Incite Fire ASD 532, Operating Manual

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Mounting
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5.4 Mounting the detector housing
Warning
•
Mounting work on the detector housing is best carried out without the smoke sensors fitted.
•
The smoke sensor is always installed in the detector box just when the ASD 532 is commissioned (see
Sec. 6.3).
•
Depending on the circumstances (e.g. long periods of time between mounting and commissioning or if the en-
vironment is extremely dusty (construction work), the housing cover should be kept closed until the device is
commissioned.
The detector housing should always be kept in the room to be monitored. If this is not possible, ensure that the detector hous-
ing is located in a room that has the same air pressure or – in the case of air-conditioned rooms – the same climate and pres-
sure zone. In applications where the sampling pipe and detector housing are mounted in different climate zones, a return sam-
pling pipe to the monitored area is required. The return line can be adapted after removing the air outlet pipe plug on the ASD
532 housing. See also under Sec. 4.6, 5.4.2 and 5.4.3. The maximum length for the return line must not exceed 20 m.
Special settings (larger airflow window, longer delay time etc.) may have to be made in areas with significant temperature fluc-
tuations of more than 20°C at both the sampling pipe and on the detector housing. This also applies to temperature differences
of more than 20°C between sampling pipe and detector housing.
An easily accessible installation location should be chosen so that the detector housing can be worked on without aids such as
ladders and scaffolding. The ideal installation height for the detector housing is about 1.6 m above ground level (top edge of
the detector housing).
On the entry side of the connection cable, a minimum distance of 10 cm to customer-side parts must be observed.
When positioning the detector housing, take into account the fact that the noise caused by the fan may in some cases be per-
ceived as a disturbance. If no suitable location is available for the detector housing, it may be necessary to mount it in a sound
insulated cabinet (e.g. ASD sound insulation housing). If air recirculation in the same climate zone as the sampling pipe is
necessary, it can be implemented by means of a tube piece out of the acoustically insulated cabinet. The tube piece exiting
from the sound insulated cabinet (transition) must be properly sealed. When using the ASD sound insulation housing, an M32
cable screw union is used for the transition. For further details about the ASD sound insulation housing contact the manufac-
turer.
ASD532 Operating Manual