Emerson Liebert Xtreme Density - Manual (Page 15)

System Description
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1.9 Liebert XDC—Refrigerant Chiller
The Liebert XDC is an indoor chiller that connects directly to the Liebert XD cooling modules and pro-
vides refrigerant circulation and control. The Liebert XDC keeps the refrigerant temperature above
the dew point and eliminates the need for a separate pumping unit in the direct system configuration.
The Liebert XDC employs two sets (for redundancy) of remote sensors to determine the temperature
and humidity in the air and instantly adjusts refrigerant supply temperature to compensate for
changing conditions.
1.9.1 Liebert XDC Minimum Load
The Liebert XDC’s minimum recommended operating load is 40% of system nominal capacity. For
example, a Liebert XDC160 60Hz system’s minimum load would be 64 kW. Loading below this value
can unfavorably affect system operation. Consult factory for any loading below this recommendation.
Figure 11 Liebert XD Chiller unit