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Liebert DS Downflow Low Volt Section, Electrical Connections, A B C D, Overload Protectors

Models: DS

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Electrical Connections

Figure 55 Electrical field connections

2IntelliSlot Housing

A B

C D

OVERLOAD PROTECTORS

P64

P67

CONTACTORS

60Hz 12

			CONTACTORS & RELAYS
1	6	50 Hz	DOWNFLOW	3
1	6	50 Hz

DOWNFLOW LOW VOLT SECTION

Note: Typical orientation of components shown. Component location varies by option and unit size.

CAUTION:

UPFLOW

12 77

Risk of broken or shorted low volt wiring. Field-installed low volt wiring must be routed with loop as shown to allow electric box to swing.

37C 38C 37B 38B 37 38 24 50 51 55 56 70 71 72 73

Refer to 7.1 - Electrical Field Connection Descriptions for keys to numbered items.

Note: Refer to DPN000807 for descriptions of numbered callouts.

	POINT OF HINGED LOW
DPN000806	VOLT ELECTRIC BOX
DPN000806
Rev. 3	UPFLOW LOW VOLT SECTION

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Liebert DS user manual Downflow Low Volt Section, Electrical Connections, A B C D, Overload Protectors, Contactors

Contents

User Manual 28-105kW, 8-30 Tons, Upflow and Downflow, 50/60Hz Liebert DSFor Business-Critical Continuity Page SAFETY INFORMATION TABLE OF CONTENTS1.0 LIEBERT DS COMPONENTS AND NOMENCLATURE 2.0 COOLING CONFIGURATIONS 3.0 PRE-INSTALLATION GUIDELINES7.0 ELECTRICAL CONNECTIONS 12.0 MAINTENANCE8.0 PIPING 13.0 HVAC MAINTENANCE CHECKLIST FIGURES compressor models all compressor models TABLES Table 43 Component weights-upflow, air-cooled, 105kW 30 ton, scroll/digital scroll compressor models IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONSRisk of contact with hot surfaces. Can cause injury Risk of high-speed moving parts. Can cause injury or deathRisk of leaking water. Can cause equipment and building damage Figure 1 Downflow model component locations 1.0 LIEBERT DS COMPONENTS AND NOMENCLATUREFigure 2 Upflow model component locations Air Distribution Configuration5 A U A Liebert DS Components and NomenclatureGlycol-Cooled 2.0 COOLING CONFIGURATIONSCooling Configurations Air-Cooled3.1 Room Preparation 3.0 PRE-INSTALLATION GUIDELINES3.2 Air Distribution-Downflow Units 3.3 Air Distribution-Upflow Units Figure 5 Upflow ducting configurations3.5 Operating Conditions 3.4 Connections and System SetupUpflow Unit Weight, lb 4.0 LIEBERT DS DIMENSIONS AND WEIGHTSLiebert DS Dimensions and Weights Downflow Unit Weight, lbFront View Top ViewTop View Front View Top View2400 DPN000924 RevAir-Cooled 2350Front View Figure 10 Cabinet and floor planning dimensions-downflow, air-cooled, 53-77kW 15-22 ton, scroll compressor modelsFRONT VIEW TOP VIEWTop View Weights for downflow, air-Cooled, 105kW 30 ton, all compressor modelsFront View Top View Figure 13 Cabinet and floor planning dimensions-downflow, water/glycol/GLYCOOL, 105kW 30 ton, all compressor modelsFront View Top View Figure 14 Cabinet and floor planning dimensions-upflow, air-cooled 28-42kW 8-12 ton, semi-hermetic compressor modelsFront View Figure 15 Cabinet and floor planning dimensions-upflow, air-cooled 28-42kW 8-12 ton, scroll or digital scroll compressor models FRONT VIEW Front View Top View838mm Top View Figure 18 Cabinet and floor planning dimensions-upflow, air-cooled, 53-77kW 15-22 ton, scroll or digital scroll compressor modelsFront View Front View TOP VIEW Table 17 Weights-upflow, air-cooled, 105kW 30 ton, allLiebert DS Dimensions and Weights Dry Weight, Approximate, lb kgModel Liebert DS Dimensions and WeightsTOP VIEW FRONT VIEWHeight, in. mm Liebert DS Dimensions and WeightsDimensions, in. mm ModelHeight, in. mm Liebert DS Dimensions and WeightsDimensions, in. mm ModelD turning vane Figure 24 Floor stand dimensions-downflow, 105kW 30 ton modelsLiebert DS Dimensions and Weights Height, in. mmTop of Unit Figure 25 Blower outlet and deck dimensions-upflow, 28-42kW 8-12 tonTable 22 Dimensions for upflow, 28-42kW 8-12 ton Blower Outlet Location - Top ViewBlower outlet and deck dimensions-upflow, 53-77kW 