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Chillers30HXC 080-375Original instructionsNominal

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INSTALLATION, OPERATION ANDMAINTENANCE INSTRUCTIONSScrew Compressor Water-Cooled Liquid Chillers30HXC 080-375Original instructionsNominal cooling capacity 30HXC: 286-1300 kW 50 Hz / 60Hz2CONTENTS1 - INTRODUCTION ...............................................................yorkpa.jpg......................................................................................................41.1 - Installation safety considerations ........................................................................................................................................... 41.2 - Equipment and components under pressure......................................................................................................................... 51.3 - Maintenance safety considerations......................................................................................................................................... 51.4 - Repair safety considerations ................................................................................................................................................... 72 - PRELIMINARY CHECKS ...................................................................................................................................................... 82.1 - Check equipment received...................................................................................................................................................... 82.2 - Moving and siting the unit.......................................................................................................................................................93 - DIMENSIONS, CLEARANCES, WEIGHT DISTRIBUTION ....................................................................................... 103.1 - 30HXC 080-190.......................................................................................................................................................................103.2 - 30HXC 200-375 ......................................................................................................................................................................113.3 - Multiple chiller installation...................................................................................................................................................124 - PHYSICAL AND ELECTRICAL DATA - STANDARD 50HZ APPLICATION....................................................... 134.1 - Physical data 30HXC .............................................................................................................................................................134.2 - Electrical data 30HXC........................................................................................................................................................... 144.3 - Compressor electrical data 30HXC...................................................................................................................................... 154.4 - Electrical data for 30HXC units with high condensing temperatures (option 150/150A)............................................. 154.5 - Compressor electrical data 30HXC + option 150/150A..................................................................................................... 165 - PHYSICAL AND ELECTRICAL DATA - OPTIONAL 60HZ APPLICATION (OPTION 60/61) ......................... 175.1 - Physical data - 30HXC + option 60 (460V-3ph-60Hz)....................................................................................................... 175.2 - Electrical data - 30HXC + option 60.................................................................................................................................... 185.3 - Electrical data - 30HXC + option 60 with high condensing temperature (options 150/150A)..................................... 195.4 - Physical data - 30HXC + option 61 (380V-3ph-60Hz)....................................................................................................... 205.5 - Electrical data - 30HXC + option 61.................................................................................................................................... 215.6 - Electrical data - 30HXC + option 61 with high condensing temperature (options 150/150A)..................................... 225.7 - Compressor electrical data - 30HXC + option 60/61 ......................................................................................................... 225.8 - Compressor electrical data - 30HXC + option 60/61 + option 150/150A ........................................................................ 236 - UNIT CHARACTERISTICS FOR 30HXC UNITS WITH VERY LOW TEMPERATURE OPTION(OPTION 6 - OUT OF CE MARKING)..............................................................................................................................236.1 - Options and accessories.........................................................................................................................................................236.2 - Operating range, 30HXC units with very low temperature option .................................................................................. 236.3 - Evaporator water flow (l/s) for 35% ethylene glycol.........................................................................................................246.4 - Evaporator pressure drop curve, units for very low temperature..................................................................................... 257 - APPLICATION DATA...........................................................................................................................................................267.1 - Unit operating range...............................................................................................................................................................267.2 - Minimum chilled water flow ..................................................................................................................................................267.3 - Maximum chilled water flow..................................................................................................................................................267.4 - Variable flow evaporator........................................................................................................................................................277.5 - System minimum water volume ............................................................................................................................................277.6 - Cooler flow rate (l/s)............................................................................................................................................................... 277.7 - Condenser flow rate (l/s)........................................................................................................................................................ 277.8 - Evaporator pressure drop curve............................................................................................................................................ 287.9 - Condenser pressure drop curve............................................................................................................................................. 288 - ELECTRICAL CONNECTION............................................................................................................................................ 298.1 - Electrical connections 30HXC units.................................................................................................................................... 298.2 - Power supply...........................................................................................................................................................................308.3 - Voltage phase imbalance (%)...............................................................................................................................................308.4 - Recommended wire sections................................................................................................................................................. 