Liebert DS User Manual

Compressor

Muffler

Service

Valve

Cylinder

Unloader (s)

Evaporator 

Coil

Note: Schematic representation shown. This schematic does not imply or define elevations

and component location unless specifically noted ..
Two refrigeration circuits provided.  Single refrigeration circuit shown for clarity.

Solenoid

Valve

Expansion
Valve

Relief valve(s) 
supplied with 50Hz 
EU CE units rated
maximum 480 PSIG 
(33 Bar).

Paradenser® 

Condenser

Customer Heat Rejection

Liebert

Heat Rejection

(Glycol )

Bypass Valve

Expansion 

Tank**

Hot Gas Reheat

Hose Bib *

Hose 

Bib *

Shutoff Valve *

Shutoff Valve *

Pressure Port *

Pressure 
Port *

Shutoff Valve *

Hose 

Bib *

Air Vents 

(typical) ***

Shutoff Valve *

Sensor

Aquastat
Sensing 
Bulb

Check Valves *
(on Dual Pump 

Systems only)

Flow Switch 
Supplied with Dual 
Pump Systems

Flow-Regulating 
Valve

Supply

Return

Return

Supply

Liquid

Suction

2-Way 
Regulating  
Valve

Optional
3-Way
Regulating  
Valve

Check Valve

Hot Gas Reheat 
Valve

Discharge

(and associated piping)

To Second 
Refrigeration 
Circuit

Service/Schrader (Access) Connection No Valve Core
Service/Schrader (Access) Connection With Valve Core

Factory Piping
Field  Piping
Optional Factory Piping

Service

Valve

External 

Equalizer

Sensing 

Bulb

Optional Dual Pump System Shown

Gate Valves *

Filter 

Dryer

Sight 

Glass

Cooling Tower 

and Pump 

System by 

Others

Return Supply

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

*

**

***

DPN00895
Rev. 2