Primary States (Fan Relief BSP for UL-864-UUKL) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

Off: The fan is off when the module is in the Off mode of operation.

Min: The analog fan output (Relief Fan Percent Cmd) is zero, and the fan control output (Relief Fan OnOff) is on when the module is in the Min mode of operation.

BS-P Control: The relief fan controls the building static pressure when the module receives this command. The module operates in the BS-P Control mode if the building static pressure is reliable.

Emergency BS-P Control: The relief fan controls the Emergency BSP Setpoint when the module receives this command. The module operates in the Emergency On state if the pressure sensor is unreliable and the Emergency On Percent Cmd is issued to the Fan Percent Cmd output.

Emergency Off: The fan is off and the priority is set to 1 or 2 depending on the FSCS status.

Emergency On: When the mode is Emergency BS-P Control or the FSCS RF Cmd is On and the pressure sensor is not reliable, the module enters this state, turns on the fan, and issues the Emergency On Percent Cmd to the fan percent command.

Hold: The module operates in this state when the output priorities are not 16.