313The cover illustrations are for illustrative purposes only and are not part of any offer for sale or contract.9 - WATER CONNECTIONS...................................................................................................................................................... 369.1 - Operating precautions ...........................................................................................................................................................369.2 - Water connections.................................................................................................................................................................. 369.3 - Flow control ............................................................................................................................................................................ 379.4 - Evaporator and condenser for the 30HXC water box bolt tightening ............................................................................ 389.5 - Frost protection ......................................................................................................................................................................389.6 - Operation of two units in master/slave mode ..................................................................................................................... 3810 - MAJOR SYSTEM COMPONENTS AND OPERATION DATA................................................................................. 3910.1 - Geared twin screw compressor........................................................................................................................................... 3910.2 - Pressure vessels.....................................................................................................................................................................3910.3 - Electronic expansion device (EXV) .................................................................................................................................. 4010.4 - Economizer...........................................................................................................................................................................4010.5 - Oil pumps..............................................................................................................................................................................4010.6 - Motor cooling valves............................................................................................................................................................ 4011 - MAIN OPTIONS AND ACCESSORIES........................................................................................................................... 4111.1 - Compressor suction valves (option 92).............................................................................................................................. 4211.2 - Electric protection level of the 30HXC control boxes to IP44C (option 20)............................................................... 4211.3 - Tropicalised control box for 30HXC units (option 22)..................................................................................................... 4211.4 - Disassembled 30HXC units (option 51) ............................................................................................................................ 4211.5 - Brine units for low-temperature evaporator leaving applications (option 5)................................................................ 4212 - MAINTENANCE...................................................................................................................................................................4212.1 - Maintenance instructions....................................................................................................................................................4212.2 - Soldering and welding..........................................................................................................................................................4212.3 - Refrigerant charging - adding charge................................................................................................................................. 4212.4 - Indication of low charge on a 30HXC system................................................................................................................... 4312.5 - Electrical maintenance ........................................................................................................................................................4312.6 - Pressure transducers ............................................................................................................................................................ 4312.7 - Oil charging - low oil recharging ........................................................................................................................................ 4312.8 - Integral oil filter change.......................................................................................................................................................4412.9 - Filter change-out schedule .................................................................................................................................................. 4412.10 - Filter change-out procedure.............................................................................................................................................. 4412.11 - Compressor replacement................................................................................................................................................... 4412.12 - Corrosion control ............................................................................................................................................................... 4513 - START-UP CHECKLIST FOR 30HXC LIQUID CHILLERS (USE FOR JOB FILE)............................................ 4641 - INTRODUCTIONPrior to the initial start-up of the 30HXC units, the people involvedin the on-site installation, start-up, operation and maintenance ofthis unit should be thoroughly familiar with these instructions andthe specific project data for the installation site.The 30HXC liquid chillers are designed to provide a very highlevel of safety during installation, start-up, opera tion andmaintenance. They will provide safe and reliable service whenoperated within their application range.This manual provides the necessary information to familiarizeyourself with the control system before performing start-upprocedures. The procedures in this manual are arranged in thesequence required for machine installation, start-up, operationand maintenance.Be sure you understand and follow the procedures and safetyprecautions contained in the instructions supplied with themachine, as well as those listed in this guide.To find out, if these products comply with European directives(machine safety, low voltage, electromagnetic compatibility,equipment under pressure etc.) check the declarations ofconformity for these products.1.1 - Installation safety considerationsAccess to the unit must be reserved to authorised personnel,qualified and trained in monitoring and maintenance. The accesslimitation device must be installed by the customer (e.g. cut-off,enclosure).After the unit has been received, when it is ready to be installedor reinstalled, and before it is started up, it must be inspected fordamage. Check that the refrigerant circuit(s) is (are) intact,especially that no components or pipes have shifted (e.g. followinga shock). If in doubt, carry out a leak tightness check and verifywith the manufacturer that the circuit integrity has not beenimpaired. If damage is detected upon receipt, immediately file aclaim with the shipping company.Carrier