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Vertiv Liebert DA250 User Manual

Vertiv Liebert DA250
91 pages
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Lieber
DSE ThermalManagementSystem
Installer/User Guide
Downflow, 250 kW (71 ton) and 265 kW (75 ton) Capacity, 50and60Hz

Table of Contents

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Vertiv Liebert DA250 Specifications

General IconGeneral
BrandVertiv
ModelLiebert DA250
CategoryIndustrial Equipment
LanguageEnglish

Summary

Important Safety Instructions

Electrical Safety Precautions

Warnings about arc flash, electric shock, and proper PPE.

System and Mechanical Safety

Warnings on system pressure, heavy parts, rotating blades, and handling.

Nomenclature and Components

Liebert DSE Model Number Nomenclature

Explanation of digits and their meaning in the DSE model number.

Component Location

Refers to submittal documents for component location drawings.

Pre-installation Preparation and Guidelines

Planning Dimensions

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

Connections and System Setup

Requirements for drain connections and system setup advice.

Operating Conditions

Recommended operating envelope and temperature/humidity limits.

Shipping Dimensions and Unit Weights

Provides shipping dimensions and weights for domestic and export packaging.

Equipment Inspection and Handling

Packaging Material

Information on the recyclability of packaging material.

Handling the Unit while Packaged

Guidelines for safely moving the unit using a forklift.

Unpacking the Unit

Instructions for removing exterior packaging material.

Removing the Unit from the Skid

Step-by-step guide to detach the unit from its shipping skid.

Unpacking and Handling the Fan Section

Refers to specific drawing for fan section handling instructions.

Electrical Field Connections

Standard Electrical Connections

Details on high/low voltage entrances, service, earth ground, and disconnect switch.

CANbus Electrical Connections

Information on CANbus connector and cable specifications for communication.

Optional Electrical Connections

Details on optional connections like condensate alarm, humidifier, and smoke alarms.

Optional Low Voltage Terminal Package Connections

Options for remote shutdown, common alarm, fan enable, and LiquiTect.

Optional Communication Connections

Information on U2U communication and Site/BMS connections.

Piping and Refrigerant Requirements

Drain Fluid Piping

Requirements for drain line connections, slope, and material.

Condensate Pump Drain Line Requirements

Guidelines for drain lines associated with an optional condensate pump.

Refrigerant Piping and Charging

Critical guidelines for refrigerant piping, pressure, and system charging, including guidelines, layout, sizes, charge, and evacuation.

Checklist for Completed Installation

Moving and Placing Equipment

Checks for unpacking, clearances, leveling, and fastener tightness.

Electrical Installation Checks

Verifies voltage, phase, wiring, breakers, grounding, and rotation.

Piping Installation Checks

Confirms loop completion, leak checks, oil addition, and drain line setup.

Other Installation Checks

Checks for ducting, filters, motor fasteners, water detection, and fan debris.

Initial Startup Checks and Commissioning Procedure for Warranty Inspection

Maintenance

Filters

Details filter quantity, type, and replacement procedure.

Fan Maintenance

Covers fan troubleshooting, impellers, motor lubrication, and removal.

Condensate System Maintenance

Maintenance tasks for condensate drains and pumps.

Electronic Expansion Valve (EEV) Maintenance

Procedures for EEV maintenance and superheat stability.

Compressor Maintenance

Covers oil, replacement, Rotalock valve, solenoids, and failure handling.

Evaporator Coil

Information on evaporator coil operation and temperature differences.

Air Cooled Condenser Maintenance

Guidelines for cleaning and maintaining the air-cooled condenser.

Preventive Maintenance Checklist

Evaporator/Filters

Checklist items for evaporator section and filters.

Blower Section (EC fan)

Checklist items for the blower section and EC fans.

Condensate Pump (if equipped)

Checklist items for the condensate pump system.

Electrical Panel

Checklist items for electrical panel components like fuses and contactors.

Controls

Checklist items for control system operations and connections.

Refrigeration Piping

Checklist items for refrigerant lines, moisture, and filter driers.

APPENDICES

Appendix A: Technical Support and Contacts

Vertiv support information and office locations in US, Europe, and Asia.

Appendix B: Submittal Drawings

List of submittal drawing document numbers and titles.

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