EN 54-30 Fire detection and fire alarm systems – Part 30: Multi-sensor fire detectors – Point detectors using a combination of carbon monoxide and heat sensors

1 Scope
This European Standard specifies requirements, test methods and performance criteria for point-type multi- sensor fire detectors for use in fire detection systems installed in and around buildings (see EN 54-1:2011), incorporating in one mechanical enclosure at least one carbon monoxide sensor and at least one heat sensor and where the overall fire detection performance is determined utilizing the combination of the detected phenomena.
This European Standard provides for the assessment and verification of consistency of performance (AVCP) of multi-sensor fire detectors using a combination of carbon monoxide and heat sensors to this EN.
Multi-sensor fire detectors using carbon monoxide and heat sensors having special characteristics suitable for the detection of specific fire risks are not covered by this European Standard. The performance requirements for any additional functions are beyond the scope of this standard (e.g. additional features or enhanced functionality for which this European Standard does not define a test or assessment method).

2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 54-1:2011, Fire detection and fire alarm systems — Part 1: Introduction
EN 54-5:2000 , Fire detection and fire alarm systems — Part 5: Heat detectors – Point detectors
EN 54-7:2000 , Fire detection and fire alarm systems — Part 7: Smoke detectors — Point detectors using scattered light, transmitted light or ionization
EN 50130-4:2011, 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 60068-1:2014, Environmental testing — Part 1: General and guidance (IEC 60068-1:2013)
EN 60068-2-1:2007, Environmental testing — Part 2-1: Tests — Test A: Cold (IEC 60068-2-1:2007)
EN 60068-2-2:2007, Environmental testing — Part 2-2: Tests — Test B: Dry heat (IEC 60068-2-2:2007)
EN 60068-2-6:2008, Environmental testing — Part 2-6: Tests — Test Fc: Vibration (sinusoidal) (IEC 60068-2-6:2007)
EN 60068-2-27:2009, Environmental testing — Part 2-27: Tests — Test Ea and guidance: Shock (IEC 60068¬2-27:2008)
EN 60068-2-30:2005, Environmental testing — Part 2-30: Tests — Test Db: Damp heat, cyclic (12 h + 12 h cycle) (IEC 60068-2-30:2005)
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 60068-2-78:2013, Environmental testing — Part 2-78: Tests — Test Cab: Damp heat, steady state (IEC 60068-2-78:2012)
ISO 209:2007, Wrought aluminium and aluminium alloys — Chemical composition and forms of products — Part 1: Chemical composition

3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 54-1:2011 and the following apply.
3.1.1
CO response value
CO concentration in the proximity of the specimen at the moment that it generates an alarm signal
Note 1 to entry: When tested as described in 5.1.5.
Note 2 to entry: The response value may depend on signal processing in the detector and in the control and indicating equipment.
3.1.2
rate-sensitive
behaviour of a detector that depends on the rate of change of CO concentration
3.2 Abbreviations
EMC electromagnetic compatibility
4 Requirements
4.1 General
In order to conform to this standard, the detector shall meet the requirements of this clause, which shall be verified by visual inspection or engineering assessment or shall be tested as described in Clause 5 and shall meet the requirements of the tests
4.2 /sensitivity 4.2.1 Individual alarm indication
Each detector shall be provided with an integral red visual indicator, by which the individual detector that released the alarm can be identified, until the alarm condition is reset. Where other conditions of the detector can be visually indicated, they shall be clearly distinguishable from the alarm indication, except when the detector is switched into a service mode. For detachable detectors, the indicator may be integral with the base or the detector head. The visual indicator shall be visible from a distance of 6 m directly below the detector, in an ambient light intensity up to 500 lux when assessed as described in 5.2.1.
4.2.2 Rate sensitive CO response
The CO response value of the detector may depend on the rate of change of CO concentration in the vicinity of the detector. Such behaviour may be incorporated in the detector design to improve the discrimination between ambient CO levels and those generated by a fire. If such rate sensitive behaviour is included then it shall not lead to a significant reduction in the detector’s sensitivity to fires, nor to a significant increase in the probability of a false alarm when assessed as specified in 5.2.2.
4.2.3 Response to slowly developing fires
Carbon monoxide detectors may incorporate provision for “drift compensation”, for example to compensate for sensor drift due to the ageing of the CO sensor or the build-up of contaminants in the detector, If such drift compensation is included, then it shall not lead to a significant change in the detector’s sensitivity to slowly developing fires when assessed as specified in 5.2.3.
4.2.4 Repeatability of CO response
The detector shall have stable behaviour with respect to its sensitivity to CO after a number of alarm conditions and shall meet the requirements specified in 5.2.4.
4.2.5 Directional dependence of CO response
The sensitivity of the detector to CO shall not be unduly dependent on the direction of airflow around it and shall meet the requirements specified in 5.2.5.
4.2.6 Directional dependence of heat response
The heat sensitivity of the detector shall not be unduly dependent on the direction of airflow around it and shall meet the requirements specified in 5.2.6.
4.2.7 Lower limit of heat response
The detector shall not be more sensitive to heat alone, without the presence of CO, than is permitted in EN 54-5 and shall meet the requirements specified in 5.2.7.
4.2.8 Reproducibility of CO response
The sensitivity of the detector to CO shall not vary unduly from specimen to specimen and shall meet the requirements specified in 5.2.8.
4.2.9 Reproducibility of heat response
The heat sensitivity of the detector shall not vary unduly from specimen to specimen and shall meet the requirements specified in 5.2.9.
4.2.10 Air movement
The sensitivity of the detector to CO shall not be unduly affected by the rate of the airflow and shall meet the requirements specified in 5.2.10.
4.3 Operational reliability
4.3.1 Connection of ancillary devices
Where the detector provides for connections to ancillary devices (e.g. remote indicators, control relays), open- or short-circuit failures of these connections shall not prevent the correct operation of the detector.
4.3.2 Monitoring of detachable detectors
For detachable detectors, a means shall be provided for a remote monitoring system (e.g. the control and indicating equipment) to detect the removal of the head from the base, in order to give a fault signal.
4.3.3 Manufacturer’s adjustments
It shall be possible to change the manufacturer’s settings only by special means (e.g. the use of a special code or tool) or by breaking or removing a seal.
4.3.4 On-site adjustment of behaviour
If there is provision for on-site adjustment of the response behaviour of the detector then:
4.3.5 Software-controlled detectors
4.3.5.1 General
For detectors which rely on software control in order to fulfil the requirements of this standard, the requirements of 4.3.5.2, 4.3.5.3 and 4.3.5.4 shall be met.
4.3.5.2 Software documentation 4.3.5.2.1 Design overview
Documentation shall be submitted that gives an overview of the software design. This documentation shall be in sufficient detail for the design to be inspected for compliance with this standard and shall include at least the following:
Software design
In order to ensure the reliability of the detector, the following requirements for software design shall apply:
a) the software shall have a modular structure;
b) the design of the interfaces for manually and automatically generated data shall not permit invalid data to cause error in the program operation;
c) the software shall be designed to avoid the occurrence of deadlock of the program flow.
4.3.5.4 The storage of programs and data
The program necessary to conform to this standard and any pre-set data, such as manufacturer’s settings, shall be held in non-volatile memory. Writing to areas of memory containing this program and data shall only be possible by the use of some special tool or code and shall not be possible during normal operation of the detector.
Site-specific data shall be held in memory which will retain data for at least two weeks without external power to the detector, unless provision is made for the automatic renewal of such data, following loss of power, within 1 h of power being restored.
4.3.6 Long-term stability
The detectors shall be stable over long periods of time and shall meet the requirements specified in 5.3.6.3.
