Liebert DS Service Manual - Piping Schematics, Passwords & Nomenclatures

Piping Schematics

Figure 63 Piping schematic—water/glycol with digital scroll compressor models

CUSTOMER

HEAT REJECTION

COOLING TOWER

AND PUMP

SYSTEM

BY OTHERS

RETURN SUPPLY

	LIEBERT	EXPANSION	Optional Dual Pump System shown
		EXPANSION
		TANK**	GLYCOL
	HEAT REJECTION	TANK**

			PUMPS
			PUMPS
				Check Valves*
				(on Dual Pump
	DRYCOOLER	Pressure		Systems only)
	DRYCOOLER
	(Glycol)
	(Glycol)	Port*		Gate Valves*
	Aquastat	Port*


	Sensing
	Bulbs
	Hose	Shut-Off Valve*	Air Vents	Pressure Port*
	Bib*		(typical)***	Pressure Port*
	Bib*		(typical)***
				Flow Switch
				Supplied with Dual
				Pump Systems
	Shut-Off Valve*			Flow-Regulating
	Shut-Off Valve*			Valve*
				Valve*
			RETURN	SUPPLY

	LIEBERT DS UNIT				HOT GAS REHEAT			RETURN
(and associated piping)							Optional 3-Way
		LIQUID					Motorized Ball	Shut-Off Valve*
28-42kW Digital Solenoid Valve Sensing Bulb							Valve	Hose
28-42kW Digital Solenoid Valve Sensing Bulb						EVAPORATOR		Hose
53-70kW Digital						EVAPORATOR		Bib*
53-70kW Digital						COIL		Bib*
Solenoid Valve				SUCTION
				SUCTION
	Service					Hot Gas Reheat
	Service					Valve
	Valve		Service			Check Valve	2-Way
	Check		Valve	External			2-Way
	Check		Valve				Motorized
	Valve COMPRESSOR						Motorized
	Valve COMPRESSOR			Equalizer			Ball Valve
				Equalizer			Ball Valve
	DISCHARGE
						PARADENSER®
						CONDENSER
Expansion Solenoid		Sight	Filter Drier
Valve	Valve	Glass			Pressure
		Relief valve(s) supplied			Transducer
		with 50 Hz EU CE units rated				TO SECOND
		maximum 480 PSIG (33 Bar).				REFRIGERATION
						CIRCUIT

NOTE: TWO REFRIGERATION CIRCUITS PROVIDED

SINGLE REFRIGERATION CIRCUIT SHOWN FOR CLARITY.

SUPPLY

Shut-Off Valve*

Hose

Bib*

From iCOM Control

To iCOM Control

FACTORY PIPING

FIELD PIPING

OPTIONAL FACTORY 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	DPN001430
COMPONENT LOCATION, UNLESS SPECIFICALLY NOTED.	Rev. 0