strongly recommends employing a specialised companyto unload the machine.It is compulsory to wear personal protection equipment.Do not remove the skid or the packaging until the unit is in itsfinal position. These units can be moved with a fork lift truck,as long as the forks are positioned in the right place and directionon the unit.The units can also be lifted with slings, using only the designatedlifting points marked on the unit.Use slings or lifting beams with the correct capacity, and alwaysfollow the lifting instructions on the certified drawings suppliedwith the unit. Do not tilt the unit more than 15°.Safety is only guaranteed, if these instructions are carefullyfollowed. If this is not the case, there is a risk of materialdeterioration and injuries to personnel.Never cover any protection devices.This applies to the relief valves (if used) in the refrigerant orheat transfer medium circuits, the fuse plugs and the pressureswitches.Ensure that the valves are correctly installed, before operatingthe unit.Classification and controlIn accordance with the Pressure Equipment Directive andnational usage monitoring regulations in the European Unionthe protection devices for these machines are classified as follows:Safetyaccessory*Damage limitation accessory**in case of an external fireRefrigerant sideHigh-pressure switch xExternal relief valve*** xRupture disk xFuse plug xHeat transfer fluid sideExternal relief valve **** ***** Classified for protection in normal service situations.** Classified for protection in abnormal service situations.*** The instantaneous over-pressure limited to 10% of the operating pressuredoes not apply to this abnormal service situation.The control pressure can behigher than the service pressure. In this case either the design temperature orthe high-pressure switch ensures that the service pressure is not exceeded innormal service situations.**** The classification of these relief valves must be made by the personnel thatcompletes the whole hydronic installation.If the relief valves are installed on a change-over valve, this isequipped with a relief valve on each of the two outlets. Only oneof the two relief valves is in operation, the other one is isolated.Never leave the change-over valve in the intermediate position,i.e. with both ways open (bring the actuator in abutment, frontor back according to the outlet to isolate). If a relief valve isremoved for checking or replacement please ensure that thereis always an active relief valve on each of the change-over valvesinstalled in the unit.All factory-installed relief valves are lead-sealed to prevent anycalibration change.The external relief valves and the fuses are designed and installedto ensure damage limitation in case of a fire.In accordance with the regulations applied for the design, theEuropean directive on equipment under pressure and inaccordance with the national usage regulations:• These relief valves and fuses are not safety accessoriesbut damage limitation accessories in case of a fire,• The high pressure switches are the safety accessories.The relief valve must only be removed if the fire risk is fullycontrolled and after checking that this is allowed by local regulationsand authorities. This is the responsibility of the operator.5When the unit is subjected to fire, safety devices prevent rupturedue to over-pressure by releasing refrigerant. The fluid maythen be decomposed into toxic residues when subjected to theflame:• Stay away from the unit• Set up warnings and recommendations for personnel incharge to stop the fire.• Fire extinguishers appropriate to the system and therefrigerant type must be easily accessible.The external relief valves must in principle be connected todischarge pipes for units installed in a room. Refer to theinstallation regulations, for example those of European standardsEN 378 and EN 13136.They include a sizing method and examples for configurationand calculation. Under certain conditions these standards permitconnection of several valves to the same discharge pipe. Note:Like all other standards these EN standards are available fromnational standards organisations.These pipes must be installed in a way that ensures that peopleand property are not exposed to refrigerant leaks. These fluidsmay be diffused in the air, but far away from any building airintake, or they must be discharged in a quantity that is appropriatefor a suitably absorbing environment.It is recommended to install an indicating device to show if partof the refrigerant has leaked from the valve. The presence of oilat the outlet orifice is a useful indicator that refrigerant hasleaked. Keep this orifice clean to ensure that any leaks are obvious.The calibration of a valve that has leaked is generally lowerthan its original calibration. The new calibration may affect theoperating range. To avoid a nuisance tripping or leaks, replaceor re-calibrate the valve.Periodic check of the relief valves: See paragraph 1.3“Maintenance safety considerations”.Provide a drain in the discharge circuit, close to each reliefvalve, to avoid an accumulation of condensate or rain water.Ensure good ventilation, as accumulation of refrigerant in anenclosed space can displace oxygen and cause asphyxiation orexplosions.Inhalation of high concentrations of vapour is harmful andmay cause heart irregularities, unconsciousness, or death.Vapour is heavier than air and reduces the amount of oxygenavailable for breathing. These products cause eye and skinirritation. Decomposition products are hazardous.1.2 - Equipment and components under pressureThe units are intended to be stored and operate in an environmentwhere the ambient temperature must not be less than the lowestallowable temperature indicated on the nameplate. See section“10.2 - Pressure vessels”.1.3 - Maintenance safety considerationsCarrier recommends the following drafting for a logbook (thetable below should not be considered as reference and does notinvolve Carrier responsibility):Intervention Name of thecommissioningengineerApplicablenationalregulationsVerificationOrganism Date Nature (1)(1)   Maintenance, repairs, regular verifications (EN 378), leakage, etc.Engineers working on the electric or refrigeration componentsmust be authorized, trained and fully qualified to do so.All refrigerant circuit repairs must be carried out by a trainedperson, fully qualified to work on these units. He must have beentrained and be familiar with the equipment and the installation.All welding operations must be carried out by qualified specialists.The insulation must be removed and heat generation must belimited by using a wet cloth.Any manipulation (opening or closing) of a shut-off valve mustbe carried out by a qualified and authorised engineer. Theseprocedures must be carried out with the unit shut-down.NOTE: The unit must never be left shut down with the liquidline valve closed, as liquid refrigerant can be trapped betweenthis valve and the expansion device. (This valve is situated onthe liquid line before the filter drier box.)During any handling, maintenance and service operations theengineers working on the unit must be equipped with safetygloves, glasses, shoes and protective clothing.Never work on a unit that is still energized.Never work on any of the electrical components, until the generalpower supply to the unit has been cut using the disconnectswitch(es) in the control box(es).If any maintenance operations are carried out on the unit, lockthe power supply circuit in the open position ahead of themachine.If the work is interrupted, always ensure that all circuits arestill deenergized before resuming the work.ATTENTION: Even if the unit has been switched off, the powercircuit remains energized, unless the unit or circuit disconnectswitch is open. Refer to the wiring diagram for further details.Attach appropriate safety labels.Operating checks:IMPORTANT INFORMATION REGARDING THEREFRIGERANT USED:• This product contains fluorinated greenhouse gas coveredby the Kyoto protocol.Fluid type: R134aGlobal Warming Potential (GWP): 14306Consult Carrier Service for this type of test. Carrier