4.4 Tolerance to supply voltage — Variation in supply parameters
Within the specified range(s) of the supply parameters, the sensitivity of the detector shall not be unduly dependent on these parameters (e.g. voltage) and shall meet the requirements specified in 5.4.
4.5 Performance parameters under fire conditions — Fire sensitivity
The detector shall have adequate sensitivity to incipient type fires that may occur in buildings and meet the fire test requirements specified in 5.5.
4.6 Durability of nominal activation/sensitivity
4.6.1 Temperature resistance
4.6.1.1 Dry heat (operational)
The detector shall function correctly at high ambient temperatures as specified in 5.6.1.1.
4.6.1.2 Dry heat (endurance)
The detector shall be capable of withstanding long term exposure to high temperature as specified in 5.6.1.2.
4.6.1.3 Cold (operational)
The detector shall function correctly at low ambient temperatures, as specified in 5.6.1.3.
4.6.2 Humidity resistance
4.6.2.1 Damp heat, cyclic (operational)
The detector shall function correctly at a high level of relative humidity with short period of condensation, as specified in 5.6.2.1.
4.6.2.2 Damp heat, steady-state (operational)
The detector shall function correctly at high relative humidity (without condensation) as specified in 5.6.2.2.
4.6.2.3 Damp heat, steady-state (endurance)
The detector shall be capable of withstanding Long-term exposure to a high level of continuous humidity as specified in 5.6.2.3.
4.6.2.4 Low humidity, steady-state (operational)
The detector shall function correctly at low relative humidity as specified in 5.6.2.4.
4.6.3 Corrosion resistance — SO2 corrosion (endurance)
The detector shall be capable of withstanding the corrosive effects of sulphur dioxide as an atmospheric pollutant as specified in 5.6.3.
4.6.4 Shock and vibration resistance
4.6.4.1 Shock (operational)
The detector shall function correctly when submitted to mechanical shocks which are likely to occur in the service environment as specified in 5.6.4.1.
4.6.4.2 Impact (operational)
The detector shall function correctly when submitted to mechanical impacts which it may sustain in the normal service environment as specified in 5.6.4.2.
4.6.4.3 Vibration, sinusoidal (operational)
The detector shall function correctly when submitted to vibration at levels appropriate to its normal service environment as specified in 5.6.4.3.
4.6.4.4 Vibration, sinusoidal (endurance)
The detector shall be capable of withstanding long exposure to vibration at levels appropriate to the service environment as specified in 5.6.4.4.
4.6.5 Electrical stability — EMC, immunity (operational)
The detector shall operate correctly when submitted to electromagnetic interference as specified in 5.6.5.
4.6.6 Resistance to chemical agents
4.6.6.1 Exposure to high level of carbon monoxide
The detector shall be capable to withstand exposure to high levels of CO which may be encountered during a fire condition and meet the requirements specified in 5.6.6.1.
4.6.6.2 Exposure to chemical agents at environmental concentrations
The detector shall be capable of withstanding the effects of exposure to atmospheric pollutants or chemicals which may be encountered in the service environment as specified in 5.6.6.2.
5 Test and evaluation methods 5.1 General
5.1.1 Atmospheric conditions for tests
Unless otherwise stated in a test procedure, the testing shall be carried out after the test specimen has been allowed to stabilize in the standard atmospheric conditions for testing as described in EN 60068-1 as follows:
If variations in these parameters have a significant effect on a measurement, then such variations should be kept to a minimum during a series of measurements carried out as part of one test on one specimen.
The ambient concentration of CO shall not exceed 3 ^l/l.
5.1.2 Operating conditions for tests
If a test method requires a specimen to be operational, then the specimen shall be connected to suitable supply and monitoring equipment with characteristics as required by the manufacturer’s data. Unless otherwise specified Mounting arrangements
The specimen shall be mounted by its normal means of attachment and in its normal orientation in accordance with the manufacturer’s instructions. If these instructions describe more than one method of mounting, or more than one acceptable orientation, then the method considered to be most unfavourable shall be chosen for each test.
5.1.3 Tolerances
Unless otherwise stated, the tolerances for the environmental test parameters shall be as given in the basic reference standards for the test (e.g. the relevant part of EN 60068).
If a requirement or test procedure does not specify a tolerance or deviation limits, then deviation limits of ± 5 % shall be applied.
5.1.4 Measurement of CO response value
The specimen, for which the CO response value shall be measured, shall be installed in the gas test chamber, described in Annex A, in its normal operating position, by its normal means of attachment. The orientation of the specimen, relative to the direction of airflow, shall be the least sensitive orientation, as determined in the directional dependence test (5.2.5), unless otherwise specified in the test procedure.
Before commencing each measurement, the gas test chamber shall be purged with clean air to ensure that the concentration of CO in the gas test chamber is less than 1,5 ^l/l.
The air velocity in the proximity of the specimen shall be (0,2 ± 0,04) m/s during the measurement, unless Measurement of heat response value
Where detectors conform to EN 54-5 , the response times measured in those tests may be used as the heat response values for the purposes of this standard.
The specimen for which the temperature response value shall be measured shall be installed in a heat tunnel, as specified in Annex E, in its normal operating position, by its normal means of attachment. The orientation of the specimen, relative to the direction of airflow, shall be the least sensitive one, as determined in the directional dependence test (5.2.6), unless otherwise specified in the test procedure.
The specimen shall be connected to its supply and indicating equipment as specified in 5.1.2, and allow it to stabilize for at least 15 min.
The measured heat response value shall be recorded as T.
5.1.5 Provision for tests
The following shall be provided for testing compliance with this standard:
This implies that the mean response value of the 28 specimens found in the reproducibility tests, 5.2.8 and 5.2.9, should also represent the production mean, and that the limits specified in the reproducibility test should also be applicable to the full sensitivity range anticipated during production.
5.1.8 Test schedule
The specimens shall be tested according to the following test schedule (see Table 1). After the reproducibility of CO response test, the six least sensitive specimens (i.e. those with the highest CO response values) shall be numbered 23 to 28, and the others shall be numbered 1 to 22 arbitrarily.
5.2 Nominal activation conditions/sensitivity
5.2.1 Individual alarm indication
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for individual alarm indication as specified in 4.2.1.
The specimen shall be checked for adequate visibility in an ambient light intensity of 500 lux.
5.2.2 Rate sensitive CO response
The behaviour of the CO fire detector to rate sensitive CO response shall be assessed to meet the requirements in 4.2.2 by analysis of the circuit/software, and/or by physical tests and simulations.
NOTE This approach is used as it is not practical to make tests with all possible rates of increase in CO concentration.
The detector shall be deemed to conform to the requirements of 4.2.2 if the assessment carried out shows that the detector will not signal an alarm condition when subjected to a step change in CO concentration of 10 ^l/l, superimposed on a background level between 0 and 1,5 ^l/l.
5.2.3 Response to slowly developing fire
The behaviour of the CO fire detector to slowly developing fires shall be assessed to meet the requirements of 4.2.3 by analysis of the circuit/software, and/or by physical tests and simulations.
5.2.4 Repeatability of CO response
5.2.4.1 Object
To show that the detector has stable behaviour with respect to its sensitivity to CO even after a number of alarm conditions.
5.2.4.2 Test procedure
The response value of the specimen to be tested shall be measured as described in 5.1.5 six times.
The specimen’s orientation relative to the direction of airflow is arbitrary, but it shall be the same for all six measurements.
The maximum response value shall be designated Smax, the minimum value shall be designated Smin.
