Fire detection and fire alarm systems - Part 20: Aspirating smoke detectors

This European Standard specifies the requirements, test methods and performance criteria for aspirating smoke detectors for use in fire detection and fire alarm systems installed in buildings.
Aspirating smoke detectors developed for the protection of specific risks that incorporate special characteristics (including additional features or enhanced functionality for which this standard does not define a test or assessment method) are not covered by this standard. The performance requirements for any special characteristics are beyond the scope of this standard.
NOTE   Certain types of detector contain radioactive materials. The national requirements for radiation protection differ from country to country and they are not therefore specified in this standard.

Brandmeldeanlagen - Teil 20: Ansaugrauchmelder

Diese Europäische Norm legt Anforderungen, Prüfverfahren und Leistungsmerkmale für Ansaugrauchmelder
fest, die für Brandmeldeanlagen in Gebäuden eingesetzt werden.
Ansaugrauchmelder, die für bestimmte Risiken mit speziellen Eigenschaften entwickelt wurden (einschließlich
zusätzlicher Merkmale oder mit erweiterte Funktionalität, für die diese Norm keine Prüfungen oder Nachweisverfahren
festlegt), sind in dieser Norm nicht behandelt. Die Leistungsanforderungen für die speziellen
Eigenschaften werden vom Anwendungsbereich dieser Norm nicht erfasst.
ANMERKUNG Einige Meldertypen enthalten radioaktive Stoffe. Die nationalen Anforderungen für den Schutz gegen
ionisierende Strahlung sind in den Ländern unterschiedlich und werden deshalb in der vorliegenden Norm nicht festgelegt.

Systemes de détection et d'alarme incendie - Partie 20 : Détecteurs de fumée par aspiration

La présente Norme européenne spécifie les exigences, les procédures d’essai et les criteres de performance pour les détecteurs de fumée par aspiration pour utilisation dans les systemes de détection et d’alarme incendie installés dans les bâtiments.
Les détecteurs de fumée par aspiration conçus pour la protection contre des risques spécifiques comportant des caractéristiques particulieres (y compris des propriétés supplémentaires ou une fonctionnalité améliorée pour lesquels la présente norme ne définit pas d’essai ou de méthode d’évaluation) ne sont pas couverts par la présente norme. Les exigences de performance pour toute caractéristique particuliere sortent du domaine d’application de la présente norme.
NOTE   Certains types de détecteurs peuvent contenir des matériaux radioactifs. Les exigences nationales pour la protection contre les rayonnements varient d’un pays a l’autre et ne sont par conséquent pas spécifiées dans la présente norme.

Sistemi za odkrivanje in javljanje požara ter alarmiranje - 20. del: Aspiracijski dimni javljalniki

General Information

Status
Published
Publication Date
31-Oct-2006
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Nov-2006
Due Date
01-Nov-2006
Completion Date
01-Nov-2006

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SLOVENSKI STANDARD
SIST EN 54-20:2006
01-november-2006
Sistemi za odkrivanje in javljanje požara ter alarmiranje - 20. del: Aspiracijski dimni
javljalniki
Fire detection and fire alarm systems - Part 20: Aspirating smoke detectors
Brandmeldeanlagen - Teil 20: Ansaugrauchmelder
Systemes de détection et d'alarme incendie - Partie 20 : Détecteurs de fumée par
aspiration
Ta slovenski standard je istoveten z: EN 54-20:2006
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
SIST EN 54-20:2006 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 54-20:2006

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SIST EN 54-20:2006
EUROPEAN STANDARD
EN 54-20
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2006
ICS 13.220.20

English Version
Fire detection and fire alarm systems - Part 20: Aspirating
smoke detectors
Systèmes de détection et d'alarme incendie - Partie 20 : Brandmeldeanlagen - Teil 20: Ansaugrauchmelder
Détecteurs de fumée par aspiration
This European Standard was approved by CEN on 18 May 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 54-20:2006: E
worldwide for CEN national Members.