mentions hereonly the principle of a test without removing the pressure switch:- Verify and and record the setpoints of pressureswitches and relief devices (valves and possiblerupture discs)- Be ready to switch-off the main disconnect switch ofthe power supply if the pressure switch does nottrigger (avoid over-pressure or excess gas in case ofvalves on the high-pressure side with the recoverycondensers)- Connect a calibrated pressure gauge (the valuesdisplayed on the user interface may be inaccurate inan instant reading because of the scanning delayapplied in the control)- Neutralise the HP soft value- Cut the condenser water flow- Check the cut-off value- Reactivate HP soft value- Reactivate manually HP switch.CAUTION: If the test leads to replacing the pressure switch, itis necessary to recover the refrigerant charge, these pressureswitches are not installed on automatic valves (Schraeder type).At least once a year thoroughly inspect the protection devices(valves). If the machine operates in a corrosive environment,inspect the protection devices more frequently.Regularly carry out leak tests and immediately repair any leaks.Ensure regularly that the vibration levels remain acceptableand close to those at the initial unit start-up.Before opening a refrigerant circuit, purge and consult thepressure gauges.Change the refrigerant when there are equipment failures,following a procedure such as the one described in NF E29-795or carry out a refrigerant analysis in a specialist laboratory.If the refrigerant circuit remains open for longer than a day afteran intervention (such as a component replacement), the openingsmust be plugged and the circuit must be charged with nitrogen(inertia principle). The objective is to prevent penetration ofatmospheric humidity and the resulting corrosion on the internalwalls and on non-protected steel surfaces.CAUTION:1. Any handling of refrigerant contained in this product mustcomply with the F-Gas Directive N° 517/2014 and any otherapplicable local legislation.2. Ensure that the refrigerant is never released to theatmosphere during installation, maintenance or equipmentdisposal.3. The deliberate gas release into the atmosphere is strictlynot allowed.4. If a refrigerant leak is detected, ensure that it is stoppedand repaired as quickly as possible.5. Only a qualified and certified personnel can performinstallation operations, maintenance, refrigerant circuitleak test as well as the equipment disposal and the refrigerantrecovering.6. The gas recovery for recycling, regeneration or destructionis at customer charge.7. The customer has to carry out periodic leak testsSystem WITHOUTleakage detection No check 12 months 6 months 3 monthsSystem WITH leakagedetection No check 24 months 12 months 6 monthsRefrigerant charge/circuit(CO2 equivalent) < 5 tons 5 ≤ charge <50 tons50 ≤ charge< 500 tonsCharge >500 tons*Refrigerantcharge/Circuit (kg)R134A(GWP 1430)Charge <3.5 kg3.5 ≤ charge< 34.9 kg34.9 ≤charge <349.7 kgCharge >349.7 kgR407C(GWP 1774)Charge <2.8 kg2.8 ≤ charge< 28.2 kg28.2 ≤charge <281.9 kgCharge >281.9 kgR410A(GWP 2088)Charge <2.4 kg2.4 ≤ charge< 23.9 kg23.9 ≤charge <239.5 kgCharge >239.5 kgHFO’s:R1234ze No requirement* From 01/01/2017, units must be equipped with a leakage detection system8. A logbook must be established for the systems that requirea tightness check. It should contain the quantity and thetype of fluid present within the installation (added andrecovered), the quantity of recycled fluid/regenerated/destroyed, the date and output of the leak test, the designationof the operator and its belonging company, etc.9. Contact your local dealer or installer if you have anyquestions.Protection device checks (EN 378):The safety devices must be checked on site once a year for safetydevices (see chapter 11.3 - Highpressure safety switch), andevery five years for external overpressure devices (external reliefvalves).The company or organisation that conducts a pressure switch testshall establish and implement a detailed procedure to fix:- Safety measures- Measuring equipment calibration- Validating operation of protective devices- Test protocols- Recommissioning of the equipment.71.4 - Repair safety considerationsIt is compulsory to wear personal protection equipment.The insulation must be removed and warming up must be limitedby using a wet cloth.Before opening the unit always ensure that the circuit has beenpurged.If work on the evaporator is required, ensure that the piping fromthe compressor is no longer pressurised (as the valve is notleaktight in the compressor direction.)All installation parts must be maintained by the personnel in charge,in order to avoid material deterioration and injuries to people. Faultsand leaks must be repaired immediately. The authorized technicianmust have the responsibility to repair the fault immediately. Eachtime repairs have been carried out to the unit, the operation of theprotection devices must be re-checked.Comply with the regulations and recommendations in unit and HVACinstallation safety standards, such as: EN 378, ISO 5149, etc.If a leak occurs or if the refrigerant becomes contaminated (e.g.by a short circuit in a motor) remove the complete charge usinga recovery unit and store the refrigerant in mobile containers.Repair the leak detected and recharge the circuit with the totalR-134a charge, as indicated on the unit name plate. Certain partsof the circuit can be isolated. Only charge liquid refrigerantR-134a at the liquid line.Ensure that you are using the correct refrigerant type beforerecharging the unit.Charging any refrigerant other than the original charge type(R-134a) will impair machine operation and can even lead to adestruction of the compressors. The compressors operating withthis refrigerant type are lubricated with a synthetic polyolesteroil.RISK OF EXPLOSION:Do not use oxygen to purge lines or to pressurize a machine forany purpose. Oxygen gas reacts violently with oil, grease, andother common substances.Never exceed the specified maximum operating pressures. Verifythe allowable maximum high- and low-side test pressures bychecking the instructions in this manual and the pressures givenon the unit name plate.Do not use air for leak testing. Use only refrigerant or drynitrogen.Do not unweld or flamecut the refrigerant lines or any refrigerantcircuit component until all refrigerant (liquid and vapour) hasbeen removed from chiller. Traces of vapour should be displacedwith dry air nitrogen. Refrigerant in contact with an open flameproduces toxic gases.The necessary protection equipment must be available, andappropriate fire extinguishers for the system and the refrigeranttype used must be within easy reach.Do not siphon refrigerant.Avoid contact with liquid refrigerant on the skin or splashingit into the eyes. Use safety goggles. Wash any spills from theskin with soap and water. If liquid refrigerant enters the eyes,immediately and abundantly flush the eyes with water andconsult a doctor.The accidental releases of the refrigerant, due to small leaks orsignificant discharges following the rupture of a pipe or anunexpected release from a relief valve, can cause frostbites andburns to personnel exposed. Do not ignore such injuries.Installers, owners and especially service engineers for theseunits must:- Seek medical attention before treating such injuries.