prEN 1364-5
(Main)Fire resistance tests for non-loadbearing elements - Part 5: Air transfer grilles
Fire resistance tests for non-loadbearing elements - Part 5: Air transfer grilles
This document specifies a method for determining the fire resistance of air transfer grilles (ATG).
It is applicable to air transfer grilles intended for installation in building components (typically walls, floors or ceilings). The orientation of the installation of the air transfer grille can be vertical or horizontal.
The closing mechanism of the air transfer grille can come from expansion of material and/or from any mechanical or electrical closing device.
This test method is valid for fire resistant or fire resistant and smoke control air transfer grilles.
An additional test configuration is valid for fire resistant or fire resistant and smoke control air transfer grilles in applications where flame impingement is a risk during open state from start of fire (Annex A).
This test method evaluates the behaviour of the air transfer grille when exposed to the standard fire curve described in EN 1363 1 and the standard pressure described in EN 1363 1. It is not the intention of this test to provide quantitative information on the rate of leakage of smoke and/or hot gases or on the transmission or generation of fumes under fire conditions. Such phenomena are only noted in describing the general behaviour of test specimens during the test.
The rate of leakage of smoke at ambient temperature or at 200 °C as an optional requirement for ATG with declared smoke control will be confirmed in accordance with EN 1634 3.
This test method is not valid for determining the fire resistance of air transfer grilles that are used in ducts because ATG are considered as separating elements. The test method for ATG, used in ducts is described in the corresponding duct standards.
This test method is not valid for determining the fire resistance of a fire damper or a fire barrier connected to a duct on either or both sides because an ATG is tested as a fire-separating element on its own. Fire dampers are tested according to EN 1366 2. Non-mechanical fire barriers are tested according to EN 1366 12.
This test method is not valid for determining the fire resistance of air transfer grilles in fire doors, shutters and openable windows as specified in EN 1634 1 and EN 1364 2, because the deformation of fire doors, shutters and openable windows in fire conditions differs from the deformation of flexible/rigid walls. Moreover, the location of thermocouples in the door standard is too specific to be handled in this document.
All values given in this document are nominal unless otherwise specified.
Feuerwiderstandsprüfungen für nichttragende Bauteile - Teil 5: Lüftungsbausteine
Dieses Dokument legt ein Prüfverfahren zur Bestimmung des Feuerwiderstands von Lüftungsbausteinen (LB) fest.
Es gilt für Lüftungsbausteine zum Einbau in Gebäudeteile (typischerweise Wände, Decken oder Unterdecken). Der Einbau der Lüftungsbausteine kann vertikal oder horizontal erfolgen.
Der Schließmechanismus der Lüftungsbausteine kann auf der Ausdehnung der Baustoffe und/oder auf jeglichen mechanischen oder elektrischen Schließvorrichtungen beruhen.
Das hier beschriebene Prüfverfahren gilt für feuerwiderstandsfähige Lüftungsbausteine sowie für Lüftungsbausteine mit Feuerwiderstands- und Rauchschutzeigenschaften.
Für feuerwiderstandsfähige Lüftungsbausteine bzw. für Lüftungsbausteine mit Feuerwiderstands- und Rauchschutzeigenschaften gilt eine zusätzliche Prüfkonfiguration für Anwendungsfälle, in denen die Gefahr der Flammenbeaufschlagung während des offenen Zustandes zu Beginn der Prüfung besteht (Anhang A).
Mit dem Prüfverfahren wird das Verhalten von Lüftungsbausteinen bei Beanspruchung durch die Norm-Brandkurve nach EN 1363 1 und den Normdruck nach EN 1363 1 bewertet. Diese Prüfung ist nicht dafür vorgesehen, quantitative Angaben zur Leckrate von Rauch und/oder heißen Gasen oder zur Übertragung oder Erzeugung von Rauch unter Brandbedingungen zu liefern. Derartige Phänomene werden lediglich im Zusammenhang mit der Beschreibung des allgemeinen Verhaltens der Probekörper während der Prüfung aufgezeichnet.
Die Leckrate von Rauch bei Umgebungstemperatur bzw. bei 200 °C als optionale Anforderung für Lüftungsbausteine mit erklärten Rauchschutzeigenschaften wird nach EN 1634 3 bestätigt.
