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11
h
H
D
D>0,25 (H-h) : 1 detector for each cell
D<0,25 (H-h): 2 detectors for each cell
D<0,13 (H-h): 3 detectors for each cell
(Values are in metres)
If the beam height (h) is
5%
less than ceiling height (H), ceiling should be treated as �lat
and radius values in Table A should be applied. If the beam height (h) is
5%
more than
ceiling height (H), then the conditions in the �igure should be applied.
Detectors should not be mounted adjacent to an air inlet if it is closer than
1 m
or if there
is an air �low in the medium more than
1 m/s.
<1m
>1m
Air conditioner / Ventilation
Beam
Beam
Beam
Beam