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SIST EN 54-20:2006
EN 54-20:2006 (E)
Contents Page
Foreword. 4
1 Scope. 6
2 Normative references . 6
3 Terms and definitions. 7
4 Symbols and abbreviations . 7
5 Requirements . 8
5.1 Compliance. 8
5.2 Individual visual alarm indication . 8
5.3 Connection of ancillary devices . 8
5.4 Manufacturer's adjustments . 8
5.5 On site adjustment of response behaviour.8
5.6 Response to slowly developing fires. 9
5.7 Mechanical strength of the pipework. 9
5.8 Hardware components and additional sensing elements in the sampling device . 10
5.9 Airflow monitoring . 10
5.10 Power supply. 11
5.11 Data. 11
5.12 Additional requirements for software controlled detectors . 12
6 Tests. 13
6.1 General. 13
6.2 Repeatability. 16
6.3 Reproducibility. 17
6.4 Variation in supply parameters . 17
6.5 Dry heat (operational). 18
6.6 Cold (operational) . 19
6.7 Damp heat, steady state (operational). 20
6.8 Damp heat, steady state (endurance) . 21
6.9 Sulfer dioxide (SO ) corrosion (endurance). 22
2
6.10 Shock (operational). 23
6.11 Impact (operational). 24
6.12 Vibration, sinusoidal (operational). 25
6.13 Vibration, sinusoidal (endurance). 26
6.14 Electromagnetic compatibility (EMC) immunity tests. 27
6.15 Fire sensitivity. 28
7 Classification and designation. 31
8 Marking . 32
Annex A (informative) Apparatus for Response Threshold Value (RTV) measurements . 33
Annex B (normative) Smouldering (pyrolysis) wood fire (TF2). 41
B.1 Fuel. 41
B.2 Hotplate. 41
B.3 Arrangement. 41
B.4 Heating rate . 42
B.5 End of test condition . 42
B.6 Test validity criteria . 42
Annex C (normative) Reduced smouldering pyrolysis wood fires (TF2A and TF2B). 44
C.1 Fuel. 44
2

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SIST EN 54-20:2006
EN 54-20:2006 (E)
C.2 Hotplate. 44
C.3 Arrangement. 44
C.4 Heating rate . 45
C.5 End of test condition . 45
C.6 Test validity criteria . 45
Annex D (normative) Glowing smouldering cotton fire (TF3) . 47
D.1 Fuel. 47
D.2 Arrangement. 47
D.3 Ignition . 48
D.4 End of test condition . 48
D.5 Test validity criteria . 48
Annex E (normative) Reduced glowing smouldering cotton fire (TF3A and TF3B). 50
E.1 Fuel. 50
E.2 Arrangement. 50
E.3 Ignition . 51
E.4 End of test condition . 51
E.5 Test validity criteria . 52
Annex F (normative) Flaming plastics (polyurethane) fire (TF4) . 53
F.1 Fuel. 53
F.2 Arrangement. 53
F.3 Ignition . 53
F.4 End of test condition . 53
F.5 Test validity criteria . 53
Annex G (normative) Flaming liquid (n-heptane) fire (TF5). 55
G.1 Fuel. 55
G.2 Arrangement. 55
G.3 Ignition . 55
G.4 End of test condition . 55
G.5 Test validity criteria . 55
Annex H (normative) Reduced flaming liquid (n-heptane) fire (TF5A and TF5B). 57
H.1 Fuel. 57
H.2 Arrangement. 57
H.3 Ignition . 57
H.4 End of test condition . 58
H.5 Test validity criteria . 58
Annex I (normative) Fire test room and ventilation system . 60
I.1 Fire test room . 60
I.2 Ventilation system . 62
Annex J (informative) Information concerning the requirements for the response to
slowly developing fires. 64
Annex K (informative) Apparatus for air flow monitoring test.68
K.1 General. 68
K.2 Airflow measuring with worst-case sampling device . 68
K.3 Airflow monitoring test with test pipe network. 69
Annex ZA (informative) Clauses of this European Standard addressing the provisions of
the EU Construction Products Directive .71
ZA.1 Scope and relevant clauses. 71
ZA.2 Procedures for the attestation of conformity of aspirating smoke detectors
covered by this standard . 72
ZA.3 CE Marking and labelling and accompanying documentation . 77
ZA.4 EC certificate and declaration of conformity . 78
Bibliography . 80

3

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SIST EN 54-20:2006
EN 54-20:2006 (E)
Foreword
This document (EN 54-20:2006) has been prepared by Technical Committee CEN/TC 72 “Fire
detection and fire alarm systems”, 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 December 2006, and conflicting national standards
shall be withdrawn at the latest by June 2009.
This document has been prepared under a mandate given to CEN by the European Commission and
the European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
EN 54 “Fire detection and fire alarm systems” consists of the following parts:
Part 1: Introduction
Part 2: Control and indicating equipment
Part 3: Fire alarm devices – Sounders
Part 4: Power supply equipment
Part 5: Heat detectors - Point detectors
Part 7: Smoke detectors - Point detectors using scattered light, transmitted light or ionization
Part 10: Flame detectors - Point detectors
Part 11: Manual call points
Part 12: Smoke detectors - Line detectors using an optical light beam
Part 13: Compatibility assessment of system components
Part 14: Guidelines for planning, design, installation, commissioning, use and maintenance
Part 15: Point detectors using a combination of detected fire phenomena
Part 16: Voice alarm control and indicating equipment
Part 17: Short-circuit isolators
Part 18: Input/output devices
Part 20: Aspirating smoke detectors
Part 21: Alarm transmission and fault warning routing equipment
Part 22: Line-type heat detectors
Part 23: Fire alarm devices - Visual alarms
Part 24: Components of voice alarm systems – Loudspeakers
4

