11
In normal rooms, the smoke detec-
tor should be installed at least 60
cm away from the corners of the
room.
Radiators, window sills, windows
and even furniture affect the circu-
lation of air.
Ideally you should mount it to the
ceiling in the centre of the room.
60cm
60cm
60cm
Smoke
If you select an unsuitable installation location the smoke detector will remain
more or less useless when a fire starts; only triggering an alarm when the
smoke concentration reaches a very high level.
This will significantly reduce the amount of time available for saving yourself
and others from danger or for extinguishing the fire.
Window sills, curtains or furniture strongly influence the circulation of air, and
thus, the movement of smoke. They create a zone of dormant air. This means
that rising smoke does not reach the smoke detector or it reaches it too late!
We generally recommend that the smoke detector be mounted to the ceiling in
the centre of a room. However, you should make sure that you do not install the
device directly under any lights (halogen lamps, for example).
You can check whether the alarm is sufficiently loud enough to wake someone up from its
installation location by setting off a test alarm (see ‘Installation’) while someone is asleep in
the bedroom.
The smoke detector should be loud enough to wake people up! It should
not just be audible!
You should also carry out extensive checks to make sure that the radio signals sent by each
of the smoke detectors from their installation locations will reach the ‘HMS 100 Z’ or ‘FHZ 1000’
central unit.
In general, reception problems are not experienced in most single family
houses. As you can see in section 15 (‘Information on the radio range’),
however, many things can restrict the radio reception.