EN 54-29-2015 pdf download.Fire detection and fire alarm systems – Part 29: Multi-sensor fire detectors – Point detectors using a combination of smoke and heat sensors.
a) Measuring ionization chamber (MIC);
b) Obscuration meter:
C) Temperature probe.
55.1.3.2 Test Fires
The specimens shall be subjected to six test fires. TF1, TF2. TF3, TF4, TF5 and TF8 as described in Annex H, Annex I, Annex J. Annex K. Annex L, Annex M including the type, quantity and arrangement of the fuel and the method of ignition 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 against v, and m against time t 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.
5.5.1.3.3 Mounting of the specimens
The six specimens (Nos. 17, 18, 19, 20, 21, 22) shall be mounted on the fire test room ceiling in the designated area (see Annex G). The specimens shall be mounted in accordance with the manufacturer’s instructions. The specimens 19, 20. 21 and 22 shall be mounted in the least sensitive orientation for smoke and the specimens 17 and 18 in the least sensitive orientation for heat relative to an assumed airflow from the centre of the room to the specimen.
Each specimen shall be connected to its supply and monitoring equipment, as described in 5.1.2, and shall be allowed to stabilize in its quiescent condition before the start of each test fire.
Detectors which dynamically modify their sensitivity in response to varying ambient conditions, may require special reset procedures and/or stabilization times. The manufacturer’s guidance should be sought in such cases to ensure that the state of the detectors at the start of each test is representative of their normal quiescent state.
5.5.1.3.4 Initial conditions
Before each test fire the room shall be ventilated with clean air until It is free from smoke and so that the conditions listed below can be obtained.
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:
The greater of the smoke response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated or rnm., and the lesser shall be designated or
Then 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/mm.
The greater of the heat response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated T,K, and the lesser shall be designated Tmin.
5.6.3.1.3 Requirements
a) No alarm or fault signal shall be given during the conditioning period or the additional 2 mm,
b) The ratio of the smoke response values r1: or m,,: rn, shall be not greater than 1,6.
c) The ratio of the heat response values T,,,: T, shall be no not greater than 1.3.
d) The lower smoke response value shall be not less than 0.2 or shall be not less than 0.05 dB m’.
5.6.3.2 Impact (operational)
5.6.3.2.1 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.
5.6.3.2.2 Test procedure
5.6.3.2.2.1 Apparatus
The test apparatus shall consist of a swinging hammer incorporating a rectangular-section aluminium alloy head (Aluminium alloy Al Cu4 Si Mg complying with ISO 209:2007, 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 Fl. A suitable apparatus is described in Annex F.
5.6.3.2.2.2 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 halt 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.EN 54-29-2015 pdf download.