Liebert Challenger 3000 with iCOM

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Air-Cooled Models—Self-Contained CompressorTable 6 Equivalent lengths (feet) for various pipe fittingsCopper PipeO.D. in.90 DegreeElbow Copper90 DegreeElbow Cast45 DegreeElbow Tee3.4 Fan Speed Control SystemsThe Variable Fan Speed Control systems (FSC & VFD) uses pressure-activated electronic fan speedcontrol systems and remotely located thermostat(s) to ensure operation at ambient temperatures aslow as 0°F (-18°C). For this ambient temperature range, the VFD Control Condenser must be usedwith digital scroll indoor units and can be used for energy savings with any Liebert Challenger 3000unit.Variable Fan Speed Control PipingGateValveGlobeValveAngleValve1/2 0.8 1.3 0.4 2.5 0.26 7.0 4.05/8 0.9 1.4 0.5 2.5 0.28 9.5 5.03/4 1.0 1.5 0.6 2.5 0.3 12.0 6.57/8 1.45 1.8 0.8 3.6 0.36 17.2 9.51-1/8 1.85 2.2 1.0 4.6 0.48 22.5 12.01-3/8 2.4 2.9 1.3 6.4 0.65 32.0 16.01-5/8 2.9 3.5 1.6 7.2 0.72 36.0 19.5Refrigerant trap = 4 times equivalent length of pipe per this table.Table 7ModelIndoor unit refrigerant charge lb (kg)R407CApproximate Chargelb (kg)42A/40A 0.9 (0.4)67A/65A 1.4 (0.6)Table 8O.D.Line charges - refrigerant per 100 ft. (30 m) of Type “L” copper tubeLiquid Linelb (kg)R407CHot Gas Linelb (kg)1/2" 7.3 (3.3) 1.3 (0.6)5/8" 11.7 (5.3) 2.1 (1.0)3/4" 16.6 (7.5) 3.0 (1.4)7/8" 24.4 (11.1) 4.4 (2.0)Table 9 Condenser refrigerant (per serial tag)R407CApproximate Chargelb (kg)LiebertModel Fan Speed Lee-Temp*083 5 (2.3) 26 (11.8)104 8 (3.6) 37 (16.8)165 15 (6.8) 50 (22.7)* Charge includes the receiver charge.A discharge line and a liquid line must be field-installed between the indoor unit and the outdoorcondenser. See Figures 15 and 16 for details.26
Air-Cooled Models—Self-Contained CompressorVariable Fan Speed Control Materials Supplied•Built-in, pre-wired condenser control box• Air-Cooled condenser• Piping access cover to be reinstalled when piping is complete• 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, 2-fan and 3-fan models; six with 4-fan modelsVariable Fan Speed Control 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 a scroll or digital scroll compressor include a factory-installed check valve andan additional 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 (Figures 15 and 16).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 (refer to the Liebert iCOM user manual,SL-18835). If unit power is not available, a field-supplied 24VAC / 75VA power source must bedirectly connected to each of the unit solenoid valves.2. For scroll and digital scroll compressors, connect refrigerant gauges to the suction rotalock valvesand discharge line Schrader valves (see Note above) on the compressor.3. 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.4. After completion of leak testing, release the test pressure (per local code) and pull an initial deepvacuum on the system with a suitable pump.5. After four hours, check the pressure readings and, if they have not changed, break vacuum withdry nitrogen. Pull a second and third vacuum to 250 microns or less. Recheck the pressure aftertwo hours. After completing this step, proceed to Variable Fan Speed Charging on page 28.27
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: Air-Cooled Models—Self-Contained
Page 35 and 36: Air-Cooled Models—Self-Contained
Page 37 and 38: 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
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R407C Refrigerant8.0 R407C REFRIGER
Page 85 and 86:
R407C RefrigerantNOTES79
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Ensuring The High AvailabilityOf Mi
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