Liebert CR020 User Manual

Contents
Chapter 1 Preliminary Operations ....................................................................................................................................... 1
1.1 Inspection ............................................................................................................................................................. 1
1.2 Handling ................................................................................................................................................................ 1
1.3 Operating Limits .................................................................................................................................................... 2
1.4 Noise Level Limits ................................................................................................................................................. 4
1.5 Product Description ............................................................................................................................................... 4
Chapter 2 Unit Positioning ................................................................................................................................................... 8
Chapter 3 Unpacking And Installation ............................................................................................................................... 13
3.1 Reference Guide For Receiving, Unpacking, And Preparing For Installation ...................................................... 13
3.1.1 Equipment Inspection .............................................................................................................................. 13
3.1.2 Packing Material ...................................................................................................................................... 13
3.2 Recommended Unit Handling Equipment ........................................................................................................... 13
3.3 Handling The Unit While Packaged .................................................................................................................... 14
3.4 Unpacking The Unit ............................................................................................................................................ 14
3.5 Installation ........................................................................................................................................................... 16
Chapter 4 Refrigeration Connections ................................................................................................................................ 19
4.1 Refrigeration Pipeline Connections For Air-Cooled (A) Units .............................................................................. 19
4.1.1 General Layout ........................................................................................................................................ 19
4.1.2 Pipe Diameter And Thickness ................................................................................................................. 20
4.1.3 Installing Pipelines ................................................................................................................................... 21
4.2 Vacuum Creation And Refrigerant Charge ......................................................................................................... 22
4.2.1 R410A Precharge For Air-Cooled (A) Units ............................................................................................. 23
4.2.2 Refrigerant Charge For Air-Cooled (A) Units ........................................................................................... 24
4.3 Refrigeration Circuits .......................................................................................................................................... 24
Chapter 5 Water Connections ........................................................................................................................................... 25
5.1 General Warning ................................................................................................................................................. 25
5.2 Water Connections – Supply Humidifier And Drain Water (All Units) .................................................................. 26
5.3 Chilled Water Connections For Water/Glycol-Cooled (W) Units ......................................................................... 27
5.3.1 Notes For Open Circuit Applications ........................................................................................................ 27
5.3.2 Notes For Closed Circuit Applications ..................................................................................................... 27
5.4 Chilled Water Connections For Chilled Water (C) Units ...................................................................................... 28
Chapter 6 Electrical Connections ...................................................................................................................................... 30
6.1 Cable Entry Ports, Routing Cables And Connection Procedures ........................................................................ 30
6.2 Protective Features Of EC Fans ......................................................................................................................... 31
6.3 Protective Features Of Electrical Heaters ........................................................................................................... 32
6.4 Temperature Probes Placed On Racks .............................................................................................................. 32

Liebert CR020 Specifications

General

Brand	Liebert
Model	CR020
Category	Air Conditioner
Language	English