5.2.5 Directional dependence of CO response
5.2.5.1 Object
To confirm that the sensitivity of the detector to CO is not unduly dependent on the direction of airflow around the detector.
5.2.5.2 Test procedure
The response value of the specimen to be tested shall be measured eight times as described in 5.1.5, the specimen being rotated 45° about its vertical axis between each measurement, so that the measurements are taken for eight different orientations relative to the direction of air flow.
The maximum response value shall be designated Smax, the minimum value shall be designated Smin
5.2.5.3 Requirements
The detector shall be deemed to conform to the requirements of 4.2.5 if:
5.2.6 Directional dependence of heat response
5.2.6.1 Object of test
To confirm that the heat sensitivity of the detector is not unduly dependent on the direction of airflow around the detector.
5.2.6.2 Test procedure
The heat response value of the specimen shall be tested eight times as specified in 5.1.6 at a rate of rise of air temperature of 10 K/min, the specimen being rotated about a vertical axis by 45° between each measurement, so that the measurements are taken for eight different orientations relative to the direction of airflow. The specimen shall be stabilized at 25 °C before each measurement.
The heat response value at each of the eight orientations shall be recorded.
The maximum heat response value shall be designated as Tmax; the minimum value as Tmin.
The maximum heat response value and the minimum heat response value orientations shall be recorded. The orientation for which the maximum response time was measured is referred to as the least sensitive heat orientation. The orientation for which the minimum response time was measured is referred to as the most sensitive heat orientation.
5.2.7 Lower limit of heat response
5.2.7.1 Object of the test
5.2.7.2 Test procedure
Measure the heat response value of the specimen to be tested, in its most sensitive orientation, using the methods described in EN 54-5:20005), 5.3 and 5.4, but with the test being terminated when an air temperature of 55 °C has been reached. For the purposes of these tests, the test parameters for Class A1 detectors shall be used.
5.2.7.3 Requirements
The detector shall be deemed to conform to the requirements of 5.2.7:
5.2.8 Reproducibility of CO response
5.2.8.1 Object
To show that the sensitivity of the detector to CO does not vary unduly from specimen to specimen and to establish CO response value data for comparison with the CO response values measured after the environmental tests.
5.2.8.2 Test procedure
The response value of each of the test specimens shall be measured as described in 5.1.5.
The mean of these response values shall be calculated and shall be designated S .
The maximum response value shall be designated Smax and the minimum value shall be designated Smin.
5.2.8.3 Requirements
The detector shall be deemed to conform to the requirements of 5.2.8 if:
5.2.9 Reproducibility of heat response
5.2.9.1 Object of the test
To show that the heat sensitivity of the detector does not vary unduly from specimen to specimen and to establish heat response value data for comparison with the heat response values measured after the environmental tests.
5.2.9.2 Test procedure
Measure the heat response value of each of the test specimens as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min and record the heat response value.
Designate the maximum heat response value as Tmax; the minimum value as Tmin.
5.2.9.3 Requirements
The detector shall be deemed to conform to the requirements of 5.2.9 if the ratio AT of the heat response values
5.2.10 Air movement
5.2.10.1 Object
To show that the sensitivity of the detector is not unduly affected by the rate of airflow.
5.2.10.2 Test procedure
The response value of the specimen to be tested shall be measured as described in 5.1.5 in the most and least sensitive orientations, and shall be appropriately designated S(0,2)min and S(0i2)max.
These measurements shall then be repeated but with an air velocity, in the proximity of the detector, of (1 ± 0,2) m/s. The response values in these tests shall be designated S(10)min and S(10)max.
5.2.10.3 Requirements
The detector shall be deemed to conform to the requirements of 5.2.10 if:
S

b) the lowest response values from S^mm and S(10)min shall not be less than 25 ^l/l. 5.3 Operational reliability
5.3.1 Connection of ancillary devices
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for individual alarm indication specified in 4.3.1.
5.3.2 Monitoring of detachable detectors
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for individual alarm indication specified in 4.3.2.
5.3.3 Manufacturer’s adjustments
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for individual alarm indication specified in 4.3.3.
5.3.4 On-site adjustment of behaviour
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for individual alarm indication specified in 4.3.4.
5.3.5 Software controlled devices
For detectors that rely on software for their operation, an assessment of the documentation provided by the manufacturer shall be conducted to verify that the device complies with the requirements specified in 4.3.5.
5.3.6 Long-term stability (operational)
5.3.6.1 Object
To confirm that the detectors are stable over long periods of time.
5.3.6.2 Test procedure
During the duration of the test the detector shall be connected to suitable supply and monitoring equipment and shall be placed in laboratory atmospheric conditions (see 5.1.1).
The response value shall be measured, as described in 5.1.5, after 84 d from the start of the test.
5.3.6.3 Requirements
The detector shall be deemed to conform to the requirements of 4.3.6 if:
5.4 Tolerance to supply voltage — Variations in supply parameters
5.4.1 Object
To show that, within the specified range(s) of the supply parameters (e.g. voltage), the sensitivity of the detector is not unduly dependent on these parameters.
5.4.2 Test procedure
The CO response value of the specimen shall be tested as specified in 5.1.5, at the upper and lower limits of the supply parameter (e.g. voltage) range(s) specified by the manufacturer.
The maximum response value shall be designated as Smax; the minimum value as Smin.
The heat response value of the specimen shall be tested as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min at the upper and lower limits of the supply parameter (e.g. voltage) range(s) specified by the manufacturer.

5.4.3 Requirements
The detector shall be deemed to conform to the requirements of 4.4 if:
5.5 Performance parameters under fire conditions — Fire sensitivity
5.5.1 Object
To show that the detector has adequate sensitivity to incipient type fires for application in fire detection systems for buildings.
5.5.2 Principle
The specimens are mounted in a standard fire test room (see Annex B) and are exposed to a series of test fires designed to produce smoke, CO and heat.
5.5.3 Test procedure
5.5.3.1 Fire test room
The fire sensitivity tests shall be conducted in a rectangular room with a flat horizontal ceiling, and the following dimensions:
5.5.3.2 Test fires
The specimens shall be subjected to four test fires, TF2, TF3, TF4 and TF5 from EN 54-7 . The type, quantity and arrangement of the fuel and the method of ignition are described in Annex F, Annex G, Annex H and Annex I, along with the end of test condition and the required profile curve limits.
In order to be a valid test fire, the development of the fire shall be such that the profile curves of m againsty, m against time, and S against time fall within the specified limits, up to the time when all of the specimens have generated an alarm signal or the end of test condition is reached, whichever is the earlier. If these conditions are not met then the test is invalid and shall be repeated. It is permissible, and may be necessary, to adjust the quantity, condition (e.g. moisture content) and arrangement of the fuel to obtain valid test fires.
5.5.3.3 Mounting of the specimens
The six specimens (Nos. 23, to 28) shall be mounted on the fire test room ceiling in the designated area (see Annex B). The specimens shall be mounted in accordance with the manufacturer’s instructions. Specimens 25 to 28 shall be mounted such that specimens are in the least sensitive orientation for CO and specimens 23 and 24 shall be mounted in the least sensitive orientation for heat, relative to an assumed airflow from the centre of the room to the specimen.
