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Liebert 3000 7.6.1Piping Considerations, 7.6.2Condenser Water Requirements, 7.6.3Regulating Valve

Models: 3000

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7.6.1Piping Considerations

Split System Models

7.6Water and Glycol Cooled Condensing Units

For installation guidelines, refer to Installing the Indoor Condensing Unit on page 52.

7.6.1Piping Considerations

It is recommended that manual service shut-off valves be installed at the supply and return line to each unit. This will provide for routine service or emergency isolation of the unit.

When the water source for the condenser is of poor quality, it is good practice to provide cleanable fil- ters in the supply line. These filters will trap the particles in the water supply and extend the service life of the water cooled condenser.

3-Ton Connection Sizes

Condenser Water Inlet	7/8" OD Cu
Condenser Water Outlet	7/8" OD Cu
Suction Line	1-1/8 - 12 male #11 quick connect
Liquid Line:	5/8 - 18 male #6 quick connect

5-Ton Connection Sizes

Condenser Water Inlet	1-1/8" OD Cu
Condenser Water Outlet	1-1/8" OD Cu
Suction Line	1-7/16" - 16 male #12 quick connect
Liquid Line	1-1/16" - 12 male #10 quick connect

Table 32 Water and glycol cooled condensing unit data

		Net Weight		Glycol Volume
	Model
	Model	lbs	kg	gal	liters

	MC_44W	190	86	1.2	4.5
	MC_43W	190	86	1.2	4.5
	MC_43W
	MC_69W	282	128	2.0	7.6
	MC_68W	282	128	2.0	7.6
	MC_68W

7.6.2Condenser Water Requirements

The standard maximum water pressure is 150 psig (1034 kPa). For applications above this pressure, consult the factory about high pressure systems.

The system will operate in conjunction with a cooling tower, city water, or drycooler.

7.6.3Regulating Valve

For details, refer to sections 4.3.1 - Standard Valve - 150psig (1034kPa) System for 3 & 5 Ton

Units (Johnson Controls Valve) High Pressure Valve - 350psig (2413kPa) System for 5 Ton Units (Johnson Controls Valve), 4.3.2 - High Pressure Valve - 350 psig (2413 kPa) System for 3 Ton Units (Metrex Valve), and 4.3.3 - Testing Valve Function.

7.6.4Glycol Systems

For split system glycol systems, use drycooler and pump data found in 5.0 - Glycol/GLYCOOL Cooled Models. See Table 18 - Drycooler data.

Electrical control interconnect to drycooler is wired from water/glycol condensing unit.

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Liebert 3000 7.6.1Piping Considerations, 7.6.2Condenser Water Requirements, 7.6.3Regulating Valve, 7.6.4Glycol Systems

