EN 1749:2020
(Main)Classification of gas appliances according to the method of supplying combustion air and of evacuation of the combustion products (types)
Classification of gas appliances according to the method of supplying combustion air and of evacuation of the combustion products (types)
This document gives details for the classification of gas appliances according to the method of supplying combustion air and of evacuating the combustion products (types). This classification refers to gas appliances that are intended to be installed within buildings and/or outside of the building .
The document classifies appliances as type A, B or C according to the basic principle for the evacuation of the combustion products and air inlet.
This document is the reference for the harmonization of product standards, for the preparation of installation standards and for the common understanding of the types of gas appliances.
This document is neither an installation standard nor a product standard.
In references to a gas appliance or gas appliances connected via "its" or "their" duct or ducts, it is intended that the air inlet duct and/or the discharge duct for carrying any combustion products are part of the gas appliance. This means that such ducts are certified together with the gas appliance. Informative Annex C identifies appliance types that are designed for connection to separate chimney products, which may be part of the construction of the building.
In terms of this document, a "single duct" is a flue duct designed and capable of discharging the combustion products and/or air inlet duct for the air supply for only one appliance.
In terms of this document, a "common duct" is a flue duct designed and capable of discharging the combustion products and/or air inlet duct for the air supply for more than one appliance.
Klassifizierung von Gasgeräten nach der Art der Verbrennungsluftzuführung und Abgasabführung (Arten)
Dieses Dokument stellt Details für die Klassifizierung von Gasgeräten nach der Art der Verbrennungsluftzuführung und der Abgasabführung (Arten) dar. Diese Klassifizierung bezieht sich auf Gasgeräte, die dafür vorgesehen sind, in Gebäuden und/oder außerhalb von Gebäuden installiert zu werden .
Das Dokument klassifiziert die Gasgeräte als Arten A, B oder C entsprechend dem Grundprinzip zur Abführung der Abgase und Verbrennungsluftzuführung.
Dieses Dokument ist eine Bezugsnorm zur harmonisierung der Produktnormen für Gasgeräte, zur Erarbeitung von Aufstell- und Installationsanforderungen der Gasgeräte und für ein einheitliches Verständnis der Arten der Gasgeräte.
Dieses Dokument ist weder eine Installationsnorm noch eine Produktnorm.
Mit der Verweisung auf ein Gasgerät oder Gasgeräte, das/die über „seine“ bzw. über „ihre“ Leitung bzw. Leitungen angeschlossen ist/sind, wird ausgedrückt, dass diese Leitungen zur Verbrennungsluftzuführung und/oder Abgasabführung als Teil des Gasgeräts gelten. Dies bedeutet, dass solche Leitungen zusammen mit dem Gasgerät zertifiziert sind. Der informative Anhang C beschreibt für die Gasgerätearten, die für den Anschluss an separate Abgasanlagen vorgesehen sind, welche Teile der Abgasanlage separat geliefert werden und welche Bestandteil des Gebäudes sein können
Im Verständnis dieses Dokuments ist eine „einzelne Leitung“ eine Abgasleitung, die so ausgelegt und ausgeführt ist, dass sie für nur ein Gasgerät Abgas abführt und/oder Verbrennungsluft zuführt.
Im Verständnis dieses Dokuments ist eine „gemeinsame Leitung“ eine Abgasleitung, die so ausgelegt und ausgeführt ist, dass sie für mehr als ein Gasgerät Abgas abführt und/oder Verbrennungsluft zuführt.
Classification des appareils utilisant les combustibles gazeux selon le mode d'amenée d'air comburant et le mode d'évacuation des produits de combustion (types)
Le présent document donne des précisions sur la classification des appareils à gaz suivant le mode d'amenée d'air comburant et le mode d'évacuation des produits de combustion (types). Cette classification concerne les appareils à gaz destinés à être installés à l'intérieur et/ou à l'extérieur des bâtiments .
Le document classe les appareils en type A, B ou C selon le principe de base d'évacuation des produits de combustion et d'amenée d'air.
Le présent document est un guide pour l'harmonisation des normes de produits, pour la préparation des normes d'installation et pour la compréhension commune des types d'appareils à gaz.
Le présent document n'est ni une norme d'installation ni une norme de produit.
En référence à l'appareil ou aux appareils à gaz raccordés via « leur(s) » conduit(s), il est entendu que le conduit d'amenée d'air et/ou le conduit d'évacuation des produits de combustion font partie de l'appareil. Ceci signifie que ces conduits sont certifiés avec l'appareil. L'Annexe C informative identifie les types d'appareils destinés à être raccordés à un conduit de fumée séparé qui peut faire partie du bâtiment.
Au sens du présent document, un « conduit individuel » est un conduit conçu pour évacuer les produits de combustion et/ou assurer l'amenée d'air pour un seul appareil.
Au sens du présent document, un « conduit collectif » est un conduit conçu pour évacuer les produits de combustion et/ou assurer l'amenée d'air pour plus d'un appareil.
