Chimneys - Accessories - Part 4: Flue dampers - Requirements and test methods

This document specifies the characteristics and test methods for flue dampers that are used as components, carrying flue gas, in order to limit the flow in a chimney or to prevent back flow of soot during cleaning of the chimney or to prevent the backflow of the flue gas e.g. in case of multi-served chimneys.
This document covers only flue dampers incorporated in a housing and installed inside a building.
This document covers only flue dampers with sealings made of elastomeric materials for temperature classes up to T 200 and corrosion class 1 or 2 in accordance with EN 14241-1 or sealing materials for dry applications with a fire reaction class A1 in accordance with EN 13501-1.
This document covers only flue dampers with motor drive, casing and flue damper plate which are interlocked in such a way that they can only be separated by using tools.
This document covers only mechanical flue dampers where any motor is in accordance with EN 60730-2-14 and the cover for electrical components of the flue damper fulfils minimum protection class IP40 according to EN 60529.
This document covers only flue dampers which are designed and installed to ensure that incorrect information about the position of the flue damper flap are absolutely impossible, which are only installed on components that are interlocked to the casing, which are only activated by components that are interlocked to the flue damper flap and where it is ensured that the limit switch opens or the flue damper flap moves to the open position if one of these interlocks fails. This safety target may also be achieved with an equally suitable method (e.g. bracing or welding).
This document covers only flue dampers for biomass boilers ≥ 1 000 kW and industrial applications with limit switches in accordance with EN 61058-1 or EN 50156-1.
This document covers only flue dampers where it is possible to identify the position of the flue damper flap.
This document covers only totally closed, manually driven flue dampers (type 1) which have a facility to adjust the position of the flue damper flap.
This document covers only totally closed, mechanically driven flue dampers (type 2) with only the positions "fully opened" and "fully closed" and where it is not possible to fix the flap in the non-closed position during the flue damper flap stays in closed position while the appliance is not working.
NOTE   This applies only to multi-appliance installations with positive pressure conditions.
This document covers only partially closed flue dampers (type 3 to 5) where it is possible to adjust the position of the flue damper flap and where it is ensured that the flue damper flap does not change position by itself.
Flue dampers which are integral parts of system chimney products or other chimney components, e.g. flue liners, connecting flue pipes, are not covered by this document.
This document also specifies the provisions for marking, manufacturers’ instruction, product information, Assessment and Verification of Constancy of Performance (AVCP).
This document does not specify issues for electrical parts.

Abgasanlagen - Zubehörteile - Teil 4: Abgasklappen - Anforderungen und Prüfverfahren

