oSIST prEN 54-26:2025
(Main)Fire detection and fire alarm systems - Part 26: Carbon monoxide detectors - Point detectors
Fire detection and fire alarm systems - Part 26: Carbon monoxide detectors - Point detectors
This document specifies product characteristics, test methods and performance criteria for point detectors using carbon monoxide sensing (CO fire detectors) for use in fire detection and fire alarm systems for buildings and civil engineering works.
Brandmeldeanlagen - Teil 26: Kohlenmonoxidmelder - Punktförmige Melder
Dieses Dokument legt Produktkennwerte, Prüfverfahren und Leistungskriterien für punktförmige Brandmelder fest, die Kohlenmonoxid erkennen (CO-Brandmelder) und in Brandmelde- und Feueralarmanlagen für Gebäude und Hochbauten eingesetzt werden.
Systèmes de détection et d’alarme incendie - Partie 26 : Détecteurs de monoxyde de carbone - Détecteurs ponctuels
Le présent document spécifie les caractéristiques des produits, les méthodes d’essai et les critères de performance des détecteurs ponctuels à détection de monoxyde de carbone (détecteurs d’incendie CO) destinés à être utilisés dans les systèmes de détection et d’alarme incendie des bâtiments et des ouvrages de génie civil.
Sistemi za odkrivanje in javljanje požara ter alarmiranje - 26. del: Javljalniki ogljikovega monoksida - Točkovni javljalniki
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2025
Sistemi za odkrivanje in javljanje požara ter alarmiranje - 26. del: Javljalniki
ogljikovega monoksida - Točkovni javljalniki
Fire detection and fire alarm systems - Part 26: Carbon monoxide detectors - Point
detectors
Brandmeldeanlagen - Teil 26: Kohlenmonoxidmelder - Punktförmige Melder
Systèmes de détection et d’alarme incendie - Partie 26 : Détecteurs de monoxyde de
carbone - Détecteurs ponctuels
Ta slovenski standard je istoveten z: prEN 54-26
ICS:
13.220.20 Požarna zaščita Fire protection
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2024
ICS 13.220.20 Will supersede EN 54-26:2015
English Version
Fire detection and fire alarm systems - Part 26: Carbon
monoxide detectors - Point detectors
Systèmes de détection et d'alarme incendie - Partie 26 : Brandmeldeanlagen - Teil 26: Kohlenmonoxidmelder -
Détecteurs de monoxyde de carbone - Détecteurs Punktförmige Melder
ponctuels
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, 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 54-26:2024 E
worldwide for CEN national Members.
Contents Page
EUROPEAN FOREWORD 8
INTRODUCTION 10
1 SCOPE 11
2 NORMATIVE REFERENCES 11
3 TERMS AND DEFINITIONS 11
4 REQUIREMENTS AND ASSESSMENTS 12
4.1 General testing methods 12
4.1.1 Atmospheric conditions for tests 12
4.1.2 Operating conditions for tests 12
4.1.3 Mounting arrangements 12
4.1.4 Tolerances 13
4.1.5 Measurement of CO response value 13
4.1.6 Environmental tests of combined products 13
4.2 Individual alarm indication 14
4.2.1 Objective 14
4.2.2 Assessment method 14
4.2.3 Requirements 14
4.3 Rate sensitive CO response 14
4.3.1 Objective 14
4.3.2 Assessment method 15
4.3.3 Requirements 15
4.4 Response to slowly developing fires 15
4.4.1 Objective 15
4.4.2 Assessment method 15
4.4.3 Requirements 15
4.5 Connection of ancillary devices 15
4.5.1 Objective 15
4.5.2 Assessment method 16
4.5.3 Requirements 16
4.6 Monitoring of detachable detectors 16
4.6.1 Objective 16
4.6.2 Assessment method 16
4.6.3 Requirements 16
4.7 Manufacturer's adjustments 16
4.7.1 Objective 16
4.7.2 Assessment method 16
4.7.3 Requirements 16
4.8 On-site adjustment of response behaviour 16
4.8.1 Objective 16
4.8.2 Assessment method 16
4.8.3 Requirements 17
4.9 Software controlled detectors 17
4.9.1 Objective 17
4.9.2 Assessment method 17
4.9.3 Requirements 18
4.10 Repeatability 18
4.10.1 Objective 18
4.10.2 Assessment method 18
4.10.3 Requirements 18
4.11 Variation in supply parameters 18
4.11.1 Objective 18
4.11.2 Assessment method 19
4.11.3 Requirements 19
4.12 Reproducibility 19
4.12.1 Objective 19
4.12.2 Assessment method 19
