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www.espuk.com
The minimum static response of heat devices should not be less than 29°C
above the average ambient temperature, or less than 4°C above the highest
temperature the device can be expected to experience.
HEAT DETECTORS
FIRE DETECTOR COVERAGE & POSITIONING
Smoke detection devices have an individual coverage of 7.5m radius. However
these radii must overlap to ensure there are no ‘blind spots’. Therefore the
individual coverage can be represented by a square measuring 10.6 x 10.6m
giving an actual area coverage of 112m² per device.
Heat detection devices have an individual coverage of 5.3m radius. However
these radii must overlap to ensure there are no ‘blind spots’. Therefore the
individual coverage can be represented by a square measuring 7.5 x 7.5m giving
an actual area coverage of 56.3m² per device.
SMOKE DETECTORS
It should be noted that large smoke particles will have a similar particle size to
small particle contaminates including some types of dust and aerosols. As such
care should be taken when siting smoke detectors to limit subjection to this
phenomenon.
PARTICLE SIZE
SMOKE
DUST
PARTICLE NO
Smoke Detectors
as per manufacturer
10.6m x 10.6m = 112m
2
10.6m
7.5m
5.3m
7.5m
5.3m
3.8m
Heat Detectors
as per manufacturer
7.5m x 7.5m = 56.3m
2
Time of day
Average ambient temperature
<29°C
<4°C
X
X
Maximum
temperature
10
20
30
40
50
60
70
80
90
100
Temperatur
e