Dieses Dokument legt die Eigenschaften und Prüfverfahren für Abgasklappen fest, die als abgasführende Bauteile genutzt werden, um den Durchfluss in einer Abgasanlage zu begrenzen oder den Rußaustritt während der Reinigung der Abgasanlage oder den Abgasaustritt, etwa im Fall von mehrfach belegten Abgasanlagen, zu verhindern.
Dieses Dokument behandelt nur in ein Gehäuse eingebaute und innerhalb von Gebäuden installierte Abgasklappen.
Dieses Dokument behandelt nur Abgasklappen mit Dichtungen aus Elastomer-Werkstoffen für Temperaturklassen bis T 200 und die Korrosionsklassen 1 oder 2 in Übereinstimmung mit EN 14241 1 oder Dichtungswerkstoffe für trockene Anwendungen mit einer Brandverhaltensklasse A1 in Übereinstimmung mit EN 13501 1.
Dieses Dokument behandelt nur Abgasklappen mit Motorantrieb, Gehäuse und Abgasklappenscheibe, die so verriegelt sind, dass sie nur mithilfe von Werkzeugen auseinandergenommen werden können.
Dieses Dokument behandelt nur mechanische Abgasklappen, deren Motor die Anforderungen nach EN 60730 2 14 erfüllt und bei denen die Abdeckung elektrischer Komponenten mindestens der Schutzklasse IP40 nach EN 60529 entspricht.
Dieses Dokument behandelt nur Abgasklappen, die so gestaltet und installiert sind, dass falsche Informationen über die Position der Abgasklappenscheibe absolut unmöglich sind, die nur an Komponenten installiert werden, die am Gehäuse verriegelt sind, die nur durch an der Abgasklappenscheibe verriegelte Komponenten aktiviert werden und wo sichergestellt wird, dass der Betriebsendschalter sich öffnet oder sich die Abgasklappenscheibe in die offene Position bewegt, falls eine dieser Verriegelungen fehlschlägt. Dieses Sicherheitsziel darf auch durch eine ähnlich geeignete Methode (z. B. Aussteifung oder Schweißen) erreicht werden.
Dieses Dokument behandelt nur Abgasklappen für Biomassekessel ≥ 1 000 kW und Industrieanwendungen mit Betriebsendschaltern in Übereinstimmung mit EN 61058 1 oder EN 50156 1.
Dieses Dokument behandelt nur Abgasklappen, bei denen es möglich ist, die Position der Abgasklappenscheibe zu erkennen.
Dieses Dokument behandelt nur vollständig geschlossene, manuell betriebene Abgasklappen (Typ 1) mit einer Vorrichtung zur Einstellung der Position der Abgasklappenscheibe.
Dieses Dokument behandelt nur vollständig geschlossene, mechanisch angetriebene Abgasklappen (Typ 2) nur mit den Stellungen „vollständig geöffnet“ und „vollständig geschlossen“, bei denen es nicht möglich ist, die Scheibe in der nicht geschlossenen Stellung zu fixieren, wenn die Abgasklappenscheibe außerhalb des Betriebs des Geräts in der geschlossenen Stellung verbleibt.
ANMERKUNG   Dies gilt nur für Installationen mit mehreren Verbrennungseinrichtungen und Überdruckbedingungen.
Dieses Dokument behandelt nur teilweise geschlossene Abgasklappen (Typ 3 bis 5), bei denen es möglich ist, die Stellung der Abgasklappenscheibe einzustellen und bei denen sichergestellt ist, dass die Abgasklappenscheibe ihre Position nicht selbstständig ändert.
Abgasklappen, die integraler Bestandteil von System-Abgasanlagen oder anderen Bauteilen einer Abgasanlage sind, wie z. B. Innenrohre, Verbindungsstücke, werden nicht von diesem Dokument abgedeckt.
Dieses Dokument legt auch Bestimmungen für Kennzeichnung, Anweisungen des Herstellers, Produktinformationen, Bewertung und Überprüfung der Leistungsbeständigkeit (AVCP) fest.
Dieses Dokument legt keine Aspekte für elektrische Teile fest.

Conduits de fumée - Accessoires - Partie 4 : Clapets de fumées - Exigences et méthodes d’essai

