SIST EN 15882-2:2022

SLOVENSKI STANDARD
01-november-2022
Nadomešča:
SIST EN 15882-2:2015
Razširjena uporaba rezultatov preskusov požarne odpornosti servisnih inštalacij -
2. del: Požarne lopute
Extended application of results from fire resistance tests for service installations - Part 2:
Fire dampers
Erweiterter Anwendungsbereich der Ergebnisse aus Feuerwiderstandsprüfungen für
Installationen - Teil 2: Brandschutzklappen
Application étendue des résultats des essais de résistance au feu des installations de
service - Partie 2 : Clapets résistant au feu
Ta slovenski standard je istoveten z: EN 15882-2:2022
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.060.40 Dimniki, jaški, kanali Chimneys, shafts, ducts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15882-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 13.220.99 Supersedes EN 15882-2:2015
English Version
Extended application of results from fire resistance tests
for service installations - Part 2: Fire dampers
Application étendue des résultats des essais de Erweiterter Anwendungsbereich der Ergebnisse aus
résistance au feu des installations de service - Partie 2 : Feuerwiderstandsprüfungen für Installationen - Teil 2:
Clapets résistant au feu Brandschutzklappen
This European Standard was approved by CEN on 15 August 2022.

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, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15882-2:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Test requirements for assessment of design changes and modification of the
manufacturing process . 7
4.1 General. 7
4.2 Design and manufacturing changes . 7
4.2.1 Pre-test . 7
4.2.2 Fire test . 8
4.2.3 Extended field of application . 8
4.3 Actuators, remote triggering devices, actuating mechanisms, fusible links and sensing
elements . 8
4.3.1 Actuators . 8
4.3.2 Actuators with an associated thermal element device that controls the action of the
actuator to close the fire damper in the event of fire . 9
4.3.3 Remote triggering device (e.g. magnet) . 10
4.3.4 Actuating mechanism . 10
4.3.5 Fusible links and elements (not associated with the actuator supplier) . 11
5 Determination of worst case . 12
6 Conditions and application rules . 13
6.1 Change of fixing damper to supporting construction . 13
6.2 Multiple damper assemblies . 13
6.2.1 E Classification only . 13
6.2.2 EI, E-S, EI-S classifications . 15
6.2.3 Field of application . 15

6.3 Alternative penetration seals . 16
7 Influence of parameters and factors on fire damper performance . 16
8 Critical parameters and factors . 16
8.1 General. 16
8.2 Common operational parameters and factors . 17
9 Constructional parameters . 17
9.1 General. 17
9.2 Parameters of components of damper . 18
9.3 Parameters for installation . 19
10 Methodology . 19
11 Extended field of application report . 42
Bibliography . 45

European foreword
This document (EN 15882-2:2022) has been prepared by Technical Committee CEN/TC 127 “Fire safety
in buildings”, the secretariat of which is held by BSI.
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 March 2023, and conflicting national standards shall be
withdrawn at the latest by March 2023.
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 EN 15882-2:2015.
In comparison with the previous edition, the following technical modifications have been made:
— Clause 4 was expanded and re-titled “Test requirements for assessment of design changes and
modification of the manufacturing process”. This defines options for EXAP where changes are
proposed, what needs to be done pre-test, fire tests that need to be done etc. This is supported by the
new rule X.65 where such changes are proposed.
— Provisions on how to handle the replacement or new actuators, operating mechanisms and fusible
elements have become more detailed. Further support is also given in the rules.
— Clause 5 now details more comprehensively the selection of the worst case.
— Clause 6 now contains more details on hangers and fixing flanges and on the testing of multiple units.
It also covers the use of alternative penetration seals.
— The rules are similar (some are new, some changed); the numbering changed.
— Changes were made with respect to the use of different materials (particularly stainless steels) and
the positioning of flanges, brackets etc.
EN 15882, Extended application of results from fire resistance tests for service installations, consists of the
following parts:
— Part 1: Ducts
— Part 2: Fire dampers
— Part 3: Penetration seals
— Part 4: Linear joint seals
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the United
Kingdom.
