prEN 14604
(Main)Smoke alarm devices
Smoke alarm devices
This document does not cover the requirements for devices intended for incorporation in systems using control and indicating equipment for fire detection and fire alarm systems
Rauchwarnmelder
Dieses Dokument legt Anforderungen, Prüfverfahren sowie Leistungskriterien fest und enthält Hersteller-anweisungen für Rauchwarnmelder, die nach dem Streulicht-, Durchlicht- (Typ A — optische Rauchwarn-melder) oder dem Ionisationsprinzip (Typ B — Ionisationsrauchmelder) arbeiten und für Anwendungen in Haushalten oder für vergleichbare Anwendungen in Wohnbereichen vorgesehen sind. Dieses Dokument enthält zusätzliche Anforderungen an Rauchwarnmelder, die auch für die Anwendung in bewohnbaren Freizeitfahrzeugen geeignet sind. Für die Prüfung von anderen Typen von Rauchwarnmeldern oder von Rauchwarnmeldern, die nach anderen Prinzipien arbeiten, sollte dieses Dokument nur als Leitfaden angewendet werden. Besondere Merkmale von Rauchwarnmeldern oder spezielle Eigenschaften für spezielle Risiken sind nicht Gegenstand dieses Dokuments. Dieses Dokument erlaubt, obwohl nicht gefordert, dass Rauchwarnmelder mit anderen vergleichbaren Rauch-warnmeldern und/oder Zusatzeinrichtungen verbunden werden, sowie eine Alarmstummschaltung. Wenn derartige Einrichtungen verwendet werden, legt dieses Dokument die zu erfüllenden Anforderungen fest. Dieses Dokument enthält keine Anforderungen an Geräte, die für den Einbau in Anlagen mit getrennten Steuer- und Anzeigeeinrichtungen vorgesehen sind. ANMERKUNG Bestimmte Arten von Rauchwarnmeldern enthalten radioaktive Materialien. Die nationalen Strahlen-schutzanforderungen sind von Land zu Land unterschiedlich und sind nicht Gegenstand dieses Dokuments. Diese Rauchwarnmelder sollten jedoch den jeweiligen nationalen Anforderungen entsprechen.
Dispositif d'alarme de fumée
La présente Norme européenne spécifie les exigences, les méthodes d’essai, les critères de performance et
les instructions du fabricant pour les dispositifs d’alarme de fumée qui utilisent le principe de diffusion ou de
transmission de la lumière (optique de type A), ou de l’ionisation (ionisation de type B), pour des applications
domestiques ou similaires.
La présente norme inclut des exigences supplémentaires concernant les dispositifs d’alarme de fumée qui
conviennent également à une utilisation dans des camping-cars.
Pour les essais relatifs à d’autres types de dispositifs d’alarme de fumée ou à des dispositifs d’alarme de
fumée fonctionnant selon différents principes, il convient que la présente norme soit utilisée à titre de guide
uniquement. Des particularités spéciales pour dispositifs d’alarme de fumées ou des caractéristiques
spéciales et conçues pour des risques spécifiques, ne sont pas couvertes par la présente norme.
Cette norme permet, le cas échéant, d’inclure dans le dispositif d’alarme de fumée des dispositifs
d’interconnexion avec d’autres dispositifs d’alarme de fumée similaires et/ou accessoires, et de neutralisation
de l’alarme. Lorsque des dispositifs de cette nature sont inclus, cette norme spécifie les exigences
applicables.
Cette norme ne couvre pas les exigences relatives aux dispositifs destinés à être incorporés dans des
systèmes qui utilisent des équipements de commande et d’indication séparés.
NOTE Certains types de dispositifs d’alarme de fumée contiennent des substances radioactives. Les exigences
nationales en matière de protection contre les radiations varient d’un pays à l’autre et ne sont donc pas spécifiées dans la
présente norme. Il convient toutefois que des dispositifs d’alarme de fumée de ce type soient conformes à la
réglementation nationale applicable.
