Liebert DS Liebert, Heat Rejection, Piping schematic-GLYCOOL with scroll compressor models

Piping Schematics

Figure 62 Piping schematic—GLYCOOL with scroll compressor models

For systems with drycoolers,

refer to 12.11.3 - Drycooler Settings.

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

LIEBERT DS UNIT (and associated piping)

LIQUID

Sensing Bulb

SUCTION

ECON-O-COIL

EVAPORATOR COIL

		RETURN
3-Way		Shutoff Valve*
Chilled Glycol
Valve	Thermistor	Hose
3-Way		Bib*
Chilled Glycol
Valve

SUPPLY Shutoff Valve*

Hose

Bib*

Check	Service
Valve COMPRESSORValve		External
		Equalizer

DISCHARGE

Paradenser ®

Condenser

Expansion	Solenoid	Sight Filter Dryer
Valve	Valve	Glass	Relief valve(s) supplied

with 50 Hz EU CE units rated To Second maximum 480 PSIG (33 Bar). Refrigeration

Circuit

3-Way Regulating Valve

Sensor

NOTE: Two refrigeration circuits provided.

Single refrigeration circuit shown for clarity.

		FIELD PIPING	* Components are not supplied by
		FACTORY PIPING	Liebert but are recommended for
	SERVICE / SCHRADER (ACCESS) CONNECTION WITH VALVE CORE		proper circuit operation and
			maintenance
	SERVICE / SCHRADER (ACCESS) CONNECTION NO VALVE CORE		** Field installed at highest point in
			system on return line to pumps
NOTE: Schematic representation shown. This schematic does not imply or define elevations and			*** Locate at tops of all risers and
			any intermediate system high points
component location, unless specifically noted.
			DPN000898
			REV 3

87