Liebert® Challenger™ 3000 with Liebert iCOM® - Emerson Network ...

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Water/Glycol-Cooled Systems—Standard and Optional Features6.6 Glycol-Cooled Systems—Optional Heat Rejection Devices for Self-Contained andSplit Systems6.6.1 Dual Pump PackageThe dual pump package features two full size glycol pumps, each capable of providing sufficient flowfor system operation. A flow switch will sense the loss of flow, should the lead pump fail, andautomatically command the standby pump to start. The complete system includes dual pumphousing, pumps, lead-lag switch and flow switch (for field installation). The dual pump packageprovides redundancy, protecting against costly downtime in the computer room.6.6.2 Liebert Quiet-Line DrycoolersLiebert Quiet-Line Drycoolers can help your facility meet the strictest noise codes, and do so at lesscost than traditional drycoolers with acoustical shielding.14
GLYCOOL Systems—Standard and Optional Features7.0 GLYCOOL SYSTEMS—STANDARD AND OPTIONAL FEATURESThe Liebert GLYCOOL free-cooling system is integrated with a glycol-cooled LiebertChallenger 3000.The GLYCOOL system is a normal glycol system with the addition of a second cooling coil in the airhandling unit and a three-way valve. During colder months, the glycol solution returning from theoutdoor drycooler is routed to the second coil, and becomes the primary source of cooling for the room.At drycooler fluid temperatures, about 8°F (4.4°C) below room return temperature, cooling begins inthe second coil. As fluid temperatures drop, compressor operation stops, and the total cooling needs ofthe room are maintained by the second coil (Econ-O-Coil).The GLYCOOL system contains all the standard features of a glycol-cooled system plus the following.7.1 GLYCOOL Self-Contained Systems—Standard Features7.1.1 Comparative Temperature MonitorA solid-state temperature monitor compares the room air temperature and entering glycoltemperature. When air temperature is higher than glycol temperature, the monitor communicates tothe Liebert iCOM that “free-cooling” is available.7.1.2 GLYCOOL CoilThe GLYCOOL coil is strategically located in the return air stream of the environmental controlsystem. This coil is designed for closed-loop applications using properly treated glycol solutions.The air is first filtered before entering the coil and then is either precooled or totally cooled beforeentering the refrigeration coil. The glycol flow to the coil is controlled by a pre-piped modulatingthree-way valve. When supplied with a sufficiently cooled glycol solution, the coil provides the samecooling capacity as is obtained during the refrigeration cycle of the compressor.7.1.3 GLYCOOL Three-Way Control ValveThe GLYCOOL Three-Way Control Valve opens full anytime the temperature of the glycol solution isbelow room temperature, to take full advantage of all possible free-cooling. As the outdoor ambientdrops, the three-way control valve modulates the flow to the GLYCOOL coil. It maintains constanttemperature in the room and includes operating linkage and electronic motor. Unlike other valves ofthis nature, there is no over travel linkage or end switches to be adjusted. Standard design pressure is150psi (1034kPa).7.1.4 Glycol-Regulating ValveA head pressure operated three-way glycol regulating valve accurately controls the condensingtemperature and system capacity for various entering glycol temperatures. The valve has three-wayaction.15
Page 1: Precision CoolingFor Business-Criti
Page 6: 18.0 DIMENSIONAL DRAWINGS . . . . .
Page 10 and 11: Precision Environmental Control for
Page 12 and 13: Standard Features—All Systems2.0
Page 14 and 15: Chilled Water System—Standard & O
Page 16 and 17: Refrigeration Systems—Standard an
Page 18: 5.2.3 Liebert Lee-Temp Refrigerant
Page 21: 6.3 Water/Glycol Split System—Sta
Page 25 and 26: 7.3 GLYCOOL Self-Contained Systems
Page 27 and 28: Optional Equipment—All Systems8.7
Page 29 and 30: 9.2.3 Leak-Detection SolutionsCompr
Page 31 and 32: Table 2System TypeLiebert Challenge
Page 33 and 34: Table 3Air-cooled data—50Hz (cont
Page 35 and 36: Table 4System TypeInfrared Humidifi
Page 43 and 44: Chilled Water Data—50Hz17.0 CHILL
Page 45 and 46: Dimensional DrawingsFigure 14Cabine
Page 47 and 48: Dimensional DrawingsFigure 16Cabine
Page 49 and 50: CDimensional DrawingsFigure 19Cabin
Page 51 and 52: Dimensional DrawingsFigure 22 Conde
Page 53 and 54: Electrical Data—60HzTable 11 Self
Page 55 and 56: Electrical Data—60HzTable 13 Outd
Page 57 and 58: Electrical Data—60HzTable 20 Dryc
Page 59 and 60: Electrical Data—50HzTable 24Self-
Page 61 and 62: Electrical Data—50HzTable 34 Dryc
Page 63 and 64: 2.1.3 FilterGuide Specifications—
Page 65 and 66: Guide Specifications—Nominal 3 or
Page 67 and 68: 2.1.18 Condensate Pump (Optional)Gu
Page 69 and 70: 2.3.5 Liebert Quiet-Line Condensers
Page 71 and 72: Guide Specifications—Nominal 3 or
Page 73 and 74:
2.4.2 Water- or Glycol-Cooled Split
Page 75 and 76:
2.7 Comprehensive Monitoring Soluti
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Liebert® Challenger™ 3000 with Liebert iCOM® - Emerson Network ...

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