Javljalniki dima
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 14604:2012
01-april-2012
Javljalniki dima
Smoke alarm devices
Rauchwarnmelder
Dispositifs d'alarme de fumée
Ta slovenski standard je istoveten z: prEN 14604
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
oSIST prEN 14604:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN 14604:2012
---------------------- Page: 2 ----------------------
oSIST prEN 14604:2012
EUROPEAN STANDARD
DRAFT
prEN 14604
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2012
ICS 13.220.20 Will supersede EN 14604:2005
English Version
Smoke alarm devices
Dispositifs d'alarme de fumée Rauchwarnmelder
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 72.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14604:2012: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
4 Requirements .6
5 Tests . 21
6 Evaluation of conformity . 51
Annex A (normative) Smoke tunnel for response threshold value measurements . 59
Annex B (normative) Test aerosol for response threshold value measurements . 60
Annex C (normative) Smoke measuring instruments . 61
Annex D (normative) Apparatus for dazzling test . 65
Annex E (informative) Apparatus for impact test . 66
Annex F (normative) Fire test room . 68
Annex G (normative) Smouldering pyrolysis wood fire (TF2) . 70
Annex H (normative) Glowing smouldering cotton fire (TF3) . 73
Annex I (normative) Flaming plastics (polyurethane) fire (TF4) . 75
Annex J (normative) Flaming liquid (n-heptane) fire (TF5) . 77
Annex K (informative) Information concerning the construction of the smoke tunnel . 79
Annex L (normative) Alarms suitable for installation in leisure accommodation vehicles (LAVs) –
Temperature cycle test . 81
Annex M (informative) Information concerning the construction of the measuring
ionization chamber . 82
Annex N (normative) Radio Link Test Setups . 84
Annex O (normative) Calculation of the expected batter service life . 87
Annex ZA (informative) Clauses addressing the provisions of the EU Construction Products
Directive (89/106/EEC) . 89
Bibliography . 96
2
---------------------- Page: 4 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
Foreword
This document (prEN 14604:2012) has been prepared by Technical Committee CEN/TC 72 “Fire detection
and fire alarms systems”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 14604:2005.
prEN 14604:2012 includes the following significant technical changes with respect to EN 14604:2005:
4.2.3: new requirement for connection of external ancillary devices;
4.2.15: revised requirements for battery capacity;
4.2.16: revised requirements for battery fault warning;
4.2.21: new requirements for alarm silence feature;
4.2.22: revised requirements for protection against the ingress of foreign bodies;
4.2.25.4: revised requirements for marking for smoke alarms with radio link;
4.7: new requirements for smoke alarms using radio links have been added;
4.10: revised requirement for sulphur dioxide (SO ) corrosion;
2
4.11.1: new requirements for shock (operational);
4.12.1: revised requirements for the electrical safety;
4.12.2: updating references for the EMC immunity requirements reference EN 50130-4:2011.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
For relationship with EU Directive 89/106/EEC, see informative Annex ZA, which is an integral part of this
document.
3
---------------------- Page: 5 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
1 Scope
This document specifies requirements, test methods, performance criteria, and manufacturer's instructions for
smoke alarms that operate using scattered light or transmitted light (Type A- optical) or ionisation (Type B-
ionisation), intended for household or similar residential applications.
This document includes additional requirements for smoke alarms which are also suitable for use in leisure
accommodation vehicles.
For the testing of other types of smoke alarms, or smoke alarms working on different principles, this document
should only be used for guidance. Special features of smoke alarms or special characteristics and developed
for specific risks, are not covered by this document.
This document allows, although it does not require, the inclusion within the smoke alarm of facilities for
interconnection with other similar smoke alarms and/or accessories, and for alarm silencing. Where such
facilities are included, this document specifies applicable requirements.
This document does not cover the requirements for devices intended for incorporation in systems using
separate control and indicating equipment.
NOTE Certain types of smoke alarms contain radioactive materials. The national requirements for radiation
protection differ from country to country and they are not specified in this document. Such smoke alarms should, however,
comply with the applicable national requirements.