Le présent document spécifie les exigences et les méthodes d’essai pour les clapets de fumées utilisés comme composants, transportant les gaz de fumées, afin de limiter l’écoulement dans un conduit de fumée ou d’empêcher le retour des gaz de fumées, par exemple dans le cas des conduits de fumée collectifs.
Le présent document traite uniquement des clapets de fumées intégrés dans un logement et installés à l’intérieur d’un bâtiment.
Le présent document traite uniquement des clapets de fumées comportant des produits d’étanchéité en matériaux élastomères pour les classes de température allant jusqu’à T 200 et la classe de corrosion 1 ou 2 conformément à l’EN 14241-1 ou des produits d’étanchéité pour les applications sèches de la classe de réaction A1 conformément à l’EN 13501-1.
Le présent document traite uniquement des clapets de fumées dont l’entraînement du moteur, le boîtier et la plaque du clapet de fumées sont fixés ensemble de manière à ne pouvoir être séparés que par des outils.
Le présent document traite uniquement des clapets de fumées mécaniques dont le moteur éventuel est conforme à l’EN 60730-2-14 et dont le capot des composants électriques du clapet de fumées satisfait à la classe de protection minimale IP40 conformément à l’EN 60529.
Le présent document traite uniquement des clapets de fumées qui sont conçus et installés de façon à garantir que des informations incorrectes sur la position du volet du clapet de fumées soient absolument impossibles, qui ne sont installés que sur des éléments qui sont fixés sur le boîtier, qui ne sont activés que par des éléments qui sont fixés sur le volet du clapet de fumées et pour lesquels il est garanti que le contacteur de fin de course s’ouvre ou que le volet du clapet de fumées se déplace dans la position ouverte si l’une de ces fixations fait défaut. Cet objectif de sécurité peut également être atteint au moyen d’un procédé tout aussi adapté (frettage ou soudage, par exemple).
Le présent document traite uniquement des clapets de fumées pour les chaudières à biomasse ≥ 1 000 kW et les applications industrielles contenant des contacteurs de fin de course conformément à l’EN 61058-1 ou à l’EN 50156-1.
Le présent document traite uniquement des clapets de fumées dans lesquels il est possible d’identifier la position du volet du clapet de fumées.
Le présent document traite uniquement des clapets de fumées fermant totalement, à commande manuelle (type 1) qui disposent d’un moyen de régler la position du volet du clapet de fumées.
Le présent document traite uniquement des clapets de fumées totalement fermés, à commande mécanique (type 2) comportant seulement les positions « complètement ouvert » et « complètement fermé » et dans lesquels il n’est pas possible de fixer le volet dans la position non fermée lorsque le volet du clapet de fumées reste dans la position fermée alors que l’appareil ne fonctionne pas.
NOTE   Ceci s’applique uniquement aux installations à appareils multiples dans des conditions de pression positive.
Le présent document traite uniquement des clapets de clapet de fumées fermant partiellement (type 3 à 5) dans lesquels il est possible de régler la position du volet du clapet de fumées et dans lesquels il est garanti que le volet du clapet de fumées ne peut pas changer de position de lui-même.
Les clapets de fumées qui font partie intégrante de composants de systèmes de conduits de fumée ou d’autres composants du conduit de fumée, tels que les conduits de tubage ou les éléments de raccordement, ne sont pas couverts par le présent document.
Le présent document spécifie également les dispositions relatives au marquage, aux instructions du fabricant, aux informations sur le produit, à l’évaluation et la vérification de la constance des performances (EVCP).
...

Dimovodne naprave - Oprema - 4. del: Dimovodne lopute - Zahteve in preskusne metode

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Published
Publication Date
14-Apr-2020
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
15-Apr-2020
Completion Date
15-Apr-2020

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SLOVENSKI STANDARD
SIST EN 16475-4:2020
01-junij-2020
Dimovodne naprave - Oprema - 4. del: Dimovodne lopute - Zahteve in preskusne
metode
Chimneys - Accessories - Part 4: Flue dampers - Requirements and test methods

Abgasanlagen - Zubehörteile - Teil 4: Abgasklappen - Anforderungen und Prüfverfahren

Conduits de fumée - Accessoires - Partie 4: Clapets de gaz de fumées - Exigences et

méthodes d'essai
Ta slovenski standard je istoveten z: EN 16475-4:2020
ICS:
91.060.40 Dimniki, jaški, kanali Chimneys, shafts, ducts
SIST EN 16475-4:2020 en,fr,de

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

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SIST EN 16475-4:2020
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SIST EN 16475-4:2020
EN 16475-4
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2020
EUROPÄISCHE NORM
ICS 91.060.40
English Version
Chimneys - Accessories - Part 4: Flue dampers -
Requirements and test methods

Conduits de fumée - Accessoires - Partie 4 : Clapets de Abgasanlagen - Zubehörteile - Teil 4: Abgasklappen -

fumées - Exigences et méthodes d'essai Anforderungen und Prüfverfahren
This European Standard was approved by CEN on 24 February 2020.

