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