Liebert Challenger 3000 with iCOM

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Air-Cooled Models—Self-Contained CompressorFigure 16 General arrangement—Air-cooled models with digital scroll and fan speed controlCondenserCoil* Inverted trap ondischarge and liquid linesto extend above base ofcoil by a minimumof 7-1/2" (190mm)SchraderValveSchraderValveOptional Field-InstalledFusible Plug* For rises over25ft. (7.6m), trapevery 20ft. (6m) orat evenly spacedpointsEvaporatorCoilLiquid ReturnShutoff*ValveSolenoidValveSightGlassExpansionValveSensingBulbFilterDrierServiceValvesDigitalCompressorExternalEqualizersDigitalSolenoid ValveCheckValveHot GasDischarge* Trap at baseof risers longerthan 5ft. (1.5m)SINGLE CIRCUIT SHOWNFACTORY PIPINGFIELD PIPING* Components are not supplied by Liebert butare recommended for proper circuit operationand maintenance.DPN001726Rev. 230
Air-Cooled Models—Self-Contained Compressor3.5 Air-Cooled Condenser with Liebert Lee-Temp “Flooded Condenser” HeadPressure Control SystemThe Liebert Lee-Temp system consists of a modulating type head pressure control valve and insulatedreceivers with heater pads to ensure operation at ambient temperatures as low as -30°F (-34.4°C).The Liebert Lee-Temp system can be used with any compressor choice.Liebert Lee-Temp PipingA discharge line and a liquid line must be field-installed between the indoor unit and the outdoorcondenser. See Figures 17 and 18 for details.Liebert Lee-Temp Controlled Materials Supplied•Built-in, pre-wired condenser control box• Air-Cooled condenser• Piping access cover to be reinstalled when piping is complete (models with one to four fans only)• Bolts—four per leg (3/8" x 5/8")• Terminal block for two-wire, 24V interlock connection between unit and condenser• Condenser legs—four with 1-fan, six on two-, three- and six-fan models and eight on four- andeight-fan models• Bolts—six per receiver (3/8" x 1")• Liebert Lee-Temp system:• Insulated storage receiver• Head pressure control valve with integral check valve• Service valve• Pressure relief valve• Liquid level sight glass•Check valveNOTELiebert Lee-Temp heater pads require a separate, continuous electrical source. See nameplateon unit for proper voltage.Liebert Lee-Temp Leak Check and Evacuation ProcedureProper leak check and evacuation can be accomplished only with all system solenoid valves open andcheck valves accounted for.NOTESystems with scroll or digital scroll compressors include a factory-installed check valve and anadditional downstream Schrader valve with core in the compressor discharge line. Properevacuation of the condenser side of the compressor can be accomplished only using thedownstream Schrader valve. See piping schematic (Figure 18).1. If unit power is available, open the unit liquid line solenoid valves using the evacuation functionin the diagnostic section of the Liebert iCOM control. If unit power is not available, a fieldsupplied24VAC / 75VA power source must be directly connected to each of the unit solenoidvalves.2. Attach a jumper hose from the service valve fitting on the outlet of the receiver and the Schraderfitting on the discharge header of the condenser. Front-seat the service valve approximatelytwo (2) turns.3. For scroll and digital scroll compressors, connect refrigerant gauges to the suction rotalock valvesand discharge line Schrader valves (see Note above).4. Open the service valves and place a 150 PSIG (1034 kPa) of dry nitrogen with a tracer ofrefrigerant. Check system for leaks with a suitable leak detector.5. After completion of leak testing, release the test pressure (per local code) and pull an initial deepvacuum on the system with a suitable pump.31
Page 1: Precision CoolingFor Business-Criti
Page 5 and 6: 7.5 Centrifugal Air-Cooled Condensi
Page 7 and 8: IMPORTANT SAFETY INSTRUCTIONSSAVE T
Page 9 and 10: Introduction1.0 INTRODUCTION1.1 Sys
Page 11 and 12: Installation (Applicable to all Mod
Page 23 and 24: Figure 11 Piping connections for ch
Page 29 and 30: 3.0 AIR-COOLED MODELS—SELF-CONTAI
Page 31 and 32: Air-Cooled Models—Self-Contained
Page 33 and 34: Air-Cooled Models—Self-Contained
Page 35: Air-Cooled Models—Self-Contained
Page 39 and 40: Figure 17 General arrangement—Air
Page 41 and 42: 4.0 WATER-COOLED MODELS—SELF-CONT
Page 43 and 44: Figure 20 General arrangement diagr
Page 45 and 46: Water-Cooled Models—Self-Containe
Page 47 and 48: Glycol/GLYCOOL-Cooled Models—Self
Page 49 and 50: NOTICEGlycol/GLYCOOL-Cooled Models
Page 51 and 52: 5.5.2 Glycol SolutionsGlycol/GLYCOO
Page 57 and 58: Figure 27 General arrangement—GLY
Page 59 and 60: 5.5.4 Motor Ball Valve—Digital Sc
Page 61 and 62: Chilled Water ModelsFigure 30 Chill
Page 63 and 64: 7.2.2 Low VoltageSplit System Model
Page 65 and 66: Split System ModelsTable 24 Line co
Page 67 and 68: Table 26Horizontal air discharge ca
Page 69 and 70: Table 28Split System ModelsCabinet
Page 71 and 72: Split System Models7.5 Centrifugal
Page 73 and 74: Figure 36 3-ton centrifugal air-coo
Page 75 and 76: Split System ModelsFigure 38 5-ton
Page 77 and 78: Split System ModelsFigure 40 Split
Page 79 and 80: 7.6.4 Glycol SystemsSplit System Mo
Page 81 and 82: Split System ModelsFigure 43 5-ton
Page 83 and 84: R407C Refrigerant8.0 R407C REFRIGER
Page 85 and 86: R407C RefrigerantNOTES79
Page 88:
Ensuring The High AvailabilityOf Mi
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