Installation Operation Maintenance

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<strong>Installation</strong>The minimum required subcoolingat the remote condenser level wheninstalled below is defined in thefollowing table.Example : If the remote condenseris 10m below the CCUN and thecondensing temperature is 50°C, therefrigerant subcooling leaving theremote condenser shall not bebelow 4°C. To increase the amountof subcooling, more refrigerantcharge is required.Table 10 - Maximum elevation (H) of CCUN above RTCASubcooling°CCondensing dew temperature °C20°C 35°C 50°C 65°C4°C 4 m 6 m 8 m 10 m6°C 8 m 12 m 16 m 20 m8°C 12 m 17 m 23 m 30 m10°C 16 m 23 m 30 m 40 m12°C 20 m 28 m 38 m 49 mTable 11 - Recommended discharge line diameters for vertical risersUnit sizeLeaving chilled water temperature (°C)-12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14CCUN 205 7/8" 1"1/8 1"3/8CCUN 206 7/8" 1"1/8 1"3/8 1"5/8CCUN 207 1"1/8 1"3/8 1"5/8CCUN 208 1"1/8 1"3/8 1"5/8CCUN 209 1"1/8 1"3/8 1"5/8CCUN 210 1"1/8 1"3/8 1"5/8CCUN 211 1"1/8 1"3/8 1"5/8Table 12 - Recommended liquid line diameters (either horizontal or vertical)Unit sizeLeaving chilled water temperature (°C)-12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14CCUN 205 7/8" 1"1/8CCUN 206 7/8" 1"1/8CCUN 207 7/8" 1"1/8 1"3/8CCUN 208 7/8" 1"1/8 1"3/8CCUN 209 7/8" 1"1/8 1"3/8CCUN 210 1"1/8 1"3/8 1"5/8CCUN 211 1"1/8 1"3/8 1"5/822CG-SVX06A-E4
<strong>Installation</strong>InsulationInsulate refrigerant lines frombuilding itself to avoid transmissionto building structure of vibrationsnormally caused by pipework. Alsoavoid bypassing the unit's dampingsystem by fixing the refrigerantlines or the electrical ducts veryrigidly. Vibrations may propagateinto building structure throughrigidly fixed refrigerant lines.Pressure tests and leak detectionWarning : During operations, takethe following precaution:1. Neither oxygen nor acethyleneshould be used instead ofrefrigerant and nitrogen to detectleaks, otherwise a violentexplosion may occur.2. Always use valves andmanometers to check the testpressure in system. Excessivepressure may either cause pipesto rupture, damage unit, orcause an explosion, causingpossible physical injury. Carryout liquid line and hot gaspressure tests in accordancewith current standards.CAUTION: Do not go more than0.7 bar above the high pressureswitch setpoint. Introduce enoughrefrigerant into circuit for 85 to100 kPa pressure, pump-injectingdry nitrogen, and raise pressure to100 kPa. Search possible leaks usingdetector. This operation should becarried out great care throughoutthe system. If leaks are detected,reduce system pressure, and repairdefective component. Repeat testprocess, to check that the repair canwithstand rated pressure.Refrigerant chargeCCUN unit is delivered with arefrigerant holding charge andisolating valves. After systempressure and vacuum testing, fill upunit with refrigerant as indicated inTables 1-4. The refrigerantcomplement will be chargedaccording to the diameter and thelength of the refrigerant piping workup to obtain the correct subcoolingtemperature:∆t subcooling = 5°C for a liquidtemperature of 40°C.Oil charge - CCUNAbove 60 kg of refrigerant chargeper circuit, special care to the oillevel on compressor is required.The operating oil level shall remainabove half of the oil sight glass. SeeTable 1-4 for oil charges. The oillevel can only be evaluated after10 minutes OFF time of bothcompressors of the circuit. SeeFigure 18.Note: The oil quantity necessary forthe split system has also to beadjusted according to the diameterand the length of the refrigerantpiping work.CAUTION: Use exclusively POE oilrecommended by TRANEImportant note:These operations have to beperformed by a specialist. Theresults have to be written on a startup record by the Trane engineer orthe client's specialist who hasperformed this start up. The quantityof refrigerant and oil added are atthe client's charges.CG-SVX06A-E423
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 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

Installation Operation Maintenance

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