ISO 7240-8:2014
Fire detection and alarm systems — Part 8: Point-type fire detectors using a carbon monoxide sensor in combination with a heat sensor
ISO 7240-8:2015 specifies requirements, test methods, and performance criteria for point multi-sensor fire detectors that incorporate at least one carbon monoxide (CO) sensor in combination with one or more heat sensors, for use in fire detection and alarm systems installed in buildings (see ISO 7240‑1).
For the testing of other types of CO multi-sensor fire detectors, or CO and heat multi-sensor fire detectors working on different principles, this part of ISO 7240 is only to be used for guidance. CO and heat multi-sensor fire detectors with special characteristics and developed for specific risks are not covered by this part of ISO 7240.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
4 Requirements
4.1 Compliance
4.2 Individual alarm indication
4.3 Connection of ancillary devices
4.4 Monitoring of detachable detectors
4.5 Manufacturer’s adjustments
4.6 On-site adjustment of response behaviour
4.7 Rate-sensitive response behaviour
4.8 Requirements for software-controlled detectors
4.8.1 General
4.8.2 Software design
4.8.3 The storage of programs and data
5 Tests
5.1 General
5.1.1 Atmospheric conditions for tests
5.1.2 Mounting arrangements
5.1.3 Operating conditions for tests
5.1.4 Tolerances
5.1.5 Measurement of CO response value
5.1.6 Measurement of heat sensor response value
5.1.7 Provision for tests
5.1.8 Test schedule
5.1.9 Test report
5.2 Repeatability of CO response
5.2.1 Object of the test
5.2.2 Test procedure
5.2.3 Requirements
5.3 Directional dependence of CO response
5.3.1 Object of the test
5.3.2 Test procedure
5.3.3 Requirements
5.4 Directional dependence of heat response
5.4.1 Object of the test
5.4.2 Test procedure
5.4.3 Requirements
5.5 Lower limit of heat sensitivity
5.5.1 Object of the test
5.5.2 Test procedure
5.5.3 Requirements
5.6 Reproducibility of CO response
5.6.1 Object of the test
5.6.2 Test procedure
5.6.3 Requirements
5.7 Reproducibility of heat response
5.7.1 Object of the test
5.7.2 Test procedure
5.7.3 Requirements
5.8 Exposure to chemical agents at environmental concentrations
5.8.1 Object of the test
5.8.2 Test procedure
5.8.3 Requirements
5.9 Long-term stability of CO response
5.9.1 Object of the test
5.9.2 Test procedure
5.9.3 Requirements
5.10 Saturation
5.10.1 Object of the test
5.10.2 Test procedure
5.10.3 Requirements
5.11 Exposure to chemical agents which may be present during a fire
5.11.1 Object of the test
5.11.2 Test procedure
5.11.3 Requirements
5.12 Variation in supply parameters
5.12.1 Object of the test
5.12.2 Test procedure
5.12.3 Requirements
5.13 Air movement
5.13.1 Object of the test
5.13.2 Test procedure
5.13.3 Requirements
5.14 Dry heat (operational)
5.14.1 Object of the test
5.14.2 Test procedure
5.14.3 Requirements
5.15 Dry heat endurance
5.15.1 Object
5.15.2 Test procedure
5.15.3 Requirements
5.16 Cold (operational)
5.16.1 Object of the test
5.16.2 Test procedure
5.16.3 Requirements
5.17 Damp heat, cyclic (operational)
5.17.1 Object
5.17.2 Test procedure
5.17.3 Requirements
5.18 Damp heat, steady-state (endurance)
5.18.1 Object of the test
5.18.2 Test procedure
5.18.3 Requirements
5.19 Low humidity, steady-state (endurance)
5.19.1 Object of the test
5.19.2 Test procedure
5.19.3 Requirements
5.20 Sulfur dioxide SO2 corrosion (endurance)
5.20.1 Object of the test
5.20.2 Test procedure
5.20.3 Requirements
5.21 Shock (operational)
5.21.1 Object of the test
5.21.2 Test procedure
5.21.3 Requirements
5.22 Impact (operational)
5.22.1 Object of the test
5.22.2 Test procedure
5.22.3 Requirements
5.23 Vibration, sinusoidal, (operational)
5.23.1 Object of the test
5.23.2 Test procedure
5.23.3 Requirements
5.24 Vibration, sinusoidal (endurance)
5.24.1 Object of the test
5.24.2 Test procedure
5.24.3 Requirements
5.25 Electromagnetic Compatibility (EMC), Immunity tests (operational)
5.26 Fire sensitivity
5.26.1 Object of the test
5.26.2 Test procedure
6 Test report
7 Marking
8 Data
8.1 Hardware documentation
8.2 Software documentation
Annex A (normative) Gas test chamber for CO response value and cross sensitivity measurements
Annex B (normative) Heat tunnel for response time and response temperature measurements
Annex C (normative) Apparatus for impact test