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 573-3, Aluminium and aluminium alloys — Chemical composition and form of wrought products — Part 3:
Chemical composition and form of products
EN 573-4, Aluminium and aluminium alloys — Chemical composition and form of wrought products — Part 4:
Forms of products
EN 50130-4:2011, Alarm systems — Part 4: Electromagnetic compatibility — Product family standard:
Immunity requirements for components of fire, intruder, hold up, CCTV, access control and social alarm
systems
EN 60065:2002, Audio, video and similar electronic apparatus — Safety requirements (IEC 60065:2001,
modified)
EN 60065:2002/A1:2006, Audio, video and similar electronic apparatus — Safety requirements
(IEC 60065:2001/A1:2005, modified)
EN 60068-1:1994, Environmental testing — Part 1: General and guidance (IEC 60068-1:1988 + Corrigendum
1988 + A1:1992)
EN 60068-2-6:2008, Environmental testing — Part 2: Tests — Test Fc: Vibration (sinusoidal)
(IEC 60068-2-6:2007)
4
---------------------- Page: 6 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
EN 60068-2-42:2003, Environmental testing — Part 2-42: Tests — Test Kc: Sulphur dioxide test for contacts
and connections (IEC 60068-2-42:2003)
EN 60068-2-78:2001, Environmental testing — Part 2-78: Tests, Test Cab: Damp heat, steady state
(IEC 60068-2-78:2001)
EN 60950-1:2006, Information technology equipment — Safety — Part 1: General requirements
(IEC 60950-1:2005, modified)
EN 61672-1:2003, Electroacoustics — Sound level meters — Part 1: Specifications (IEC 61672-1:2002)
EN ISO 9001:2000, Quality management systems — Requirements (ISO 9001:2000)
ETSI EN 300 220-1, Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range Devices
(SRD); Radio equipment to be used in the 25 MHz to 1 000 MHz frequency range with power levels ranging
up to 500 mW; Part 1: Technical characteristics and test methods
ETSI EN 300 220-2, Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range Devices
(SRD); Radio equipment to be used in the 25 MHz to 1 000 MHz frequency range with power levels ranging
up to 500 mW; Part 2: Harmonized EN covering essential requirements under article 3.2 of the R&TTE
Directive
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
alarm condition
condition in which the alarm is giving an audible signal specified by the manufacturer as indicating the
existence of a fire
3.2
alarm silence facility
means of temporarily disabling or desensitising a smoke alarm
3.3
detachable
means part can be removed for maintenance or other purposes without damaging either component
3.4
fault condition
condition in which the operation of the smoke alarm is affected by an adverse condition of a component
3.5
fault warning
signal intended to indicate an actual or incipient fault that might prevent the emitting of a fire alarm signal
3.6
inter-connectable smoke alarm
smoke alarm which may be interconnected with other smoke alarms to provide a common alarm
3.7
normal condition
condition in which the smoke alarm is energized but is not giving either a fire alarm signal or a fault warning,
although able to give such signals if the occasion arises
5
---------------------- Page: 7 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
3.8
normal power source
primary source of power intended to supply the smoke alarm, e.g. a battery or mains
3.9
response threshold
smoke concentration at which the smoke alarm changes to its alarm condition
3.10
smoke alarm
device containing all the components necessary for detecting smoke and for giving an audible alarm. This
may comprise one or more parts such as a base (socket) and a head (body).
3.11
standby power source
source of power intended to supply the smoke alarm in the event of a failure of the normal power source
3.12
Type A – optical
smoke alarm sensitive to combustion products capable of affecting the absorption or scattering of radiation in
the infra-red, visible and/or ultraviolet regions of the electromagnetic spectrum
3.13
Type B – ionisation
smoke alarm sensitive to combustion products capable of affecting ionisation currents within the detector
4 Requirements
4.1 Compliance
In order to comply with this document the smoke alarm shall meet the requirements of this section, and this
shall be as specified by visual inspection or engineering assessment, or shall be tested as described in
Clause 5 and shall meet the requirements of the tests. For smoke alarms which a manufacturer claims are
suitable for leisure accommodation vehicles, the tests in Annex L shall be applied.