Introduction
It should be noted that fire resisting dampers are special products that are exposed to different conditions
than other elements of construction; in particular they are subjected to significantly different pressure
regimes. Integrity is also evaluated through leakage measurements. Consequently, this document may
adopt a different approach to other extended field of application standards, with more emphasis on
testing.
Some rule references and content have changed from the previous version of this document and some
conclusions to the previous version may not be acceptable in the light of this new information.

1 Scope
This document provides guidance and rules to notified bodies (for fire dampers) allowing them to
produce/validate an extended field of application report for fire dampers based on testing undertaken in
accordance with EN 1366-2. This document identifies the parameters that affect the fire resistance of fire
dampers. It also identifies the factors that need to be considered when deciding whether, or by how much,
the parameter can be extended when contemplating the fire resistance performance of an untested, or
untestable variation in the construction.
This document explains the principles behind how a conclusion on the influence of specific
parameters/constructional details relating to the relevant criteria (E, I, S) can be achieved.
This document does not cover dampers used for smoke control or non-mechanical fire barriers.
It is the intention that the application of this document makes it possible to identify which specifications
to test to maximize the field of application. Some information on test programmes is given for guidance
purposes.
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 1751, Ventilation for buildings - Air terminal devices - Aerodynamic testing of damper and valves
EN 1363-1, Fire resistance tests - Part 1: General requirements
EN 1366-1, Fire resistance tests for service installations — Part 1: Ventilation ducts
EN 1366-2, Fire resistance tests for service installations - Part 2: Fire dampers
EN 1366-3, Fire resistance tests for service installations - Part 3: Penetration seals
EN 13501-3, Fire classification of construction products and building elements — Part 3: Classification
using data from fire resistance tests on products and elements used in building service installations: fire
resisting ducts and fire dampers
EN 15882-1, Extended application of results from fire resistance tests for service installations — Part 1:
Ducts
EN 15650:2010, Ventilation for buildings - Fire dampers
ISO 21925-1, Fire resistance tests — Fire dampers for air distribution systems — Part 1: Mechanical
dampers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1363-1, EN 1366-2, EN 15650
and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
multiple damper assembly
assembly of several individual fire damper units arranged next to each other, or above each other, to form
a larger unit
3.2
horizontal
orientation/position of the damper mounted in a horizontal plane
EXAMPLE When installed in the plane of a floor or a ceiling.
3.3
vertical
orientation/position of the damper mounted in a vertical plane
EXAMPLE When installed in the plane of a wall.
3.4
supporting construction
construction used as part of the test assembly to support the test specimen and to fill in the furnace
aperture
3.5
standard supporting construction
supporting construction that has known fire behaviour (as described in EN 1363-1) and for which a direct
field of application has been established
4 Test requirements for assessment of design changes and modification of the
manufacturing process
4.1 General
Many manufacturers will want to introduce manufacturing changes to make use of differing production
techniques, whilst essentially keeping a product the same. In addition, they may wish, for example, to
change actuators and activating mechanisms, sometimes across a range of product models.
The test methods described in the following subclauses shall not be used to develop the application to
other supporting constructions and installation methods in those supporting constructions.
4.2 Design and manufacturing changes
4.2.1 Pre-test
Before any fire testing is undertaken the relevant cycle tests and leakage tests at ambient temperatures
shall be undertaken to prove the durability of the proposed change in accordance with EN 15650.
4.2.2 Fire test
The effect of design and manufacturing changes on the declared performances of essential characteristics
of the fire damper shall be proven by fire testing the fire damper in a previously tested supporting
construction and using the same installation method.
The supporting construction shall be the lightest in terms of mechanical stability that the fire damper was
previously tested in (e.g. dry wall versus solid masonry etc.). The fire damper shall be presented to the
test from the direction of the worst result obtained in previous testing or, if this is not clear from previous
test evidence, then with the actuator inside the furnace.
4.2.3 Extended field of application
Having passed the fire test in 4.2.2, the fire damper shall have the ability to be used for all other existing
classifications with an equal or lower classification time for the same supporting construction using any
already tested installation methods.
This is also allowed for all its other existing models with classifications with equal or lower classification
times in heavier supporting constructions with their different installation methods in accordance with
the existing direct field of application.
