Liebert DS User Manual

Sensing Bulb

COOLING TOWER

AND PUMP

SYSTEM

BY OTHERS

RETURN SUPPLY

EXPANSION

TANK**

DRYCOOLER

(Glycol)

GLYCOL

PUMPS

Optional Dual Pump System shown

Check Valves*

(on Dual Pump

Systems only)

Gate Valves*

Pressure Port*

Flow Switch
Supplied with Dual
Pump Systems

Flow-Regulating
Valve*

Aquastat
Sensing
Bulbs

Hose
Bib*

Shut-Off Valve*

Shut-Off Valve*

Pressure
Port*

Air Vents
(typical)***

RETURN

SUPPLY

HOT GAS REHEAT

LIQUID

28-42kW Digital Solenoid Valve

53-70kW Digital
Solenoid Valve

Service
Valve
Check
Valve COMPRESSOR

DISCHARGE

Service
Valve

SUCTION

EVAPORATOR

COIL

PARADENSER

®

CONDENSER

External
Equalizer

Hot Gas Reheat
Valve

Check Valve

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

Optional 3-Way
Motorized Ball
Valve

Shut-Off Valve*

Shut-Off Valve*

Hose
Bib*

Hose
Bib*

2-Way
Motorized
Ball Valve

From
iCOM
Control

To
iCOM
Control

RETURN

SUPPLY

FACTORY PIPING
FIELD PIPING

OPTIONAL FACTORY PIPING

SERVICE / SCHRADER (ACCESS) CONNECTION NO VALVE CORE

SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE

NOTE: SCHEMATIC REPRESENTATION SHOWN. THIS SCHEMATIC DOES NOT IMPLY OR DEFINE ELEVATIONS AND
            COMPONENT LOCATION, UNLESS SPECIFICALLY NOTED.

*    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

DPN001430
Rev. 0