Technical Specifications

Liebert XD Cooling Modules—Liebert XDCF, Liebert XDH, Liebert XDO, Liebert XDR and Liebert XDV
78
4.18 Low-Voltage Wiring—Liebert XDV Smart Modules
The low-voltage connections for Liebert XDV smart modules are on the rear right side of the modules.
The power connections are shown in Figure 78 and the dry contacts can be connected to a monitoring
module, such as Liebert SiteScan
®
. Make low-voltage connections on these modules according to
site-specific drawings. The module must be installed in accordance with national and local wiring
regulations.
Terminal block connections 37, 38 and 82 through 87 can be connected to a monitoring unit, such as
Liebert SiteScan. The remote shutdown, condensate detection alarm and fan failure alarms operate
independently of each other.
• Contacts 37 and 38 are for remote shutdown.
• Contacts terminals 82, 83 and 84 are activated by the condensate detection alarm.
• T82 is used for normally open contact closure requirements.
• T83 is common.
• T84 is used when normally closed contact closure is required.
• Contacts terminals 85, 86 and 87 are activated by the fan failure alarm.
• T85 is for normally open contact closure requirements.
• T86 is common.
• T87 is used when normally closed contact closure is required. The condensate detection alarm
and the fan failure alarm operate independently of each other.
• P66 and P67 are CAN bus ports.
Figure 78 Low-voltage connections for Liebert XDV smart modules
Optional Dry Contacts
Low-Voltage Connections
60Hz MODELS ONLY
Field-wiring connections
at terminal strip to be NEC
Class 2. Use switch contacts
with 75VA minimum rating.
50Hz MODELS ONLY
Field-wiring connections
at terminal strip for safety
extra low voltage circuits
only. Use switch contacts
rated 75VA minimum,
24VAC maximum.