Figure 6.46 Options setup, page 1 of 2
Autorestart Enabled—Restarts the unit after a power cycle when set to Yes. When this parameter is set to
No, the unit will not restart after a power cycle.
Single Unit Auto Restart—Sets a time delay for the unit to restart when the Auto Restart Enabled is set to
Yes. The delay begins once the boot process has completed. This parameter allows units to be staggered
On to reduce the amount of simultaneous power consumption after a loss of power.
Unit Start Sequence Delay—Not currently used.
Control Delay Time—Not currently used.
Pump Start Time Delay—Sets a time delay to ensure that refrigerant begins flowing when the pump
starts. If refrigerant does not begin flowing before the user-set delay expires, the pump will be turned Off.
Pump Wait Time Delay—Sets the pump wait time delay to prevent the pump from continuing to run when
refrigerant is not flowing. If a pump is running normally and refrigerant flow is lost, the pump will stay On
for the specified time trying to re-establish refrigerant flow. If refrigerant flow resumes during the specified
interval, the pump will continue operating. If the wait time expires and refrigerant flow has not resumed,
the pump will shut down.
Pump Off Time Delay—Sets the length of time a pump will remain off when refrigerant flow is interrupted
or stops. After the time delay has expired, the control will try to restart the pump.
Lead Pump—Sets which pump is the active pump. It can be set to PUMP 1 or PUMP 2. The control will
operate the respective pump unless a loss of flow condition occurs. On a LOSS OF FLOW condition, the
control will switch to the standby pump after the LOSS OF FLOW alarm time delay has elapsed and the
LOSS OF FLOW alarm has been annunciated. The default is PUMP 1.
Pump Short Cycle Delay—Sets the time to lock Off the unit if it is unable to establish refrigerant flow
within this set amount of time.
Vertiv | Liebert® XDC™ User Manual | 107
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