REV : 12
REV DATE : 6/19
DPN000895
Page :1 /1
WATER/GLYCOL 77kW - 105kW SEMI-HERMETIC COMPRESSOR MODELS
Form No.: DPN001040_REV4
PIPING SCHEMATIC
LIEBERT DS
NOTE: SCHEMATIC REPRESENTATION SHOWN. THIS SCHEMATIC DOES NOT IMPLY OR
DEFINE ELEVATIONS AND COMPONENT LOCATION, UNLESS SPECIFICALLY NOTED.
Service
Valve
Service
Valve
External
Equalizer
Sensing Bulb
Cylinder
Unloader(s)
NOTE: TWO REFRIGERATION CIRCUITS PROVIDED.
SINGLE REFRIGERATION CIRCUIT SHOWN FOR CLARITY.
FIELD PIPING
FACTORY PIPING
Muffler
EVAPORATOR
COIL
Expansion
Valve
COMPRESSOR
LIQUID
SUCTION
Sight
Glass
Solenoid
Valve
Filter Drier
PARADENSER®
CONDENSER
TO SECOND
REFRIGERATION
CIRCUIT
Hose
Bib
Shut-Off Valve
Hose
Bib
Shut-Off Valve
Flow-Regulating
Valve
Flow Switch Supplied
with Dual Pump
Systems
Pressure Port
Gate Valves
Check Valves
(on Dual Pump
Systems only)
GLYCOL
PUMPS
EXPANSION
TANK
Hose
Bib
COOLING TOWER
AND PUMP SYSTEM
BY OTHERS
SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE
SERVICE / SCHRADER (ACCESS) CONNECTION NO VALVE CORE
OPTIONAL FACTORY PIPING
Aquastat
Sensing
Bulbs
Pressure
Port
2-Way
Regulating
Valve
Sensor
Optional
3-WayRegulating
Valve
Optional Dual Pump System shown
DRYCOOLER
(Glycol)
Air Vents
(typical)
Shut-Off Valve
Shut-Off Valve
CUSTOMER
HEAT REJECTION
LIEBERT
HEAT REJECTION
LIEBERT 77kW-105kW UNIT
(and associated piping)
RETURN SUPPLY
RETURN
SUPPLY
RETURN
SUPPLY
DISCHARGE
Relief valve(s) supplied
with 50 Hz EU CE units rated maximum
480 PSIG (33 Bar).
Check Valve
1
1
1
1
1
1
1
1
1
1
1
1
2
3
1. Components are not supplied by
Liebert but are required for
proper operation and maintenance
2. Field installed at highest point in system on
return line to pumps
3. Locate at tops of all risers and any intermediate
system high points
4. This check valve is present on 77kW models only.
4
Sensor
Bypass Valve
Bypass Valve
Threaded
Pipe Union
Typ. (4) Plcs.
1
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