4.3 Actuators, remote triggering devices, actuating mechanisms, fusible links and
sensing elements
4.3.1 Actuators
4.3.1.1 General
If the fire damper assembly is a new design, previously untested, this section does not apply, and the fire
damper shall be tested fitted with the actuator in accordance with EN 1366-2 from both sides.
If the fire damper assembly has not been previously tested from both sides using an actuator/mechanism
etc, then this section does not apply until the fire damper assembly has been tested with the actuator in
accordance with EN 1366-2 from both sides.
When either of the above have been successfully tested the following may be applied.
All the following shall be undertaken in the order shown.
Actuator models with different voltages (e.g. 24 V, 230 V or multi-voltage) are considered to have no
influence on fire safety. Just one voltage needs to be tested. In the case of multi-voltage any voltage may
be tested.
4.3.1.2 Fire damper ambient cycle test
At least one sample of the fire damper assembly with the proposed new actuator shall be subjected to an
ambient cycle test.
The minimum number of cycles performed shall correspond to the expected application as shown in
EN 15650.
If different motive powers are proposed, then an actuator with each motive power level shall be subjected
to the cycle tests.
4.3.1.3 Confirmatory acceptance fire test
At least one sample (different to those in 4.3.1.2) of the proposed new actuator shall be subjected to a fire
test in accordance with EN 1366-2 on a previously tested fire damper obtained from the fire damper
manufacturer, installed in the lightest wall construction (generally lightweight metal stud partition with
one board on each side as the worst case).
In cases of insulated fire dampers (with an EI classification), the actuator shall be positioned inside the
furnace. With only E classification dampers, two units shall be tested; one mounted on an E classification
fire damper inside the furnace and one mounted on an E classification fire damper outside the furnace.
Successful completion of a fire test on E classification fire dampers will allow use on EI classification fire
dampers.
To avoid confusion, even if the fire damper has the actuator mounted on the centre line, the product shall
be tested from both sides in the case of E or EI classification dampers.
In each case the fire damper shall perform at least as well, with regard to its classification times, as it did
in the same test previously. Tests performed on a vertically mounted fire damper will be applicable to
horizontally mounted fire dampers and vice versa.
4.3.1.4 Field of application
Provided all the above are fulfilled in order, the actuator may be fitted by the fire damper manufacturer
on tested families and series of fire damper. This shall apply to all tested installations and applications.
4.3.2 Actuators with an associated thermal element device that controls the action of the
actuator to close the fire damper in the event of fire
4.3.2.1 General
If the fire damper assembly is a new design, not previously tested, this section does not apply, and the
fire damper shall be tested fitted with the associated actuator in accordance with EN 1366-2 from both
sides.
If the fire damper assembly has not been previously tested from both sides using an actuator with
associated thermal element device then this section does not apply until the fire damper assembly has
been tested with the associated actuator in accordance with EN 1366-2 from both sides.
When either of the above have been successfully tested, the following may be applied.
All the following shall be undertaken in the order shown.
Actuator models with different voltages (e.g. 24 V, 230 V or multi-voltage) are considered to have no
influence on fire safety. Just one voltage needs to be tested. In the case of multi-voltage any voltage may
be tested.
4.3.2.2 Fire damper ambient cycle test
As in 4.3.1.2.
4.3.2.3 Confirmation of the thermal element device
The thermal element device shall pass the requirements of ISO 21925-1 (previously in ISO 10294-4 as
originally referenced in EN 15650).
4.3.2.4 Confirmatory acceptance fire test
As in 4.3.1.3.
If only the design of a thermal element device has been changed, conformity with 4.3.1.2 shall be fulfilled
without additional fire testing.
4.3.2.5 Field of application
Provided all the above are fulfilled in order, the actuator with the thermal element device may be fitted
by the fire damper manufacturer on tested families and series of fire damper. This shall apply to all tested
installations and applications.
4.3.3 Remote triggering device (e.g. magnet)
4.3.3.1 General
In all cases fire dampers must have a thermal element device. This section covers any additional remote
mechanical triggering device.
If the fire damper is a new product, not previously tested, this section does not apply, and the fire damper
shall be tested fitted with an associated remote triggering device in accordance with EN 1366-2, from
both sides.
If the fire damper has not been previously tested from both sides using an associated remote triggering
device, then this section does not apply until the fire damper has been tested in accordance with
EN 1366-2 from both sides.
