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

More documents

Recommendations

Info

Refrigeration Systems—Standard and Optional Features4.0 REFRIGERATION SYSTEMS—STANDARD AND OPTIONAL FEATURES4.1 Refrigeration System Components—Standard Features4.1.1 CompressorThe heart of the refrigeration system is the quiet, high-efficiency scroll compressor. The compressorshave internal vibration isolating mountings, pressure safety controls and built-in overload protection.4.1.2 Evaporator CoilThe evaporator coil is designed for the high sensible heat ratio required by electronic equipmentapplications. The copper tube, aluminum fin coils are configured as A-frame coils on downflow unitsand V-frame coils on upflow units for smooth air flow through the unit.4.1.3 Safety ControlEvery Liebert Challenger compressor has a high pressure switch with an exclusive manual reset afterhigh pressure cut-out. This prevents cycling the compressor at high pressure, resulting in greaterefficiency and longer compressor life.4.1.4 Expansion ValveThe externally equalized thermostatic expansion valve smoothly controls the flow of refrigerantthrough the coil and provides precise control of superheat.4.1.5 RefrigerantAll systems use R407C refrigerant in conjunction with POE oil.4.2 Refrigeration System Components—Optional Features4.2.1 Digital Scroll CompressorDigital scroll compressors are available only on self-contained models. This compressor type improvesefficiency by providing variable cooling capacity (20 - 100%) that can be adjusted to the cooling load.8
Air-Cooled System—Standard and Optional Features5.0 AIR-COOLED SYSTEM—STANDARD AND OPTIONAL FEATURES5.1 Air-Cooled, Self-Contained Systems—Standard Features5.1.1 Pump Down ControlThe compressor pump-down control is accomplished by a liquid-line solenoid valve used inconjunction with a low pressure switch.5.1.2 CondenserThe Liebert-manufactured low profile, direct drive propeller fan type air-cooled condenser providesquiet, efficient operation.It is constructed of aluminum with a copper tube and aluminum fin coil for corrosion resistance. Anintegral, factory-wired and tested control panel reduces installation time.5.2 Condenser Types5.2.1 Fan SpeedFan speed control utilizes a wave-chopper control to vary the air volume over the condenser coil,based on refrigerant head pressure. The fan motor next to the electrical panel is a single-phase,permanent split capacitor motor with motor speed adjusted in response to refrigerant pressure. Thebalance of fans on multi-fan units cycle on ambient thermostats. The control system providesrefrigerant head pressure control for outdoor ambients as low as -20°F (-28.9 °C).5.2.2 Variable Frequency DriveVFD condenser control system utilizes a variable frequency drive, inverter duty fan motor operatingfrom 0% to 100% motor RPM based on head pressure, sensed by refrigerant pressure transducers.VFD, ambient-temperature thermostat(s), motor overload protection and electrical control circuit arefactory-wired in the integral control panel. VFD controls the fan adjacent to the connection end of thecondenser and remains energized with active compressor operation. The balance of fans on multi-fanunits cycle on ambient thermostats. This system provides refrigerant head pressure control foroutdoor ambients as low as -20°F (-28.9°C).Surge Protection DeviceA surge protection device (SPD) is standard in the VFD condenser models only. Surge protection isnecessary because rooftop voltage supply often is not conditioned the same as the voltage supplyinside a data center. The SPD is designed to protect sensitive electronic condenser components fromhigh voltage transients, up to 25kVA/phase.An illuminated green LED indicates power supply is On and panel status is OK. An illuminated redLED indicates conditions require service and the SPD may require replacement to restore surgeprotection to the condenser.9
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 18: 5.2.3 Liebert Lee-Temp Refrigerant
Page 21 and 22: 6.3 Water/Glycol Split System—Sta
Page 23 and 24: GLYCOOL Systems—Standard and Opti
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
show all

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

Create successful ePaper yourself

Delete template?

Save as template?