User manual

Piping Schematics
103 Liebert
®
DS
™
Figure 75 GLYCOOL with digital scroll compressor models
PARADENSER®
CONDENSER
LIEBERT
HEAT REJECTION
LIEBERT DS UNIT
(and associated piping)
DRYCOOLER
(Glycol)
EXPANSION
TANK **
GLYCOL
PUMPS
Aquastat
Sensing
Bulb
Pressure
Port*
Hose
Bib*
Shut-Off Valve*
Shut-Off Valve*
Optional Dual Pump System shown
Air Vents
(typical)***
Check Valves*
(on Dual Pimp
Systems only)
Gate Valves*
Pressure Port*
Flow Switch
Supplied with Dual
Pump Systems
Flow-Regulating
Valve*
RETURN
SUPPLY
Shut-Off Valve*
Hose
Bib*
3-Way
Chilled Glycol
Valve
Thermistor
3-Way
Motorized
Ball Valve
From
iCOM
Control
To
iCOM
Control
Shut-Off Valve*
Hose
Bib*
RETURN
SUPPLY
FACTORY PIPING
FIELD PIPING
SERVICE / SCHRADER (ACCESS) CONNECTION NO VALVE CORE
SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE
* 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
NOTE: SCHEMATIC REPRESENTATION SHOWN. THIS SCHEMATIC DOES NOT IMPLY OR DEFINE ELEVATIONS AND
COMPONENT LOCATION, UNLESS SPECIFICALLY NOTED.
LIQUID
28-42kW Digital Solenoid Valve
53-70kW Digital
Solenoid Valve
Service
Valve
Check
Valve
COMPRESSOR
DISCHARGE
SUCTION
EVAPORATOR
COIL
External
Equalizer
Expansion
Valve
Solenoid
Valve
Sight
Glass
Filter Drier
Relief valve(s) supplied
with 50 Hz EU CE units rated
maximum 480 PSIG (33 Bar).
Pressure
Transducer
NOTE: TWO REFRIGERATION CIRCUITS PROVIDED
SINGLE REFRIGERATION CIRCUIT SHOWN FOR CLARITY.
TO SECOND
REFRIGERATION
CIRCUIT
Sensing Bulb
ECON-O-COIL
DPN001432
Rev. 0