When either of the above have been successfully tested the following may be applied.
All the following shall be undertaken in the order shown.
4.3.3.2 Fire damper ambient cycle test
At least one sample of the fire damper assembly with the proposed new remote triggering device shall be
subjected to an ambient cycle test.
The minimum number of cycles performed shall correspond to the expected application as shown in
EN 15650.
4.3.3.3 Confirmatory acceptance fire test
At least two samples (different from 4.3.3.2) of the fire damper with the proposed new remote triggering
device shall be subjected to a fire test in accordance with EN 1366-2 on a previously tested fire damper
obtained from the fire damper manufacturer in the lightest wall construction (generally lightweight metal
stud partition with one board on each side as the worst case).
Two units shall be tested; one with new remote triggering device mounted inside the furnace and one
with the new remote triggering device mounted outside the furnace.
To avoid confusion, even if the fire damper has the new remote triggering device mounted on the centre
line, the product shall still be tested from both sides.
In each case the fire damper shall perform at least as well as it did in the same test previously. Tests
performed on a vertically mounted fire damper will be applicable to horizontally mounted fire dampers
and vice versa.
4.3.3.4 Field of application
Provided all the above are fulfilled in order, the new remote triggering device may be fitted by the fire
damper manufacturer on tested families and series of fire damper. This shall apply to all tested
installations and applications.
4.3.4 Actuating mechanism
4.3.4.1 General
The actuating mechanism is the connection mechanism between the actuator and/or remote release
mechanism and the damper blade. Modification may be made for different reasons (e.g. to simplify the
construction or change mechanical advantage).
If the fire damper assembly is a new product, previously untested, this section does not apply, and the
fire damper assembly shall be tested in accordance with EN 1366-2 from both sides.
If the fire damper assembly has not been previously tested from both sides, then this section does not
apply until the fire damper assembly has been tested in accordance with EN 1366-2 from both sides.
When either of the above have been successfully tested the following may be applied.
All the following shall be undertaken in the order shown.
4.3.4.2 Fire damper ambient cycle test
At least one sample of the fire damper assembly with the proposed new actuating mechanism shall be
subjected to an ambient cycle test in each orientation proposed (e.g. horizontal and/or vertical).
The minimum number of cycles performed shall correspond to the expected application as shown in
EN 15650.
The mechanical advantage shall not be reduced.
If the previous actuating mechanism to be replaced does not have this data available for comparison then
the previous actuating mechanism shall be tested in this way at the same time as the proposed new
actuating mechanism to maintain consistency of testing.
4.3.4.3 Confirmatory acceptance fire test
At least two samples (different to those used 4.3.4.2 above) of the fire damper with the proposed new
actuating mechanism shall be subjected to a fire test in accordance with EN 1366-2, on a previously tested
fire damper in the lightest wall construction (generally lightweight metal stud partition with one board
on each side).
The actuator shall be mounted such that if the fastenings or pins preventing rotation fail, the weight of
the damper shall act to try and open the blades by putting an opening moment on the drive spindle to the
actuating mechanism.
Two units shall be tested, one with the actuating mechanism mounted inside the furnace and one with
the actuating mechanism mounted outside the furnace.
To avoid confusion, if the fire damper has the actuating mechanism mounted on the centre line, the
product shall still be tested from both sides.
In each case the fire damper shall perform at least as well as it did in the same test previously. Tests
performed on a vertically mounted fire damper will be applicable to horizontally mounted fire dampers
and vice versa.
4.3.4.4 Field of application
Provided all the above are fulfilled in order, the actuating mechanism may be fitted to any smaller fire
damper of the same type/family with the same or lower nominal declared torque on all the
manufacturers tested families and series of fire damper. This shall apply to all tested installations and
applications.
4.3.5 Fusible links and elements (not associated with the actuator supplier)
4.3.5.1 General
If the fire damper assembly is a new product, previously untested, this section does not apply, and the
fire damper assembly shall be tested in accordance with EN 1366-2 from both sides.
If the fire damper assembly has not been previously tested from both sides, then this section does not
apply until the fire damper assembly has been tested with the associated fusible link and element in
accordance with EN 1366-2 from both sides.
