Vertiv | Liebert XDH | User Manual
34
Electrical Installation
• When terminals 37# and 38# are disconnected, the unit is shut down.
•
Water sensor on the floor
A floor-water-sensor is delivered with the unit in the accessories kit. Connect one end of the floor-water-sensor
to Terminal 51# on the terminal bar and the other end to Terminal 24#. Each device can be connected in
parallel to any number of detection sensors. However, there is only one floor-water-leakage alarm and it can be
checked through the controller.
It is recommended to install the floor-water-sensor near the ground level in the vicinity of the unit’s baseplate,
with a minimum distance of 0.5 m to the unit. The floor-water-sensor should also be placed away from the bay
or floor drains of the wet storage.
• Before tightening any assembly connections and line connections, ensure that the control unit’s power is
turned off.
•
It is not permitted to use a floor-water sensor near flammable liquids.
•
It is not permitted to use a floor-water sensor for the detection of flammable liquids.
• Remote Temperature Sensor
Each unit can be equipped with four remote temperature sensors, if there is an external power supply it can
be expanded up to eight sensors. Depending upon the airflow or return air temperature which is remotely
controlled by the unit. The accurate temperature value can be obtained by locating the sensor in the cold or
hot aisle appropriately. The temperature value is used to control the operation of the unit. Otherwise, the device
may not run normally.
If sensors are connected as a chain, connect the remote temperature sensor connector to the pre-determined
network interface terminal. After the cable is connected, lead the cable from the designated top or bottom
outlet hole of the unit, then connect the cable to the first sensor, and further connect the first sensor to the
second sensor. Use the same connection method on other sensors.
describes the IRM-S01T address
settings of the remote temperature sensors.
