of the Technical Committees
concerned.
Explanatory notes
The following notes are given in explanation of the classification scheme.
NOTE 1 The general scheme classifies appliances as type A, B or C according to the basic principle for the evacuation
of the products of combustion. These definitions are written intentionally in very broad terms in order to cover any possible
variations in the basic appliance types.
A series of subscript numbers is used in addition to these letters to identify specific variations within these basic principles.
3

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The last subscript number of each specific variation indicates the absence or presence of an integral fan for the supply of
combustion air and/or for the evacuation of the products of combustion. Where such a fan is present, the numbers 2, 3 or
4 are given. These three numbers are used solely to identify the location of this fan.
NOTE 2 Diagrams have been given in annex A, showing examples of the various appliance types. However, it should
be noted that diagrams for type C appliances have not been included. This is because such appliances are marketed
6
without duct systems. When installed such an appliance will have a configuration similar to one of the arrangements
shown for other type C appliances.
Appliance Technical Committees have the responsibility for inclusion of requirements and methods of test in their
standards to ensure that type C appliances are suitable for their intended method(s) of installation.
6
In order to ensure that type C appliances are only installed in accordance with their intended methods of installation, it is
6
recommended that they be marked as described in NOTE 1 above firstly to identify their particular type C classification
6
and then, in brackets, to identify their intended method(s) of installation.
For example :
A type C appliance that is intended to be installed similar to a type C appliance would be identified as:
62 42
A type C (C ) appliance
62 42
A type C appliance that is intended to be installed similar to a type C or type C appliance would be identified as:
63 13 33
A type C (C , C ) appliance.
63 13 33
NOTE 3 The supplementary classification scheme for type A and type B appliances has been included to clarify the
identification of such appliances when fitted with different safety devices. The subscript letters “AS” (atmosphere safety)
refer to an atmosphere sensing device and the subscript letters “BS” (blocked safety) refer to a clearance monitoring
device, which reacts to blockage or restriction of the flue system.
In order to provide information about appliance types that are recognized in certain CEN member states, annex B has
been included in which special national appliance classifications may be identified. At present, this annex identifies
appliance types that are particular to Germany.
NOTE 4 Annex C identifies appliance types that are designed for connection to separate chimney products which may
be part of the construction of the building.
4

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1 General scheme
The general scheme for type A, type B and type C appliances is given in 1.1, 1.2 and 1.3 respectively.
Diagrams are also given in Annex A to assist in the identification of the various appliance types.
1.1 Type A
An appliance not intended for connection to a flue or to a device for evacuating the products of combustion to
the outside of the room in which the appliance is installed.
Type A . An appliance without a fan.
1
Type A . An appliance with a fan downstream of the combustion chamber/heat exchanger.
2
Type A . An appliance with a fan upstream of the combustion chamber/heat exchanger.
3
1.2 Type B
An appliance intended to be connected to a flue that evacuates the products of combustion to the outside of
the room containing the appliance. The combustion air is drawn directly from the room.
Type B . A type B appliance incorporating a draught diverter.
1
Type B . A natural draught type B appliance.
11 1
Type B . A type B appliance designed for a natural draught flue incorporating a fan downstream of the
12 1
combustion chamber/heat exchanger and upstream of the draught diverter.
Type B . A type B appliance designed for a natural draught flue incorporating a fan upstream of the
13 1
combustion chamber/heat exchanger.
Type B . A type B appliance having an integral fan downstream of both the combustion chamber/heat
14 1
exchanger and the draught diverter.
Type B . A type B appliance without a draught diverter.
2
1)
Type B A natural draught type B appliance.
21 2
Type B . A type B appliance incorporating a fan downstream of the combustion chamber/heat exchanger.
22 2
Type B . A type B appliance incorporating a fan upstream of the combustion chamber/heat exchanger.
23 2
Type B . A type B appliance without a draught diverter, which is designed for connection to a common duct
3
system. This common duct system consists of a single natural draught flue. All pressurized parts of the
appliance containing products of combustion are completely enclosed by parts of the appliance supplying
combustion air. Combustion air is drawn into the appliance 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.
Type B . A natural draught type B appliance.
31 3

1) A type B appliance will not generally be included in the scope of European Standards for gas appliances. However,
21
it may apply in special circumstances e.g. gas-fired incinerators.
5

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Appliances of this type are not foreseen.
Type B . A type B appliance incorporating a fan downstream of the combustion chamber/heat exchanger.
32 3
Type B . A type B appliance incorporating a fan upstream of the combustion chamber/heat exchanger.
33 3
Type B A type B appliance, incorporating a draught diverter, that is designed for connection via its flue duct
4.
to its flue terminal.
2)
A natural draught type B appliance.
Type B
41 4
Type B . A type B appliance designed for a natural draught flue incorporating a fan downstream of the
42 4
combustion chamber/heat exchanger and upstream of the draught diverter.
Type B . A type B appliance designed for a natural draught flue incorporating a fan upstream of the
43 4
combustion chamber/heat exchanger.
Type B . A type B appliance having an integral fan downstream of both the combustion chamber/heat
44 4
exchanger and the draught diverter.
Type B A type B appliance, without a draught diverter, that is designed for connection via its flue duct to its
5.
flue terminal.
3)
Type B A natural draught type B appliance.
51 5
Type B . A type B appliance incorporating a fan downstream of the combustion chamber/heat exchanger.
52 5
Type B . A type B appliance incorporating a fan upstream of the combustion chamber/heat exchanger.
53 5
1.3 Type C
An appliance in which the combustion circuit (air supply, combustion chamber, heat exchanger and
evacuation of the products of combustion) is sealed with respect to the room in which the appliance is
installed.
Type C . A type C appliance that is designed for connection via its ducts to its horizontal terminal, which at the
1
same time admits fresh air to the burner and discharges the products of combustion to the outside through
orifices that are either concentric or close enough to come under similar wind conditions.
Type C . A natural draught type C appliance.
11 1
Type C . A type C appliance incorporating a fan downstream of the combustion chamber/heat exchanger.
12 1
Type C . A type C appliance incorporating a fan upstream of the combustion chamber/heat exchanger.
13 1
4)
Type C . A type C appliance connected via its two ducts to a common duct system serving more than one
2
appliance. This system consists of a single duct, which supplies the combustion air and evacuates the
products of combustion.
Type C . A natural draught type C appliance.
21 2

2) Type B appliances installed in mobile homes (caravan holiday homes) are commonly described as “closed flue”
41
appliances; this terminology being used in EN 1949, which covers the installation of such appliances.
3) A type B appliance will not generally be included in the scope of European Standards for gas appliances. However,
51
it may apply in special circumstances e.g. gas-fired incinerators.
4) This common duct system is part of the constru
...