Installation Operation Maintenance

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<strong>Installation</strong>Minimal installation watercontentThe water volume is an importantparameter because it allows astable chilled water temperatureand avoids short cycle operation ofthe compressors.Parameters which influence thewater temperature stability• Water loop volume• Load fluctuation• Number of capacity steps• Compressors rotation• Dead band• Minimum time between 2 startsof a compressorTable 9 gives the minimalinstallation water contentrecommended according to allthese parameters for both comfortand process cooling application.Water treatmentUntreated or insufficiently treatedwater, if used in this unit, maycause scale, slime or algae toaccumulate or cause erosion andcorrosion. As Trane does not knowthe components used in thehydraulic network and the quality ofthe water used, we recommend theservices of a qualified watertreatment specialist. The followingmaterials are used in Trane chillersheat exchangers:• Stainless steel plates AISI 316,1.4401 with copper brazing• Water piping: steel• Water connections: brassTrane will not accept any liability inregards of damage due to the useof untreated or improperly treatedwater or from the use of saline orbrackish water. If water treatment isrequired, contact your local Tranesales office.Table 9 - Minimal water contentProcess cooling ApplicationComfortApplication (1)4°C Dead band(2)3°C Dead band(3)CGWN - CCUN 205 300 l 1100 l 1700 lCGWN - CCUN 206 400 l 1500 l 2600 lCGWN - CCUN 207 500 l 1900 l 3500 lCGWN - CCUN 208 500 l 1800 l 3000 lCGWN - CCUN 209 500 l 1700 l 2700 lCGWN - CCUN 210 600 l 2100 l 3600 lCGWN - CCUN 211 600 l 2000 l 3300 l(1) Minimum water loop volume in order to prevent excessive compressor cycling(2) Minimum water loop volume to obtain maximum +/- 2°C chilled water temperature fluctuation vs. chilledwater set-point(3) Minimum water loop volume to obtain maximum +/- 1,5°C chilled water temperature fluctuation vs. chilledwater set-point14CG-SVX06A-E4
<strong>Installation</strong>Water connectionsBefore making any connections,make sure the labeling for enteringand leaving water corresponds tothe submittals. CGWN water-cooledchillers and CCUN condenserlessunits are available in severalversions:1) Evaporator side options• No hydraulic control• With pump contactors to controla remote pump (single or dual)• With pump integrated hydraulicmodule, single or dual pump,low or high pressure head2) Condenser side options• No hydraulic control• With pump contactors to controla remote pump (single or dual)• With pump integrated hydraulicmodule, consisting of two singlepumps in parallel to adjustcondenser waterflow as afunction of unit capacity, low orhigh pressure headTypical water circuits are given inFigures 3 to 6.Figure 3 - CGWN hydraulic flow chart - without hydraulic module1 2 33CW2433HW5 41. Insulated evaporator2. Valve for air vent3. ¼ SAE Male pressure tab4. ¼ SAE Male drain tab5. Condenser6. Water strainer7. Expansion Tank8. Pressure relief valve9. Single or double evaporator pump10. Drain pan11. Condenser pump12. Check valveCW: Chilled water loopHW: Condensation water loopTT: Temperature sensorPi: Pressure gaugeFT: Water flow switchA: For sizes 205 to 207 standard head 3"B: For sizes 208 to 211 and all sizes high 4"CG-SVX06A-E415
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 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 and 28: InstallationWhen ordered, the outdo
Page 29: InstallationOperating rangeCAUTION:
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

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