Annex D (normative) Fire test room
Annex E (normative) Smouldering (pyrolysis) wood fire (TF2)
Annex F (normative) Glowing smouldering cotton fire (TF3)
Annex G (normative) Open plastics (polyurethane) fire (TF4)
Annex H (normative) Liquid (n-heptane) fire (TF5)
Annex I (informative) Information concerning the construction of the gas test chamber
Annex J (informative) Construction of the heat tunnel
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
4 Requirements
4.1 Compliance
4.2 Individual alarm indication
4.3 Connection of ancillary devices
4.4 Monitoring of detachable detectors
4.5 Manufacturer’s adjustments
4.6 On-site adjustment of response behaviour
4.7 Rate-sensitive response behaviour
4.8 Requirements for software-controlled detectors
4.8.1 General
4.8.2 Software design
4.8.3 The storage of programs and data
5 Tests
5.1 General
5.1.1 Atmospheric conditions for tests
5.1.2 Mounting arrangements
5.1.3 Operating conditions for tests
5.1.4 Tolerances
5.1.5 Measurement of CO response value
5.1.6 Measurement of heat sensor response value
5.1.7 Provision for tests
5.1.8 Test schedule
5.1.9 Test report
5.2 Repeatability of CO response
5.2.1 Object of the test
5.2.2 Test procedure
5.2.3 Requirements
5.3 Directional dependence of CO response
5.3.1 Object of the test
5.3.2 Test procedure
5.3.3 Requirements
5.4 Directional dependence of heat response
5.4.1 Object of the test
5.4.2 Test procedure
5.4.3 Requirements
5.5 Lower limit of heat sensitivity
5.5.1 Object of the test
5.5.2 Test procedure
5.5.3 Requirements
5.6 Reproducibility of CO response
5.6.1 Object of the test
5.6.2 Test procedure
5.6.3 Requirements
5.7 Reproducibility of heat response
5.7.1 Object of the test
5.7.2 Test procedure
5.7.3 Requirements
5.8 Exposure to chemical agents at environmental concentrations
5.8.1 Object of the test
5.8.2 Test procedure
5.8.3 Requirements
5.9 Long-term stability of CO response
5.9.1 Object of the test
5.9.2 Test procedure
5.9.3 Requirements
5.10 Saturation
5.10.1 Object of the test
5.10.2 Test procedure
5.10.3 Requirements
5.11 Exposure to chemical agents which may be present during a fire
5.11.1 Object of the test
5.11.2 Test procedure
5.11.3 Requirements
5.12 Variation in supply parameters
5.12.1 Object of the test
5.12.2 Test procedure
5.12.3 Requirements
5.13 Air movement
5.13.1 Object of the test
5.13.2 Test procedure
5.13.3 Requirements
5.14 Dry heat (operational)
5.14.1 Object of the test
5.14.2 Test procedure
5.14.3 Requirements
5.15 Dry heat endurance
5.15.1 Object
5.15.2 Test procedure
5.15.3 Requirements
5.16 Cold (operational)
5.16.1 Object of the test
5.16.2 Test procedure
5.16.3 Requirements
5.17 Damp heat, cyclic (operational)
5.17.1 Object
5.17.2 Test procedure
5.17.3 Requirements
5.18 Damp heat, steady-state (endurance)
5.18.1 Object of the test
5.18.2 Test procedure
5.18.3 Requirements
5.19 Low humidity, steady-state (endurance)
5.19.1 Object of the test
5.19.2 Test procedure
5.19.3 Requirements
5.20 Sulfur dioxide SO2 corrosion (endurance)
5.20.1 Object of the test
5.20.2 Test procedure
5.20.3 Requirements
5.21 Shock (operational)
5.21.1 Object of the test
5.21.2 Test procedure
5.21.3 Requirements
5.22 Impact (operational)
5.22.1 Object of the test
5.22.2 Test procedure
5.22.3 Requirements
5.23 Vibration, sinusoidal, (operational)
5.23.1 Object of the test
5.23.2 Test procedure
5.23.3 Requirements
5.24 Vibration, sinusoidal (endurance)
5.24.1 Object of the test
5.24.2 Test procedure
5.24.3 Requirements
5.25 Electromagnetic Compatibility (EMC), Immunity tests (operational)
5.26 Fire sensitivity
5.26.1 Object of the test
5.26.2 Test procedure
6 Test report
7 Marking
8 Data
8.1 Hardware documentation
8.2 Software documentation
Annex A (normative) Gas test chamber for CO response value and cross sensitivity measurements
Annex B (normative) Heat tunnel for response time and response temperature measurements
Annex C (normative) Apparatus for impact test
Annex D (normative) Fire test room
Annex E (normative) Smouldering (pyrolysis) wood fire (TF2)
Annex F (normative) Glowing smouldering cotton fire (TF3)
Annex G (normative) Open plastics (polyurethane) fire (TF4)
Annex H (normative) Liquid (n-heptane) fire (TF5)
Annex I (informative) Information concerning the construction of the gas test chamber
Annex J (informative) Construction of the heat tunnel