Das hier beschriebene Prüfverfahren gilt nicht für die Bestimmung des Feuerwiderstands von Lüftungsbausteinen, die in Kanälen/Schächten eingesetzt werden, da Lüftungsbausteine als raumabschließende Bauteile betrachtet werden. Das Prüfverfahren für Lüftungsbausteine zur Anwendung in Kanälen/Schächten wird in den entsprechenden Normen zu den Kanälen/Schächten beschrieben.
Das Prüfverfahren gilt nicht für die Bestimmung des Feuerwiderstandes von Brandschutzklappen oder Brandschutzverschlüssen, die an einer Seite oder an beiden Seiten mit einem Kanal/Schacht verbunden sind, da Lüftungsbausteine separat als raumabschließende Elemente geprüft werden. Brandschutzklappen werden nach EN 1366 2 geprüft. Nichtmechanische Brandschutzverschlüsse für Lüftungsleitungen werden nach EN 1366 12 geprüft.
Das Prüfverfahren gilt nicht für die Bestimmung des Feuerwiderstands von Lüftungsbausteinen in Brandschutztüren, Abschlüssen und zu öffnenden Fenstern nach EN 1634 1 bzw. EN 1364 2, da die Verformung von Brandschutztüren, Abschlüssen und zu öffnenden Fenstern unter Brandbedingungen von der Verformung von Wänden in Leicht- bzw. Massivbauweise abweicht. Darüber hinaus sind die Angaben zur Anordnung der Thermoelemente in der türbezogenen Norm zu spezifisch, um im vorliegenden Dokument behandelt werden zu können.
Falls nichts anderes festgelegt ist, sind sämtliche in diesem Dokument angegebenen Werte Nennwerte.
Essais de résistance au feu des éléments non porteurs - Partie 5 : Grilles de transfert
Ce document spécifie une méthode pour déterminer la résistance au feu des grilles de transfert d'air (ATG).
Elle s'applique aux grilles de transfert d'air destinées à être installées dans des éléments de construction (généralement des murs, des planchers ou des plafonds). L'orientation de l'installation de la grille de transfert d'air peut être verticale ou horizontale.
Le mécanisme de fermeture de la grille de transfert d'air peut provenir de l'expansion du matériau et/ou de tout dispositif de fermeture mécanique ou électrique.
Cette méthode d'essai est valable pour les grilles de transfert d'air résistantes au feu ou résistantes au feu et au désenfumage.
Une configuration d'essai supplémentaire est valable pour les grilles de transfert d'air résistantes au feu ou résistantes au feu et de désenfumage dans les applications où il y a un risque de projection de flammes à l'état ouvert dès le début de l'incendie (annexe A).
Cette méthode d'essai évalue le comportement de la grille de transfert d'air lorsqu'elle est exposée à la courbe d'incendie standard décrite dans la norme EN 1363 1 et à la pression standard décrite dans la norme EN 1363 1. Cet essai n'a pas pour but de fournir des informations quantitatives sur le taux de fuite de fumée et/ou de gaz chauds ou sur la transmission ou la génération de fumées dans des conditions d'incendie. Ces phénomènes ne sont pris en compte que dans la description du comportement général des éprouvettes pendant l'essai.
Le taux de fuite des fumées à la température ambiante ou à 200 °C en tant qu'exigence facultative pour les ATG avec contrôle déclaré des fumées sera confirmé conformément à la norme EN 1634 3.
Cette méthode d'essai n'est pas valable pour déterminer la résistance au feu des grilles de transfert d'air utilisées dans les gaines, car les ATG sont considérées comme des éléments de séparation. La méthode d'essai pour les grilles de transfert d'air utilisées dans les gaines est décrite dans les normes correspondantes relatives aux gaines.
Cette méthode d'essai n'est pas valable pour déterminer la résistance au feu d'un clapet coupe-feu ou d'une barrière coupe-feu raccordé(e) à un conduit d'un côté ou des deux côtés, parce qu'un ATG est testé en tant qu'élément de séparation du feu à part entière. Les clapets coupe-feu sont testés conformément à la norme EN 1366 2 et les barrières coupe-feu non mécaniques conformément à la norme EN 1366 12.
