Emerson Liebert iCOM, Manual

Page: 100 / 172

User Menu Parameters
Liebert
®
iCOM
®
for Liebert DSE
™
92
Figure 65 Setpoints screen, page 2
U113 2nd Temperature Setpoint —Provides a way to program an alternate temperature setpoint
that is activated by a dry contact through the customer inputs connections. When a customer input
connection is set to “2nd Setpoint” and the input is wired to that input is active, then the value set in
this parameter sets the active temperature setpoint. This parameter is adjustable from 41°F to 81°F
(5°C to 27°C). The default setting is 41°F (5°C).
This temperature may affect fan speed if the control is setup to operate in a coupled mode during
normal operation (see Table 5 ).
U114 Supply Temp Limit Setpoint —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. This parameter must be enabled in the Service /
Setpoints menu prior to setting a supply limit setpoint. This parameter is adjustable from 41°F to
81°F (5°C to 27°C). The default setting is 41°F (5°C).
U116 BMS Backup Temp Setpoint —Selects a temperature setpoint that will be activated in the
event of a BMS timeout. The BMS timer must be configured for this parameter to activate. If the unit
is operating in “Coupled” mode, located in Service Menus>Setpoint, S163, then this setpoint will
affect the fan control setpoint. This temperature may affect fan speed if the control is setup to operate
in a coupled mode during normal operation (see Table 5 ). This parameter is adjustable from 41°F to
104°F (5°C to 40°C). The default setting from the factory is 73°F (23°C).
U117 BMS Backup Fan Setpoint —Selects a temperature setpoint that will be activated in the
event of a BMS timeout. The BMS timer and S163 must be configured to “Backup Set” for this
parameter to activate. This parameter is adjustable from 41°F to 104°F (5°C to 40°C). The default is
73°F (23°C).
U119 Return Compensation Setpoint —Allows the return air sensor to be used even when in
Supply or Remote temperature control mode. Return Compensation modifies the temperature
setpoint to ensure that the return air temperature is kept above a specific temperature. If the return
compensation value is set to 80°F and the actual return temp falls to 75°F, then the controlling
temperature setpoint will be increased and will reflect in the “Control Temp Act.” This parameter is
adjustable from 41°F to 104°F (5°C to 40°C). The default is 73°F (23°C).