88

Image 98

Liebert DS user manual Customer Heat Rejection

Contents

Liebert DS Page Table of Contents Piping MaintenanceElectrical Connections 108 Hvac Maintenance Checklist Compressor Replacement Figures Page Page Tables Viii Important Safety Instructions Page Liebert DS Components and Nomenclature Downflow model component locations Upflow model component locations U a = Dual-Cooling Water/Glycol Three-stage Compressor Cooling Configurations Glycool Air Distribution-Downflow Units PRE-INSTALLATION GuidelinesRoom Preparation Upflow ducting configurations Air Distribution-Upflow Units Connections and System Setup Operating Conditions Shipping weights-approximate, kg Liebert DS Dimensions and WeightsShipping dimensions-domestic and export, inches mm 028/035/042 053/070/077 Approximate Model No 028, 035 Front View Dry Weight, lb kg Approximate Model No 028, 035Top View 51mm Dry Weight lb. kg ApproximateDPN000894 GLYCOOL/Dual-Cool Dry Weight, lb kg Approximate Model 053 070 077 Front View Dry Weight, lb kg Approximate Model No 070 077 Compressor Dry Weight, lb kg, Approximate Type Model 053 TOP View Front View Dry Weight, lb kg approximate Compressor Type ModelTop View Dry Weight, lb kg approximate Compressor Type Model 105 Dry Weight, lb kg Model No 028-042 Dry Weight, lb kg approximate Compressor Type Model Alternate Refrigerant Piping Entrance Model No 053, 070 Top View Model 105 Weights-upflow, air-cooled, 105kW 30 ton, allDry Weight, Approximate, lb kg Compressor GLYCOOL/Dual-Cool Dimensions, in. mm Model Height, in. mm Turning Vane Floor stand dimensions-downflow, 53-77kW 15-22 ton models Floor stand dimensions-downflow, 105kW 30 ton models Dimensions for upflow, 28-42kW 8-12 ton Models Blower Supply Blower outlet and deck dimensions-upflow, 53-77kW 15-22 ton Dimensions, in. mm Models Blower Supply Blower outlet and deck dimensions-upflow 105kW 30ton Dimensions, in. mm Models Blower Rear return filter box dimensions Dimensions, in mm Compressor Type # Filters Left Side Views Right Side Views Check One Packaging Material Equipment Inspection and Handling Unpacking the Unit Step 181659P1 Rev Removing the Unit from the Skid With a Forklift Step Moving the unit to its installation location Removing Piano Jacks Removing Liebert DS from Skid Using Rigging Rev Lifting Sling Equal Equal Distance Distance Detail a Semi-Hermetic Compressor Spring Isolation SystemPlacing the Unit on a Floor Stand Liebert Floor Stand front discharge shown Disassembling the Liebert DS for Transport Disassembly-Downflow UnitsRequired Equipment Reheat-Optional Component Remove the Compressor Assembly Remove the Filter and Electric Box Assembly Reassembly-Downflow Units Reconnecting Piping, Charging and Replacing Panels Reassembly Checklist Filter & Electric Box Assembly Filter & Electric Box Assembly 940mm 1930mm Assembly Assembled Height 1930mm 59-7/16 Semi-Hermetic Compressor Scroll Compressor Filter and Electric Box AssemblyBlower & Coil Assembly Dry Weight, lb kg Approximate Includes Panels Component Air Cooled Dual Cool Filter & Electric 1510mm Disassembly-Upflow Units Remove Compressor Assembly Remove Blower and Electric Box Assembly Reassembly-Upflow Unit 2159mm 31-1/4 794mm 85 2159mm Assembled Length 660mm 2083mm 108 2743mm Assembled Length 82 2083mm Blower & Electric Box Assembly 31-1/4 REV REV 31-1/4 794mm Electrical Connections Downflow LOW Volt Section Optional Electrical Connections Electrical Field Connection DescriptionsStandard Electrical Connections Optional Low Voltage Terminal Package Connections Piping Condensate Piping-Field-InstalledFluid Connections Gravity Drain Condensate Pump Gravity drain for downflow and upflow units General Guidelines Requirements of Systems Using Water or GlycolHumidifier Supply Water-Optional Infrared Refrigeration Piping Leak Checking of Unit and Field Piping Piping Guidelines-Air-Cooled Units Recommended refrigerant line sizes OD copper inches Liquid Line, lb kg Fan Lee-Temp Model Speed Includes receiver Fan Speed Control Materials Supplied Fan Speed Control Leak Check and Evacuation ProcedureFan Speed Control Piping Fan speed suction pressure transducer settings Fan Speed Charging Lee-Temp Controlled Materials Supplied Lee-Temp Leak Check and Evacuation ProcedureLee-Temp Piping Lee-Temp Receiver Refrigerant Level Lee-Temp suction pressure transducer settingsLee-Temp Charging Piping Schematics Piping schematic-air-cooled, semi-hermetic compressor models Lee-Temp Fan Speed Customer Heat Rejection Liebert DS Unit Liebert Piping schematic-GLYCOOL semi-hermetic compressor models Associated piping Liebert Customer Heat Rejection Glycool with digital scroll compressor models Optional piping schematic for Econ-O-Coil DPN000805 Rev Connection Size / Opening Point Description Inches mm DPN000804 Front of Unit 53kW 15ton / 70 & 77kW 20 & 22ton DPN000929 Rev DPN000933 HUM E1 E2 Front of Unit DPN001015 CGD TOP View Front Section View Left Side Section ViewTop View of Unit Point Description In. mm Left Side Section View of Unit 53kW 15 ton/70 & 77kW 20 & 22 ton Left Side Section View 53kW 15 tons/70 & 77kW 20 & 22 ton Left Side Section View Front Section View Piping data-upflow, air-cooled 105kW 30 ton, all Point Description Connection Size / Opening Connection Size Point Description Inches mm Opening, inches mm Electrical Checklist for Completed InstallationMoving and Placing Equipment Other 108 109 Commissioning Procedure With Panels On Filter quantities, downflow units MaintenanceFilters Filter quantities, upflow units Blower Drive System Filter Replacement Procedure-Downflow UnitsFilter Replacement Procedure-Upflow Units Belt Removal Upflow Motor AccessBelt Installation and Tensioning Blower Bearing Inspection Blower Bearing MaintenanceBlower Bearing Replacement Blower Motor Correct orientation of float switch Humidifier Condensate Drain Condensate Drain and Condensate Pump SystemsChanging Humidifier Lamps Infrared Bulbs Compressor Air-Cooled Condenser and DrycoolersReheat-Electric Reheat Three-Stage and SCR Compressor Replacement Facility Fluid and Piping Maintenance Paradenser-Water-Cooled Condenser Cleaning InstructionsAdjustment-Johnson Controls/Penn Johnson Valves Water/Glycol Control Valves Location Testing Function of ValveAdjustment 12.11.2Motor Ball Valve-Digital Scroll Compressors Aquastat settings-six-fan drycoolers 12.11.3Drycooler SettingsAquastat settings-two-fan through four-fan drycoolers Aquastat settings-eight-fan drycoolers Hvac Maintenance Checklist Compressor Section Refrigeration PipingWater-Cooled Condensers Electrical Panel Air-Cooled Condenser / Drycooler Glycol PumpPage Ti n Ne tIti That