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Product Description
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1.0 PRODUCT DESCRIPTION
1.1 General Product Information
1.1.1 Product/System Description
Liebert’s XDP refrigerant distribution unit is an interface between the building chilled water system
and the cooling modules in the Liebert XD system. It is designed to circulate and control refrigerant
to the cooling modules that are in the room with heat-producing equipment. The Liebert XDP consists
of a cabinet that includes a heat exchanger, circulating pump(s), control valve, receiver, controls,
valves and piping.
The Liebert XDP monitors room conditions and prevents coil condensation by maintaining the refrig-
erant being pumped to the cooling modules at a temperature above the room’s dew point.
All functions, such as switching pumps (if applicable), controlling refrigerant temperature, etc., are
automatic.
The Liebert XDP’s minimum recommended operating load is 20% of system nominal capacity. For
example, a Liebert XDP160 60Hz system’s minimum load would be 32 kW. Loading below this value
can unfavorably affect system operation. Consult factory for any loading below this recommendation.
The Liebert XDP is rated for 160kW (546,000 BTU/H) of cooling.
Figure 1 Liebert XDP components
1.2 Equipment Inspection
When the unit is delivered, inspect all items for visible and concealed damage. Damage should be
immediately reported to the carrier and a damage claim filed with a copy sent to Liebert or to your
sales representative.
Liebert XDP Unit
Control Valve
Liebert XD Cooling Modules
Heat Exchanger
Receiver
Pumps
Chilled Water