Liebert PW011 User Manual

TABLE OF CONTENTS
1 Important Safety Instructions 7
2 Nomenclature and Components 13
2.1 Liebert PDX Model-number Nomenclature 14
2.2 Liebert PCW Model-number Nomenclature 15
2.3 Component Location 15
3 Pre-installation PreparationandGuidelines 17
3.1 Planning Dimensions 18
3.2 Considerations for Air Distribution 18
3.3 Connections and System Setup 19
3.4 Operating Conditions 19
3.4.1 Cooling, Humidification and Dehumidification 19
3.4.2 Heating 19
3.5 Shipping Dimensions andUnitWeights 20
4 Equipment Inspection and Handling 21
4.1 Packaging Material 21
4.2 Handling the Unit while Packaged 22
4.3 Unpacking the Unit 22
4.3.1 Removing the Unit from the Skid with a Forklift 23
4.3.2 Removing the Unit from the Skid Using Rigging 25
4.3.3 Moving the Unit with Piano Jacks 27
4.4 Placing the Unit on a Floor Stand 28
5 Piping and Refrigerant Requirements 29
5.1 Fluid Piping forAir-cooled, Water/Glycol-cooledandChilled-waterPipingApplications 30
5.1.1 Field-installed, Gravity-fed Drain Line Requirements 30
5.1.2 Water Supply-line Requirements for the Optional Humidifier 33
5.2 Refrigerant Piping and Charging 34
5.2.1 Refrigerant Piping Guidelines forAir-cooledSystems 35
5.2.2 Refrigerant Line Sizes and Equivalent Lengths 36
5.2.3 Refrigerant Charge Requirements for Air-cooled Systems 36
5.2.4 Evacuation, Leak-testing, and Charging Air-cooledSystems withTXV
andwithoutReceivers 39
5.2.5 Evacuation, Leak-testing, and Charging Air-cooled Systems withLiebertLee-Temp™
“Flooded-condenser” Head-pressureControlSystem 43
5.2.6 Evacuation, Leak-testing andChargingAir-cooled Systems
withEEVandUnheatedReceivers 45
5.2.7 Superheat and Refrigerant Charge Optimization 47
5.3 Water/Glycol and Chilled-water Loop Piping Guidelines 49
5.3.1 Leak Checking for Unit and Field-installed Piping 50
6 Electrical Connections 51
6.1 Wye- and Delta-connected Power Supply for PDX and PCW 52
6.2 Supply Temperature Sensor 54
Vertiv | Liebert® PDX™ and PCW™ Installer/User Guide | 3

Liebert PW011 Specifications

General

Brand	Liebert
Model	PW011
Category	Control Unit
Language	English