Associated equipment
Lights
The FSCS provides lights that show the mode of each zone and the status of each piece of smoke control mechanical equipment. The status lights must conform to a specific color code scheme (Table 3).
Table 3. Pilot lamp color codes
Color | Description |
|
|
Green | Fan On or damper Open |
|
|
Red | Fan Off or damper Closed |
|
|
Yellow (or Amber) | Verification of Operation Status light. Fan or |
| damper not in commanded position. |
|
|
Audible trouble indicator
The FSCS may provide an audible trouble indicator with a silence switch. If provided, the indicator alerts personnel to system trouble.
Manual switches
The FSCS provides manual switches that operate smoke control system fans and dampers. Normally, there is one manual switch for each piece of equipment. However, in complex smoke control systems that have very large fan systems, one switch may operate more than one piece of equipment. This allows the smoke control system to coordinate smoke control functions without damaging equipment. For example, the manual switches that control large central fan systems may also operate the mixing dampers to prevent tripping the high- and
Manual switches at the FSCS are either 2- or
Table 4. Switch state descriptions
Switch state | Equipment |
|
|
Fans controlled by the smoke control system or | |
| other automatic control system |
|
|
Dampers controlled by the smoke control | |
| system or other automatic control system |
|
|
Fans only controlled from the FSCS | |
|
|
Dampers only controlled from the FSCS | |
|
|
Smoke control system equipment
The smoke control system receives alarm signals from the FACP and manual command signals from the FSCS. On receiving alarm signals and/or manual commands, the smoke control system controls the mechanical smoke control equipment. Manual command signals from the FSCS take priority over alarm signals.
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