When either of the above have been successfully tested, the following may be applied.
All the following shall be undertaken in the order shown.
4.3.5.2 Fire damper ambient cycle test
At least one sample of the fire damper assembly with the proposed new fusible link or sensing element
shall be subject to an ambient cycle test. The cycles performed shall correspond to the expected
application at a minimum.
The test method shall follow the cycling tests for the expected application, as shown in EN 15650.
4.3.5.3 Confirmation of the fusible link or element
The thermal element device shall pass the requirements of ISO 21925-1 (previously in ISO 10294-4 as
originally referenced in EN 15650).
4.3.5.4 Confirmatory acceptance fire test
At least two samples (different from those in 4.3.5.2) of the fire damper with the proposed new fusible
link or sensing element shall be subjected to a fire test, in accordance with EN 1366-2, on a previously
tested fire damper in the lightest wall construction (generally lightweight metal stud partition with one
board on each side as the worst case).
Two units shall be tested, one with the fusible link or sensing element mounted inside the furnace and
one with the fusible link or sensing element mounted outside the furnace.
To avoid confusion, even if the fire damper has the fusible link or sensing element mounted on the centre
line, the product shall still be tested from both sides.
In each case the fire damper shall perform at least as well as it did in the same test previously. Tests
performed on a vertically mounted fire damper will be applicable to horizontally mounted fire dampers
and vice versa.
4.3.5.5 Field of application
Provided all the above are fulfilled in order, the fusible link or sensing element may be fitted by the fire
damper manufacturer on tested families and series of fire damper. This shall apply to all tested
installations and applications.
5 Determination of worst case
In certain circumstances a rule can call for a new test to be undertaken. To avoid having to re-test
everything, a determination shall be made of “worst case”.
Firstly, consider the classification required:
— E;
— EI;
— E-S;
— EI-S.
Consider all the test reports that give the required classification.
Determine which essential characteristic was closest to failure at the specific classification time.
The resulting worst case will be the one where the classification time of each and any of the parameters
was the closest to failure as a ratio percentage of the classification value, for example:
3 2 3 2
— E Integrity leakage − 360 m /h/m maximum allowed, 180 m /h/m maximum measured result
Ratio = 180/360 = 50 %;
— I – Insulation - ΔT 140 K maximum allowed, ΔT 135 K measured
Ratio = 135/140 = 96,5 %;
3 2 3 2
— S Reduced leakage − 200 m /h/m maximum allowed, 150 m /h/m maximum measured result
Ratio = 150/200 = 75 %.
Following the above example, Insulation I is closest to failure with a ratio of 96,5 % and this is the worst
case.
The method to determine worst case and the related extended fields of application shall be reported in
the extended field of application report.
6 Conditions and application rules
6.1 Change of fixing damper to supporting construction
No change in the location of the fixings relative to the damper and the supporting construction shall be
permitted. The pitch between the fixings shall not be increased.
Alternative fixings may be used if their performance is proven by fire test, stress, linear expansion or
loading information data. Any other information available may be considered.
Any alternative fixings shall be included as part of the extended field of application report.
Hanger and relating anchor data shall be assessed in accordance with EN 15882-1.
Support brackets/cleats may be moved vertically or horizontally but shall not be reduced in number (see
rule X.47).
6.2 Multiple damper assemblies
6.2.1 E Classification only
6.2.1.1 Method
To allow the use of multiple assemblies of E classified fire dampers, either side by side or on top of each
other, the following test shall be performed. An assembly consisting of fire dampers that have already
successfully gained a classification conforming to EN 13501-3 shall be made and installed into a
supporting construction using the proposed method.
A fire damper selected using the worst case method in accordance with Clause 5 shall be made into an
assembly as shown in Figure 1. This will allow the other EXAP rules from the tables which follow to apply
to multi-section units, as they do to single section units.
The unit to be tested shall be constructed so as to be made up of up to four sections and shall not exceed
an overall size of 2 600 mm × 2 600 mm. This is to allow for a small gap around the outside of the damper
and a minimum span of supporting construction of 200 mm all round. See Figure 1 which is applicable to
both vertical (shown) and horizontal test installations. This represents testing in a 3 m × 3 m furnace,
larger units may be tested in larger furnaces, but the 200 mm (Figure 1) rule all round must be followed.
