NOTE: Depending on the type of thermal management unit, included components, and control settings of your system,
all of the options listed may not be available on your Vertiv™ Liebert® iCOM™ display.
Static Pressure Settings Options
Current Override Temperature
Current temperature reading of the sensor selected for static pressure control override.
Current Override Value
Percentage of override from 0% (no override/static pressure control only) to 100% (temperature-sensor reading
overrides completely).
Full Speed at
Temperature at which override reaches 100% and fan operates at full speed.
Operation at Static Pressure Sensor Failure
Selects operation in the event that the static pressure sensor fails. Values are:
• Freeze Speed: Current fan speed is kept.
• SP Off: Static pressure control is disabled and fan speed is dictated by selected fan speed sensor.
Override Integration Time
Adjusts amount of override based on the length of time the temperature has deviated from the setpoint.
Override Slew Rate Filter
Rate of change filter to slow down fan speed changes.
Static Pressure Control Override
Selects sensor that may override static pressure control if the temperature gets too far from the temperature setpoint
to provide additional air flow because static pressure is not able to maintain the temperature. Values are:
• None: Override is disabled.
• Remote Sensor: The remote sensor overrides static pressure control.
• Return Sensor: The return sensor overrides static pressure control.
Static Pressure Min Pause
Minimum initial length of time that fan speed stops increasing after the pressure reading crosses into the deadband.
After the pause, the fan speed pulses (increases if below the setpoint and decreases if above the setpoint) for the
period selected in the Static Pressure Pulse inside deadband field. After each pulse, a pause takes place, the length of
which is calculated as a ratio between the deadband border (minimum) and the setpoint (maximum).
3 Service Operation
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Vertiv™ Liebert® iCOM™Installer/User Guide
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