Technical Specifications

Liebert iCOM
143
Figure 133 Single-circuited Liebert XDHs
Liebert XDH Dual-Circuited CANbus Connections
The Liebert XD Smart Modules are to be tied only to the Liebert XDP or Liebert XDC that they are
mechanically connected to. For Liebert XDHs with the top and bottom circuits tied to different
Liebert XDPs or Liebert XDCs, the control boards must be connected in the same manner. See
Figure 134.
Figure 134 Dual-circuited Liebert XDHs
7.11.4 Connecting to the Liebert XD Smart modules
Liebert XDO CANbus Port Locations
The Liebert XDO CANbus ports are located on the side of the electrical box. The cable from the
Liebert XDP or Liebert XDC side will be connected to Port P66. The leaving cable will be connected to
Port P67. See Figure 135.
Electric Box in Middle
of Cooling Module
(typical)
Electric Box on Bottom
of Cooling Module
(typical)
To Liebert XDP #2 or
Liebert XDC #2
XDH20/32 First
Cooling Module
XDH20/32 Next
Cooling Module
DPN000785
Pg. 2, Rev. 0
To next Liebert XDH Cooling
Module or Remote
T/H Sensor B to Liebert
XDP #2 or Liebert XDC #2
To Liebert XDP #1
or Liebert XDC #1
To next Liebert XDH
or Remote T/H Sensor B
connected to Liebert XDP #1
or Liebert XDC #1
Electric Box in Middle
of Cooling Module
(typical)
Electric Box on Bottom
of Cooling Module
(typical)
To Liebert XDP or
Liebert XDC unit
XDH20/32 First
Cooling Module
DPN000785
Pg. 2, Rev. 0
XDH20/32 Next
Cooling Module
To next Liebert XDH
Cooling Module or
Remote T/H Sensor B