Harrington Signal Tracker T8000 - Operation Manual - Manual (Page 13)

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HSI #780-0923 FireSpy Tracker Operation Manual
9
Smoke detector control
Smoke detectors need to control both on and off states of fans and dampers in the building. This is
accomplished through group settings, FDC modules, and zone settings. Each smoke detector that
participates in smoke control is assigned to the special “smoke control” groups of several FDCs in order
to turn on and off the correct set of fans and dampers (e.g. two groups for “same floor”, two groups for
“floor above” and two groups for “floor below”).
Annunciation and control interface
The LDV provides outputs to drive lamps or LEDs which annunciate the status of fans and dampers in the
smoke control system. The LDV can also use switch inputs for manually controlling the smoke control
system.
Zones
Zone numbers are used to define the prioritization of actions. If an FDC is activated by multiple inputs in
its smoke control groups, the one that has the same zone number as the FDC takes precedence (a
“same floor” event takes precedence over a “floor above” or “floor below” event). Zone number 255 is a
special zone number which overrides all other zone numbers and provides a means for manual control.
Fully programming a system for smoke control can be very complex. Please refer to the smoke control
applications guide for more details.