Liebert Liebert, Heat Rejection, LIEBERT DS UNIT and associated piping, Piping Schematics

Piping Schematics

Figure 64 GLYCOOL with digital scroll compressor models

LIEBERT	EXPANSION	Optional Dual Pump System shown
HEAT REJECTION	TANK**	GLYCOL
		PUMPS
			Check Valves*
DRYCOOLER	Pressure		(on Dual Pimp
			Systems only)
(Glycol)	Port*		Gate Valves*
Aquastat
Sensing
Bulb
Hose	Shut-Off Valve*	Air Vents	Pressure Port*
Bib*		(typical)***
			Flow Switch
			Supplied with Dual
			Pump Systems
	Shut-Off Valve*		Flow-Regulating
			Valve*
		RETURN	SUPPLY

LIEBERT DS UNIT

(and associated piping)

LIQUID
28-42kW Digital Solenoid Valve	Sensing Bulb
53-70kW Digital
Solenoid Valve	SUCTION

ECON-O-COIL

EVAPORATOR

COIL

3-Way Chilled Glycol

Valve Thermistor

RETURN

Shut-Off Valve*

Hose

Bib*

SUPPLY

Shut-Off Valve*

Hose

Bib*

Service
Valve
Check	COMPRESSOR	External
Valve
		Equalizer

DISCHARGE

Expansion Solenoid		Sight
			Filter Drier
Valve	Valve	Glass		Pressure
		Relief valve(s) supplied		Transducer
		with 50 Hz EU CE units rated
		maximum 480 PSIG (33 Bar).

3-Way Motorized Ball Valve

PARADENSER®

CONDENSER

TO SECOND

REFRIGERATION

CIRCUIT

From iCOM Control

To iCOM Control

NOTE: TWO REFRIGERATION CIRCUITS PROVIDED

SINGLE REFRIGERATION CIRCUIT SHOWN FOR CLARITY.

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.DPN001432 Rev. 0

89