Liebert Precision Cooling System DS - Manual (Page 16)

Cooling Configurations
6
2.0 C
OOLING
C
ONFIGURATIONS
NOTE
All field-installed piping must comply with applicable local, state and federal codes.
Air-Cooled
Air-cooled unit piping is spun closed from
the factory and contain a nitrogen holding
charge. Each installation requires refrigerant
piping to a condenser.
Glycol-Cooled
Glycol-cooled units are factory-charged and
tested. Field-installed piping is required from the
unit to the drycooler and pump package.
Water-Cooled
Water-cooled units are factory-charged and
tested. Field-installed water piping is
required from the unit to the cooling tower.
GLYCOOL
GLYCOOL units are factory-charged and tested. Field-installed
piping is required from the unit to the drycooler and pump
package. An additional coil is included for use when fluid
temperatures are sufficiently low (below room temperature).
Cooling is provided by circulating cold glycol through this
second coil, reducing compressor operation.
Dual-Cool
This system has all of the features of a compressorized
system, but adds a second cooling coil that is connected
to a source of chilled water. Cooling is provided by
circulating water through this second coil and reducing
compressor operation.