Liebert DS User Manual

DRYCOOLER

(Glycol)

Aquastat
Sensing
Bulbs

Hose
Bib*

Shutoff Valve*

EXPANSION

TANK**

Pressure
Port*

Optional Dual Pump System shown

GLYCOL

PUMPS

Check Valves*
(on Dual Pump
Systems only)

Gate Valves*

Air Vents
(typical)***

Pressure Port*

Flow Switch
Supplied with Dual
Pump Systems

Flow-Regulating
Valve*

SUPPLY

SUPPLY

RETURN

RETURN

Shutoff Valve*

Shutoff Valve*

Hose
Bib*

Hose
Bib*

Thermistor

3-Way
Chilled Glycol
Valve

ECON-O-COIL

EVAPORATOR

COIL

Service
Valve

Service
Valve

Cylinder
Unloader(s)

Sensing Bulb

LIQUID

COMPRESSOR

DISCHARGE

Muffler

External
Equalizer

Expansion
Valve

Solenoid
Valve

Sight
Glass

PARADENSER

CONDENSER

TO SECOND

REFRIGERATION

CIRCUIT

3-Way
Regulating
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

Factory Piping
Field Piping

Service/Schrader (Access) Connection No Valve Core

Service/Schrader (Access) Connections With Valve Core

Notes: 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

DPN000897
Rev. 02

Shutoff Valve*

SUCTION

Sensor

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

Filter
Dryer

®