Figure 72 Piping Schematic-Glycool With Scroll Compressor Models - Emerson Liebert DS Series User Manual

Figure 72 Piping schematic—GLYCOOL with scroll compressor models
For systems with drycoolers,
refer to 13.14.3 - Drycooler Settings.
LIEBERT DS UNIT
(and associated piping)
LIQUID
Service
Check
Valve
COMPRESSOR
DISCHARGE
Expansion
Solenoid
Sight
Valve
Valve
Glass
NOTE: Two refrigeration circuits provided.
Single refrigeration circuit shown for clarity.
FIELD PIPING
FACTORY PIPING
SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE
SERVICE / SCHRADER (ACCESS) CONNECTION NO VALVE CORE
NOTE: Schematic representation shown. This schematic does not imply or define elevations and
component location, unless specifically noted.
LIEBERT
HEAT REJECTION
DRYCOOLER
(Glycol)
ECON-O-COIL
Sensing Bulb
EVAPORATOR
COIL
SUCTION
Valve External
Equalizer
Filter Dryer
Relief valve(s) supplied
with 50 Hz EU CE units rated
maximum 480 PSIG (33 Bar).
EXPANSION
TANK**
Aquastat
Sensing
Bulbs
Hose
Shutoff Valve*
Bib*
Shutoff Valve*
3-Way
Chilled Glycol
Valve
Thermistor
3-Way
Chilled Glycol
Valve
® 3-Way
Paradenser
Regulating
Condenser
Valve
Sensor
To Second
Refrigeration
Circuit
99
Piping Schematics
Optional Dual Pump System shown
GLYCOL PUMPS
Pressure
Port*
Air Vents
(typical)***
RETURN
SUPPLY
RETURN
Shutoff Valve*
Hose
Bib*
* 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
Check Valves*
(on Dual Pump
Systems only)
Gate Valves*
Pressure Port*
Flow Switch
Supplied with Dual
Pump Systems
Flow-Regulating
Valve*
SUPPLY
Shutoff Valve*
Hose
Bib*
DPN000898
REV 3