5.5.3.4 Initial conditions
Before each test fire, the room shall be purged with clean air. The ventilation system shall then be switched off and all doors, windows and other openings shall be closed. The air in the room shall then be allowed to stabilize, and the following conditions shall be obtained before the test is started:
(23 ± 5) °C; negligible; y < 0,05; m < 0,02 dB m-1; S < 3 |jl/l
air temperature T: air movement: smoke density (ionization): smoke density (optical): CO concentration

The stability of the air, and temperature gradients, affect the flow of smoke and CO within the room. This is particularly important for test fires TF2 and TF3 which produce low thermal lift for the smoke and CO. It is therefore recommended that the difference between the temperature near the floor and the ceiling is < 2 K, and that local heat sources that can cause convection currents (e.g. lights and heaters) should be avoided. Unless it is necessary for people to be in the room at the beginning of a test fire, they should leave as soon as possible, taking care to produce the minimum disturbance to the air.
5.5.3.5 Recording of the fire parameters and response values
During each test fire, the following fire parameters shall be recorded continuously or at least once per second.
The alarm signal given by the supply and monitoring equipment shall be taken as the indication that a specimen has responded to the test fire.
The time of response of each specimen shall be recorded along with the fire parameters y, m, S, and AT at the moment of response.
5.5.4 Requirements
The detector shall be deemed to conform to the requirements of 4.5 if all four specimens generate an alarm signal, in each test fire, before the specified end of test condition is reached.
5.6 Durability
5.6.1 Temperature resistance
5.6.1.1 Dry heat (operational)
5.6.1.1.1 Object
To demonstrate the ability of the detector to function correctly at high ambient temperatures appropriate to the anticipated service environment.
5.6.1.1.2 Test procedure
The specimen to be tested shall be installed in the gas test chamber described in Annex A, in its least sensitive orientation, with an initial air temperature of (23 ± 5) °C, and shall be connected to its supply and monitoring equipment.
5.6.1.1.3 Requirements
The detector shall be deemed to conform to the requirements of 4.6.1.1 if:
5.6.1.2 Dry heat (endurance) 5.6.1.2.1 Object
To demonstrate the ability of the detector to withstand the Long-term effects of high temperature in the service environment. (e.g. changes in electrical properties of materials, chemical reactions, etc.).
5.6.1.2.2 Test procedure
5.6.1.2.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-2. Tests for non heat-dissipating specimens (i.e. Tests Ba or Bb) will be applicable. Test Ba (with sudden changes in temperature) may be used, to improve test economy, if it is known that the sudden change in temperature will not be detrimental to the specimen.
5.6.1.2.2.2 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 but shall not be supplied with power during the conditioning.
5.6.1.2.2.3 Conditioning
The following conditioning shall be applied:
5.6.1.2.2.4 Final measurements
After a recovery period, of between 1 h and 2 h in standard laboratory conditions, the CO response value shall be measured as described in 5.1.5.
The greater of the CO response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Smax and the lesser shall be designated Smin.
The heat response value of the specimen shall be tested as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min at the upper and lower limits of the supply parameter (e.g. voltage) range(s) specified by the manufacturer.
The maximum heat response value shall be designated as Tmax; the minimum value as Tmin.
5.6.1.2.3 Requirements
The detector shall be deemed to conform to the requirements of 4.6.1.2 if:
5.6.1.3 Cold (operational)
5.6.1.3.1 Object
To demonstrate the ability of the detector to function correctly at low ambient temperatures appropriate to the anticipated service environment.
5.6.1.3.2 Test procedure
5.6.1.3.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-1, Test Ab and as described below.
5.6.1.3.2.2 State of the specimen during conditioning
The specimen to be tested shall be installed in the gas test chamber described in Annex A, in its least sensitive orientation, with an initial air temperature of (23 ± 5) °C, and shall be connected to its supply and monitoring equipment.
5.6.1.3.2.3 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any alarm or fault signals.
The CO response value shall be measured as specified in 5.1.5, except that the air temperature in the gas test chamber shall be (-10 ± 3) °C.
5.6.1.3.2.4 Final measurements
After a recovery period of between 1 h and 2 h at the standard atmospheric conditions, the heat response value shall be measured as described in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response values measured in this test and that measured for the same specimen in the reproducibility test shall be designated as Tmax the lesser as Tmin.
5.6.1.3.3 Requirements
The detector shall be deemed to conform to the requirements of 4.6.1.3 if:
5.6.2 Humidity resistance
5.6.2.1 Damp heat, cyclic (operational)
5.6.2.1.1 Object
To demonstrate the ability of the detector to function correctly at high relative humidity, with condensation, which can occur for short periods in the anticipated service environment.
5.6.2.1.2 Test procedure
5.6.2.1.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-30, using the Variant 2 test cycle and controlled recovery conditions, and as described below.
5.6.2.1.2.2 State of the specimen during conditioning
The specimen to be tested shall be mounted as described in 5.1.3 and shall be connected to supply and monitoring equipment as described in 5.1.2.
5.6.2.1.2.3 Conditioning
The following severity of conditioning shall be applied:
5.6.2.1.2.4 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any alarm or fault signals.
5.6.2.1.2.5 Final measurements
After a recovery period of at least 1 h at standard atmospheric conditions (5.1.1), the CO response value of the specimen shall be measured as described in 5.1.5.
The greater of the CO response values measured in this test and that measured for the same specimen in the reproducibility test shall be designated Smax and the lesser shall be designated Smin.
The heat response value shall be measured as described in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response values measured in this test and that measured for the same specimen in the reproducibility test shall be designated as Tmax and the lesser as Tmin.
5.6.2.1.3 Requirements
The detector shall be deemed to conform to the requirements of 4.6.2.1 if:
5.6.2.2 Damp heat, steady-state (operational)
5.6.2.2.1 Object
To demonstrate the ability of the detector to function correctly at high relative humidity (without condensation) that may occur for short periods in the service environment.
5.6.2.2.2 Test procedure
5.6.2.2.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-78, Test Cab and as described below.
5.6.2.2.2.2 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 and shall be connected to supply and monitoring equipment as described in 5.1.2.
5.6.2.2.2.3 Conditioning
The following conditioning shall be applied using a saturated solution of potassium sulphate can be used to maintain the required relative humidity inside a sealed enclosure.
NOTE The relative humidity of (96,5 ± 0,5) % is intrinsic to the salt solution used. There is no need to measure humidity level during the test.
In order to minimize the risk of condensation, it is recommended that the test specimen is conditioned at 40 °C prior to being introduced in the gas test chamber.
5.6.2.2.2.4 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any alarm or fault signals.
During the last hour of the conditioning period, the CO response value shall be measured as described in 5.1.5.
The greater of the CO response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Smax and the lesser shall be designated Smin.
5.6.2.2.2.5 Final measurements
After a recovery period of between 1 h and 2 h at the standard atmospheric conditions, the heat response value shall be measured as described in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response values measured in this test and that measured for the same specimen in the reproducibility test shall be designated as Tmax and the lesser as Tmin.
5.6.2.2.3 Requirements
The detector shall be deemed to conform to the requirements of 4.6.2.2 if:

5.6.2.3 Damp heat, steady-state (endurance)
5.6.2.3.1 Object
To demonstrate the ability of the detector to withstand the long-term effects of humidity in the service environment (e.g. changes in electrical properties of materials, chemical reactions involving moisture, galvanic corrosion, dilution and expansion of cell electrolyte).
5.6.2.3.2 Test procedure
5.6.2.3.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-78, Test Cab, and as described below.
5.6.2.3.2.2 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 but shall not be supplied with power during the conditioning.
5.6.2.3.2.3 Conditioning
The following conditioning shall be applied:
5.6.2.3.2.4 Final measurements
After a recovery period, of between 1 h and 2 h in standard laboratory conditions, the CO response value shall be measured as described in 5.1.5 and the heat response value shall be measured as described in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the CO response value measured in this test and that measured for the same specimen in the reproducibility test, shall be designated Smax, and the lesser shall be designated Smin.