Cette méthode d'essai n'est pas valable pour déterminer la résistance au feu des grilles de transfert d'air dans les portes coupe-feu, les volets et les fenêtres ouvrantes, comme spécifié dans les normes EN 1634 1 et EN 1364 2, car la déformation des portes coupe-feu, des volets et des fenêtres ouvrantes dans des conditions d'incendie diffère de la déformation des murs flexibles/rigides. En outre, l'emplacement des thermocouples dans la norme relative aux portes est trop spécifique pour être traité dans le présent document.
Toutes les valeurs indiquées dans ce document sont nominales, sauf indication contraire.
Preskusi požarne odpornosti nenosilnih elementov - 5. del: Prezračevalne rešetke
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2025
Preskusi požarne odpornosti nenosilnih elementov - 5. del: Prezračevalne rešetke
Fire resistance tests for non-loadbearing elements - Part 5: Air transfer grilles
Feuerwiderstandsprüfungen für nichttragende Bauteile - Teil 5: Lüftungsbausteine
Essais de résistance au feu des éléments non porteurs - Partie 5 : Grilles de transfert
Ta slovenski standard je istoveten z: prEN 1364-5
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.060.99 Drugi stavbni elementi Other elements of buildings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2025
ICS 13.220.50; 91.060.99 Will supersede EN 1364-5:2017
English Version
Fire resistance tests for non-loadbearing elements - Part 5:
Air transfer grilles
Essais de résistance au feu des éléments non porteurs - Feuerwiderstandsprüfungen für nichttragende
Partie 5 : Grilles de transfert Bauteile - Teil 5: Lüftungsbausteine
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 127.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1364-5:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test equipment . 7
5 Test conditions . 7
5.1 Heating conditions . 7
5.2 Pressure conditions . 7
6 Test specimen . 8
6.1 General. 8
6.2 Size . 8
6.3 Number . 8
6.4 Design . 9
6.5 Construction . 9
6.6 Verification . 9
7 Installation of test specimen . 9
7.1 General. 9
7.2 Supporting constructions . 9
8 Conditioning . 10
9 Application of instrumentation . 10
9.1 Thermocouples . 10
9.2 Pressure . 12
9.3 Radiation . 12
9.4 Other equipment . 12
10 Test procedure . 12
11 Performance criteria . 12
11.1 General. 12
11.2 Integrity . 12
11.3 Insulation . 13
12 Test report . 13
13 Direct field of application of test results . 15
13.1 General. 15
13.2 Orientation . 15
13.3 Position . 15
13.4 Number . 16
13.5 Supporting construction . 16
14 Figures . 17
Annex A (normative) Test configuration for immediate heat exposure . 24
A.1 Use of this annex . 24
A.2 Principle of removable shield configuration . 24
A.3 Removable shield . 24
A.4 Test procedure amendments for this test configuration . 24
Bibliography . 27
European foreword
This document (prEN 1364-5:2025) has been prepared by Technical Committee CEN/TC 127 “Fire safety
in buildings”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
EN 1364 ‘Fire resistance tests for non-loadbearing elements’ consists of the following parts:
— Part 1: Walls
— Part 2: Ceilings
— Part 3: Curtain walling - Full configuration (complete assembly)
— Part 4: Curtain walling - Part configuration
— Part 5: Air transfer grilles
— Part 6: Cavity Barriers
Introduction
The purpose of this test is to measure the ability of a representative specimen of an air transfer grille to
resist the spread of fire from one side to another.
A representative sample of the air transfer grille is exposed to a specified regime of heating and the
performance of the test specimen is monitored on the basis of criteria given in this document. Fire
resistance of the test specimen is expressed as the time for which the appropriate criteria have been
satisfied. The times so obtained are a measure of the adequacy of the construction in a fire but have no
direct relationship with the duration of a real fire.
CAUTION - The attention of all persons concerned with managing and carrying out this furnace testing is
drawn to the fact that fire testing can be hazardous and that there is a possibility that toxic and/or
harmful smoke and gases can be evolved during the test. Mechanical and operational hazards can also
arise during the construction of the test elements or structures, their testing and disposal of test residues.
An assessment of all potential hazards and risks to health needs to be made and safety precautions need
to be identified and provided. Written safety instructions need to be issued. Appropriate training needs
to be given to relevant personnel. Laboratory personnel need to ensure that they follow written safety
instructions at all times.
1 Scope
This document specifies a method for determining the fire resistance of air transfer grilles (ATG).