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 16475-4:2020 E

worldwide for CEN national Members.
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SIST EN 16475-4:2020
EN 16475-4:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 5

Introduction .................................................................................................................................................................... 6

1 Scope .................................................................................................................................................................... 7

2 Normative references .................................................................................................................................... 8

3 Terms and definitions ................................................................................................................................... 8

4 Product characteristics ................................................................................................................................. 9

4.1 General ................................................................................................................................................................ 9

4.1.1 Introduction ...................................................................................................................................................... 9

4.1.2 Temperature classes ...................................................................................................................................... 9

4.1.3 Pressure classes ............................................................................................................................................... 9

4.1.4 Condensate resistance classes .................................................................................................................... 9

4.1.5 Corrosion resistance classes ....................................................................................................................... 9

4.1.6 Sootfire resistance classes ........................................................................................................................... 9

4.1.7 Distance to combustible material ............................................................................................................. 9

4.1.8 Flue damper type ............................................................................................................................................ 9

4.2 Safety in the case of fire ............................................................................................................................. 10

4.2.1 Reaction to fire .............................................................................................................................................. 10

4.2.2 Fire resistance internal to external ....................................................................................................... 11

4.3 Hygiene, health and environment .......................................................................................................... 11

4.3.1 External gas tightness ................................................................................................................................. 11

4.3.2 Internal gas tightness ................................................................................................................................. 11

4.3.3 Flow resistance ............................................................................................................................................. 12

4.3.4 Thermal resistance ...................................................................................................................................... 12

4.3.5 Thermal shock resistance ......................................................................................................................... 12

4.3.6 Impact resistance of the flue damper ................................................................................................... 12

4.3.7 Accidental human contact ......................................................................................................................... 12

4.4 Durability ........................................................................................................................................................ 13

4.4.1 Condensate resistance ................................................................................................................................ 13

4.4.2 Corrosion resistance ................................................................................................................................... 13

4.4.3 Freedom of movement of the flue damper .......................................................................................... 13

5 Testing, assessment and sampling methods ...................................................................................... 14

5.1 Declaration for type test ............................................................................................................................ 14

5.2 Mechanical resistance ................................................................................................................................ 14

5.2.1 Free movement/durability test .............................................................................................................. 14

5.2.2 Impact resistance test ................................................................................................................................. 15

5.3 Thermal performance tests ...................................................................................................................... 16

5.3.1 General ............................................................................................................................................................. 16

5.3.2 Test assembly ................................................................................................................................................ 16

5.3.3 Test procedure .............................................................................................................................................. 18

5.3.4 Test Results .................................................................................................................................................... 19

5.4 Gas tightness .................................................................................................................................................. 19

5.4.1 External gas tightness of the housing for all types of flue dampers .......................................... 19

5.4.2 Internal gas tightness of the flue damper flap for flue damper types 1 and 2 ....................... 20

5.5 Condensate resistance test ....................................................................................................................... 22

5.5.1 Test assembly ................................................................................................................................................ 22

5.5.2 Test procedure .............................................................................................................................................. 23

5.5.3 Test results ..................................................................................................................................................... 23

5.6 Flow resistance of the flue damper ........................................................................................................ 24

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SIST EN 16475-4:2020
EN 16475-4:2020 (E)

5.6.1 Test assembly ................................................................................................................................................. 24

5.6.2 Test procedure .............................................................................................................................................. 24

5.6.3 Test results...................................................................................................................................................... 25

5.7 Test sequence ................................................................................................................................................. 25

6 Assessment and verification of constancy of performance — AVCP .......................................... 26

6.1 General ............................................................................................................................................................. 26

6.2 Type testing .................................................................................................................................................... 26