The greater of the heat response values measured in this test and that measured for the same specimen in the reproducibility test shall be designated as Tmax and the lesser as Tmin.
5.6.2.3.3 Requirements
The detector shall be deemed to conform to the requirements of 4.6.2.3 if:
5.6.2.4 Low humidity, steady-state (operational)
5.6.2.4.1 Object
To demonstrate the ability of the detector to function correctly at low relative humidity which may occur for long periods in the service environment.
5.6.2.4.2 Test procedure
5.6.2.4.2.1 State of the specimen during conditioning
The specimen shall be mounted in the gas test chamber as described in 5.1.3 and shall be connected to supply and monitoring equipment as described in 5.1.2.
5.6.2.4.2.2 Conditioning
The following conditioning shall be applied using a saturated solution of lithium chloride inside a sealed enclosure.
5.6.2.4.2.3 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any alarm or fault signals.
During the last hour of the conditioning period, the CO response value shall be measured as described in 5.1.5.
The greater of the CO response value measured during conditioning in this test and that measured for the same specimen in the reproducibility test, shall be designated S1max and the lesser shall be designated S1min.
5.6.2.4.2.4 Final measurements
After a recovery period, of between 1 h and 2 h in standard laboratory conditions, the CO response value shall be measured as described in 5.1.5.
The greater of the CO response value measured after the recovery period in this test and that measured for the same specimen in the reproducibility test, shall be designated S2max, and the lesser shall be designated
S2min.
5.6.2.4.3 Requirements
The detector shall be deemed to conform to the requirements of 4.6.2.4 if:
a) 5.6.3 Corrosion resistance — Sulphur dioxide SO2 corrosion (endurance)
5.6.3.1 Object
To demonstrate the ability of the detector to withstand the corrosive effects of Sulphur dioxide as an atmospheric pollutant.
5.6.3.2 Test procedure
5.6.3.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-42, Test Kc, except that the conditioning shall be as described below.
5.6.3.2.2 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3. It shall not be supplied with power during the conditioning, but, unless it is radio-linked, it shall have untinned copper wires, of the appropriate diameter, connected to sufficient terminals, to allow the final measurement to be made, without making further connections to the specimen.

Immediately after the conditioning, the specimen shall be subjected to a drying period of 16 h at (40 ± 2) °C, < 50 % RH, followed by a recovery period of at least 1 h at the standard laboratory conditions. After this, the CO response value shall be measured as described in 5.1.5.and the heat response value shall be measured as described in 5.1.6.
The greater of the CO response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Smax and the lesser shall be designated Smin.
The greater of the heat response values measured in this test and that measured for the same specimen in the reproducibility test shall be designated as Tmax and the lesser as Tmin.
5.6.3.3 Requirements
The detector shall be deemed to conform to the requirements of 4.6.3 if:
a) no fault signal, attributable to the endurance conditioning, is given on reconnection of the specimen; and
b) the ratio AS of the CO response values Smax : Smin shall not be greater than 1,6; and
c) the ratio AT of the heat response values Tmax: Tmin is not greater than 1,3; and
d) the lower response value Smin is not less than 25 jl/l. 5.6.4 Shock and vibration resistance
5.6.4.1 Shock (operational)
5.6.4.1.1 Object
To demonstrate the immunity of the detector to mechanical shocks, that are likely to occur, albeit infrequently, in the anticipated service environment.
5.6.4.1.2 Test procedure
5.6.4.1.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-27, Test Ea, for a half sine wave pulse, but with the peak acceleration related to specimen mass as indicated below.
5.6.4.1.2.2 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 to a rigid fixture, and shall be connected to its supply and monitoring equipment as described in 5.1.2.
5.6.4.1.2.3 Measurements during conditioning
The specimen shall be monitored during the conditioning period and for a further 2 min to detect any alarm or fault signals.
5.6.4.1.2.4 Final measurements
After the conditioning, the CO response value shall be measured as described in 5.1.5 and the heat response value shall be measured as described in 5.1.6.
The greater of the CO response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Smax and the lesser shall be designated Smin.
The greater of the heat response values measured in this test and that measured for the same specimen in the reproducibility test shall be designated as Tmax and the lesser as Tmin.
5.6.4.2.1 Object
To demonstrate the immunity of the detector to mechanical impacts upon its surface, which it may sustain in the normal service environment, and which it can reasonably be expected to withstand.
5.6.4.2.2 Test procedure
5.6.4.2.2.1 Apparatus
The test apparatus shall consist of a swinging hammer incorporating a rectangular-section aluminium alloy head (Aluminium alloy Al Cu4 Si Mg conforming to ISO 209, solution treated and precipitation treated condition) with the plane impact face chamfered to an angle of 60° to the horizontal, when in the striking position (i.e. when the hammer shaft is vertical). The hammer head shall be (50 ± 2,5) mm high, (76 ± 3,8) mm wide and (80 ± 4) mm long at mid-height as shown in Figure L.1. A suitable apparatus is described in Annex L.
5.6.4.2.2.2 State of the specimen during conditioning
The specimen shall be rigidly mounted to the apparatus by its normal mounting means and shall be positioned so that it is struck by the upper half of the impact face when the hammer is in the vertical position (i.e. when
the hammerhead is moving horizontally). The azimuthal direction and position of impact, relative to the specimen shall be chosen as that most likely to impair the normal functioning of the specimen.
The specimen shall be connected to its supply and monitoring equipment as described in 5.1.2.
a) no false operations, including alarm or fault signals, attributable to the endurance conditioning, are given on reconnection of the specimen; and
b) the ratio AS of the CO response values Smax : Smin shall not be greater than 1,6; and
c) The ratio AT of the heat response values Tmax : Tmin is not greater than 1,3; and
d) the lower Smin is not less than 25 jl/l. 5.6.4.3 Vibration, sinusoidal, (operational)
5.6.4.3.1 Object
To demonstrate the immunity of the detector to vibration at levels considered appropriate to the normal service environment.
5.6.4.3.2.2 State of the specimen during conditioning
The specimen shall be mounted on a rigid fixture as described in 5.1.3 and shall be connected to its supply and monitoring equipment as described in 5.1.2. The vibration shall be applied in each of three mutually perpendicular axes, in turn. The specimen shall be mounted so that one of the three axes is perpendicular to its normal mounting plane.
5.6.4.3.2.3 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any alarm or fault signals.
5.6.4.3.2.4 Final measurements
The final measurements, as specified in 5.6.4.3.2.4, are normally made after the vibration endurance test and only need be made here if the operational test is conducted in isolation.
5.6.4.4.1 Object
To demonstrate the ability of the detector to withstand the long-term effects of vibration at levels appropriate to the service environment.
5.6.4.4.2 Test procedure 5.6.4.4.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-6, Test Fc, and as described below.
5.6.4.4.2.2 State of the specimen during conditioning
The specimen shall be mounted on a rigid fixture as described in 5.1.3, but shall not be supplied with power during conditioning. The vibration shall be applied in each of three mutually perpendicular axes, in turn. The specimen shall be mounted so that one of the three axes is perpendicular to its normal mounting axis.
The vibration operational and endurance tests may be combined such that the specimen is subjected to the operational test conditioning followed by the endurance test conditioning in one axis before changing to the next axis. Only one final measurement need be made.
5.6.4.4.2.3 Final measurements
After the conditioning the CO response value shall be measured as described in 5.1.5 and the heat response value shall be measured as described in 5.1.6.
The greater of the CO response value measured in this test and that measured for the same specimen in the reproducibility test, shall be designated Smax, and the lesser shall be designated Smin.