Contents

Liebert Challenger Installation Manual- 3 &5 Tons,50& 60HzPage TABLE OF CONTENTS 6.0 CHILLED WATER MODELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIGURES TABLES Water Cooled Models 1.0INTRODUCTION1.1.1Self Contained Systems Air Cooled Models Glycol Cooled Models2.2Equipment Inspection 2.0INSTALLATION2.1Room Preparation 2.3Location Considerations2.4.2Removal of Skid Unit net weightInstallation Figure 1 Removing Challenger from skidUNIT DIMENSIONAL DATA REAR VIEW Figure 2 Upflow BU cabinet dimensionsInstallation rear return configurationOPTIONAL FLOOR STAND DIMENSIONAL DATA UNIT DIMENSIONAL DATAFLOOR CUTOUT DIMENSIONS Figure 3 Downflow BF cabinet dimensions2.5Piping Considerations 2.5.1Drain LinePiping connection size HotWater Return Liquid Refrigerant LineHot GasRefrigerant Line Hot Water SupplyCondensate Pump Line HumidifierWater SupplyLineSuction Refrigerant Line Condensate DrainHotWater Return Condenser SupplyLineCondenser Return Line HumidifierWater SupplyLinePiping outlet locations through Installation 2.6Electrical Connections 4.Factory installed disconnect switch. Optional5.Three phase electric service not by Liebert Figure 8 Electrical connections2.7Balancing the Air Distribution 2.7.1Under-FloorDischarge Systems2.8Checklist for Completed Installation 2.7.3Plenum Installation2.7.2Ducted Applications Installation 3.0AIR COOLED MODELS 3.1Condenser Location3.2Electrical Connections 3.2.1Line VoltageAir cooled condenser statistics Figure 9 Air cooled condensersTable Air Cooled Models3.3Refrigerant Piping Table 5 Recommended line sizes — OD copper inchesEquivalent lengths feet for various pipe fittings 3.4.1Materials SuppliedTable TableDehydration/Leak Test Condenser Coil Schrader Valve Fusible Plug Table 10 Refrigerant control settings psi kPa 3.4.3Charging3.5.1Piping 3.5.2Materials Supplied Table 11 Refrigerant control settings psi kPa Dehydration/Leak Test3.5.4Charging SINGLE CIRCUIT SHOWN 4.1Piping Considerations 4.2Condenser4.0WATER COOLED MODELS Figure 12 Water cooled general arrangement Water Cooled Models4.3Water Regulating Valve AdjustmentFigure 13 Johnson Controls valve adjustment Manual FlushingTable 12 Refrigerant control settings psi kPa 4.3.3Testing Valve FunctionFigure 14 Metrex Valve adjustment Manual Flushing5.3Electrical Connections 5.2Drycooler Installation5.1Drycooler Location 5.0GLYCOL/GLYCOOL COOLED MODELSTable 13 Room dew point temperatures 5.4 Glycol Piping5.5Filling Instructions 5.5.1 Preparing the System for FillingTable 5.5.2Glycol Solutions Table 16 Ethylene glycol concentrations5.5.3Filling the System 438 mm wide. Dual pump packages ar Figure 15 Drycoolers and pump packages1.Single pump packages are 17-1/4 32-1/4819 mm wideTable 18 Drycooler data Table 17 Mounting hole dimensional dataFigure 16 Pump packages—expansiontank Table 19 Glycol pump dataExpansion Tank Field Installed at Figure 18 GLYCOOL general arrangement Glycol/GLYCOOL Cooled Models5.6Condenser 5.7.3Testing Valve FunctionTable 20 Refrigerant control settings psi kPa 5.7Glycol Regulating Valve3-WAYVALVE 6.1Piping Considerations6.0CHILLED WATER MODELS 2-WAYVALVE3-WAYVALVE 2-WAYVALVE7.1.2Water/Glycol Cooled Condensing Units 7.0SPLIT SYSTEM MODELS7.1.1Air Cooled Condensing Units 7.2.1Line Voltage7.3Piping Considerations 7.3.1 Refrigerant LoopTable 21 Unit refrigerant charge Table 24 Line coupling sizesFigure 21 Refrigerant piping diagram Split System Models7.3.2Quick Connect Fittings UNIT DIMENSIONS See Table 7.4Outdoor Air Cooled Condensing UnitsSplit System Models Model Numbers Split System Models FOOTPRINT DIMENSIONSUNIT DIMENSIONSINTAKE see Table PIPING & ELECTRICAL CONNECTIONS see TableModel Numbers SL-11081PG 8A 7.5.1Installing the Indoor Condensing Unit 7.5Centrifugal Air Cooled Condensing UnitsTable 30 Indoor centrifugal condensing unit 3/8 threaded rod field-supplied 3/8 hex nut Figure 25 Detail of ceiling hanging bracketSplit System Models 3/8 washer Sleeve Isolator 3/8 fender washer7.5.2Ducting Table 31 Airflow CFM CMHDIMENSIONAL DATA PIPING CONNECTIONSDPN000207_Rev0 Split System Models1 5/8 DPN000226_Rev0 GLYCOL COOLED AIR COOLEDWATER COOLED Figure 30 Split systems general arrangement7.6.3Regulating Valve 7.6.1Piping Considerations7.6.2Condenser Water Requirements 7.6.4Glycol SystemsDIMENSIONAL DATA PIPING CONNECTIONSDPN000209_Rev0 Split System Models32 812.8mm CABINET DIMENSION DPN000228_Rev0 Split System Models8.0R407C REFRIGERANT R407C Refrigerant8.1Calculating Subcooling ExampleNotes R407C RefrigerantR407C Refrigerant Page that Ensuring The High Availability0f Mission-CriticalData And Applications from