6.2.1 General ............................................................................................................................................................. 26

6.2.2 Test samples, testing and compliance criteria ................................................................................... 27

6.2.3 Test reports .................................................................................................................................................... 27

6.3 Factory production control (FPC) ........................................................................................................... 28

6.3.1 General ............................................................................................................................................................. 28

6.3.2 Provisions ........................................................................................................................................................ 28

6.3.3 Product specific provisions ....................................................................................................................... 30

6.3.4 Initial inspection of factory and of FPC ................................................................................................. 31

6.3.5 Continuous surveillance of FPC ............................................................................................................... 31

6.3.6 Procedure for modifications ..................................................................................................................... 31

6.3.7 One-off products, pre-production products (e.g. prototypes) and products produced

in very low quantity ..................................................................................................................................... 32

7 Product classification and designation ................................................................................................. 32

7.1 Classification .................................................................................................................................................. 32

7.2 Designation ..................................................................................................................................................... 32

8 Marking, labelling and instruction ......................................................................................................... 33

8.1 Flue damper .................................................................................................................................................... 33

8.2 Product information .................................................................................................................................... 33

8.2.1 Manufacturer's instructions ..................................................................................................................... 33

8.2.2 Minimum information to be included in the manufacturer's instructions ............................. 34

Annex A (normative) Sampling for factory production control .................................................................. 35

A.1 Sampling plans............................................................................................................................................... 35

A.1.1 General ............................................................................................................................................................. 35

A.1.2 Acceptable quality level (AQL)................................................................................................................. 35

A.1.3 Normal, tightened or reduced inspection ............................................................................................ 35

A.1.4 Single, double, multiple or sequential sampling ............................................................................... 35

A.1.5 Batch quantity ................................................................................................................................................ 35

A.2 Inspection levels and procedures ........................................................................................................... 35

A.2.1 Incoming material ........................................................................................................................................ 35

A.2.2 In-process inspection .................................................................................................................................. 36

A.2.3 Finished goods checks ................................................................................................................................ 36

A.3 Electrical inspection .................................................................................................................................... 36

Annex B (informative) Recommended check and test sequence ............................................................... 37

Annex C (informative) Additional information for the use of a flue damper type 2 and 4 ............... 39

C.1 Boilers with forced draught burners ..................................................................................................... 39

C.2 Boilers with burners with fan without air purging .......................................................................... 39

C.3 Boilers with burners with fan with post-purge period ................................................................... 39

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EN 16475-4:2020 (E)

C.4 Gas boilers with burners without fan ................................................................................................... 39

C.5 Closing time of the flue damper flap ..................................................................................................... 39

C.6 Malfunction of the flue damper ............................................................................................................... 39

Annex D (informative) Examples of different types of flue dampers ....................................................... 40

Bibliography ................................................................................................................................................................. 42

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SIST EN 16475-4:2020
EN 16475-4:2020 (E)
European foreword

This document (EN 16475-4:2020) has been prepared by Technical Committee CEN/TC 166 “Chimneys”,

the secretariat of which is held by ASI.

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 October 2020, and conflicting national standards shall

be withdrawn at the latest by January 2022.

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 forms a part of the series of standards EN 16475, Chimneys – Accessories, comprising the

following parts:
— Part 1: Silencers — Requirements and test methods;
— Part 2: Chimney fans — Requirements and test methods;

— Part 3: Draught regulators, standstill opening devices and combined secondary air devices —

Requirements and test methods;
— Part 4: Flue dampers — Requirements and test methods (this part);
— Part 6: Access components — Requirements and test methods;
— Part 7: Rain caps — Requirements and test methods.

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.
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SIST EN 16475-4:2020
EN 16475-4:2020 (E)
Introduction
The main purpose of flue dampers is to close or partially close a flue.

