9 Dual Zone Digital Location Control Unit Installation and Operation Manual
Protection of one risk area with two detection zones
Figure 4: Protection of one risk area with two detection zones
In a large risk area the control unit can be used to create two sub zones to
reduce the search area should an alarm be generated.
To report to the main fire alarm system, two separate conventional detection
circuits or two addressable monitoring interfaces are required to monitor the
status of each individual zone.
Caution: As the system uses one control unit, the total combined area coverage
of both Digital LHD zones cannot exceed the maximum detection zone size as
defined by local standards (refer to your local standards).
sensor cable
PSU
control panel
zone 1
zone 2
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