- Have access to a first-aid kit, especially for treating eyeinjuries.We recommend to apply standard EN 378-3 Annex 3.Never apply an open flame or live steam to a refrigerant container.Dangerous overpressure can result. If it is necessary to heatrefrigerant, use only warm water.During refrigerant removal and storage operations followapplicable regulations. These regulations, permittingconditioning and recovery of halogenated hydrocarbons underoptimum quality conditions for the products and optimum safetyconditions for people, property and the environment are describedin standard NF E29-795.Any refrigerant transfer and recovery operations must be carriedout using a transfer unit. A 3/8” SAE connector on the manualliquid line valve is supplied with all units for connection to thetransfer station. The units must never be modified to addrefrigerant and oil charging, removal and purging devices. Allthese devices are provided with the units. Please refer to thecertified dimensional drawings for the units.Do not re-use disposable (non-returnable) cylinders or attemptto refill them. It is dangerous and illegal. When cylinders areempty, evacuate the remaining gas pressure, and move thecylinders to a place designated for their recovery. Do notincinerate.ATTENTION: Only use refrigerant R134a, in accordance with700 AHRI (Air conditioning, Heating and RefrigerationInstitute). The use of any other refrigerant may expose usersand operators to unexpected risks.Do not attempt to remove refrigerant circuit components orfittings, while the machine is under pressure or while it isrunning. Be sure pressure is at 0 kPa before removing componentsor opening a circuit.Do not attempt to repair or recondition any safety devices whencorrosion or build-up of foreign material (rust, dirt, scale, etc.)is found within the valve body or mechanism. If necessary,replace the device. Do not install relief valves in series orbackwards.82 - PRELIMINARY CHECKS2.1 - Check equipment received• Inspect the unit for damage or missing parts. If damageis detected, or if shipment is incomplete, immediatelyfile a claim with the shipping company.• Confirm that the unit received is the one ordered.Compare the name plate data with the order.• The unit name plate must include the followinginformation:- Version number- Model number- CE marking- Serial number- Year of manufacture and test date- Fluid being transported- Refrigerant used and refrigerant class- Refrigerant charge per circuit- Containment fluid to be used- PS: Min./max. allowable pressure (high and lowpressure side)- TS: Min./max. allowable temperature (high and lowpressure side)- Pressure switch cut-out pressures- Unit leak test pressure- Voltage, frequency, number of phases- Maximum current drawn- Maximum power input- Unit net weight• Confirm that all accessories ordered for on-siteinstallation have been delivered, and are complete andundamaged.The unit must be checked periodically during its whole operatinglife to ensure that no shocks (handling accessories, tools etc.) havedamaged it. If necessary, the damaged parts must be repaired orreplaced. See also chapter 12 “Standard maintenance”.ATTENTION: No part of the unit must be used as a walk-way,rack or support. Periodically check and repair or if necessaryreplace any component or piping that shows signs of damage.The refrigerant lines can break under the weight and releaserefrigerant, causing personal injury.Do not climb on a machine. Use a platform, or staging to workat higher levels.Use mechanical lifting equipment (crane, hoist, winch, etc.) to liftor move heavy components. For lighter components, use liftingequipment when there is a risk of slipping or losing your balance.Use only original replacement parts for any repair or componentreplacement. Consult the list of replacement parts thatcorresponds to the specification of the original equipment.Do not drain water circuits containing industrial brines, withoutinforming the technical service department at the installationsite or a competent body first.Close the entering and leaving water shutoff valves and purgethe unit water circuit, before working on the components installedon the circuit (screen filter, pump, water flow switch, etc.).Do not loosen the water box bolts until the water boxes havebeen completely drained.Periodically inspect all valves, fittings and pipes of the refrigerantand hydronic circuits to ensure that they do not show anycorrosion or any signs of leaks.It is recommended to wear ear defenders, when working nearthe unit and the unit is in operation.92.2 - Moving and siting the unit2.2.1 - MovingSee chapter 1.1 “Installation safety considerations”.CAUTION: Only use slings at the designated lifting points whichare marked on the unit.2.2.2 - Siting the unitAlways refer to the chapter “Dimensions and clearances” toconfirm that there is adequate space for all connections and serviceoperations. For the centre of gravity coordinates, the position ofthe unit mounting holes, and the weight distribution points, referto the certified dimensional drawing supplied with the unit.Typical applications of these units are in refrigeration systems,and they do not require earthquake resistance. Earthquakeresistance has not been verified.Before siting the unit check that:• the permitted loading at the site is adequate or thatappropriate strenghtening measures have been taken.• the unit is installed level on an even surface (maximumtolerance is 5 mm in both axes).• there is adequate space above the unit for air flow andto ensure access to the components.• the number of support points is adequate and that theyare in the right places.• the location is not subject to flooding.CAUTION: Lift and set down the unit with great care. Tiltingand jarring can damage the unit and impair unit operation.2.2.3 - Checks before system start-upBefore the start-up of the refrigeration system, the completeinstallation, including the refrigeration system must be verifiedagainst the installation drawings, dimensional drawings, systempiping and instrumentation diagrams and the wiring diagrams.During the installation test national regulations must be followed.If no national regulation exists, standard EN 378 can be used asa guide.• External visual installation checks:• Ensure that the machine is charged with refrigerant.Verify on the unit nameplate that the ‘fluid beingtransported’ is R-134a and is not nitrogen.• Compare the complete installation with the refrigerationsystem and power circuit diagrams.• Check that all components comply with the designspecifications.• Check that all protection documents and equipmentprovided by the manufacturer (dimensional drawings,P&ID, declarations etc.) to comply with the regulationsare present.• Verify that the environmental safety and protection anddevices and arrangements provided by the manufacturerto comply with the regulations are in place.• Verify that all document for pressure containers,certificates, name plates, files, instruction manualsprovided by the manufacturer to comply with theregulations are present.• Verify the free passage of access and safety routes.• Check that ventilation in the plant room is adequate.• Check that refrigerant detectors are present.• Verify the instructions and directives to prevent thedeliberate removal of refrigerant gases that are harmfulto the environment.• Verify the installation of connections.• Verify the supports and fixing elements (materials, routingand connection).• Verify the quality of welds and other joints.• Check the protection against mechanical damage.• Check the protection against heat.• Check the protection of moving parts.• Verify the accessibility for maintenance or repair andto check the piping.• Verify the status of the valves.• Verify the quality of the thermal insulation and of thevapour barriers.103 - DIMENSIONS, CLEARANCES, WEIGHT DISTRIBUTION3.1 - 30HXC 080-19030HXC A B C D E F080-090-100 2558 980 1800 2200 1000 385110 2565 980 1850 2200 1000 385120-130-140-155 3275 980 1816 2990 1000 689175-190 3275 980 1940 2990 1000 689NOTE: Refer to the certified dimensional drawings suppliedwith the unit, when designing an installation.30HXC-08030HXC-09030HXC-10030HXC-110D AB600500470043CE33F12Legend All dimensions are in mm.EvaporatorCondenserClearances required for operation and maintenance Clearances required for heat exchanger tube removal. Clearances Dand E can be either on the left or on the right hand side.Water inletWater outletPower supplyabcd113.2 - 30HXC 200-37530HXC A B C D E F200 3903 1015 1980 3600 1000 489230-260-285 3924 1015 2060 3600 1000 489310-345-375 4533 1015 2112 4200 1000 503NOTE: Refer to the certified dimensional drawings suppliedwith the unit, when designing an installation.42E500 B3ACD700345003F1Legend All dimensions are in mm.EvaporatorCondenserClearances required for operation and maintenance Clearances required for heat exchanger tube removal. Clearances Dand E can be either on the left or on the right hand side.Water inletWater outletPower supplyabcd123.3 - Multiple chiller installationNOTE: If the walls are higher than 2 m, contact the factory.LegendA WallB UnitsNotesUnit must have clearances for air flow as follows:Top: do not restrict in any wayIn case of multiple chillers (up to four units), the respective clearance between themshould be increased from 1830 to 2000 mm for the side space requirement.If necessary, add the required clearances for evaporator tube removal. 