4.2 Operational reliability
4.2.1 Individual alarm indicator
4.2.1.1 Non Inter-connectable smoke alarm
An optional alarm indicator, if fitted, shall be red and shall be separate from the mains-on indicator. This visual
indicator may also perform other additional functions but the alarm indication needs to be distinct from any
additional functions. The failure of any visual indicator shall not prevent the emitting of a fire alarm signal.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.1.1.
4.2.1.2 Inter-connectable smoke alarm
An alarm indicator for inter-connectable smoke alarms shall be red and shall be separate from the mains-on
indicator. This visual indicator may also perform other additional functions but the alarm indication needs to be
distinct from any additional functions. The failure of any visual indicator shall not prevent the emitting of a fire
alarm signal.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.1.2.
6
---------------------- Page: 8 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
4.2.2 Mains-on and other indicators
A smoke alarm intended to be connected to the AC mains shall be provided with a continuous mains-on
indicator to indicate energization of the unit. This indicator shall be coloured green and shall be separate from
any other indicators. The failure of any visual indicator shall not prevent the emitting of a fire alarm signal.
If more than one light-emitting indicator is provided on the smoke alarm, the mains-on indicator shall be green,
an alarm indicator shall be red, and a fault indicator shall be amber or yellow.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.2.
4.2.3 Connection of external ancillary devices
The smoke alarm may provide for connections to external ancillary devices (e.g. test facility, alarm silence
facility, remote indicators, control relays, transmitters) by hard wiring, or by RF or by another means, but open-
or short-circuit failure of these connections or disruption of the communication path shall not prevent the
correct operation of the smoke alarm.
In addition, if the external ancillary device is required for the essential performance of the smoke alarm then it
shall be considered as part of the detector and all environmental and EMC conditions shall be applied. If these
features are already provided in the smoke alarm device then the environmental and EMC conditions are not
required.
To confirm this, the smoke alarm and its associated ancillary device(s) shall be tested in accordance with
5.2.3.
4.2.4 Means of calibration
The manufacturer's means of calibration shall not be readily adjustable, on site, after manufacture.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.4.
4.2.5 User replaceable components
Except for batteries or fuses, a smoke alarm shall have no user replaceable or serviceable components.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.5.
4.2.6 Normal power source
The power source of the smoke alarm may be internal or external to the smoke alarm housing.
Where the power source is internal to the smoke alarm, the source shall meet the following requirements.
The power source shall operate the smoke alarm as specified in 4.2.15.
A distinctive audible fault signal shall be given before the battery is incapable of operating for alarm purposes
(see 4.2.16).
The smoke alarm shall be capable of producing an alarm signal for at least 4 min at the battery voltage at
which a fault signal is normally obtained or 30 days of fault signal operation (see 4.2.15).
The internal power source shall be replaceable by the user unless its operating life (see 4.2.15) in the smoke
alarm is 10 years or greater.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.6.
7
---------------------- Page: 9 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
4.2.7 Standby power source
For smoke alarms intended for connection to an external power supply, for which an integral back-up/standby
power facility is provided, the following requirements shall apply:
a. primary cell battery back-up: the back-up power supply shall be capable of meeting the requirements of
4.2.15;
b. rechargeable back-up power sources: the back-up power source shall be capable of supplying the
quiescent load of the smoke alarm for a minimum period of 72 h followed by an alarm signal as specified
in 5.2.19 for at least 4 min in the event of fire, or in the absence of a fire, a fault warning for at least 24h.
In the absence of suitable test procedures to verify the back-up power source, data concerning the smoke
alarm loads and the back-up facility characteristics shall be used to indicate that the above requirements can
be met.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.7.
4.2.8 Monitoring of back-up power source
The back-up power source shall be monitored by the smoke alarm for faults. These faults shall include low
back-up, open circuit and short circuit failure of the back-up.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.8.