The test method shall generally be as in EN 1366-2.
An extended open duct 1 m long shall be fixed to the dampers. Or alternatively a closed connecting duct
with a fan, to make measurements as described in EN 1366-2.
The plate thermometers for control of furnace temperature shall be placed at the centre of each fire
damper section.
Leakage shall not be measured. A 300 Pa differential pressure shall not be set across the unit.
The criteria used shall be the integrity at all of the following:
— round the joint between the damper installation and the supporting construction;
— any point within the damper assembly (joints, blades, etc.);
— sustained flaming at any point around the perimeter or at the blades or joints.
If the individual fire damper sections do not close within the first 90 s, provision shall be made to
manually close the sections after 2 min (air may be drawn into the bottom of the furnace having a cooling
effect). Wire thermocouples shall be placed at each thermal sensing element for information purposes.
This information shall be recorded.
Classification will be as with the original single section units with regard to the E classification as long as
the above integrity criteria are fulfilled.
6.2.1.2 Field of application
If, due to the size restriction of 2 600 mm × 2 600 mm, the assembly is made up of four individual units
which are smaller than or of the same size as the original single unit tested, assemblies for application
may be made of units up to the single unit size tested.
EXAMPLE 1 An assembly of four units with an overall size of 2 600 mm × 2 600 mm, made from individual units
with overall size 1 300 mm × 1 300 mm, representing a single section size tested of 1 500 mm × 1 300 mm, allows
an assembly of overall size 3 000 mm × 2 600 mm to be used.
If the assembly is made up of four or more units, leading to whatever overall size, the size of unit to be
used shall have been tested previously as a single unit. For application, the units then used to make up
assemblies shall not exceed the size of the units tested as part of the assembly. This test may not be used
to allow larger units to be back assessed to single sections for classification to EN 13501-3.
EXAMPLE 2 An assembly of six units of individual overall size 600 mm × 600 mm, giving an assembly size of
1 200 mm × 1 800 mm, allows the use of multiple assemblies of units of individual size 600 mm × 600 mm.
If the individual unit tested was 1 000 mm × 1 000 mm, the use of this to build assemblies is not now
permitted as this could have been assembled to form a unit 2 000 mm × 2 000 mm, which could be tested
(i.e. is less than 2 600 mm × 2 600 mm).
If the 600 mm × 600 mm size has not been tested individually and only a 500 mm × 500 mm unit has been
tested previously, this is not permitted and back assessment of the 500 mm × 500 mm is also not
permitted as there is no pressure differential in this EXAP test.
For dampers tested following these directions, the standard direct field of application from EN 1366-2
shall apply.
All details with respect to multiple damper assemblies, the installation methods and their associated
testing, and any direct field of application and further EXAP, shall be included in the extended application
report.
Using the information ascertained above, larger assemblies of individual dampers are permitted,
providing that they are also structurally supported to a fire-safe design provided by competent structural
engineers.
6.2.2 EI, E-S, EI-S classifications
6.2.2.1 Pre-qualification information and tests
6.2.2.1.1 Pre-qualification prior to the fire test
A single section damper of dimensions (width and height) both greater or equal to the dimensions of the
individual sections to be tested as part of the multiple damper assembly shall have been successfully
tested to EN 1366-2 using the proposed installation method. Multi-section tests shall not be back
attributable in lieu of single section tests.
6.2.2.1.2 Cycling test
Where required perform a cycling test (EN 15650:2010, Annex C) on the assembly to provide evidence
of durability and stability.
6.2.2.1.3 Ambient leakage test
Perform an ambient leakage test in accordance with EN 1366-2.
6.2.2.2 EXAP fire resistance test method
To allow the use of multiple assemblies of EI, E-S, EI-S classified fire dampers, either side by side or on
top of each other, the following test shall be performed. An assembly consisting of fire dampers that have
already successfully gained a classification conforming to EN 13501-3 shall be made and installed into a
supporting construction using the proposed method.
A fire damper selected using the worst case method in accordance with Clause 5 shall be made into an
assembly as shown in Figure 1. This will allow the other EXAP rules from the tables which follow to apply
to multi-section units, as they do to single section units.
