Aspiration systems are an effective way of providing very early warning protection for high value and enterprise critical areas; they are also an effective method of protecting large open areas and inaccessible or difficult to reach locations such as under-floor cable voids in computer rooms.
The LASD, available as a single or dual channel device, uses one or two Pinnacle laser optical detectors addressed via a translator module from the fire system loop. The translator module makes the Pinnacle laser detector appear as a normal optical detector to the panel; it also provides the control panel interface for the air management and fault monitoring of the air movement side of the aspiration unit.
In the single channel version, the second Pinnacle detector can be used to give double-knock detection, a mandatory requirement if the system has automatic initiation of sprinklers or gaseous extinguishing systems. The second detector can also be used to give automatic redundancy capability, a particular benefit for installations in remote, unattended buildings such as mobile communication base stations.
The LASD aspiration unit is powered from an independent external 24VDC supply to minimise the load on the loop wiring.