The greater of the heat response values measured in this test and that measured for the same specimen in the reproducibility test shall be designated as Tmax and the lesser as Tmin.
5.6.4.4.3 Requirements
The detector shall be deemed to conform to the requirements of 4.6.4.4 if:
5.6.5.2 Test procedure
5.6.5.2.1 Reference
EMC, immunity tests shall be carried out as described in EN 50130-4. The following tests shall be conducted:
a) electrostatic discharge;
b) radiated electromagnetic fields;
c) conducted disturbances induced by electromagnetic fields;
d) fast transient burst;
e) slow high energy voltage surge.
5.6.5.2.2 Conditioning
The test conditions specified in EN 50130-4 for the tests listed in 5.6.5.2.1 shall be applied.
The specimen shall be in the quiescent state for tests during the conditioning in 5.6.5.2.1 a), b), c), d) and e).
The required operating condition shall be as described in 5.1.2.
5.6.5.2.3 Measurement during conditioning
During the conditioning, the specimen shall be monitored to detect for any false operation or fault signals when in the quiescent state.
5.6.5.2.4 Final measurements
5.6.6 Resistance to chemical agents
5.6.6.1 Exposure to high level of carbon monoxide
5.6.6.1.1 Object
To demonstrate the ability of the CO fire detector to withstand exposure to high levels of CO which may be encountered during a fire condition.
5.6.6.1.2 Test procedure
5.6.6.1.2.1 State of the specimen during conditioning
The specimen to be tested shall be installed in the gas test chamber described in Annex A and shall be mounted as described in 5.1.3 and shall be connected to supply and monitoring equipment as described in 5.1.2.
5.6.6.1.2.2 Conditioning
The specimen shall be subjected to an atmosphere containing (500 ± 100) jl/l CO for a period of 1 h.
5.6.6.1.2.3 Measurement during conditioning
1) it signals an alarm or a fault condition.
5.6.6.2 Exposure to chemical agents at environmental concentrations 5.6.6.2.1 Object
To demonstrate the ability of the detector to withstand the effects of exposure to atmospheric pollutants or chemicals which may be encountered in the service environment.
5.6.6.2.2 Test procedure
5.6.6.2.2.1 State of the specimen during conditioning
The specimen to be tested shall be installed in the gas test chamber described in Annex A and shall be mounted as described in 5.1.3 and shall be connected to supply and monitoring equipment as described in 5.1.2.
5.6.6.2.2.2 Conditioning
The specimen shall be subjected to each of the chemical exposures specified in Table 2.
Table 2 — Conditions for exposure to pollutants
NOTE See Annex D for method of establishing exposure levels.
5.6.6.2.2.3 Measurements during conditioning
The specimen shall be monitored during each of the conditioning periods to detect any alarm or fault signals.
5.6.6.2.2.4 Final measurements
After the recovery period specified in Table 2 at standard atmospheric conditions (5.1.1), the CO response value of the specimen shall be measured as described in 5.1.5.
The greater of the CO response values measured in this test and that measured for the same specimen in the reproducibility test shall be designated Smax and the lesser shall be designated Smin.
6 Assessment and verification of constancy of performance (AVCP)
6.1 General
The compliance of multi-sensor fire detectors using a combination of carbon monoxide and heat sensors with the requirements of this Standard and with the performances declared by the manufacturer in the DoP shall be demonstrated by:
— determination of product type,
— factory production control by the manufacturer, including product assessment.
The manufacturer shall always retain the overall control and shall have the necessary means to take responsibility for the conformity with its declared performance(s).
6.2 Type testing 6.2.1 General
All performances related to characteristics included in this standard shall be determined when the manufacturer intends to declare the respective performances unless the standard gives provisions for declaring them without performing tests. (e.g. use of previously existing data, CWFT and conventionally accepted performance).
Assessment previously performed in accordance with the provisions of this standard, may be taken into account provided that they were made to the same or a more rigorous test method, under the same AVCP system on the same product or products of similar design, construction and functionality, such that the results are applicable to the product in question.
NOTE Same AVCP system means testing by an independent third party under the responsibility of a notified product certification body.
For the purpose of assessment manufacturer’s products may be grouped into families where it is considered that the results for one or more characteristics from any one product within the family are representative for that same characteristics for all products within that same family.
Products may be grouped in different families for different characteristics.
Reference to the assessment method standards should be made to allow the selection of a suitable representative sample.
In addition, the determination of the product type shall be performed for all characteristics included in the standard for which the manufacturer declares the performance:
6.2.2 Test samples, testing and compliance criteria
The number of samples of multi-sensor fire detectors using a combination of carbon monoxide and heat sensors to be tested/assessed shall be in accordance with Table 3.
Gas test chamber for CO response value and cross-sensitivity to chemical agents
A.1 General
This annex specifies those properties of the gas test chamber that are of primary importance for making repeatable and reproducible measurements of smoke response values (see 5.1.5). However, since it is not practical to specify and measure all parameters which may influence the measurements, the background information in Annex J should be considered and taken into account when a gas test chamber is designed and used to make measurements in accordance with this standard.
A.2 Gas test chamber specification
A.2.1 The gas chamber shall be gas-tight, closed-loop and re-circulating. It shall be large enough to fully enclose the detector to be tested and the sensing parts of the measuring equipment. A gas test chamber as described in Annex J shall be used. Its volume shall be between 0,05 m3 and 0,1 m3.
A.2.2 Means shall be provided for creating an essentially laminar air flow at the required velocities (i.e. (0,2 ± 0,04) m/s or 1,0 ± 0,2 m/s) where the detector to be tested is mounted. The detector to be tested shall be mounted to be at least 20 mm from the side of the gas test chamber.
A.2.3 It shall be possible to control the temperature inside the box, in the proximity of the specimen under test, at the required values and to increase the temperature at a rate not exceeding 1 K/min from – 10 °C to + 55 °C.
A.2.4 The response value of CO fire detectors is characterized by the concentration of CO in air measured in the proximity of the detector, at the moment that it generates an alarm signal. Gas concentration measurements, S, shall be made in the proximity of the detector.
A.2.5 Means shall be provided for the introduction of the test gas such that a homogeneous gas concentration and for a linear rate of increase of concentration is obtained at the lowest and highest ramps used (1 ^l/min and 6 ^l/min).
A.2.6 Means shall be provided to maintain the pressure inside the chamber close to atmospheric pressure to prevent pressure variations caused by the introduction of CO or other gases. Means shall also be provided to purge the gas test chamber after each test with synthetic air.
Use and release of gases in the environment should be according to local health and safety regulations.
A.2.7 Means shall be provided for generating humid atmosphere inside the gas test chamber in the range (11 ± 1) % and (94 ± 3) %.
A.2.8 Only one detector shall be mounted in the gas test chamber, unless it has been demonstrated that measurements made simultaneously on more than one detector are in close agreement with measurements made by testing detectors individually. In the event of a dispute the value obtained by individual testing shall be accepted.
Fire test room
B.1 General
This annex specifies the important parameters of the fire test room required for Test Fires (see 5.5.3).
B.2 Fire test room specification
B.2.1 The specimens to be tested, the Measuring Ionization Chamber (MIC), the temperature probe, the measuring part of the obscuration meter, and the CO measuring instrument, shall all be located within the volume shown in Figure B.1 and Figure B.2.
B.2.2 The specimens, the MIC, the mechanical parts of the obscuration meter and the CO measuring instrument shall be at least 100 mm apart, measured to the nearest edges. The centre line of the beam of the obscuration
Measuring instruments for smoke and CO
C.1 General
This annex specifies the important characteristics of the instruments used for measuring the concentration of CO in the gas test chamber (see 5.1.5 and Annex A) and the CO concentration and smoke characteristics in the fire test room (see 5.5.3 and Annex B).
