Liebert DS User Manual
Piping Schematics
87
Figure 62 Piping schematic—GLYCOOL with scroll compressor models
3-Way
Chilled Glycol
Valve
Chilled Glycol
Valve
3-Way
Chilled Glycol
Valve
Chilled Glycol
Valve
NOTE: Schematic representation shown. This schematic does not imply or define elevations and
component location, unless specifically noted.
component location, unless specifically noted.
Service
Valve
* Components are not supplied by
Liebert but are recommended for
proper circuit operation and
maintenance
** Field installed at highest point in
system on return line to pumps
*** Locate at tops of all risers and
any intermediate system high points
Liebert but are recommended for
proper circuit operation and
maintenance
** Field installed at highest point in
system on return line to pumps
*** Locate at tops of all risers and
any intermediate system high points
External
Equalizer
Equalizer
Sensing Bulb
NOTE: Two refrigeration circuits provided.
Single refrigeration circuit shown for clarity.
Single refrigeration circuit shown for clarity.
FIELD PIPING
FACTORY PIPING
FACTORY PIPING
EVAPORATOR
COIL
COIL
Expansion
Valve
Valve
COMPRESSOR
LIQUID
SUCTION
Sight
Glass
Glass
Solenoid
Valve
Valve
Filter Dryer
DPN000898
REV 3
REV 3
Paradenser
Condenser
Condenser
To Second
Refrigeration
Circuit
Hose
Bib*
Bib*
Hose
Bib*
Bib*
Shutoff Valve*
Shutoff Valve*
Shutoff Valve*
Shutoff Valve*
Flow-Regulating
Valve*
Valve*
Flow Switch
Supplied with Dual
Pump Systems
Supplied with Dual
Pump Systems
Pressure Port*
Gate Valves*
Check Valves*
(on Dual Pump
Systems only)
(on Dual Pump
Systems only)
GLYCOL PUMPS
EXPANSION
TANK**
TANK**
Hose
Bib*
Bib*
ECON-O-COIL
LIEBERT
HEAT REJECTION
HEAT REJECTION
DRYCOOLER
(Glycol)
(Glycol)
Aquastat
Sensing
Bulbs
Sensing
Bulbs
Pressure
Port*
Port*
3-Way
Regulating
Valve
Regulating
Valve
Sensor
Air Vents
(typical)***
(typical)***
LIEBERT DS UNIT
(and associated piping)
RETURN
RETURN
SUPPLY
SUPPLY
Relief valve(s) supplied
with 50 Hz EU CE units rated
maximum 480 PSIG (33 Bar).
with 50 Hz EU CE units rated
maximum 480 PSIG (33 Bar).
Thermistor
DISCHARGE
SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE
SERVICE / SCHRADER (ACCESS) CONNECTION NO VALVE CORE
Check
Valve
Valve
Optional Dual Pump System shown
®
For systems with drycoolers,
refer to 12.11.3 - Drycooler Settings.