4.2.9 Routine test facility
A routine test facility shall be provided on all smoke alarms to simulate either mechanically or electrically the
presence of smoke in the sensing assembly. The test feature shall be accessible from outside the smoke
alarm when installed as specified in the installation instructions.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.9.
4.2.10 Terminals for external conductors
4.2.10.1 Connections
The smoke alarm or base, as appropriate, if intended to have external connections, shall provide for the
connection of conductors by means of screws, nuts or equally effective devices. For mains-powered smoke
alarms which utilize flexible lead connections, these connections shall be regarded as conductors. If terminals
are provided, they shall allow the connection of conductors having nominal cross-sectional areas of between
2 2
0,4 mm and 1,5 mm . Disconnection of the conductors, or access to the conductors for disconnection, shall
not be possible without the use of a tool. Terminals shall be designed so that they clamp the conductor
between metal surfaces without rotation of those surfaces but with sufficient contact pressure and without
damage to the conductor.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.10.1.
4.2.10.2 Flexible lead connections
Flexible lead connections shall be held with sufficient force so as not to come detached by forces they may
experience in the field.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.10.2.
8
---------------------- Page: 10 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
4.2.11 Smoke alarm signals
In a smoke alarm which employs one or more non-fire alarm features the following operation shall be
obtained:
a. the smoke alarm fire alarm signal shall take precedence over any other signal even when such other
signal is initiated first.
b. distinctive signals shall be obtained between a smoke alarm's fire alarm and other non-fire alarm functions.
Use of a common sounder is permitted if distinctive signals are obtained. If an audible fault signal is
provided it shall be distinctive from all alarm signals but may be common to all functions employed.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.11.
4.2.12 Non-replaceable power sources
Upon installation of the smoke alarm the power source(s) (normal power source and the standby power
source if applicable) shall be automatically activated.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.12.
4.2.13 Battery removal indication
The removal of any user-replaceable battery used to power, or provide back-up power, for the smoke
detection circuit/sounder, from a battery or mains powered d.c. backed smoke alarm, shall result in a visual,
mechanical or audible warning that the battery has been removed. The visual warning shall not depend upon
a power source.
NOTE Conformity may be achieved by, but is not restricted to, one of the following examples:
a) a warning flag that will be exposed with the battery removed and the cover closed;
b) a hinged cover or battery compartment that cannot be closed when the battery is removed;
c) a unit that cannot be replaced upon its mounting base/bracket with the battery removed.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.13.
4.2.14 Battery connections
4.2.14.1 Lead or terminal connections to batteries shall be identified with the proper polarity (plus or minus).
The polarity may be indicated on the unit adjacent to the battery terminals or leads.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.14.1.
4.2.14.2 Any leads connecting the terminal connectors of batteries in smoke alarms to the smoke alarm
circuit board shall be provided with strain relieving devices adjacent to both battery terminal connectors and
the smoke alarm circuit board so that when the leads are subjected to normal handling they are not likely to
become damaged or detached.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.14.2.
4.2.15 Battery capacity
The batteries supplied with or specified for use in smoke alarms shall be capable of supplying the quiescent
load of the smoke alarm together with the additional load resulting from a routine weekly 10 s test for at least
1 year or duration specified by the manufacturer, if longer, before the battery fault warning is given. At the
point when the battery fault warning commences, the batteries shall have sufficient capacity to give an alarm
9
---------------------- Page: 11 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
signal as specified in 5.2.19 for at least 4 min in the event of fire, or in the absence of fire, a battery fault
warning for at least 30 days.
To verify battery capacity, data concerning the smoke alarm loads and the battery characteristics shall be
used to indicate that the above requirements can be met at normal ambient conditions, assuming that the
smoke alarm operates at ambient temperature during 50 weeks/year, at 0°C during 1 week/year and at 45°C
during 1 week/year.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.15.
4.2.16 Battery fault warning
A smoke alarm shall give an audible fault warning before an increase in the internal resistance or decrease in
the terminal voltage of the battery prevents correct operation.
Compliance is checked as per 5.2.16.