It is applicable to air transfer grilles intended for installation in building components (typically walls,
floors or ceilings). The orientation of the installation of the air transfer grille can be vertical or horizontal.
The closing mechanism of the air transfer grille can come from expansion of material and/or from any
mechanical or electrical closing device.
This test method is valid for fire resistant or fire resistant and smoke control air transfer grilles.
An additional test configuration is valid for fire resistant or fire resistant and smoke control air transfer
grilles in applications where flame impingement is a risk during open state from start of fire (Annex A).
This test method evaluates the behaviour of the air transfer grille when exposed to the standard fire curve
described in EN 1363 1 and the standard pressure described in EN 1363 1. It is not the intention of this
test to provide quantitative information on the rate of leakage of smoke and/or hot gases or on the
transmission or generation of fumes under fire conditions. Such phenomena are only noted in describing
the general behaviour of test specimens during the test.
The rate of leakage of smoke at ambient temperature or at 200 °C as an optional requirement for ATG
with declared smoke control will be confirmed in accordance with EN 1634 3.
This test method is not valid for determining the fire resistance of air transfer grilles that are used in
ducts because ATG are considered as separating elements. The test method for ATG, used in ducts is
described in the corresponding duct standards.
This test method is not valid for determining the fire resistance of a fire damper or a fire barrier
connected to a duct on either or both sides because an ATG is tested as a fire-separating element on its
own. Fire dampers are tested according to EN 1366 2. Non-mechanical fire barriers are tested according
to EN 1366 12.
This test method is not valid for determining the fire resistance of air transfer grilles in fire doors, shutters
and openable windows as specified in EN 1634 1 and EN 1364 2, because the deformation of fire doors,
shutters and openable windows in fire conditions differs from the deformation of flexible/rigid walls.
Moreover, the location of thermocouples in the door standard is too specific to be handled in this
document.
All values given in this document are nominal unless otherwise specified.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 1363-1, Fire resistance tests — Part 1: General Requirements
EN 1363-2, Fire resistance tests — Part 2: Alternative and additional procedures
EN ISO 13943, Fire safety — Vocabulary (ISO 13943)
3 Terms and definitions
For the purposes of this document, the definitions given in EN 1363-1, EN 1363-2 and EN ISO 13943,
together with the following, apply.
3.1
air transfer grille
device consisting of an active/reactive part which could include a decorative cover as to be used in
practice, allowing movement of air at ambient temperature and pressure and providing fire resistance in
case of fire
3.2
air transfer grille flow zone
total visible surface area of the air transfer grille which allows air to flow from one side to the other (this
excludes the air transfer grille frame)
3.3
air transfer grille face
total surface area of the air transfer grille in its non-installed state (this includes any air transfer grille
frame)
3.4
aperture
opening in the supporting construction in which the air transfer grille is installed and sealed off towards
the supporting construction
3.5
modular air transfer grilles
air transfer grilles that can be fitted together to form a larger ATG unit
3.6
decorative cover
element which is not a part of the air transfer grille but may form part of the assembly achieving the fire
resistance performance
3.7
sustained flaming
continuous flaming for a period of time longer than 10 s
3.8
notional floor level
assumed floor level relative to the position of the building element in service
4 Test equipment
See EN 1363-1 and, if applicable, EN 1363-2.
5 Test conditions
5.1 Heating conditions
The heating conditions and the furnace atmosphere shall conform to those given in EN 1363-1 or, if
applicable, EN 1363-2.
5.2 Pressure conditions
Pressure conditions and tolerances shall be as given in EN 1363-1.
Depending on the field of application, air transfer grilles installed in vertical supporting constructions
can be tested in the positive or negative pressure zone. If the grille is intended for both zones, both
scenarios should be tested.
If both tests are done in 1 set-up, the pressure level in the furnace will be organized such that the neutral
pressure plane is situated between the specimens to be tested in a negative and positive pressure zone.
The height of the neutral pressure plane in the furnace will therefore be adjusted according to the tested
specimen.
Air transfer grilles installed in horizontal supporting constructions are always considered as being
positioned in the positive pressure zone. For ATG installed in a horizontal separating element, the
pressure shall be controlled to (20 ± 3) Pa at 100 mm below the underside of the separating element to
which it is fixed.
The pressure during the test at the top and at the bottom of the ATG will be calculated and reported in
the test report and in the classification report. Also the corresponding height above notional floor level
of top and bottom of the ATG shall be reported.