The unit to be tested shall be constructed so as to be made up of up to four sections and shall not exceed
an overall size of 2 600 mm × 2 600 mm. This is to allow for a small gap around the outside of the damper
and a minimum span of supporting construction of 200 mm all round. See Figure 1 which is applicable to
both vertical (shown) and horizontal test installations. This represents testing in a 3 m × 3 m furnace,
larger units may be tested in larger furnaces, but the 200 mm (Figure 1) rule all round must be followed.
Fit a single connecting duct to the whole assembly and perform the complete test in accordance with
EN 1366-2. Leakage shall be measured. For rig leakage (connection duct and damper assembly with the
blades isolated) a maximum of 24 m /h is allowed. A 300 Pa differential pressure shall be set across the
unit.
The plate thermometers for control of furnace temperature shall be placed at the centre of each fire
damper section. The unexposed surface thermocouples for maximum and average temperature
measurements shall be placed on the supporting construction, duct and damper body in accordance with
EN 1366-2.
Classify the assembly in accordance with EN 13501-3. Horizontal and vertical tests are required if each
application is to be used.
6.2.3 Field of application
Classification will be as the original single section units with regard to all the E, I and S classifications for
the time period as long as the criteria for E, I and S in accordance with test described in 6.2.2.2 are fulfilled.
Assemblies tested mounted vertically (in a wall) shall only allow the classification in vertical installations.
Assemblies tested mounted horizontally (in a floor) shall allow the classification in horizontal
installations.
The classification shall apply to all multiple assemblies up to the size of the EXAP tested single section
units and for the number of sections tested in the multiple assembly.
EXAMPLE 1 Original unit tested: 1 500 mm × 800 mm
Assembly tested: 2 off – 1 500 mm × 800 mm dampers (Nominal size 1 500 mm × 1 600 mm).
All classifications are allowed for assemblies up to this size (1 500 mm × 1 600 mm) if tested in both horizontal and
vertical applications providing the installation method is the same.
EXAMPLE 2 Original unit tested: 1 500 mm × 800 mm
Assembly tested: 2 off – 1 000 mm × 800 mm dampers (Nominal size 1 000 mm × 1 600 mm).
All classifications are allowed for assemblies up to this size (1 000 mm × 1 600 mm) in both horizontal and vertical
applications providing the installation method is the same.
6.3 Alternative penetration seals
Alternative materials to seal the gap between the supporting construction and the fire damper
(penetration seal) shall be tested in association with a fire damper in accordance with EN 1366-2, with
the following exceptions:
If gypsum plaster is used, any mortar in accordance with EN 998-2 up to M20 may be used.
If mortar in accordance with EN 998-2 is used, gypsum plaster may not be used.
FR mortars may be used if in accordance with EN 998-2 up to Class M20.
Tested ablative batt material may be replaced by an alternative ablative batt material providing at least
the same density, thickness and reaction to fire characteristics are equal or greater than that tested, and
there is supporting test evidence to EN 1366-3.
7 Influence of parameters and factors on fire damper performance
This document takes into account the parameters and factors that can affect the fire resistance
performance of fire resisting dampers when tested in accordance with the method of test in EN 1366-2.
These have been listed in Table 1 to Table 4.
The influence on integrity, insulation and, where appropriate, smoke leakage, shall be evaluated in
accordance with the clauses and tables in this document.
The parameters and factors of the anticipated influence on damper performance are specified in Table 1
to Table 4.
Consideration of the parameters and factors in Clause 8 have led to the development of the rules in
Clause 9 (Table 5), which state any conclusions that may be drawn or requirements for further testing,
whichever is relevant.
8 Critical parameters and factors
8.1 General
The following parameters and factors are considered to affect the fire resistance performance of a fire
damper and shall be taken into account when determining the field of extended application.
8.2 Common operational parameters and factors
Table 1 — Common operational parameters and factors
Line Parameter Factor
1 Fire exposure Exposed or not exposed
Changes in pressure (positive or Lower or higher
negative)
9 Constructional parameters
9.1 General
Table 2 — Constructional parameters
Line Parameter Factor
Change in location of damper blade Closer or further from the end of the
according to the housing damper housing
Change in axis position ac
...