Emerson 3000 manual , , , 

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Data processing power is moving from the special- ized environment of the computer room to the office and the factory floor.

At the same time, the applications are growing expo- nentially. From yesterday’s spreadsheets and word processors, micro- to mid-range computers control LANs and WANs, manage complex telecommunica- tions systems, optimize manufacturing processes and facilitate sophisticated testing and laboratory func- tions.

Computers and sensitive electronics tend to be grouped, often in specialized rooms. This makes operation and service easier, but it also creates the need for precision environmental control—the coordi- nated management of temperature, humidity and air filtration.

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Challenger 3000 provides the precision and flexibil- ity required by a broad range of applications.

•Microprocessor-based controls (with a choice of monitoring systems based on your needs) allow you to select temperature and humidity ranges.

•A-frame coil (oriented to airflow) provides a large cooling surface area, and more precise control of temperature and humidity.

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Though electronic equipment rooms share some com- mon protection requirements, their application requirements can vary greatly. The room may or may not have a raised floor or an existing heat rejection loop. Budget and space requirements may limit the options a contractor has.

The Challenger 3000 is available in 10 different con- figurations, with upflow and downflow air distribu- tion options.

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The Challenger 3000 occupies 7 square feet

(.65 square meters) of floor space. It can be located in a corner of the room or against a wall, as all service access is from the front of the unit. With room floor space valued at a premium per square foot, the small footprint of the Challenger 3000 makes economic good sense.

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GLYCOOL is a patented Liebert process that can sig- nificantly reduce energy costs during periods of low outdoor ambient temperatures.

The GLYCOOL system is a normal glycol system with the addition of a second cooling coil in the air handling unit and a three-way valve. During colder months, the glycol solution returning from the out- door drycooler is routed to the second coil, and becomes the primary source of cooling for the room. At ambient temperatures below 35°F (1.6°C), the cooling capacity is sufficient to handle the total cool- ing needs of the room. As the compressor is responsi- ble for the majority of the power consumption of the air conditioning unit, a GLYCOOL system can sub- stantially reduce energy costs.

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