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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 is rated
for 160kW (546,000BTU/H) of cooling.
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
refrigerant 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.
Figure 2 Liebert XDP components
1.1.2 Minimum Load
The Liebert XDP's minimum recommended operating load is 30% of system nominal capacity. The
Liebert XDP160 is rated for 160kW (546,000BTU/H) of cooling, therefore the system's minimum
recommended load is 48kW (163,800BTU/H). Loading below this value can unfavorably affect system
operation. Consult the factory for any loading below this recommendation.
To achieve the minimum recommended load, the capacity of all connected modules must total at least
48kW (163,800BTU/H). See
Table 1.
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 Emerson and to your
sales representative.
Table 1 Number of Liebert XD cooling modules required to achieve at least 48kW
(163,800
BTU/H) load
Liebert XD Module Type
XDCF10 XDV8 XDV10 XDO16 XDO20 XDH20 XDH32 XDR20
Number of Liebert XD
cooling modules required
to achieve at least 48kW
(163,800BTU/H) load
5 6 5 3 3 3 2 3
Liebert XDP Unit
Control Valve
Liebert XD Cooling Modules
Heat Exchanger
Receiver
Pumps
Chilled Water