1.9 Liebert XDC—Refrigerant Chiller
The Liebert XDC is an indoor chiller that connects directly to the Liebert XD cooling modules and
provides refrigerant circulation and control. The Liebert XDC keeps the refrigerant temperature above
the room dew point at the sensors. The Liebert XDC contains a refrigerant to refrigerant heat exchanger
along with two tandem scroll compressor circuits. This allows heat rejection to the outdoor ambient air by
using either the air-cooled condensers or water/glycol shell-and-tube condensers much like a standard
computer room air conditioning unit. The Liebert XDC employs two remote sensors (for redundancy) to
determine the temperature and humidity in the air and instantly adjusts refrigerant supply temperature
to compensate for changing conditions.
The Liebert XDC uses the Liebert iCOM®. This advanced control enables the user to monitor essentially
all aspects of the Liebert XD Precision Cooling system, from operating status to maintenance
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.
Figure 1.10 Liebert XD Chiller
1.10 Liebert XDP—Pumping Unit
The Liebert XDP isolates the building’s chilled water circuit from the pumped refrigerant circuit. The
Liebert XDP circulates refrigerant to Liebert XD cooling modules while preventing condensation by
maintaining the refrigerant’s temperature above the room dew point at the sensors. The Liebert XDP
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.
The Liebert XDP uses the Liebert iCOM. This advanced control enables the user to monitor essentially all
aspects of the Liebert XD Precision Cooling system, from operating status to maintenance.
Vertiv
| Liebert® Xtreme Density™ System Design Manual |
15
Содержание Liebert XD Series
Страница 1: ...Liebert Xtreme Density System Design Manual...
Страница 18: ...Vertiv Liebert Xtreme Density System Design Manual 18 This page intentionally left blank...
Страница 20: ...Vertiv Liebert Xtreme Density System Design Manual 20 This page intentionally left blank...
Страница 45: ...Figure 3 22 Liebert XD return header orientation Vertiv Liebert Xtreme Density System Design Manual 45...
Страница 66: ...Figure 4 2 Overall dimensions Vertiv Liebert Xtreme Density System Design Manual 66...
Страница 76: ...Figure 4 12 Liebert XDO internal mounting location Vertiv Liebert Xtreme Density System Design Manual 76...
Страница 88: ...Figure 4 21 Liebert XDV dimensions Vertiv Liebert Xtreme Density System Design Manual 88...
Страница 90: ...Figure 4 23 Suspending single Liebert XDV from Unistruts Vertiv Liebert Xtreme Density System Design Manual 90...
Страница 103: ...Figure 5 4 Piping locations floor stand and valve assembly Vertiv Liebert Xtreme Density System Design Manual 103...
Страница 112: ...Figure 5 16 Front view of Liebert XDP and electrical enclosure Vertiv Liebert Xtreme Density System Design Manual 112...
Страница 115: ...Figure 5 19 Liebert XDP high voltage connections 60Hz Vertiv Liebert Xtreme Density System Design Manual 115...
Страница 116: ...Figure 5 20 Liebert XDP high voltage connections 50Hz Vertiv Liebert Xtreme Density System Design Manual 116...
Страница 120: ...Figure 6 2 Condenser planning dimensional data Six fan units Vertiv Liebert Xtreme Density System Design Manual 120...
Страница 121: ...Figure 6 3 Typical condenser footprint dimensions Vertiv Liebert Xtreme Density System Design Manual 121...
Страница 138: ...Figure 6 13 Drycooler planning dimensional data Eight fan units Vertiv Liebert Xtreme Density System Design Manual 138...
Страница 152: ...Vertiv Liebert Xtreme Density System Design Manual 152 This page intentionally left blank...
Страница 166: ...Figure 7 7 Modules on a single chain Vertiv Liebert Xtreme Density System Design Manual 166...
Страница 167: ...Figure 7 8 Modules on two chains Vertiv Liebert Xtreme Density System Design Manual 167...
Страница 170: ...Figure 7 11 CAN Isolator location within the Liebert XDP XDC Vertiv Liebert Xtreme Density System Design Manual 170...
Страница 182: ...Vertiv Liebert Xtreme Density System Design Manual 182 This page intentionally left blank...
Страница 198: ...Figure 9 7 Liebert XDP model number nomenclature Vertiv Liebert Xtreme Density System Design Manual 198...
Страница 199: ......