2000 18302000 18302000 200015251525ABBBBB BB BA134 - PHYSICAL AND ELECTRICAL DATA - STANDARD 50HZ APPLICATION4.1 - Physical data 30HXC30HXC 080 090 100 110 120 130 140 155 175 190 200 230 260 285 310 345 375Sound levels - standard unitSound power level (1) dB(A) 94 94 94 94 94 97 98 100 101 101 99 101 102 102 103 104 104Sound pressure level at 1 m (2) dB(A) 77 77 77 77 76 79 80 82 83 83 80 82 83 83 84 85 85Operating weight kg 2274 2279 2302 2343 2615 2617 2702 2712 3083 3179 3873 4602 4656 4776 5477 5553 5721Compressor size Semi-hermetic, twin-screw The compressor size is identified by its nominal cooling capacity in tons of refrigeration (1 ton =3.517 kW)Circuit A 39 46 46 56 56 66 80 80 80 80+ 66/56 80/56 80/80 80+/80+ 80/66 80/80 80+/80+Circuit B 39 39 46 46 56 56 56 66 80 80+ 66 80 80 80+ 80/66 80/80 80+/80+Refrigerant - standard unit (3) R-134aCircuit A kg 33 33 32 31 49 51 48 54 54 75 92 115 117 132 109 96 119teqCO2 47 47 46 44 70 73 69 77 77 100 132 164 167 189 156 137 170Circuit B kg 34 34 30 35 52 47 48 57 50 75 68 63 75 80 106 109 137teqCO2 49 49 43 50 74 67 69 82 72 100 97 90 107 114 152 156 196Oil - standard unit (4) Polyolester oil CARRIER SPEC. PP 47-32Circuit A/B l 17/17 17/17 17/17 17/17 17/17 17/17 17/17 17/17 17/17 17/17 30/17 30/17 30/17 30/17 34/34 34/34 34/34Capacity control PRO-DIALOG Plus controlNo. of control steps 6 6 6 6 6 6 6 6 6 6 8 8 8 8 10 10 10Minimum step capacity % 19 19 21 19 21 19 17 19 21 21 14 14 14 14 10 10 10Evaporator Shell and tube with internally finned copper tubesNet water volume l 50 50 58 69 65 65 75 75 88 88 126 155 170 170 191 208 208Water connections Victaulic connectionsInlet/outlet in 4 4 4 5 5 5 5 5 5 5 6 6 6 6 8 8 8Drain and vent (NPT) in 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8Max. water-side operating pressure kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000Condenser Shell and tube with internally finned copper tubesNet water volume l 48 48 48 48 78 78 90 90 108 108 141 190 190 190 255 255 255Water connections Victaulic connectionsInlet/outlet in 5 5 5 5 5 5 5 5 6 6 6 8 8 8 8 8 8Drain and vent (NPT) in 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8Max. water-side operating pressure kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000(1) In dB ref=10-12 W, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of +/-3dB(A)). Measured inaccordance with ISO 9614-1 and certified by Eurovent. (2) In dB ref 20µPa, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of +/-3dB(A)). Forinformation, calculated from the sound power level Lw(A). (3) Values shown are guidelines only. Please refer to the unit nameplate. (4) For options 150 and 150A the units are supplied with an additional charge of 3 litres per compressor.144.2 - Electrical data 30HXC30HXC 080 090 100 110 120 130 140 155 175 190 200 230 260 285 310 345 375Power circuitNominal power supply (Un)* V-ph-Hz 400-3-50Voltage range V 360-440Control circuit supply The control circuit is supplied via the factory-installed transformerNominal power input* kW 53 62 67 76 80 89 102 112 121 129 140 164 192 195 221 250 263Nominal current drawn* A 101 115 127 143 149 168 190 207 226 234 255 294 337 354 399 448 477Max. power input** kW 87 97 108 119 131 144 161 175 192 212 223 257 288 318 350 384 424Circuit A kW - - - - - - - - - - 144 161 192 212 175 192 212Circuit B kW - - - - - - - - - - 79 96 96 106 175 192 212Cosine phi, unit at full load 0.88 0.88 0.88 0.88 0.89 0.88 0.88 0.89 0.89 0.89 0.88 0.89 0.89 0.89 0.89 0.89 0.89Total harmonic distortion*** % 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Max. current drawn (Un - 10%)*** A 158 176 195 215 235 259 289 314 344 379 401 461 517 568 628 688 758Circuit A A - - - - - - - - - - 259 289 344 379 314 344 379Circuit B A - - - - - - - - - - 142 172 172 189 314 344 379Max. current drawn (Un)*** A 143 160 177 195 213 236 263 285 312 344 365 419 468 516 570 624 688Circuit A*** A - - - - - - - - - - 236 263 312 344 285 312 344Circuit B*** A - - - - - - - - - - 129 156 156 172 285 312 344Max. starting current, std. unit (Un)**** A 181 206 223 249 267 298 333 355 382 442 841 978 1027 1200 1129 1184 1373Circuit A**** A - - - - - - - - - - 712 822 871 1028 844 871 1028Circuit B**** A - - - - - - - - - - 605 715 715 856 844 871 1028Max. starting current/max. currentdraw ratio, unit1.26 1.28 1.26 1.27 1.25 1.26 1.27 1.24 1.22 1.28 2.31 2.33 2.19 2.32 1.98 1.89 1.99Max. starting current/max. currentdraw ratio, circuit A - - - - - - - - - - 3.02 3.13 2.79 2.99 2.96 2.79 2.99Max. starting current/max. currentdraw ratio, circuit B - - - - - - - - - 4.70 4.58 4.58 4.97 2.96 2.79 2.99Max. starting current - reduced currentstart (Un)****A std. std. std. std. std. std. std. std. std. std. 636 683 732 824 834 889 997Circuit A A std. std. std. std. std. std. std. std. std. std. 507 527 576 652 549 576 652Circuit B A std. std. std. std. std. std. std. std. std. std. 330 370 370 385 549 576 652Max. starting current - red. currentstart/max. current draw ratio, unitstd. std. std. std. std. std. std. std. std. std. 1.74 1.63 1.56 1.60 1.46 1.42 1.45Circuit A std. std. std. std. std. std. std. std. std. std. 2.15 2.00 1.84 1.89 1.93 1.84 1.98Circuit B std. std. std. std. std. std. std. std. std. std. 2.56 2.37 2.37 2.24 1.93 1.84 1.89Three-phase short circuit holdingcurrentkA 25 25 25 25 25 25 25 25 25 25 N/A N/A N/A N/A N/A N/A N/ACircuit A kA - - - - - - - - - - 25 25 25 25 25 25 25Circuit B kA - - - - - - - - - - 15 15 15 15 25 25 25Customer standby capacity, unit orcircuit B, for evaporator water pumpconnections†kW 8 8 8 11 11 11 15 15 15 15 15 18 18 30 30 30 30* Standard Eurovent conditions: Evaporator entering/leaving water temperature 12°C and 7°C. Condenser entering/leaving water temperature 30°C/35°C.** Power input, compressor, at unit operating limits (evaporator water entering/leaving temperature = 15°C/10°C, condenser entering/leaving water temperature =45°C/50°C) and a nominal voltage of 400 V (data given on the unit name plate).*** Maximum unit operating current at maximum unit power input.**** Maximum instantaneous starting current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced starting current of the largestcompressor)† Current and power inputs not included in the values above.N/ANot applicable.154.3 - Compressor electrical data 30HXCReference Size I nom. MHA LRA LRA (Y) LRA (S) 1 cp LRA (S) 2 cp06NW2146S7N 39 50 79 344 109 NA NA06NW2174S7N 46 60 97 423 134 NA NA06NW2209S7N 56 71 117 506 160 260 35006NW2250S7N 66 86 142 605 191 330 40006NW2300S5N 80 105 172 715 226 370 42006NW2300S5E 80+ 114 189 856 270 385 480Legend06NW - Compressor for water-cooled unitsN - Non-economized compressorE - Economized compressorI nom. - Average current draw of the compressor at Eurovent conditions (A)MHA - Must hold amperes (maximum operating current) at 360 V (A)LRA - Locked rotor current with across-the-line start (A)LRA (Y) - Locked rotor current at reduced current (star/delta start-up mode) (A)LRA (S) 1 cp. - Start-up with reduced current (A) with electronic starter (start-up duration 3 seconds max.) for one compressor per circuitLRA (S) 2 cp. - Start-up with reduced current (A) with electronic starter (start-up duration 3 seconds max.) for two compressors per circuit4.4 - Electrical data for 30HXC units with high condensing temperatures (option 150/150A)30HXC 080 090 100 110 120 130 140 155 175 190 200 230 260 285 310 345 375Power circuitNominal power supply (Un)* V-ph-Hz 400-3-50Voltage range V 360-440Control circuit supply The control circuit is supplied via the factory-installed transformerMax. power