Flue dampers can be manually adjusted, sited in connecting flue pipes or chimneys, in order to reduce

the burning rate (solid fuel stoves/fireplaces) or to work as a shut-off slide preventing back flow of soot

during cleaning of the chimney, or mechanically driven for reducing/closing the flue, in order to reduce

the stand-by losses or to prevent the backflow of the flue gas e.g. in case of multi-served chimneys.

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SIST EN 16475-4:2020
EN 16475-4:2020 (E)
1 Scope

This document specifies the characteristics and test methods for flue dampers that are used as

components, carrying flue gas, in order to limit the flow in a chimney or to prevent back flow of soot

during cleaning of the chimney or to prevent the backflow of the flue gas e.g. in case of multi-served

chimneys.

This document covers only flue dampers incorporated in a housing and installed inside a building.

This document covers only flue dampers with sealings made of elastomeric materials for temperature

classes up to T 200 and corrosion class 1 or 2 in accordance with EN 14241-1 or sealing materials for dry

applications with a fire reaction class A1 in accordance with EN 13501-1.

This document covers only flue dampers with motor drive, casing and flue damper plate which are

interlocked in such a way that they can only be separated by using tools.

This document covers only mechanical flue dampers where any motor is in accordance with

EN 60730-2-14 and the cover for electrical components of the flue damper fulfils minimum protection

class IP40 according to EN 60529.

This document covers only flue dampers which are designed and installed to ensure that incorrect

information about the position of the flue damper flap are absolutely impossible, which are only installed

on components that are interlocked to the casing, which are only activated by components that are

interlocked to the flue damper flap and where it is ensured that the limit switch opens or the flue damper

flap moves to the open position if one of these interlocks fails. This safety target may also be achieved

with an equally suitable method (e.g. bracing or welding).

This document covers only flue dampers for biomass boilers ≥ 1 000 kW and industrial applications with

limit switches in accordance with EN 61058-1 or EN 50156-1.

This document covers only flue dampers where it is possible to identify the position of the flue damper

flap.

This document covers only totally closed, manually driven flue dampers (type 1) which have a facility to

adjust the position of the flue damper flap.

This document covers only totally closed, mechanically driven flue dampers (type 2) with only the

positions “fully opened” and “fully closed” and where it is not possible to fix the flap in the non-closed

position during the flue damper flap stays in closed position while the appliance is not working.

NOTE This applies only to multi-appliance installations with positive pressure conditions.

This document covers only partially closed flue dampers (type 3 to 5) where it is possible to adjust the

position of the flue damper flap and where it is ensured that the flue damper flap does not change position

by itself.

Flue dampers which are integral parts of system chimney products or other chimney components, e.g.

flue liners, connecting flue pipes, are not covered by this document.

This document also specifies the provisions for marking, manufacturers’ instruction, product

information, Assessment and Verification of Constancy of Performance (AVCP).
This document does not specify issues for electrical parts.
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SIST EN 16475-4:2020
EN 16475-4:2020 (E)
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 1443:2019, Chimneys — General requirements
EN 1561, Founding — Grey cast irons
EN 1563, Founding — Spheroidal graphite cast irons

EN 1856-1, Chimneys — Requirements for metal chimneys — Part 1: System chimney products

EN 1856-2:2009, Chimneys — Requirements for metal chimneys — Part 2: Metal flue liners and connecting

flue pipes

EN 13384-1, Chimneys — Thermal and fluid dynamic calculation methods — Part 1: Chimneys serving one

heating appliance

EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification

using data from reaction to fire tests
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 1443, EN 1856-1 and EN 1856-2

and the following apply.
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp/ui
3.1
flue damper

device used to close or partially close the flue, comprising a rotating or sliding flue damper flap, including

fastening elements, in a flue damper housing that may be a section of connecting flue pipe or a section of

chimney (single or multi wall)
Note 1 to entry: Examples given in Annex D.
3.2
shut-off slide
flue damper type 1

flue damper which is intended to prevent the escape of dust out of the chimney during sweeping the

chimney
3.3
internal leakage rate
leakage rate inside the flue caused by the closed flap
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SIST EN 16475-4:2020
EN 16475-4:2020 (E)
3.4
external leakage rate
leakage rate from the inside of the component to the outside atmosphere
Note 1 to entry: Corresponds to the leakage rate of EN 1443:2019, Table 3.
4 Product characteristics
4.1 General
4.1.1 Introduction

