DISCONTINUED - Liebert Deluxe System 3 Precision Cooling System, 21-105kW

Discontinued Products
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Liebert Deluxe System 3 Precision Cooling Systems, 21-105kW

Dual Circuit Precision Cooling for Sensitive Electronic Equipment

Liebert Deluxe System/3 precision cooling system provides precise, reliable control of room temperature, humidity and airflow for proper operation of critical electronic equipment. Redundant critical components, such as compressors, blowers and motors, contribute to system reliability.

The Liebert Deluxe System/3 is available in capacities ranging from 21-105kW (6-30 tons) in compressorized systems, or 35-228kW (10-65 tons) in Chilled Water Systems, in upflow and downflow configurations.

This is a discontinued product.

  • Precision cooling and humidity control
  • Provides component redundancy compressors, motors and blowers
  • Offers upflow and downflow models
  • Cools in air, water, glycol, Glycool, water configurations


  • Allows installation in upflow or downflow configuration, and in Air, Water, Glycol, GLYCOOLâ„¢ and Chilled Water models.
  • Provides a complete environmental control package, including both precision air conditioning and humidity control.
  • Offers two levels of microprocessor control systems.

Higher Availability

  • Features reliable refrigeration components, such as dual, semi-hermetic compressors and A-frame evaporator coils, all factory pre-piped, wired, and tested in a rugged, easy-access tubular-steel frame.
  • Provides redundancy with dual refrigeration circuits.

Lowest Total Cost Of Ownership

  • Delivers the highest levels of energy efficiency with the combination of high efficiency 4-step unloaded semi-hermetic compressors and options such as a variable-speed drive on the fan motor.
  • Offers ultra energy efficient GLYCOOL and Dual Cool hybrid models.

Ideally Suited For

  • Data centers
  • Telecommunications facilities
  • Industrial process control centers
  • Laboratories
  • Other sensitive electronic applications
Liebert AC4 and AC8
Autochangeover Controllers

  • Autochangeover for precision cooling units
  • Balances system runtime for even component wear
  • Controls up to 8 cooling systems

Liebert Liqui-tect
Two Channel Leak Detection System 

  • Two zone leak detection monitor
  • Monitors up to 5000 feet of leak detection cable in each zone
  • Measures and reports distance of leak from monitor
  • Monitors leaks below the floor, above the ceiling, or at the room perimeter

Liebert Nform Enterprise Edition
Centralized Monitoring Software 

  • Centralized monitoring and control of SNMP devices through existing NMS
  • Provides email alerts and local notifications
  • Allows user defined automated shutdown
  • Offers an ideal solution for large businesses

Liebert SiteScan Web
Centralized Monitoring and Control 

  • Centralized site monitoring
  • Provides real-time monitoring and control
  • Allows alarm/event management
  • Operates compatibly with existing Building Management Systems

Liebert SiteLink
Communication Interface 

  • Communication interface between Liebert units and existing BMS
  • Integrates 4 or 12 units into a single device
  • Communicates with Liebert SiteScan Web or Modbus

Liebert SiteLink-E
Communication Interface 

  • Communication interface between Liebert/Emerson protocols and existing BMS
  • Integrates 4 or 12 units into a single device
  • Supports Modbus or BACnet

Liebert IntelliSlot 485
Interface Card 

  • Liebert equipment interface card
  • Operates with industry standard "Open" protocol
  • Communicates with Liebert SiteScan Web software
  • Provides remote alarm notification
Brochures and Data Sheets
Case Studies
Parts Documentation
Technical Specifications
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