Razvrščanje plinskih aparatov glede na način dovajanja zgorevalnega zraka in odvajanja produktov zgorevanja (tipi)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2020
Nadomešča:
SIST-TP CEN/TR 1749:2014
Razvrščanje plinskih aparatov glede na način dovajanja zgorevalnega zraka in
odvajanja produktov zgorevanja (tipi)
Classification of gas appliances according to the method of supplying combustion air and
of evacuation of the combustion products (types)
Klassifizierung von Gasgeräten nach der Art der Verbrennungsluftzuführung und
Abgasabführung (Arten)
Classification des appareils utilisant les combustibles gazeux selon le mode d'amenée
d'air comburant et le mode d'évacuation des produits de combustion (types)
Ta slovenski standard je istoveten z: EN 1749:2020
ICS:
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1749
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2020
EUROPÄISCHE NORM
ICS 91.140.40 Supersedes CEN/TR 1749:2014
English Version
Classification of gas appliances according to the method of
supplying combustion air and of evacuation of the
combustion products (types)
Classification des appareils utilisant les combustibles Klassifizierung von Gasgeräten nach der Art der
gazeux selon le mode d'amenée d'air comburant et le Verbrennungsluftzuführung und Abgasabführung
mode d'évacuation des produits de combustion (types) (Arten)
This European Standard was approved by CEN on 13 October 2019.
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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1749:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 General scheme . 6
4.1 General . 6
4.2 Type A . 7
4.3 Type B . 7
4.4 Type C . 9
5 Supplementary classification scheme for type A and type B appliances fitted with
particular safety devices . 14
6 Supplementary classification scheme for type B appliances for use in limited
installation conditions . 14
)
6.1 Type B appliance utilizing a third subscript “D” . 14
)
6.2 Type B appliances utilizing a third subscript “P” . 14
7 Supplementary classification scheme for type C appliances for use in limited
installation conditions — Type C appliances utilizing a third subscript “R” . 15
Annex A (normative) Classification according to the evacuation of the combustion products
and air inlet . 16
Annex B (informative) Special appliance classification (types) . 37
Annex C (informative) Appliance types designed for connection to separate chimney
products . 48
European foreword
This document (EN 1749:2020) has been prepared by Technical Committee CEN/TC 238 “Test gases,
test pressures, appliance categories and gas appliance types”, the secretariat of which is held by AFNOR.
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 July 2020, and conflicting national standards shall be
withdrawn at the latest by July 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TR 1749:2014.
The main changes compared to the previous edition are listed below:
— editorial changes, a reviewed wording and a reviewed structure compared to the TR version
(CEN/TR 1749:2014);
— some technical items generally described in the foreword of the former TR are now included in the
scope or in other clauses of the standard (1; 4.1; 4.4);
— a clause on normative references has been included (Clause 2);
— a clause on terms and definitions has been included (Clause 3);
— examples of reworded clauses:
— Type B (4.3);
— Type C6 (4.4);
— Type C(11) (4.4);
— Type C(13) (4.4);
— Type C(14) (4.4).
— a key for figures has been added and some figures have been modified, according to the key adopted
(Annex A);
— Annex B has a wider application than Germany. Due to this change, the former Annex D has been
deleted;
— Annex C replaces the former Annex E;
— The former Annex C has been deleted.
The user is advised to compare the previous text with the current version.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
This document has been prepared to provide reference scheme for classification of gas appliances 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
air supply and evacuating the combustion products. This document concerns gas appliances that are
intended to be installed within buildings or outside buildings. Nevertheless, it is recognized that this
appliance classification scheme could be utilized in other circumstances. For example, in the case of
appliances capable of utilizing other fuels.
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 combustion products and air supply. Appliances classified in this way are generally
described as “types” and this description has been retained for the purposes of this document.
The definitions are written intentionally in very general terms in order to cover any possible variations
in the basic appliance types.
The main purpose of the document 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 document as reference in all circumstances in which it is
appropriate. They should not deviate from it unless there are relevant technical reasons for doing so.
In the preparation of this scheme it was noted that there were methods of evacuating combustion
products 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 combustion products. At that time, such specific
methods of evacuating combustion products may be included at the request of the Technical
Committees concerned.
1 Scope
This document gives details for the classification of gas appliances according to the method of supplying
combustion air and of evacuating the combustion products (types). This classification refers to gas
appliances that are intended to be installed within buildings and/or outside of the building .
The document classifies appliances as type A, B or C according to the basic principle for the evacuation
of the combustion products and air inlet.
This document is the reference for the harmonization of product standards, for the preparation of
installation standards and for the common understanding of the types of gas appliances.
This document is neither an installation standard nor a product standard.
In references to a gas appliance or gas appliances connected via “its” or “their” duct or ducts, it is
intended that the air inlet duct and/or the discharge duct for carrying any combustion products are part
of the gas appliance. This means that such ducts are certified together with the gas appliance.
Informative Annex C identifies appliance types that are designed for connection to separate chimney
products, which may be part of the construction of the building.
In terms of this document, a “single duct” is a flue duct designed and capable of discharging the
combustion products and/or air inlet duct for the air supply for only one appliance.
In terms of this document, a “common duct” is a flue duct designed and capable of discharging the
combustion products and/or air inlet duct for the air supply for more than one appliance.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp/ui
4 General scheme
4.1 General
The general scheme for Type A, Type B and Type C appliances is given in 4.2, 4.3 and 4.4 respectively.
A series of subscript numbers is used in addition to these letters to identify specific variations within
these basic principles.
Where this first subscript number exceeds “9” it is given in brackets to clarify that it is a single subscript
number and not two subscript numbers.
1) If the appliance is installed outside of the building (if this circumstance is explicitly allowed by the
manufacturer) it will not change its classification (i.e.: a type B appliance will remain a type B if installed
53 53
outside according to manufacturer instructions). These appliances are subject to specific additional requirements
and tests, according to specific product standards.
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 combustion products.
If the last subscript number is “1”, no integral fan for the supply of combustion air and/or for the
evacuation of the combustion products is present. Where 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.
Figures are also given in Annex A to assist in the identification of the various appliance typ
...
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