User manual

Operation
43 Liebert
®
iCOM
®
SA06 Outdoor Temperature—Displays the actual outdoor temperature based on the Temperature
Humidity sensor (Sensor C). When this parameter shows OK, the outdoor temperature requirements
have been met to use economization. When NOK is shown, the outdoor temperature is outside the
operating range set in the Liebert iCOM control.
SA07 Stop ECO at Setpoint + —Sets the temperature when the Liebert Air Economizer will be
disabled due to an increasing outdoor air temperature. This parameter is added to the return air
sensor setpoint and then compared to the outdoor temperature reading. If the outdoor temperature
reading exceeds the return air temperature setpoint plus this parameter, the Liebert Air Economizer
will be disabled. This is factory-set at 20°F (-6.7°C).
SA08 Economizer Mode—Displayed when the Liebert Air Economizer is available for use.
SA09 Dew Point Calculated—Displays the actual outdoor dew point based on the outdoor sensor.
SA10 Economizer Override At—Sets the indoor temperature when the Liebert Air Economizer
™
will be locked out. Even when all other parameters are satisfied, the Liebert Air Economizer will be
locked out when the return air temperature sensor reads this value.
SA11 Delay After Fan Start—Sets the delay from the time the unit has been started until the
ECO EMERGENCY OVERRIDE can be triggered. This allows airflow to pass over the sensors to get
an accurate reading before any emergency modes are activated.
Figure 38 Outdoor sensor data screen
SA13 Local Outdoor Air Temperature—Actual outdoor temperature of the sensor connected to
the unit.
SA14 Local Outdoor Air Humidity—Actual outdoor humidity of the sensor connected to the unit.
SA15 Outdoor Sensor C Connected—The parameter can be set to Yes or No. The factory default is
Yes if air economizer is enabled. When set to Yes, the unit uses the locally installed outdoor air
temperature and humidity sensor to help determine air economizer eligibility. When set to No, air
economizer eligibility is determined by outside air sensor sharing. Outdoor Sensor Operation must be
set to Shared to disable Outdoor Sensor C.
SA16 Outdoor Sensor Operation—The parameter can be set to Local or Shared. The factory
default is Shared. When set to Shared, outdoor temperature and humidity readings are averaged
among all connected units. The average is used to determine air economizer eligibility. When set to
Local, the sensor installed at the unit determines air economizer eligibility without influence from
other units connected in the group.
SA17 Shared Outdoor Air Temperature—This read-only parameter displays the shared outside
air temperature when Outdoor Sensor Operation is set to Shared.
SA18 Shared Outdoor Air Humidity—This read-only parameter displays the shared outside air
humidity when Outdoor Sensor Operation is set to Shared.