pyrexx PX-1 Betriebsanleitung Seite 42

Ceiling panels (height greater than
•
20 cm) with joists (ceiling surface
more than 36 m
Platform/gallery (area greater than
•
16 m², at least 2 m long and wide)
In rooms with beams (e.g., wooden
beams), the number and arrange-
ment of the devices depends on
the height of the joists and the
surface formed by the beams.
4.2 Requirements for the
monitoring area
When selecting the appropriate monitoring
area, observe the following:
f Position the device centrally on the
ceiling.
f Observe the maximum installation
height of 6 m.
f Keep a maximum distance of 6 m to
a potential fire source.
f Keep a minimum distance of 0.5 m to
surrounding walls, furniture and lamps.
42
)
2
Operating Manual: PX-1 - Smoke Alarm Device
Areas susceptible to draughts
For occurring smoke to be able to reach the
smoke alarm device, there may not be any
strong draughty influences around the instal-
lation site (e.g. caused by air conditioner and
ventilation intakes, fans). In rooms with forced
ventilation, perforated ceilings that serve for
ventilation must be closed off within a radius
of 0.5 m around the alarm device.
Rooms with straight ceilings
(slope angle < 20°)
1/2
0,5
Fig. 11 Rooms with straight ceilings
Allowed
Not allowed
1/2
0,5
EN
EN