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SIST EN 54-20:2006
EN 54-20:2006 (E)
Part 25: Components using radio links and system requirements
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
5

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SIST EN 54-20:2006
EN 54-20:2006 (E)
1 Scope
This European Standard specifies the requirements, test methods and performance criteria for
aspirating smoke detectors for use in fire detection and fire alarm systems installed in buildings.
Aspirating smoke detectors developed for the protection of specific risks that incorporate special
characteristics (including additional features or enhanced functionality for which this standard does
not define a test or assessment method) are not covered by this standard. The performance
requirements for any special characteristics are beyond the scope of this standard.
NOTE Certain types of detector contain radioactive materials. The national requirements for radiation
protection differ from country to country and they are not therefore specified in this standard.
2 Normative references
The following referenced documents are indispensable for the application 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 54-1:1996, Fire detection and fire alarm systems – Part 1: Introduction
EN 54-2, Fire detection and fire alarm systems – Part 2: Control and indicating equipment
EN 54-4, Fire detection and fire alarm systems – Part 4: Power supply equipment
EN 54-7:2000, Fire detection and fire alarm systems – Part 7: Smoke detectors – Point detectors
using scattered light, transmitted light or ionization
EN 50130-4:1995, Alarm systems – Part 4: Electromagnetic compatibility – Product family standard:
Immunity requirements for components of fire, intruder and social alarm systems
EN 60068-1, Environmental testing - Part 1: General and guidance (IEC 60068-1:1988 + Corrigendum
1988 + A1:1992)
EN 60068-2-1, Environmental testing; part 2: tests; tests A: cold (IEC 60068-2-1:1990)
EN 60068-2-2, Basic environmental testing procedures; part 2: tests; tests B: dry heat (IEC 60068-2-
2:1974 + IEC 60068-2-2A:1976)
EN 60068-2-6, Environmental testing - Part 2: Tests - Tests Fc: Vibration (sinusoidal) (IEC 60068-2-
6:1995 + Corrigendum 1995)
EN 60068-2-27, Basic environmental testing procedures – Part 2: Tests – Test Ea and guidance:
Shock (IEC 60068-2-27:1987)
EN 60068-2-42, Environmental testing - Part 2-42: Tests; Test Kc: Sulphur dioxide test for contacts
and connections (IEC 60068-2-42:2003)
EN 60068-2-75, Environmental testing - Part 2: Tests - Test Eh: Hammer tests (IEC 60068-2-75:1997)
EN 60068-2-78, Environmental testing - Part 2-78: Tests; Test Cab: Damp heat, steady state (IEC
60068-2-78:2001)
EN 61386-1:2004, Conduit systems for electrical installations - Part 1: General requirements (IEC
61386-1:1996 + A1:2000)
6

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SIST EN 54-20:2006
EN 54-20:2006 (E)
3 Terms and definitions
For the purposes of this document the terms and definitions given in EN 54-1:1996 and the following
apply.
3.1
aspirating smoke detector
smoke detector, in which air and aerosols are drawn through a sampling device and carried to one or
more smoke sensing elements by an integral aspirator (e.g. fan or pump)
NOTE Each smoke sensing element may contain more than one sensor exposed to the same smoke
sample.
3.2
sampling device
component or series of components or dedicated device (e.g. a pipe network, dedicated duct, probe
or hood) which forms part of the ASD and transfers samples of air to the smoke sensing element(s)
NOTE The sampling device may be supplied separately.
3.3
sampling point
any point at which an air sample is drawn into the sampling device
3.4
response threshold value (RTV)
measure of the aerosol concentration in the proximity of the smoke sensing element at the moment
that the specimen generates an alarm signal, when it is tested as described in 6.1.5
3.5
transport time
time for aerosols to transfer from a sampling point to the smoke sensing element
3.6
recovery
treatment of a specimen, after conditioning, so that the properties of the specimen may be stabilized
before measurement of the said property as required by this standard
4 Symbols and abbreviations
For the purposes of this standard, the following abbreviations apply:
ASD: Aspirating smoke detector.
CIE: Control and indicating equipment.
CPC: Condensation particle counter.
DUT: Detector under test.
EEA: European Economic Area.
EMC: Electromagnetic compatibility.
EOT: End of test.
FPC: Factory production control.
7