15-22 ton Table 24 Blower outlet and deck dimensions-upflow 105kW 30ton Figure 27 Blower outlet and deck dimensions-upflow 105kW 30ton1-1/2 38mm Table 25 Rear return filter box dimensions Figure 28 Rear return filter box dimensionsDPN001196 Rev Side View - Unit Figure 29 Upflow unit plenum dimensionsTable 26 Upflow unit plenum dimensions Check One5.1 Packaging Material SAFETY INFORMATION5.0 EQUIPMENT INSPECTION AND HANDLING Jack ForkliftPallet Spreader Bars and SlingsFigure 32 Remove the unit from the skid 5.2.1 Removing the Unit from the Skid With a ForkliftFigure 33 Moving the unit to its installation location 5.2.2 Moving the Unit to the Installation Location with Piano Jacks5.2.3 Removing Piano Jacks Lifting 5.2.4 Removing Liebert DS from Skid Using RiggingSling Figure 35 Using rigging to lift Liebert DS off skidLifting Lifting5.4 Placing the Unit on a Floor Stand 5.3 Semi-Hermetic Compressor Spring Isolation SystemDETAIL A 6.1 Required Equipment 6.2 Disassembly-Downflow Units6.0 DISASSEMBLING THE LIEBERT DS FOR TRANSPORT 13. GLYCOOL/Dual-Cool-Optional Component 10. Reheat-Optional Component11. Humidifier-Optional Component 12. Condensate Pump-Optional ComponentEmerson does not recommend unsweating refrigerant connections 6.2.1 Remove the Compressor Assembly6.2.2 Remove the Filter and Electric Box Assembly Emerson recommends using piano jacks when moving this section6.3.1 Reconnecting Piping, Charging and Replacing Panels 6.3 Reassembly-Downflow Units6.4 Reassembly Checklist 60-3/16 Compressor AssemblyFilter & Electric Box Assembly Blower & Coil AssemblyFilter & Electric Box Assembly Figure 39 Component dimensions-downflow, water/glycol/GLYCOOL, 28-42kW 8-12 ton, all compressor models 59-7/16 1509mm 940mm 1509mmFigure 42 Component dimensions-downflow water/glycol, GLYCOOL, 53-77kW 15-22 ton, all compressor models Figure 43 Component dimensions-downflow, air-cooled, 105kW 30 ton, semi-hermetic compressor models See disassembly and handling instructions in installation manual Figure 45 Component dimensions-downflow, water/glycol/GLYCOOL, 105kW 30 ton, all compressor models Emerson does not recommend unsweating refrigerant connections 6.5 Disassembly-Upflow Units6.5.2 Remove Blower and Electric Box Assembly 6.5.1 Remove Compressor AssemblyEmerson recommends using piano jacks when moving this section 6.7 Reassembly Checklist 6.6 Reassembly-Upflow UnitFigure 46 Component dimensions-upflow, air-cooled, 28-42kW 8-12 ton, semi-hermetic compressor models Figure 47 Component dimensions-upflow, air-cooled, 28-42kW 8-12 ton, scroll/digital scroll compressor models Figure 48 Component dimensions-upflow, water/glycol/GLYCOOL, 28-42kW 8-12 ton, all compressor models 2083mm 660mm108 2743mm Assembled Length Figure 50 Component dimensions-upflow, air-cooled, 53-77kw 15-22 ton, scroll/digital scroll compressor models Figure 51 Component dimensions-upflow water/glycol/GLYCOOL 53-77kw 15-22 ton, all compressor models Figure 52 Component dimensions-upflow, air-cooled, 105kW 30 ton, semi-hermetic compressor models Figure 53 Component dimensions-upflow, air-cooled, 105kW 30 ton, scroll/digital scroll compressor models 31-1/4 794mm Electrical Connections 7.0 ELECTRICAL CONNECTIONSOVERLOAD PROTECTORS DOWNFLOW LOW VOLT SECTIONElectrical Connections A B C DStandard Electrical Connections 12. Factory installed disconnect switch13. Secondary disconnect switch and earth ground 7.1 Electrical Field Connection DescriptionsOptional Low Voltage Terminal Package Connections Gravity Drain 8.1.1 Condensate Piping-Field-Installed8.1 Fluid Connections 8.0 PIPINGDOWNFLOW DS UNIT CORRECTINCORRECT INCORRECT DPN0015568.1.2 Humidifier Supply Water-Optional Infrared 8.1.3 Requirements of Systems Using Water or GlycolGeneral Guidelines Leak Checking of Unit and Field Piping 8.2 Refrigeration Piping8.2.1 Piping Guidelines-Air-Cooled Units 11.7 Fan Speed Control Materials Supplied 8.3 Dehydration/Leak Test and Charging Procedures for R-407C and R-22Fan Speed Control Leak Check and Evacuation Procedure Fan Speed Control PipingFan Speed Charging Table 49 Fan speed suction pressure transducer settingsLee-Temp Piping Lee-Temp Leak Check and Evacuation ProcedureLee-Temp Controlled Materials Supplied Sight Glass Levels Table 50 Lee-Temp suction pressure transducer settingsLee-Temp Charging Lee-Temp Receiver Refrigerant LevelLiquid 9.0 PIPING SCHEMATICSValve Liquid Return Lee-TempLiquid Liquid ReturnLee-Temp Fan SpeedLiebert DS Unit Piping schematic-water/glycol, semi-hermetic compressor modelsrefer to 12.11.3 - Drycooler Settings For systems with drycoolersLIEBERT Figure 60 Piping schematic-water/glycol with scroll compressor modelsPiping Schematics For systems with drycoolers refer to 12.11.3 - Drycooler SettingsLIEBERT Figure 61 Piping schematic-GLYCOOL semi-hermetic compressor modelsPiping Schematics For systems with drycoolers refer to 12.11.3 - Drycooler SettingsLIEBERT Figure 62 Piping schematic-GLYCOOL with scroll compressor modelsPiping Schematics For systems with drycoolers refer to 12.11.3 - Drycooler SettingsHEAT REJECTION Piping SchematicsCUSTOMER HEAT REJECTION LIEBERTLIEBERT DS UNIT and associated piping Piping SchematicsLIEBERT HEAT REJECTIONDPN000805 Rev Figure 65 Optional piping schematic for Econ-O-CoilDPN000803 Front ViewSection A-A FRONT OF UNITNote Drawing not to scale E1 E2 Description Piping SchematicsConnection Size / Opening PointDescription Piping SchematicsConnection Size / Opening Point16-1/16 DPN000933408mm DPN001014 Rev HUM E1 E2 Front of UnitLV1 LV2 LV3 14-1/2 Description Piping SchematicsConnection Size / Opening PointPoint Piping SchematicsFRONT SECTION VIEW Connection Size / OpeningFront Section View Piping SchematicsLeft Side Section View Top View of UnitLeft Front Panel Not Shown Piping SchematicsTOP VIEW OF UNIT FRONT SECTION VIEW OF UNITPoint Piping SchematicsFront Section View Connection Size / OpeningLeft Side Section View Piping Schematics2. Tolerance on all piping dimensions is ±1/2 13mm Top ViewFRONT SECTION VIEW OF UNIT Piping SchematicsTOP VIEW OF UNIT LEFT SIDE SECTION VIEW OF UNITFigure 81 Primary connection locations-upflow, water/glycol/GLYCOOL, 105kW 30 ton, all 10.3 Piping 10.0 CHECKLIST FOR COMPLETED INSTALLATION10.1 Moving and Placing Equipment 10.2 ElectricalPage 11.2 Startup Checks Inspection With Panels Removed and Disconnect Off Return Completed Startup Form to Your Local Emerson Sales Office 11.3 Commissioning Procedure With Panels On12.1 Filters 12.0 MAINTENANCEDo Not Use 12.1.1 Filter Replacement Procedure-Downflow Units12.1.2 Filter Replacement Procedure-Upflow Units 12.2 Blower Drive System12.2.2 Belt Removal 12.2.1 Upflow Motor Access12.2.3 Belt Installation and Tensioning Figure 83 Upflow motor accessBlower Motor Blower Bearing MaintenanceBlower Bearing Replacement Blower Bearing Inspection12.3.1 Infrared Humidifier Correct Switch Orientation Incorrect Switch Orientation12.3.2 Cleaning Humidifier Pan and Float Switch 12.3 Humidifier12.4.2 Condensate Pump 12.4 Condensate Drain and Condensate Pump Systems12.3.3 Changing Humidifier Lamps 12.4.1 Condensate Drain12.7.1 Compressor Oil 12.5 Air-Cooled Condenser and Drycoolers12.6 Reheat-Electric Reheat Three-Stage and SCR 12.7 Compressor12.8.1 Compressor Motor Burnout 12.8 Compressor Replacement12.9 Facility Fluid and Piping Maintenance 12.8.3 Compressor Replacement Procedure12.11 Water/Glycol Control Valves 12.10.1 Cleaning InstructionsAdjustment-Johnson Controls/Penn Johnson Valves 12.10 Paradenser-Water-Cooled Condenser12.11.2Motor Ball Valve-Digital Scroll Compressors Testing Function of ValveAdjustment LocationTable 60 Aquastat settings-eight-fan drycoolers 12.11.3Drycooler SettingsTable 58 Aquastat settings-two-fan through four-fan drycoolers Table 59 Aquastat settings-six-fan drycoolersReheat 13.0 HVAC MAINTENANCE CHECKLISTFilters Blower SectionCompressor Section Condensate PumpRefrigeration Piping Water-Cooled CondensersGlycol Pump Air-Cooled Condenser / DrycoolerPage Of Mission-Critical Data And Applications Ensuring The High Availability

A B

OVERLOAD PROTECTORS

CONTACTORS

CONTACTORS & RELAYS

DOWNFLOW LOW VOLT SECTION

UPFLOW LOW VOLT SECTION