Liebert DS
Page
 Table of Contents
 108
Maintenance
Electrical Connections
Piping
 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
 PRE-INSTALLATION Guidelines
Room Preparation
Air Distribution-Downflow Units
 Air Distribution-Upflow Units
Upflow ducting configurations
 Operating Conditions
Connections and System Setup
 028/035/042 053/070/077
Liebert DS Dimensions and Weights
Shipping dimensions-domestic and export, inches mm
Shipping weights-approximate, kg
 Model No 028, 035
Approximate
 Dry Weight, lb kg Approximate Model No 028, 035
Top View
Front View
 GLYCOOL/Dual-Cool
Dry Weight lb. kg Approximate
DPN000894
51mm
 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
 Dry Weight, lb kg approximate Compressor Type Model
Top View
Front 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
 Weights-upflow, air-cooled, 105kW 30 ton, all
Dry Weight, Approximate, lb kg
Model 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
 Liebert Floor Stand front discharge shown
Semi-Hermetic Compressor Spring Isolation System
Placing the Unit on a Floor Stand
Detail a
 Disassembly-Downflow Units
Required Equipment
Disassembling 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
 Filter and Electric Box Assembly
Blower & Coil Assembly
Semi-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
 Electrical Field Connection Descriptions
Standard Electrical Connections
Optional Electrical Connections
 Optional Low Voltage Terminal Package Connections
 Gravity Drain
Condensate Piping-Field-Installed
Fluid Connections
Piping
 Gravity drain for downflow and upflow units
Condensate Pump
 Requirements of Systems Using Water or Glycol
Humidifier Supply Water-Optional Infrared
General 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 Leak Check and Evacuation Procedure
Fan Speed Control Piping
Fan Speed Control Materials Supplied
 Fan Speed Charging
Fan speed suction pressure transducer settings
 Lee-Temp Leak Check and Evacuation Procedure
Lee-Temp Piping
Lee-Temp Controlled Materials Supplied
 Lee-Temp suction pressure transducer settings
Lee-Temp Charging
Lee-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
 Point Description In. mm
Left Side Section View
Top View of Unit
Front Section View
 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
 Other
Checklist for Completed Installation
Moving and Placing Equipment
Electrical
 108
 109
 Commissioning Procedure With Panels On
 Filter quantities, upflow units
Maintenance
Filters
Filter quantities, downflow units
 Filter Replacement Procedure-Downflow Units
Filter Replacement Procedure-Upflow Units
Blower Drive System
 Upflow Motor Access
Belt Installation and Tensioning
Belt Removal
 Blower Motor
Blower Bearing Maintenance
Blower Bearing Replacement
Blower Bearing Inspection
 Humidifier
Correct orientation of float switch
 Infrared Bulbs
Condensate Drain and Condensate Pump Systems
Changing Humidifier Lamps
Condensate Drain
 Air-Cooled Condenser and Drycoolers
Reheat-Electric Reheat Three-Stage and SCR
Compressor
 Facility Fluid and Piping Maintenance
Compressor Replacement
 Water/Glycol Control Valves
Cleaning Instructions
Adjustment-Johnson Controls/Penn Johnson Valves
Paradenser-Water-Cooled Condenser
 12.11.2Motor Ball Valve-Digital Scroll Compressors
Testing Function of Valve
Adjustment
Location
 Aquastat settings-eight-fan drycoolers
12.11.3Drycooler Settings
Aquastat settings-two-fan through four-fan drycoolers
Aquastat settings-six-fan drycoolers
 Hvac Maintenance Checklist
 Electrical Panel
Refrigeration Piping
Water-Cooled Condensers
Compressor Section
 Glycol Pump
Air-Cooled Condenser / Drycooler
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