In order to identify the characteristics of the flue damper the following product properties shall be

declared:
4.1.2 Temperature classes

The temperature class shall be declared in accordance with EN 1443:2019, Table 1.

4.1.3 Pressure classes
The pressure class shall be in accordance with EN 1443:2019, Table 3.
4.1.4 Condensate resistance classes
The condensate resistance class shall be in accordance with EN 1443:2019, 4.2.3.
4.1.5 Corrosion resistance classes
Corrosion resistance classes shall be in accordance with EN 1443:2019, Table 4.
4.1.6 Sootfire resistance classes
Sootfire resistance class shall be in accordance with EN 1443:2019, 4.2.5.
4.1.7 Distance to combustible material

The minimum allowed distance of the outer wall of the flue damper to walls and floors comprising

combustible material shall be expressed as “xx”, where “xx” is the value in whole millimetres, followed

with a letter “a” to “l” in accordance with EN 1443:2019, 4.2.6.
4.1.8 Flue damper type
The flue damper type shall be in accordance with Table 1.
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SIST EN 16475-4:2020
EN 16475-4:2020 (E)
Table 1 — Flue damper types
Flue Type description Condensate Pressure class Field of application
damper resistance class
type
D W N P/M/H
Totally closed manually Solid fuel manually
1 X — X —
driven fed without fan
All applications
Totally closed except solid fuel
2 X X X X
mechanically driven manually fed
without fan
Partially closed
Solid fuel manually
3 adjustable manually X — X —
fed without fan
driven
All applications
Partially closed
except solid fuel
4 adjustable X X X X
manually fed
mechanically driven
without fan
All applications
Partially closed except solid fuel
5 X X X X
fixed manually driven manually fed
without fan

opening according to national regulations or manufacturer's instructions or other standards (e.g.

EN 16510-1)
NOTE 'X' means 'applies to this flue damper type'.
4.2 Safety in the case of fire
4.2.1 Reaction to fire

The reaction to fire indicates the degree of contribution of the material to the behaviour of the

construction product in the event of fire. When tested in accordance to the test methods given in

EN 13501-1, relevant for the claimed class, the test results are expressed as a class according to

EN 13501-1.

Whether products covered by this document are made from one or more of the materials that have been

considered, under established conditions, as belonging to the category “No contribution to fire” because

of their low level of combustibility, the reaction to fire class A1 applies to these products without the need

of carrying out reaction to fire tests.
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SIST EN 16475-4:2020
EN 16475-4:2020 (E)
4.2.2 Fire resistance internal to external

Fire resistance internal to external is the capability of the flue damper to prevent a fire at adjacent

combustible materials caused by the chimney operation under:

— normal operating condition for the declared temperature class (see 4.1.2) and pressure class (see

4.1.3), and

— sootfire condition for products declared sootfire-resistant (G) or sootfire safe (As) (see 4.1.6),

taking into account the minimum allowed distance to combustible material (xx) in relation to the test

assembly corresponding to the walls and floors of a variety of building types and the thermal resistance

of their structure (see 4.1.7).
When tested according to the test method described in 5.3.3.2:
— the external gas tightness shall comply with 4.3.1 before and after the test;

— the maximum temperature of adjacent combustible materials shall not exceed 85 °C when related to

an ambient temperature of 20 °C at the distance declared by the manufacturer when tested at the

declared temperature class.
When tested according to the test method described in 5.3.3.3:
— the external gas tightness shall comply with 4.
...

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