input* kW 108 122 136 149 163 180 196 213 229 287 278 310 343 431 426 458 574Circuit A kW - - - - - - - - - - 180 196 229 287 213 229 287Circuit B kW - - - - - - - - - - 98 114 114 144 213 229 287Max. current drawn (Un - 10%)** A 198 223 247 271 295 325 355 385 415 516 502 562 622 774 770 830 1032Circuit A A - - - - - - - - - - 325 355 415 516 385 415 516Circuit B A - - - - - - - - - - 177 207 207 258 385 415 516Maximum current drawn (Un)** A 180 203 225 246 268 295 323 350 377 469 456 512 566 704 700 754 938Circuit A A - - - - - - - - - - 295 323 377 469 350 377 469Circuit B A - - - - - - - - - - 161 189 189 235 350 377 469Maximum starting current,standard unit (Un)*** A 281 316 338 382 404 437 521 548 576 635 1255 1549 1603 1734 1737 1792 1969Circuit A*** A - - - - - - - - - - 1094 1360 1415 1500 1387 1415 1500Circuit B*** A - - - - - - - - - - 960 1226 1226 1265 1387 1415 1500Max. starting current/max. currentdraw ratio, unit 1.56 1.56 1.51 1.55 1.51 1.48 1.62 1.57 1.53 1.35 2.75 3.03 2.83 2.46 2.48 2.38 2.10Max. starting current/max. currentdraw ratio, circuit A - - - - - - - - - - 3.71 4.22 3.75 3.19 3.97 3.75 3.19Max. starting current/max. currentdraw ratio, circuit B - - - - - - - - - 5.96 6.50 6.50 5.39 3.97 3.75 3.19Max. starting current - reducedcurrent start (Un)*** A std. std. std. std. std. std. std. std. std. std. 870 933 987 1129 1121 1176 1364Circuit A A std. std. std. std. std. std. std. std. std. std. 709 744 799 895 771 799 895Circuit B A std. std. std. std. std. std. std. std. std. std. 435 490 490 510 771 799 895Max.starting current - red. currentstart/max. current draw ratio, unit std. std. std. std. std. std. std. std. std. std. 1.91 1.82 1.75 1.60 1.60 1.56 1.45Circuit A std. std. std. std. std. std. std. std. std. std. 2.40 2.31 2.12 1.91 2.21 2.12 1.91Circuit B std. std. std. std. std. std. std. std. std. std. 2.70 2.60 2.60 2.17 2.21 2.12 1.91Three-phase short circuit holdingcurrentkA 25 25 25 25 25 25 25 25 25 25 N/A N/A N/A N/A N/A N/A N/ACircuit A kA - - - - - - - - -. - 25 25 25 25 25 25 25Circuit B kA - - - - - - - - - - 15 15 15 15 25 25 25Customer standby capacity, unitor circuit B, for evaporatorwater pump connections† kW 8 8 8 11 11 11 15 15 15 15 15 18 18 30 30 30 30* Power input, compressor, at unit operating limits (evaporator water entering/leaving temperature = 15°C/10°C, condensing temperature = 68°C) and a nominal voltageof 400 V (data given on the unit name plate).** Maximum unit operating current at maximum unit power input.*** Maximum instantaneous starting current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced starting current of the largestcompressor)† Current and power inputs not included in the values aboveN/ANot applicable16The 30HXC 080-375 units for high condensing temperatures aredirectly derived from the standard models. Their applicationrange is the same as that of the standard units, but permitsoperation at condenser leaving water temperatures up to 63°C.The PRO-DIALOG control offers all the advantages of thestandard units, plus control of the condenser leaving watertemperature.The main modifications are:• Use of high lift compressors (example: 06NA2300S5Ninstead of 06NW 2300S5N).• Modification of electrical components to operate withcompressors for high condensing temperatures.• Modification of heat exchangers to meet pressure coderequirements (if necessary).Option 150These units are designed for traditional applications for watercooledunits, but for higher condender leaving water temperaturesthan 50°C.Like the standard units they are equipped with condenser enteringand leaving water sensors.It is possible to control the machine at the condenser water outlet,requiring a factory configuration change and the use of a heating/cooling inlet reversing device.Option 150AThese units are designed for water-to-water heat pumps.They are factory configured as heat pumps (heating/cooling controlas a function of the remote reversing device). The condenserincorporates thermal insulation that is identical to that of theevaporator.Technical informationAll information is identical to that of the standard 30HXC units,except for the following paragraphs.SelectionThere are no nominal conditions for this unit type. The selectionis made using the current electronic catalogue.DimensionsThese are identical to those of the standard 30HXC units. Theonly difference is in the diameter of the incoming field wiringconnection, described in the chapter “Recommended selection”.Refer to the dimensional drawings for these units, beforeproceeding with the wiring.CompressorSee table in chapter 4.5.Options and accessoriesAll options available for the standard 30HXC units are compatible,except low-temperature option 5 for the evaporator available inthe special unit.ATTENTION: If units have two different operating modes - onewith high condensing temperature and the other with lowcondensing temperature - and the transition is made with theunit in operation, the temperature must not vary by more than3K per minute. In cases where this is not possible, it isrecommended to go through a unit start/stop switch (remotestart/stop available for standard units).4.5 - Compressor electrical data 30HXC + option 150/150AReference Size I nom. MHA LRA LRA (Y) LRA (S) 1 cp. LRA (S) 2 cp.06NA2146S7N 39 72 99 605 191 NA NA06NA2174S7N 46 87 124 715 226 NA NA06NA2209S7N 56 103 148 856 270 330 48006NA2250S7N 66 124 177 960 303 435 57506NA2300S5N 80 149 207 1226 387 490 61006NA2300S5E 80+ 174 258 1265 400 510 660Legend06NA - Compressor for air-cooled unitsN - Non-economized compressorE - Economized compressorI nom. - Average current draw of the compressor at Eurovent conditions (A)MHA - Must hold amperes (maximum operating current) at 360 V (A)LRA - Locked rotor current with across-the-line start (A)LRA (Y) - Locked rotor current at reduced current (star/delta start-up mode) (A)LRA (S) 1 cp. - Start-up with reduced current (A) with electronic starter (start-up duration 3 seconds max.) for one compressor per circuitLRA (S) 2 cp. - Start-up with reduced current (A) with electronic starter (start-up duration 3 seconds max.) for two compressors per circuit175 - PHYSICAL AND ELECTRICAL DATA - OPTIONAL 60HZ APPLICATION (OPTION 60/61)5.1 - Physical data - 30HXC + option 60 (460V-3ph-60Hz)30HXC 080 090 100 110 120 130 140 155 175 190 200 230 260 285 310 345 375Operating weight* kg 2274 2279 2302 2343 2615 2617 2702 2712 3083 3179 3873 4602 4656 4776 5477 5553 5721Refrigerant charge* kg HFC-134aCircuit A 33 33 32 31 49 51 48 54 54 70 92 115 117 132 109 96 119Circuit B 34 34 30 35 52 47 48 57 50 70 68 63 75 80 106 109 137Oil Polyolester oil CARRIER SPEC. PP 47-32Circuit A l 15 15 15 15 15 15 15 15 15 15 30 30 30 30 30 30 30Circuit B l 15 15 15 15 15 15 15 15 15 15 15 15 15 15 30 30 30Compressors** Semi-hermetic, twin-screw POWER3Size - Circuit A 39 46 46 56 56 66 80 80 80 80+ 66/56 80/56 80/80 80+/80+ 80/66 80/80 80+/80+Size - Circuit B 39 39 46 46 56 56 56 66 80 80+ 66 80 80 80+ 80/66 80/80 80+/80+Capacity control PRO-DIALOG Plus controlNo. of control steps 6 6 6 6 6 6 6 6 6 6 8 8 8 8 10 10 10Minimum step capacity % 19 19 21 19 21 19 17 19 21 21 14 14 14 14 10 10 10Evaporator Shell and tube with internally finned copper tubesNet water volume l 50 50 58 69 65 65 75 75 88 88 126 155 170 170 191 208 208Water connections Victaulic connectionsInlet/outlet in 4 4 4 5 5 5 5 5 5 5 6 6 6 6 8 8 8Drain and vent (NPT) in 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8Max. water-side operating pressure kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000Condenser Shell and tube with internally finned copper tubesNet water volume l 48 48 48 48 78 78 90 90 108 108 141 190 190 190 255 255 255Water connections Victaulic connectionsInlet/outlet in 5 5 5 5 5 5 5 5 6 6 6 8 8 8 8 8 8Drain and vent (NPT) in 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8Max. water-side operating pressure kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000* The weights shown are guidelines only. For the unit refrigerant charge please refer to the unit nameplate.