Liebert DS user manual Piping schematic-GLYCOOL semi-hermetic compressor models, Associated piping

Piping Schematics

Figure 61 Piping schematic—GLYCOOL semi-hermetic 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		Pressure	(on Dual Pump
			Systems only)
(Glycol)		Port*
Aquastat			Gate Valves*
Sensing
Bulbs
Hose	Shutoff Valve*	Air Vents	Pressure Port*
Bib*		(typical)***
			Flow Switch
			Supplied with Dual
			Pump Systems
	Shutoff Valve*		Flow-Regulating
			Valve*
		RETURN	SUPPLY

LIEBERT DS UNIT

(and associated piping)

	LIQUID
		Sensing Bulb
Service	Cylinder
	Unloader(s)
Valve		SUCTION

ECON-O-COIL

EVAPORATOR

COIL

RETURN

Shutoff Valve*

3-Way Chilled Glycol

Valve Thermistor

SUPPLY

Shutoff Valve*

Hose Hose

Bib* Bib*

	COMPRESSOR			External
Muffler			Service
				Equalizer
			Valve
	DISCHARGE			PARADENSER®
					3-Way
				CONDENSER	Regulating
					Valve
Expansion	Solenoid	Sight	Filter￿
Valve	Valve	Glass	Dryer	Sensor

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

TO SECOND

REFRIGERATION

CIRCUIT

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

*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

DPN000897

Rev. 02

86