4.2.17 Battery reversal
The smoke alarm shall function properly after being misconnected with respect to polarity.
Compliance is checked as per 5.2.17.
4.2.18 Reduction of supply voltage to zero
A smoke alarm shall not give an alarm signal as the battery voltage decreases from the V to zero volts.
E
Compliance is tested as per 5.2.18.
4.2.19 Sound output
The smoke alarm shall be capable of providing an adequate sound output.
Compliance is checked as per 5.2.19.
4.2.20 Sounder durability
The smoke alarm's sounder shall operate as intended after prolonged operation.
Compliance is checked as per 5.2.20.
4.2.21 Alarm silence facility (optional)
If means of temporarily disabling or desensitising a smoke alarm are provided the following shall apply.
a. The initiation of the alarm silence period shall require the operation of a manual control on the smoke
alarm.
NOTE 1 This control may be the same as a manual control provided for routine testing.
b. Operation of the alarm silence control shall desensitise the smoke alarm for at least 5 min. The sensitivity
of the smoke alarm shall be restored within 15 min of operation of the alarm silence control. If the alarm
silence period is adjustable it shall not be possible to set it to less than 5 min or to more than 15 min.
10
---------------------- Page: 12 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
c. Continuous operation of the alarm silence control shall not lead to the smoke alarm being desensitised for
more than 15 min without an audible warning being given.
NOTE 2 This requirement is intended to prevent the permanent loss of sensitivity due to accidental or deliberate
jamming of the control.
Compliance is checked as per 5.2.21.
4.2.22 Protection against the ingress of foreign bodies
The smoke alarm shall be so designed that a sphere of diameter (1,3 ± 0,05) mm and a rectangular probe 1,0
+/- 0.05 by 2.0 +/- 0.05 mm, cannot pass into the sensor chamber(s).
NOTE This requirement is intended to restrict the access of insects into the sensitive parts of the smoke alarm. It is
known that this requirement is not sufficient to prevent the access of all insects, however it is considered that extreme
restrictions on the size of access holes may introduce the danger of clogging by dust etc. It may therefore be necessary to
take other precautions against false alarms due to the entry of small insects.
To confirm this, the smoke alarm shall be tested in accordance with 5.2.22.
4.2.23 Additional requirements for software controlled smoke alarms
4.2.23.1 General
For smoke alarms, which rely on software control in order to fulfil the requirements of this document, the
requirements of 4.2.23.2, 4.2.23.3 and 4.2.23.4 shall be met.
4.2.23.2 Software documentation
4.2.23.2.1 The manufacturer shall submit documentation which gives an overview of the software design.
This documentation shall be in sufficient detail for the design to be inspected for compliance with this
document and shall include at least the following:
a. a functional description of the main program flow (e.g. as a flow diagram or structogram) including:
1) a brief description of the modules and the functions that they perform;
2) the way in which the modules interact;
3) the overall hierarchy of the program;
4) the way in which the software interacts with the hardware of the smoke alarms;
5) the way in which them modules are called, including any interrupt processing;
b. a description of which areas of memory are used for the various purposes (e.g. the program, site specific
data and running data);
c. a designation, by which the software and its version can be uniquely identified.
4.2.23.2.2 The manufacturer shall have available detailed design documentation, which only needs to be
provided if required by the testing authority. It shall comprise at least the following:
a. an overview of the whole system configuration, including all software and hardware components;
11
---------------------- Page: 13 ----------------------
oSIST prEN 14604:2012
prEN 14604:2012 (E)
b. a description of each module of the program, containing at least:
1) the name of the module;
2) a description of the tasks performed;
3) a description of the interfaces, including the type of data transfer, the valid data range and the
checking for valid data.
c. full source code listings, as hard copy or in machine-readable form (e.g. ASCII-code), including all global
and local variables, constants and labels used, and sufficient comment for the program flow to be
recognized;
d. details of any software tools used in the design and implementation phase (e.g. CASE-tools, compilers).
4.2.23.3 Software design
In order to ensure the reliability of the smoke alarm, the
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.