4.12.3 Requirements 19
4.13 Fire sensitivity 19
4.13.1 Objective 19
4.13.2 Assessment method 19
4.13.3 Requirements 21
4.14 Long term stability (operational) 21
4.14.1 Objective 21
4.14.2 Assessment method 22
4.14.3 Requirements 22
4.15 Dry heat (operational) 22
4.15.1 Objective 22
4.15.2 Assessment method 22
4.15.3 Requirements 22
4.16 Dry heat (endurance) 23
4.16.1 Objective 23
4.16.2 Assessment method 23
4.16.3 Requirements 23
4.17 Cold (operational) 23
4.17.1 Objective 23
4.17.2 Assessment method 23
4.17.3 Requirements 24
4.18 Damp heat, cyclic (operational) 24
4.18.1 Objective 24
4.18.2 Assessment method 24
4.18.3 Requirements 25
4.19 Damp heat steady-state (operational) 25
4.19.1 Objective 25
4.19.2 Assessment method 25
4.19.3 Requirements 26
4.20 Damp heat steady-state (endurance) 26
4.20.1 Objective 26
4.20.2 Assessment method 26
4.20.3 Requirements 26
4.21 Low humidity, steady-state (operational) 26
4.21.1 Objective 26
4.21.2 Assessment method 27
4.21.3 Requirements 27
4.22 Shock (operational) 27
4.22.1 Objective 27
4.22.2 Assessment method 27
4.22.3 Requirements 28
4.23 Impact (operational) 28
4.23.1 Objective 28
4.23.2 Assessment method 28
4.23.3 Requirements 29
4.24 Vibration, sinusoidal (operational) 29
4.24.1 Objective 29
4.24.2 Assessment method 29
4.24.3 Requirements 30
4.25 Vibration, sinusoidal (endurance) 30
4.25.1 Objective 30
4.25.2 Assessment method 30
4.25.3 Requirements 30
4.26 Exposure to high level of carbon monoxide (operational) 31
4.26.1 Objective 31
4.26.2 Assessment method 31
4.26.3 Requirements 31
4.27 Exposure to chemical agents at environmental concentrations (operational) 31
4.27.1 Objective 31
4.27.2 Assessment method 31
4.27.3 Requirements 32
4.28 Sulphur dioxide (SO ) corrosion (endurance) 32
4.28.1 Objective 32
4.28.2 Assessment method 32
4.28.3 Requirements 33
4.29 Immunity against electromagnetic interferences (operational) 33
4.29.1 Objective 33
4.29.2 Assessment method 33
4.29.3 Requirements 34
5 MARKING, LABELLING AND SUPPLIED DATA 34
ANNEX A (NORMATIVE) GAS TEST CHAMBER FOR RESPONSE VALUE AND CROSS-
SENSITIVITY 35
A.1 GENERAL 35
A.2 GAS TEST CHAMBER SPECIFICATION 35
ANNEX B (NORMATIVE) CO AND SMOKE MEASURING INSTRUMENTS 37
B.1 GENERAL 37
B.2 CO MEASURING INSTRUMENTS 37
B.3 OBSCURATION METER 37
B.4 MEASURING IONIZATION CHAMBER (MIC) 37
ANNEX C (NORMATIVE) FIRE TEST ROOM 38
C.1 GENERAL 38
C.2 FIRE TEST ROOM SPECIFICATION 38
ANNEX D (NORMATIVE) SMOULDERING (PYROLYSIS) WOOD FIRE (TF2) 40
D.1 GENERAL 40
D.2 FUEL 40
D.3 HOTPLATE 40
D.4 ARRANGEMENT 40
D.5 HEATING RATE 40
D.6 END OF TEST CONDITION 40
D.7 TEST VALIDITY CRITERIA 40
ANNEX E (NORMATIVE) GLOWING SMOULDERING COTTON FIRE (TF3) 45
E.1 GENERAL 45
E.2 FUEL 45
E.3 ARRANGEMENT 45
E.4 IGNITION 46
E.5 END OF TEST CONDITION 46
E.6 TEST VALIDITY CRITERIA 46
ANNEX F (INFORMATIVE) INFORMATION CONCERNING THE CONSTRUCTION OF THE GAS
TEST CHAMBER 50
F.1 GENERAL 50
F.2 CONSTRUCTION OF THE GAS TEST CHAMBER 50
F.3 RECIRCULATING CO CHAMBER 50
F.4 DIFFUSION CO CHAMBER 52
F.5 VERIFICATION TIME CONSTANT AND OF MOUNTING POSITION FOR CO
MEASURING INSTRUMENT 53
ANNEX G (INFORMATIVE) ESTABLISHING EXPOSURE LEVELS OF CHEMICAL AGENTS 57
G.1 GENERAL 57
G.2 ESTABLISHING CONCENTRATION OF CHEMICAL AGENTS FOR TEST GASES 1 TO 9 57
G.3 VERIFICATION OF TEST CHAMBER LEAKAGE 57
G.4 ESTABLISHING CONCENTRATION OF OZONE 57
ANNEX H (INFORMATIVE) APPARATUS FOR IMPACT TEST 59
H.1 GENERAL 59
H.2 APPARATUS CONSTRUCTION 59
ANNEX I (INFORMATIVE) INFORMATION CONCERNING TEST PROCEDURES AND
ASSESSMENT FOR THE RESPONSE TO SLOWLY DEVELOPING FIRES 61
ANNEX J (INFORMATIVE) TEST SCHEDULE 65
J.1 GENERAL 65
J.2 PROVISION FOR TESTS 65
J.3 TEST SCHEDULE 65
ANNEX K (INFORMATIVE) SIGNIFICANCE OF EDITION CHANGES 67
K.1 GENERAL 67
K.2 EDITION CHANGES 67
European foreword
This document (prEN 54-26:2024) has been prepared by Technical Committee CEN/TC 72“Fire detection
and fire alarm systems”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 54-26:2015.