C.2 CO measuring instrument
C.2.1 The response value of CO fire detectors is characterized by the concentration of CO in air measured in the proximity of the detector, at the moment that it generates an alarm signal.
C.2.2 The instrument used for the measurement of CO shall have a measurement error not exceeding 1 ^l/l or 5 % of the measured value, whichever is greater. The 90 % response time of the instrument (t90) shall not exceed 10 s.
C.2.3 The response time of the instrument shall be such that it does not cause a measurement error at the highest rate of increase used for measurements greater than 5 ^l/l. The CO measuring instrument shall not be adversely affected by other gases that will be introduced during the tests.
Care shall be taken to ensure that the CO measuring instrument used in the fire test room does not respond to fire products other than CO in such a way as to affect the accuracy of the CO measurements.
C.3 Obscuration meter
The obscuration meter shall have characteristics as defined in EN 54-7:2000 , Annex C.
C.4 Measuring ionization chamber (MIC)
The MIC shall be constructed and have characteristics as defined in EN 54-7:2000 , Annex C.
Establishing exposure levels of chemical agents
D.1 General
This annex specifies the method for establishing the concentration of chemical agents to the exposure levels required by the test procedures in 5.6.6.2.
D.2 Establishing concentration of chemical agents for test gases 1 to 9
NOTE 1 It is impractical to use measuring instruments and to perform routine equipment calibration for the many different substances involved in the exposure tests to chemical agents. A method not requiring an accurate measurement of chemical concentrations is therefore chosen for these tests.
D.2.1 Certified pre-determined concentrations of the chemical, in a liquid or gas form, shall be used for each agent. This shall be applied to achieve the required concentrations in the test chamber. A measurement of the final concentration in the test chamber is not required.
D.2.2 For each chemical agent, the concentrations specified for conditioning shall be established by volumetric calculation based on the pre-determined concentration used for each chemical agent and the known volume of the gas test chamber.
D.2.3 If the source of the gas used is of the same concentration as that required for the test then the chamber shall be purged with the source gas until a volume at least 10 times greater than the volume of the test chamber has been displaced.
NOTE 2 This gives a concentration of 99,9 % or better of that which is required.
D.3 Verification of test chamber leakage
NOTE 1 Air tightness of the gas test chamber is an important factor in establishing the chemical concentration by volumetric calculation, as specified in D.2.
The air tightness integrity of the gas test chamber shall be checked periodically by introducing a known concentration of CO. The value of the leakage shall be measured over 24 h and recorded. The air flow fans shall operate throughout the duration of the test.
NOTE 2 If a gas leak is observed, then the gas concentration can be compensated to maintain the levels required in 5.6.6.2.
Heat tunnel for heat response value
E.1 General
This annex specifies those properties of the heat tunnel that are of primary importance for making repeatable and reproducible measurements of heat response values (see 5.1.6). The information in Annex K should be carefully considered and taken into account when designing the heat tunnel and using it to make measurements in accordance with this standard.
E.2 Heat tunnel specification
The heat tunnel shall meet the following requirements for each class of heat detector it is used to test:
a) The heat tunnel (Figure K.1) shall have a horizontal working section containing a working volume. The working volume is a defined part of the working section, where the air temperature and air flow conditions are within ± 2 K and ± 0,1 m/s, respectively, of the nominal test conditions. Conformance with this requirement shall be regularly verified under both static and rate-of-rise conditions by measurements at an adequate number of points distributed within and on the imaginary boundaries of the working volume. The working volume shall be large enough to fully enclose the detector(s) to be tested, the required amount of mounting board and the temperature measuring sensor.
b) The detector to be tested shall be mounted in its normal operating position on the underside of a flat board aligned with the air flow in the working volume. The board shall be (5 ± 1) mm thick and of such dimensions that the edge(s) of the board are at least 20 mm from any part of the detector. The edge(s) of the board shall have a semi-circular form and the air flow between the board and the tunnel ceiling shall not be unduly obstructed. The material from which the board is made shall have a thermal conductivity not greater than 0,52 W/m.K.
c) If more than one detector is to be mounted in the working volume and tested simultaneously (Figure K.2), then previous tests shall have been conducted, which confirm that response time measurements made simultaneously on more than one detector are in close agreement with measurements made by testing detectors individually. In the event of a dispute, the value obtained by individual testing shall be accepted.
d) Means shall be provided for creating a stream of air through the working volume at the constant temperatures and rates of rise of air temperature specified for the classes of detector to be tested. This air stream shall be essentially laminar and maintained at a constant mass flow, equivalent to (0,8 ± 0,1) m/s at 25 °C.
e) The temperature sensor shall be positioned at least 50 mm upstream of the detector and at least 25 mm below the lower surface of the mounting board. The air temperature shall be controlled to within ± 2 K of the nominal temperature required at any time during the test.
f) The air-temperature measuring system shall have an overall time constant of not greater than 2 s, when measured in air with a mass flow equivalent to (0,8 ± 0,1) m/s at 25 °C.
g) Means shall be provided for measuring the response time of the detector under test to an accuracy of ± 1 s.
Smouldering (pyrolysis) wood fire (TF2)
F.1 General
This annex specifies the fuel, arrangement, method and conditions for test fire, TF2 (see 5.5.3). F.2 Fuel
Approximately 10 dried beechwood sticks (moisture content = 5 %), each stick having dimensions of 75 mm x 25 mm x 20 mm.
F.3 Hotplate
The hot plate shall have a 220 mm diameter, grooved surface with eight concentric grooves, and 5 mm wide, with the outer groove 4 mm from the edge and a distance of 3 mm between plate shall have a rating of approximately 2 kW.
The temperature of the hot plate shall be measured by a sensor attached to the fifth groove, edge of the hot plate, and secured to provide a good thermal contact.

F.7 Test validity criteria
Figure F.1 — Arrangement of sticks on hotplate
No flaming shall occur before the end-of-test condition has been reached. The development of the fire shall be such that the curves of m against y, and m against time, t, and S against time, t, fall within the limits shown in Figure F.2, Figure F.3 and Figure F.4, respectively. That is, 1,23 <y < 2,05 and 570 < t < 840 at the end-of- test condition mE = 2 dB/m.
J.1 General
This annex provides information on the possible construction for the apparatus which may be used for measuring the CO response value (see 5.1.5). This annex should be read in conjunction with Annex A which specifies the requirements of the gas test chamber.
J.2 Construction of the gas test chamber
CO fire detectors respond when the signal(s) from one or more fire sensors fulfil certain criteria. The gas concentration at the sensor(s) is related to the gas concentration surrounding the detector but the relation is usually complex and dependent on several factors, such as orientation, mounting, air velocity, turbulence, rate of rise of gas concentration, etc. The relative change of the response value measured in the gas test chamber is the main parameter considered when the stability of fire detectors is evaluated by testing in accordance with this standard. The points which follow should be considered when designing and characterizing a gas test chamber against the requirements given in Annex A:
a) The larger the gas test chamber, the larger the volume of gas required during tests. Environmental control, personal safety and uniform gas distribution will be more easily achieved if the volume of the gas test chamber is kept to a minimum. A gas test chamber having a length of 500 mm, width of 400 mm and height of 400 mm will provide acceptable results. Figure J.1 gives an example of for the construction of a gas test chamber.
b) The gas test chamber should be sealed to ensure that test gases do not escape and that potentially pollutant gases do not enter. Consideration should be given to the choice of materials used in the construction of the gas test chamber and associated pipe work to ensure that the test gases do not react with the equipment and thus affect the gas concentration.
c) The response value measurements require increasing gas concentration which is best achieved in a closed-loop gas test chamber.
d) The air flow created by a fan in the chamber will be turbulent, and needs to pass through one or several flow straighteners (Items 17 of Figure J.1) to create a nearly laminar and uniform air flow in the proximity of the detector. This may be facilitated by using a filter, honeycomb or both, in line with, and upstream of the detector. Care should be taken to ensure that the airflow is well mixed to give a uniform temperature and gas concentration before entering the flow straightener. Efficient mixing may be obtained by feeding the gas into the gas test chamber upstream the fan.
e) The gas test chamber may be placed inside a climatic chamber to provide heating and cooling during environmental conditioning.
f) Special attention should be given to the arrangement of the elements in the working volume in order to avoid disturbance of the test conditions e.g. due to turbulence.