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SIST EN 54-20:2006
EN 54-20:2006 (E)
MIC: Measuring ionization chamber.
RTV: Response threshold value.
5 Requirements
5.1 Compliance
To comply with this standard the detector shall meet the requirements of this clause, which shall be
verified by inspection and engineering assessment, and, when tested in accordance with the tests
described in Clause 6, shall meet the requirements of the tests.
5.2 Individual visual alarm indication
Each aspirating smoke detector shall be provided with integral red visual indicator(s), visible from
outside the aspirating smoke detector, by which the individual smoke sensing element(s) (see 3.1),
which released an alarm, can be identified, until the alarm condition is reset. Where other conditions
of the detector may be visually indicated, they shall be clearly distinguishable from the alarm
indication.
5.3 Connection of ancillary devices
The detector may provide for connections to ancillary devices (e.g. remote indicators, control relays),
but open- or short-circuit failures of these connections shall not prevent the correct operation of the
detector.
5.4 Manufacturer's adjustments
It shall not be possible to change the manufacturer's settings except by special means (e.g. the use of
a special code or tool) or by breaking or removing a seal.
5.5 On site adjustment of response behaviour
NOTE 1 The effective response behaviour of an aspirating smoke detector is dependent upon both the
sensitivity settings of the smoke sensing element and the design of the sampling device. Many types of aspirating
smoke detectors therefore have facilities to adjust the smoke sensing element sensitivity to suit the application
and sampling device etc.
If there is provision for field-adjustment of the sensitivity of the smoke sensing element then:
a) access to the means of adjustment shall be limited by the need for the use of tools or a special
code;
b) it shall be possible to determine what sensitivity settings have been selected and to relate these
to documentation which describes the sensitivity settings required for different sampling devices
and applications;
NOTE 2 These adjustments may be made at the detector or at the control and indicating equipment.
NOTE 3 Changing sensitivity settings may affect the classification of the installed ASD – see Clause 7.
c) if it is possible to configure the detector (including the sampling device and the sensitivity
settings) in such a way that the detector does not comply with this standard, it shall be clearly
marked on the detector or in the associated data that, if such configurations are used, the
detector does not comply with this standard.
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SIST EN 54-20:2006
EN 54-20:2006 (E)
5.6 Response to slowly developing fires
The provision of "drift compensation" (e.g. to compensate for sensor drift due to the build up of dirt in
the detector), and/or the provision of algorithms to match a detector to its environment, shall not lead
to a significant reduction in the detector's sensitivity to slowly developing fires.
Because it is not practical to make tests with very slow increases in smoke density, an assessment of
the detector's response to slow increases in smoke density shall be made by analysis of the
circuit/software, and/or physical tests and simulations.
Where such algorithms are used, the detector shall be deemed to meet the requirements of this sub-
clause if the documentation and assessment shows:
a) how and why a sensor drifts,
b) how the compensation technique modifies the detector response to compensate for the drift,
c) that suitable limits to the compensation are in place to prevent the algorithms/means being
applied outside the known limitations of the sensor and to ensure ongoing compliance with the
clauses of this standard,
d) for any rate of increase in smoke density R, which is greater than A/4 per hour (where A is the
detector's initial uncompensated response threshold value), the time for the detector to give an
alarm does not exceed 1,6 × A/R by more than 100 s,
e) the range of compensation is limited such that, throughout this range, the compensation does not
cause the response threshold value of the detector to exceed its initial value by a factor greater
than 1,6.
NOTE Further information about the assessment of requirements d) and e) is given in Annex J.
5.7 Mechanical strength of the pipework
The sampling pipes and fittings shall have adequate mechanical strength and temperature resistance.
The minimum requirement shall be:
To use pipes classified in accordance with EN 61386-1 to at least Class 1131 (for the first four digits,
see Table 1).
9

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SIST EN 54-20:2006
EN 54-20:2006 (E)
Table 1 — Mechanical requirements of sampling pipe
Property Class Severity
Resistance to compression 1 125 N
Resistance to impact 1 0,5 kg, 100 mm height to fall
Temperature range 31 -15 °°C to +60 °C

Pipes which are not so classified by the manufacturer of the pipe shall either be tested in accordance
with Table 2 for the classes in Table 1, or the ASD manufacturer shall provide evidence that the
requirements of this sub-clause are met.
Table 2 — Mechanical tests
Test EN 61386-1:2004, subclause
Compression test 10.2
Impact test 10.3
Resistance to heat 12.2

The impact test shall be conducted at the minimum of the temperature range (i.e. -15 °C).
The pipe is deemed to have passed the resistance to heat test if any crushing of the pipe does not
reduce the internal diameter to less than 80 % of its original value.
Where the supplier of the A
...

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