NOTE The laboratories aim to achieve the specified pressures as soon as possible after commencement of the
test. However, it could happen that in case of some test configuration, high pressure at the beginning of the test
could be faced.
6 Test specimen
6.1 General
The test specimen consists of an air transfer grille together with a supporting construction. In cases
where multiple test specimens are included in a single test construction, they shall be the subject of a
separate evaluation.
6.2 Size
The test specimen shall be normally full size.
If modular air transfer grilles are tested, the largest assembly size shall be tested.
In order to avoid boundary effects, the distance between the perimeter of the air transfer grille and the
internal surfaces of the furnace shall be not less than 200 mm at any point.
In cases where multiple test specimens are included in a single test construction, the minimum distance
between adjacent air transfer grilles shall be not less than 200 mm. However, if a specific installation
requires smaller distance, then ATG shall be tested to the minimum separation used in practice.
6.3 Number
For grilles installed in vertical supporting constructions, the number of test specimens required is given
in EN 1363-1.
For horizontal separating elements, only one test specimen is required with fire exposure from the
underside.
For grilles that are not symmetrical, each side has to be tested.
Where an air transfer grille is intended for use both in floors and walls, the ATG shall be tested both
vertically and horizontally.
6.4 Design
6.4.1 General
The test specimen shall be fully representative of the air transfer grille used in practice, including any
special features which are unique to the grille, e.g. decorative covers.
Each shape (e.g. circular, rectangular) with maximum dimensions has to be tested, to give widest
application according to the field of direct application (Clause 13).
6.4.2 Restraint
The edges of the test specimen shall be restrained as in practice. The method of restraining the air
transfer grille is considered part of the test specimen.
6.5 Construction
The test specimen shall be constructed as described in EN 1363-1.
6.6 Verification
Verification of the test specimen shall be carried out as described in EN 1363-1.
7 Installation of test specimen
7.1 General
The test specimen shall be installed, as far as possible, in a manner representative of the use in practice.
Inclusion of decorative covers: Where decorative covers are to be supplied with the air transfer grille and
installed symmetrically, testing of the air transfer grille shall also include the decorative covers as part of
the test specimen. If the decorative cover will be installed non symmetrically, a test of the decorative
cover inside and outside the fire shall be required.
7.2 Supporting constructions
7.2.1 General
The standard supporting constructions given in EN 1363-1 apply.
The supporting construction chosen for the test may be a non-standard support construction. However,
the result is then only applicable to this non-standard support construction.
7.2.2 Walls
For air transfer grills intended to be installed in walls, the following supporting constructions described
in EN 1363-1 apply:
— High density rigid construction;
— Low density rigid construction;
— Flexible construction;
— Non-standard supporting construction.
7.2.3 Floors
For air transfer grilles intended to be installed in floors, the following supporting constructions described
in EN 1363-1 apply:
— High density rigid construction;
— Low density rigid construction;
— Non-standard supporting construction.
NOTE Suspended ceilings described in EN 1364-2, are non-standard supporting constructions.
8 Conditioning
The test construction shall be conditioned in accordance with EN 1363-1.
9 Application of instrumentation
9.1 Thermocouples
9.1.1 Furnace thermocouples (plate thermometers)
Plate thermometers shall be provided in accordance with EN 1363-1. There shall be at least one for every
1,5 m of the exposed surface area of the test construction. Plate thermometers shall be oriented so that
side 'A' faces the back wall of the furnace for vertical test constructions and shall be oriented so that side
'A' faces the floor of the furnace for horizontal test constructions.
At the commencement of the test the furnace shall include minimum 3 thermometers irrespective of the
size of the test construction.
9.1.2 Unexposed surface thermocouples
9.1.2.1 General
Several thermocouples shall be placed in order to determine the insulation criteria of the specimen. It is
specified in EN 1364-1 that no thermocouples are positioned on discrete areas of less than 0,1 m . For air
transfer grilles this would imply that grilles could be classified (I) without having any thermocouples
positioned. Additional thermocouples are therefore required for this document as described in the
following. This implies that all rules regarding thermocouple positioning according to EN 1363-1 and
EN 1364-1 are followed but with additional thermocouples as detailed in 9.1.2.2 in this document.
Unexposed surface temperature measurements shall be made using thermocouples in accordance with
EN 13
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...