Vertiv Liebert CW - User Manual

Liebert®
CW™ ThermalManagementSystem
Installer/User Guide
305kW, 375kW, 415kW Capacity, 50/60Hz

Summary

Nomenclature and Components

Liebert CW Model-number Nomenclature

Details each digit of the configuration number for Liebert CW units and components.

Component Location

Describes unit component locations using submittal documents and relevant tables.

Pre-installation Preparation and Guidelines

Planning Dimensions

Details unit, floor stand, and plenum dimensions from submittal documents.

Connections and System Setup

Covers drain, water connections, and seismic requirements for unit setup.

Operating Conditions

Defines the recommended operating envelope for Liebert CW units.

Shipping Dimensions and Unit Weights

Provides domestic and export shipping dimensions and weights for units and fan sections.

Equipment Inspection and Handling

Handling the Unit while Packaged

Provides instructions for transporting the unit using forklifts, cranes, slings, and spreader bars.

Unpacking the Unit

Guides on removing domestic and export packaging from the unit.

Removing the Unit from the Skid

Details steps for detaching the unit from its skid using socket drivers and corner brackets.

Electrical Connections

Electrical Field-connection Drawings

Lists relevant documents for electrical field connections and unit-to-unit networking.

Piping Requirements

Drain Fluid Connections

Covers requirements for the unit's water drain connection and related pipe connections.

Field-installed, Gravity-fed Drain Line Requirements

Details requirements for installing and routing gravity-fed drain lines to prevent backups.

Condensate-pump Drain Line Requirements

Specifies requirements for drain lines when a condensate pump is used.

Chilled-water Loop Piping Guidelines

Provides guidelines for installing chilled-water loop piping, including fluid chemistry.

Leak Checking for Unit and Field-installed Piping

Explains procedures for checking fluid systems for leaks during installation.

Checklist for Completed Installation

Moving and Placing Equipment

Checks for proper unpacking, material verification, and secure placement of equipment.

Electrical Installation Checks

Verifies correct voltage, wiring, grounding, and blower rotation for electrical setup.

Piping Installation Checks

Confirms loop completion, leak checks, flushing, sizing, support, and drain connections.

Other Installation Checks

Checks ducting, filters, motor fasteners, and fan debris for installation completeness.

Initial Start-up Checks and Commissioning Procedure For Warranty Inspection

Maintenance

Filters

Covers filter installation and replacement, emphasizing Vertiv filters for performance.

Replacing the Filters

Details accessing and replacing air filters from the front side of the unit's fan plenum.

Fan Maintenance

Addresses fan assembly troubleshooting and safety precautions during maintenance.

Condensate-drain and Condensate-pump System Maintenance

Outlines maintenance for condensate drain and pump systems.

Preventive Maintenance Checklist

Evaporator;Filters Maintenance

Checklist items for evaporator and filter maintenance, including cleaning and replacement.

Blower Section Maintenance

Checklist items for blower section maintenance, including bearings, motors, and amp draw.

Condensate Pump Maintenance

Checklist items for condensate pump maintenance, focusing on sump, floats, and discharge valve.

Electrical Panel Maintenance

Checklist items for electrical panel maintenance, including fuses, contactors, and wire connections.

Appendices

Appendix A: Technical Support and Contacts

Provides contact information for Vertiv technical support and service in the United States.

Appendix B: Submittal Drawings

Lists submittal drawings organized by topic/application, including document numbers and titles.

Vertiv Liebert CW Specifications

General

Frequency	50/60 Hz
Communication Protocol	Modbus, BACnet
Humidity Range	20-80% RH (non-condensing)
Dimensions	Varies by model
Weight	Varies by model