Hardware Installation; Installing Wired Remote Sensors; Setting Dip Switches And Labeling 2T Sensors - Vertiv Liebert iCOM Installer/User Manual

13 HARDWARE INSTALLATION

Your unit includes the Liebert® iCOM controller. This section describes the installation of connections and
cabling to fully utilize the iCOM features.

13.1 Installing Wired Remote Sensors

Up to 10 remote-sensor modules, installed in the monitored racks and connected to the cooling unit,
provide control and reference input to iCOM and building-management systems. Using remote, rack
sensors combats cooling problems related to recirculation air, uneven rack loading, and air distribution.
The sensor array consists of 2T sensors that each have two temperature probes on a 6-ft (1.8-m) probe-
connection cable, Figure 12.4 below, and requires several steps to prepare, connect, and begin
monitoring the racks:
• Set DIP switches in each sensor.
• Terminate final sensor on CANbus link.
• Install sensors on racks.
• Install CANbus cabling between sensors.
• Connect CANbus cable to the cooling unit.
• Configure the sensors in iCOM.
NOTE: The 2T sensor shown in Figure 12.4 below may differ slightly for your system, depending on
equipment installed.
Figure 12.4 2T sensor for rack monitoring

13.1.1 Setting DIP switches and labeling 2T sensors

Tools required:
• Small, non-conductive tool to set switches
• Small, Phillips-head screw driver to open 2T housing.
Each sensor requires a unique address in the CANbus loop connected to the cooling unit. We recommend
that you set the DIP-switch sensor-number setting to correspond to the sensor's location on the CANbus
run. If settings are incorrect, the control will not operate properly.
13 Hardware Installation 103