Installation Operation Maintenance

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<strong>Installation</strong>Interconnectionbetween CCUN andRemote CondenserThe CCUN has the capability tocontrol the fan staging of theremote condenser if the option istaken.Each refrigerant circuit can controlfrom one up to 6 fans per circuitusing a 4 output relays(10A/250VAC/AC1/SPDT) card optionprovided in the control box the ofCCUN. The external wiring to theremote condenser shall beconnected directly to the terminalblock for the optional fan relaycards.CAUTION:Power supply to the outdoor fanrelays shall not be provided fromthe CCUN unless special care to theVoltage and to the powerconsumption was evaluated.Table 14 - Control output relaysOutput relayQuantity of fansLow SpeedFan 1High SpeedFan 2 Fan 3 Fan 4 Fan 5 Fan 6Single speedFan option234561 2 3&4 Two fan speed first fan1 3&4 Single speed only fans1 2 3 4 Two fan speed first fan1 3 4 Single speed only fans1 2 3 4 4 Two fan speed first fan1 3 4 4 Single speed only fans1 2 3 3 4 4 Two fan speed first fan1 3 3 4 4 Single speed only fans1 2 3 3 4 4 4 Two fan speed first fan1 3 3 4 4 4 Single speed only fansTable 15 - Fan staging - Example : 4 fans per circuit, single speedStageNumber of FansStandard - 4 fans per circuitRelays Energized1 2 3 4Capacity [%]0 0 0 0 0 0 0.001 1 1 0 0 0 25.002 2 1 0 1 0 50.003 3 0 0 1 1 75.004 4 1 0 1 1 100.00Table 16 - Fan staging - Example : 4 fans per circuit with first fan 2-speedStageNumber of FansLow Ambient 2 Speed 4 fans per circuitRelays Energized1 2 3 4Capacity [%]0 0 0 0 0 0 0.001 0.5 1 0 0 0 12.502 1 0 0 1 0 25.003 1.5 1 0 1 0 37.504 2 0 0 0 1 50.005 2.5 1 0 0 1 62.506 3 0 0 1 1 75.007 3.5 1 0 1 1 87.508 4 0 1 1 1 100.0028CG-SVX06A-E4
<strong>Installation</strong>Operating rangeCAUTION: Maximum operating timefor low condensing water outlet is1 minute. The compressor shallbecome noisy.The envelope represents theoperating range in which the unitwill work without control limitation.To keep the unit operating in thisenvelope, be careful to adjustsetpoints inside with a clearanceequal to half the dead band. Checkalso compressor suction superheatfor being close to 5 or 6°C for lowchilled leaving water temperature tominimize compressor dischargetemperature. For very high leavingcondensing water temperatureabove 55°C, the refrigerant chargecan be minimized by 20%.Figure 17 - CGWN operating limitsCLWT : Condenser Leaving Water TemperatureELWT : Evaporator Leaving Water TemperatureCG-SVX06A-E429
Page 1 and 2: InstallationOperationMaintenanceInd
Page 3: ContentsGeneral informationForeword
Page 6 and 7: General DataTable 3 - Water cooled
Page 8 and 9: General DataTable 5 - Evaporator hy
Page 10 and 11: InstallationUnit nameplateThe unit
Page 12 and 13: InstallationFigure 2 - Rigging the
Page 14 and 15: InstallationMinimal installation wa
Page 16 and 17: InstallationFigure 4 - CCUN hydraul
Page 18 and 19: InstallationFigure 6 - CCUN hydraul
Page 20 and 21: Installation1. Pressure gauges: sho
Page 22 and 23: InstallationThe minimum required su
Page 24 and 25: InstallationPressure relief valve -
Page 27: InstallationWhen ordered, the outdo
Page 32 and 33: General Start-upStart-upFollow the
Page 34 and 35: General Start-upCAUTION:For the war
Page 36 and 37: General Start-upFigure 23 - High ef
Page 38 and 39: General Start-upFigure 27 - Evapora
Page 40 and 41: General Start-upFigure 31 - Evapora
Page 42 and 43: General Start-upFigure 35 - Condens
Page 44 and 45: General Start-upThe correction fact
Page 46 and 47: OperationControl and unit operation
Page 48 and 49: MaintenanceAnnual preventive visit
Page 50 and 51: MaintenanceF) Compressor noisyCompr
Page 52: Literature Order Number CG-SVX06A-E

Installation Operation Maintenance

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