The Fan Status and Control Annunciator, FS-Series, is designed for use in high-rise buildings and other facili- ties that must have a means to manually control the fans or dampers designated for smoke removal during a fire emergency. The unit is designed to work in conjunction with fire alarm and control systems to provide visual status and manual control capability for each smoke removal fan.
A three position switch is provided for each fan, along with two status indicators. There “ON/OFF” indicators are activated by contacts on the fan starter relays. The “ON” indicator will light only when the fan is running. The “OFF” indicator will light whenever the fan is NOT running.
When the switches are in the “AUTO” position, the system fans will be monitored only. During a fire emergency, the fire alarm system will operate the fans as per the smoke removal system design. Should conditions warrant manual control, and at the command of the authority having jurisdiction, the annunciator can be used to provide specific control of each smoke removal fan.