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