User Menu Parameters; Figure 34 User Menu Icons; Figure 35 Setpoints Parameters Screen - Emerson Liebert Challenger 3000 User Manual

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SER ENU
User menus report general cooling unit operations and status. The user menu password is 1490.
The User menu parameter tables in this manual may differ from the display on your cooling unit. The
Liebert iCOM functions with several Liebert Precision Cooling units, each with its own set of control
commands. In addition, the Liebert iCOM control firmware is being updated constantly. As a result,
the User menu parameter tables in this manual may differ from the display on your cooling unit.
Check www.liebert.com

Figure 34 User menu icons

Figure 35 Setpoints parameters screen

SETPOINTS
U101
U102
U103
U104
U105
U106
U107
U108
U109
U110
U111
Temperature Setpoint—This parameter allows the user to select a temperature that the cooling
unit will maintain by applying cooling and or reheats.
Humidity Setpoint—This parameter allows the user to select a humidity that the cooling unit will
maintain by removing or adding moisture to the air.
Humidity Control Type—This parameter selects the humidity control calculation. Setting this
parameter to "Relative" will control the humidity without considering any temperature deviations.
"Predictive" and "Absolute" control consider the temperature deviation from temperature setpoint so
that a constant level of moisture is kept in the area based on the humidity sensor reading and the
temperature deviation from setpoint.
Supply Limit—This parameter allows a user to enable or disable the discharge air temperature sen-
sor. This sensor is an optional sensor that can be ordered from the factory.
Supply Limit Temp Value—This parameter selects the minimum discharge air temperature. When
the actual sensor reading approaches this parameter the cooling capacity will be limited to avoid
going below the Supply Limit Temperature value.
Backup Temperature Setpoint—This parameter allows you to select a temperature setpoint that
will be activated in the event of a BMS time-out or a customer input signal. The BMS timer must and
/ or the customer input must be configured for this parameter to activate.
P
ARAMETERS
for the latest Liebert iCOM user manual updates.
PASSWORD (Actual Level 0)
Temperature Setpoint
Humidity Setpoint
Humidity Control Type
Supply Sensor
Supply Setpoint
Backup Temperature Setpoint
for next/previous unit
then to change parameter
UNIT 01
to select parameter
to confirm
53

User Menu Parameters

User Menu password: 1490
????
73°F
50.0%
Relative
Control
50°F
73°F