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 heat detectors;
— Part 7: Smoke detectors — Point smoke detectors that operate using scattered light, transmitted light
or ionization [the present document];
— 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 and connectability assessment of system components;
— Part 14: Guidelines for planning, design, installation, commissioning, use and maintenance [CEN
Technical Specification];
— 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: Resettable line-type heat detectors [currently at acceptance stage];
— Part 23: Fire alarm devices — Visual alarms devices;
— Part 24: Components of voice alarm systems — Loudspeakers;
— Part 25: Components using radio links;
— Part 26: Carbon monoxide detectors — Point smoke detectors;
— Part 27: Duct smoke detectors;
— Part 28: Non-resettable line type heat detectors;
— Part 29: Multi-sensor fire detectors — Point smoke detectors using a combination of smoke and heat
sensors;
— Part 30: Multi-sensor fire detectors — Point smoke detectors using a combination of carbon
monoxide and heat sensors;
— Part 31: Multi-sensor fire detectors — Point smoke detectors using a combination of smoke, carbon
monoxide and optionally heat sensors;
— Part 32: Planning, design, installation, commissioning, use and maintenance of voice alarm systems.
NOTE This list includes standards that are in preparation and other standards can be added. For current status
of published standards refer to www. cencenelec.eu.
In comparison with the previous edition EN 54-26:2015, the following technical modifications have been
made:
— removal of directional dependence test and requirements for mounting orientation for fire tests and
CO response value measurement have been modified;
— removal of Air Movement test;
— in the Shock (operational) test the peak acceleration has been reduced as agreed by CEN/TC 72;
— in the Exposure to high level of carbon monoxide (operational) test the conditioning is at 500 µl/l to
align with other EN 54 CO standards;
— modifcication of Annex A, Gas test chamber and Annex F, Construction of the gas test chamber. This
allows the use of a diffusion test chamber in addition to the previously specified recirculating test
chamber.
Introduction
Carbon monoxide (CO) is a product of the incomplete combustion of carbon-based materials. CO fire
detectors can react promptly to smouldering fires involving carbonaceous materials because CO does not
depend solely on convection, but also moves by diffusion. CO fire detectors might be better suited to
applications where other fire detection techniques are prone to false alarms, i.e. due to dust, steam and
cooking vapours.
The purpose of this document is to ensure that carbon monoxide (CO) fire detectors have adequate
sensitivity and reliability for use in fire detection and fire alarm systems for residential commercial and
industrial premises. In many fire situations CO is not produced in detectable quantities where pyrolysis
of material rather than self-sustained combustion occurs (e.g. overheating cables) or in the early stages
of rapidly burning flaming fires (e.g. liquid fuel fires). It is important that carbon monoxide fire detectors
are only used where a risk assessment indicates that they are appropriate for detecting the types of fires
that may occur. CO fire detectors should not be considered as a direct replacement for smoke detectors.
CO fire detectors detect carbon monoxide gas rather than the smoke particulates detected by optical and
ionization smoke detectors.
A number of different methods for sensing CO are suitable. However, most sensors will also be influenced
by other gases and phenomena. Tests have therefore been included in the test schedule to assess cross-
sensitivity to substances normally present in the service environment that may affect the performance of
the detector.
As CO detectors are specifically well suited for the detection of incipient fires rather than flaming fires
this document only includes tests to verify performance in smouldering fires. For this purpose, test fires
TF2 and TF3 from EN 54-7 have been included in the test schedule. An additional validity criterion has
been added to each of these tests to make them suitable for evaluating CO fire detectors.
CO detectors are intended to be installed indoors, and only indoor environmental test severities are
specified in the test schedule.
The environmental tests specified in this standard cover normal general conditions. Other directives or
regulations appli
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.