TABLE OF CONTENTS
1 Important Safety Instructions 1
2 Nomenclature and Components 5
2.1 Liebert DSE Packaged Solution Model Number Nomenclature 5
2.2 Component Location 7
2.3 Air Flow Configurations 8
3 Pre-installation PreparationandGuidelines 11
3.1 Storage before Installation 11
3.2 Rooftop Unit Installation Guidelines 12
3.2.1 Service Clearance for Rooftop Units 12
3.3 Planning Dimensions 13
3.4 Connections and System Setup 13
3.4.1 Electrical Connections 13
3.4.2 Evaporator Drip Pan Connection 13
3.5 Operating Conditions 15
3.5.1 Cooling 16
3.6 Unit Weights 16
4 Equipment Inspection and Handling 17
4.1 Rigging to Lift the Unit 17
5 Electrical Field Connections 21
6 Checklist for Completed Installation 29
6.1 Moving and Placing Equipment 29
6.2 Electrical Installation Checks 29
6.3 Other Installation Checks 29
6.4 BMS and Sensor Installation Checks 29
7 Initial Start-up Checks andCommissioningProcedure forWarrantyInspection 31
8 Maintenance 33
8.1 Service Access for Unit Maintenance 34
8.2 Filters 35
8.2.1 Replacing the Filters 36
8.3 Evaporator Fan Maintenance 37
8.3.1 Fan Assembly Troubleshooting 37
8.3.2 Fan Assembly Maintenance 38
8.3.3 Blower Motor Lubrication 38
8.3.4 Removing Fan Assembly 38
8.4 Electronic Expansion Valve (EEV) Maintenance 38
8.5 Compressor Maintenance 38
8.5.1 Compressor Oil 39
8.5.2 Replacement Compressors 39
8.5.3 Rotalock Valve on Digital-Scroll Compressors 39
8.5.4 Unloading Solenoids on a Digital Scroll Compressor 40
Vertiv | DSE Packaged Solution Installer/User Guide | i