Construction of the heat tunnel
K.1 General
This informative annex describes a possible construction for the apparatus which may be used for measuring the heat response value (see 5.1.6). This annex should be read in conjunction with Annex E which specifies the requirements of the heat tunnel.
K.2 Construction of the heat tunnel
K.2.1 Heat detectors respond when the signal(s) from one or more sensors fulfil(s) certain criteria. The temperature of the sensor(s) is related to the air temperature surrounding the detector, but the relation is usually complex and dependent on several factors, such as orientation, mounting, air velocity, turbulence, rate of rise of air temperature. Response times and response temperature and their stability are the main parameters considered when the fire-detection performance of heat detectors is evaluated by testing in accordance with this standard.
K.2.2 Many different heat-tunnel designs are suitable for the tests specified in this standard but the points which follow should be considered when designing and characterizing a heat tunnel against the requirements given in Annex E.
temperature, thereby eliminating any need to temperature compensate its output. A constant velocity, indicated by an anemometer so positioned, should correlate with a constant mass flow through the working volume. However, to maintain a constant mass flow at normal atmospheric pressure in a re-circulating tunnel, it is necessary to increase the air velocity as the air temperature is increased. Careful consideration should therefore be given to ensuring that there is an appropriate correction for the temperature coefficient of the anemometer monitoring the airflow. It should not be assumed that an automatically temperature-compensated anemometer would compensate sufficiently quickly at high rates of rise of air temperature.
K.2.6 The air flow created by a fan in the tunnel will be turbulent, and will need to pass through a turbulence-reducer to create a nearly laminar and uniform air flow in the working volume (see Figure J.1). This may be facilitated by using a filter, honeycomb or both, in line with, and upstream of, the working section of the tunnel. Care should be taken to ensure that the airflow from the heater is mixed to a uniform temperature before entering the turbulence reducer.
K.2.7 It is not possible to design a tunnel where uniform temperature and flow conditions prevail in all parts of the working section. Deviations will exist, especially close to the walls of the tunnel where a boundary layer of slower and cooler air will normally be observed. The thickness of this boundary layer and the temperature gradient across it can be reduced by constructing or lining the walls of the tunnel with a low-thermal conductivity material.
It has a plane impact face chamfered at (60 ± 1)° to the long axis of the head. The tubular steel shaft has an outside diameter of (25 ± 0,1) mm with walls (1,6 ± 0,1) mm thick.
L.2.3 The striker is mounted on the shaft so that its long axis is at a radial distance of 305 mm from the axis of rotation of the assembly, the two axes being mutually perpendicular. The central boss is 102 mm in outside diameter and 200 mm long and is mounted coaxially on the fixed steel pivot shaft, which is approximately 25 mm in diameter, however the precise diameter of the shaft will depend on the bearings used.
L.2.4 Diametrically opposite the hammer shaft are two steel counter balance arms, each 20 mm in outside diameter and 185 mm long. These arms are screwed into the boss so that the length of 150 mm protrudes. A steel counter balance weight is mounted on the arms so that its position can be adjusted to balance the weight of the striker and arms, as in Figure L.1. On the end of the central boss is mounted a 12 mm wide x 150 mm diameter aluminium alloy pulley and round this an inextensible cable is wound, one end being fixed to the pulley. The other end of the cable supports the operating weight.
L.2.5 The rigid frame also supports the mounting board on which the specimen is mounted by its normal fixings. The mounting board is adjustable vertically so that the upper half of the impact face of the hammer will strike the specimen when the hammer is moving horizontally, as shown in Figure L.1.
L.2.6 To operate the apparatus the position of the specimen and the mounting board is first adjusted as shown in Figure L.1 and the mounting board is then secured rigidly to the frame. The hammer assembly is then balanced carefully by adjustment of the counter balance weight with the operating weight removed. The hammer arm is then drawn back to the horizontal position ready for release and the operating weight is reinstated. On release of the assembly the operating weight will spin the hammer and arm through an angle of 3 n / 2 radians to strike the specimen. The mass of the operating weight to produce the required impact energy of 1,9 J equals:
0,388
Clauses of this European Standard addressing the provisions of the EU
Construction Products Regulation
ZA.1 Scope and relevant characteristics
This European Standard has been prepared under the mandate M/109 for fire alarm/detection, fixed firefighting, fire and smoke control and explosion suppression products given to CEN by the European Commission and the European Free Trade Association.
If this European standard is cited in the Official Journal of the European Union (OJEU), the clauses of this standard, shown in this annex, are considered to meet the provisions of the relevant mandate, under the Regulation (EU) No. 305/2011.
This annex deals with the CE marking of the multi-sensor fire detectors using a combination of carbon monoxide and heat sensors intended for the uses indicated in Table ZA.1 and shows the relevant clauses applicable.
This annex has the same scope as in Clause 1 of this standard related to the aspects covered by the mandate and is defined by Table ZA.1.
The declaration of the product performance related to certain essential characteristics is not required in those Member States (MS) where there are no regulatory requirements on these essential characteristics for the intended use of the product.
In this case, manufacturers placing their products on the market of these MS are not obliged to determine nor declare the performance of their products with regard to these essential characteristics and the option “No performance determined” (NPD) in the information accompanying the CE marking and in the declaration of performance (see ZA.3) may be used for those essential characteristics.
ZA.2 Procedures for the attestation of conformity of multi-sensor fire detectors using a combination of carbon monoxide and heat sensors
ZA.2.1 System of attestation of conformity
The AVCP system(s) of point carbon monoxide detectors indicated in Table ZA.1, established by EC Decision1996/577/EC (OJEU L254 of 1996-10-08) as amended by EC Decision 2002/592/EC (OJEU L192 of 2002-07-20), is shown in Table ZA.2 for the indicated intended use(s) and relevant level(s) or class(es) of performance.
The AVCP of multi-sensor fire detectors using a combination of carbon monoxide and heat sensors in Table ZA.1 shall be according to the AVCP procedures indicated in Table ZA.3 resulting from application of the clauses of this or other European Standard indicated therein. The content of tasks of the notified body shall be limited to those essential characteristics as provided for, if any, in Annex III of the relevant mandate and to those that the manufacturer intends to declare.
Table ZA.3 — Assignment of evaluation of conformity tasks for Fire alarm devices – multi-sensor fire detectors using a combination of carbon monoxide and heat sensors under system 1
ZA.2.2 Declaration of performance (DoP)
ZA.2.2.1 General
The manufacturer shall draw up the DoP and affixes the CE marking on the basis of AVCP system set out in
ZA.2.2.3 Example of DoP
The following gives an example of a filled-in DoP for multi-sensor fire detectors using a combination of carbon
monoxide and heat sensors: