Liebert DS | Liebert instruction

Precision Cooling

For Business-Critical Continuity™

Liebert® DS™

User Manual

28-105kW,8-30 Tons, Upflow and Downflow, 50/60Hz

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Liebert user manual Liebert DS

Contents

Liebert DS Page Table of Contents Electrical Connections MaintenancePiping 108 Compressor Replacement Hvac Maintenance Checklist Figures Page Page Tables Viii Important Safety Instructions Page Downflow model component locations Liebert DS Components and Nomenclature Upflow model component locations = Dual-Cooling Water/Glycol Three-stage Compressor U a Glycool Cooling Configurations Room Preparation PRE-INSTALLATION GuidelinesAir Distribution-Downflow Units Air Distribution-Upflow Units Upflow ducting configurations Operating Conditions Connections and System Setup Shipping dimensions-domestic and export, inches mm Liebert DS Dimensions and WeightsShipping weights-approximate, kg 028/035/042 053/070/077 Model No 028, 035 Approximate Top View Dry Weight, lb kg Approximate Model No 028, 035Front View DPN000894 Dry Weight lb. kg Approximate51mm GLYCOOL/Dual-Cool Front View Dry Weight, lb kg Approximate Model 053 070 077 070 077 Dry Weight, lb kg Approximate Model No TOP View Compressor Dry Weight, lb kg, Approximate Type Model 053 Top View Dry Weight, lb kg approximate Compressor Type ModelFront View Dry Weight, lb kg approximate Compressor Type Model 105 Dry Weight, lb kg Model No 028-042 Compressor Type Model Dry Weight, lb kg approximate Alternate Refrigerant Piping Entrance Model No 053, 070 Top View Dry Weight, Approximate, lb kg Weights-upflow, air-cooled, 105kW 30 ton, allModel 105 Compressor GLYCOOL/Dual-Cool Height, in. mm Turning Vane Dimensions, in. mm Model Floor stand dimensions-downflow, 53-77kW 15-22 ton models Floor stand dimensions-downflow, 105kW 30 ton models Models Blower Supply Dimensions for upflow, 28-42kW 8-12 ton Dimensions, in. mm Models Blower Supply Blower outlet and deck dimensions-upflow, 53-77kW 15-22 ton Dimensions, in. mm Models Blower Blower outlet and deck dimensions-upflow 105kW 30ton Dimensions, in mm Compressor Type # Filters Rear return filter box dimensions Left Side Views Right Side Views Check One Equipment Inspection and Handling Packaging Material Step 181659P1 Rev Unpacking the Unit Step Removing the Unit from the Skid With a Forklift Removing Piano Jacks Moving the unit to its installation location Rev Removing Liebert DS from Skid Using Rigging Lifting Sling Equal Equal Distance Distance Placing the Unit on a Floor Stand Semi-Hermetic Compressor Spring Isolation SystemDetail a Liebert Floor Stand front discharge shown Required Equipment Disassembly-Downflow UnitsDisassembling the Liebert DS for Transport Reheat-Optional Component Remove the Filter and Electric Box Assembly Remove the Compressor Assembly Reconnecting Piping, Charging and Replacing Panels Reassembly-Downflow Units Reassembly Checklist Filter & Electric Box Assembly Filter & Electric Box Assembly 940mm 1930mm Assembly Assembled Height 1930mm 59-7/16 Blower & Coil Assembly Filter and Electric Box AssemblySemi-Hermetic Compressor Scroll Compressor Component Air Cooled Dual Cool Dry Weight, lb kg Approximate Includes Panels Filter & Electric 1510mm Disassembly-Upflow Units Remove Blower and Electric Box Assembly Remove Compressor 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 Standard Electrical Connections Electrical Field Connection DescriptionsOptional Electrical Connections Optional Low Voltage Terminal Package Connections Fluid Connections Condensate Piping-Field-InstalledPiping Gravity Drain Gravity drain for downflow and upflow units Condensate Pump Humidifier Supply Water-Optional Infrared Requirements of Systems Using Water or GlycolGeneral Guidelines Leak Checking of Unit and Field Piping Refrigeration Piping Recommended refrigerant line sizes OD copper inches Piping Guidelines-Air-Cooled Units Fan Lee-Temp Model Speed Includes receiver Liquid Line, lb kg Fan Speed Control Piping Fan Speed Control Leak Check and Evacuation ProcedureFan Speed Control Materials Supplied Fan Speed Charging Fan speed suction pressure transducer settings Lee-Temp Piping Lee-Temp Leak Check and Evacuation ProcedureLee-Temp Controlled Materials Supplied Lee-Temp Charging Lee-Temp suction pressure transducer settingsLee-Temp Receiver Refrigerant Level Piping schematic-air-cooled, semi-hermetic compressor models Piping Schematics Fan Speed Lee-Temp Liebert DS Unit Customer Heat Rejection Liebert Associated piping Piping schematic-GLYCOOL semi-hermetic compressor models Liebert Customer Heat Rejection Glycool with digital scroll compressor models DPN000805 Rev Optional piping schematic for Econ-O-Coil Point Description Inches mm Connection Size / Opening DPN000804 Front of Unit 53kW 15ton / 70 & 77kW 20 & 22ton DPN000929 Rev DPN000933 HUM E1 E2 Front of Unit DPN001015 CGD TOP View Top View of Unit Left Side Section ViewFront Section View Point Description In. mm 53kW 15 ton/70 & 77kW 20 & 22 ton Left Side Section View of Unit 53kW 15 tons/70 & 77kW 20 & 22 ton Left Side Section View Front Section View Left Side Section View Point Description Connection Size / Opening Piping data-upflow, air-cooled 105kW 30 ton, all Point Description Inches mm Opening, inches mm Connection Size Moving and Placing Equipment Checklist for Completed InstallationElectrical Other 108 109 Commissioning Procedure With Panels On Filters MaintenanceFilter quantities, downflow units Filter quantities, upflow units Filter Replacement Procedure-Upflow Units Filter Replacement Procedure-Downflow UnitsBlower Drive System Belt Installation and Tensioning Upflow Motor AccessBelt Removal Blower Bearing Replacement Blower Bearing MaintenanceBlower Bearing Inspection Blower Motor Humidifier Correct orientation of float switch Changing Humidifier Lamps Condensate Drain and Condensate Pump SystemsCondensate Drain Infrared Bulbs Reheat-Electric Reheat Three-Stage and SCR Air-Cooled Condenser and DrycoolersCompressor Facility Fluid and Piping Maintenance Compressor Replacement Adjustment-Johnson Controls/Penn Johnson Valves Cleaning InstructionsParadenser-Water-Cooled Condenser Water/Glycol Control Valves Adjustment Testing Function of ValveLocation 12.11.2Motor Ball Valve-Digital Scroll Compressors Aquastat settings-two-fan through four-fan drycoolers 12.11.3Drycooler SettingsAquastat settings-six-fan drycoolers Aquastat settings-eight-fan drycoolers Hvac Maintenance Checklist Water-Cooled Condensers Refrigeration PipingCompressor Section Electrical Panel Glycol Pump Air-Cooled Condenser / DrycoolerPage Iti Ne tTi n That