** Nominal size per compressor.The compressor size is the same as its nominal cooling capacity in tons of refrigeration (1 ton = 3.517 kW).185.2 - Electrical data - 30HXC + option 6030HXC 080 090 100 110 120 130 140 155 175 190 200 230 260 285 310 345 375Power circuitNominal power supply (Un)* V-ph-Hz 460-3-60Voltage range V 414-506Control circuit supply The control circuit is supplied via the factory-installed transformerNominal operating power input* kW 56 63 69 78 82 91 103 111 123 129 142 166 189 198 223 249 261Nominal operating current drawn* A 94 101 109 121 133 147 164 178 194 213 228 260 291 319 355 388 425Total harmonic distortion*** % 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Max. operating power input** kW 87 96 105 118 130 144 159 172 187 212 223 253 281 318 344 374 424Circuit A** kW - - - - - - - - - - 144 159 187 212 172 187 212Circuit B** kW - - - - - - - - - - 79 94 94 106 172 187 212Max. operating current drawn(Un - 10%)***A 134 147 161 180 200 220 243 263 286 324 340 386 429 486 526 572 648Circuit A*** A - - - - - - - - - - 220 243 286 324 263 286 324Circuit B*** A - - - - - - - - - - 120 143 143 162 263 286 324Maximum operating current drawn(Un)***A 122 134 146 164 182 200 221 239 260 294 309 351 390 441 478 520 588Circuit A*** A - - - - - - - - - - 200 221 260 294 239 260 294Circuit B*** A - - - - - - - - - - 109 130 130 147 239 260 294Maximum starting current,standard unit (Un)†A 165 165 177 201 195 244 274 292 313 363 685 801 840 979 928 970 1126Circuit A*** A - - - - - - - - - - 576 671 710 832 689 710 832Circuit B*** A - - - - - - - - - - 485 580 580 685 689 710 832Max. starting current/max. currentdraw ratio, unit1,35 1,23 1,21 1,23 1,19 1,22 1,24 1,22 1,20 1,23 2,22 2,28 2,15 2,22 1,94 1,87 1,91Max. starting current/max. currentdraw ratio, circuit A - - - - - - - - - - 2,88 3,04 2,73 2,83 2,88 2,73 2,83Max. starting current/max. currentdraw ratio, circuit B - - - - - - - - - 4,45 4,46 4,46 4,66 2,88 2,73 2,83Max. starting current - reducedcurrent start (Un)†A std std std std std std std std std std 550 621 660 714 748 790 861Circuit A A - - - - - - - - - - 441 491 530 567 509 530 567Circuit B A - - - - - - - - - - 260 330 330 370 509 530 567Max. starting current - red. currentstart/max. current draw ratio, unitstd std std std std std std std std std 1,78 1,77 1,69 1,62 1,56 1,52 1,46Circuit A - - - - - - - - - - 2,21 2,22 2,04 1,93 2,13 2,04 1,93Circuit B - - - - - - - - - - 2,39 2,54 2,54 2,52 2,13 2,04 1,93Three-phase short circuit holdingcurrentkA 25 25 25 25 25 25 25 25 25 25 N/A N/A N/A N/A N/A N/A N/ACircuit A kA - - - - - - - - - - 25 25 25 25 25 25 25Circuit B kA - - - - - - - - - - 15 15 15 15 25 25 25Customer standby capacity, unitor circuit B, for evaporator waterpump connections‡kW 8 8 8 11 11 11 15 15 15 15 15 18 18 30 30 30 30* Based on standardised ARI conditions: Evaporator entering/leaving water temperature 12.2°C and 6.7°C. Condenser entering/leaving water temperature 29.6°C/35°C.** Power input, compressor, at unit operating limits (evaporator water entering/leaving temperature = 15°C/10°C, condenser entering/leaving water temperature =45°C/50°C) and a nominal voltage of 460 V (data given on the unit name plate).*** Maximum unit operating current at maximum unit power input. † Maximum instantaneous starting current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced starting current of the largestcompressor) ‡ Current and power inputs not included in the values above. N/A Not applicable195.3 - Electrical data - 30HXC + option 60 with high condensing temperature (options 150/150A)30HXC 080 090 100 110 120 130 140 155 175 190 200 230 260 285 310 345 375Power circuitNominal power supply (Un)* V-ph-Hz 460-3-60Voltage range V 414-506Control circuit supply The control circuit is supplied via the factory-installed transformerMax. operationg power input* kW 107 119 131 146 162 180 196 214 231 277 279 312 347 415 429 462 553Circuit A kW - - - - - - - - - - 180 196 231 277 214 231 277Circuit B kW - - - - - - - - - - 99 116 116 138 214 231 277Max. operating current drawn(Un - 10%)**A 167 185 204 227 251 278 303 331 356 427 431 481 534 641 662 712 854Circuit A A - - - - - - - - - - 278 303 356 427 331 356 427Circuit B A - - - - - - - - - - 153 178 178 214 331 356 427Maximum operating current drawn(Un)**A 152 169 185 207 228 253 276 301 324 388 392 438 486 582 602 648 776Circuit A A - - - - - - - - - - 253 276 324 388 301 324 388Circuit B A - - - - - - - - - - 139 162 162 194 301 324 388Maximum starting current,standard unit (Un)†A 234 264 280 313 302 378 410 436 467 568 1084 1215 1272 1569 1386 1448 1766Circuit A† A - - - - - - - - - - 939 1039 1096 1372 1065 1096 1372Circuit B† A - - - - - - - - - - 820 920 920 1175 1065 1096 1372Max. starting current/max.current draw ratio, unit1,44 1,48 1,44 1,45 1,40 1,43 1,39 1,36 1,33 1,44 2,65 2,58 2,41 2,65 2,16 2,06 2,24Max. starting current/max.current draw ratio, circuit A- - - - - - - - - - 3,56 3,52 3,11 3,48 3,32 3,11 3,48Max. starting current/max.current draw ratio, circuit B- - - - - - - - - 5,66 5,23 5,23 5,96 3,32 3,11 3,48Max. starting current - reducedcurrent start (Un)†A std std std std std std std std std std 744 870 927 1054 1041 1103 1251Circuit A A - - - - - - - - - - 599 694 751 857 720 751 857Circuit B A - - - - - - - - - - 400 435 435 550 720 751 857Max.starting current - red. currentstart/max. current draw ratio, unitstd std std std std std std std std std 1,82 1,85 1,76 1,78 1,62 1,57 1,59Circuit A - - - - - - - - - - 2,27 2,35 2,13 2,18 2,24 2,13 2,18Circuit B - - - - - - - - - - 2,76 2,47 2,47 2,79 2,24 2,13 2,18Three-phase short circuit holdingcurrentkA 25 25 25 25 25 25 25 25 25 25 N/A N/A N/A N/A N/A N/A N/ACircuit A kA - - - - - - - - -. - 25 25 25 25 25 25 25Circuit B kA - - - - - - - - - - 15 15 15 15 25 25 25Customer standby capacity, unitor circuit B, for evaporator waterpump connections‡kW 8 8 8 11 11 11 15 15 15 15 15 18 18 30 30 30 30* Power input, compressor, at unit operating limits (evaporator water entering/leaving temperature = 15°C/10°C, condensing temperature = 68°C) and a nominal voltageof 460 V (data given on the unit name plate).** Maximum unit operating current at maximum unit power input. † Maximum instantaneous starting current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced starting current of the largestcompressor) ‡ Current and power inputs not included in the values above N/A Not applicable205.4 - Physical data - 30HXC + option 61 (380V-3ph-60Hz)30HXC 080 090 100 110 120 130 140 155 175 190 200 230 260 285 310 345 375Operating weight* kg 2274 2279 2302 2343 2615 2617 2702 2712 3083 3179 3873 4602 4656 4776 5477 5553 5721Refrigerant charge* kg HFC-134aCircuit A 33 33 32 31 49 51 48 54 54 70 92 115 117 132 109 96 119Circuit B 34 34 30 35 52 47 48 57 50 70 58 63 75 80 106 109 137Oil Polyolester oil CARRIER SPEC. PP 47-32Circuit A l 15 15 15 15 15 15 15 15 15 15 30 30 30 30 30 30 30Circuit B l 15 15 15 15 15 15 15 15 15 15 15 15 15 15 30 30 30Compressors** Semi-hermetic, twin-screw POWER3Size - Circuit A 39 46 46 56 56 66 80 80 80 80+ 66/56 80/56 80/80 80+/80+ 80/66 80/80 80+/80+Size - Circuit B 39 39 46 46 56 56 56 66 80 80+ 66 80 80 80+ 80/66 80/80 80+/80+Capacity control PRO-DIALOG Plus controlNo. of control steps 6 6 6 6 6 6 6 6 6 6 8 8 8 8 10 10 10Minimum step capacity % 19 19 21 19 21 19 17 19 21 21 14 14 14 14 10 10 10Evaporator Shell and tube with internally finned copper tubesNet water volume l 50 50 58 69 65 65 75 75 88 88 126 155 170 170 191 208 208Water connections Victaulic connectionsInlet/outlet in 4 4 4 5 5 5 5 5 5 5 6 6 6 6 8 8 8Drain and vent (NPT) in 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8Max. water-side operating pressure kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000Condenser Shell and tube with internally finned copper tubesNet water volume l 48 48 48 48 78 78 90 90 108 108 141 190 190 190 255 255 255Water connections Victaulic connectionsInlet/outlet in 5 5 5 5 5 5 5 5 6 6 6 8 8 8 8 8 8Drain and vent (NPT) in 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8Max. water-side operating pressure kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000* The weights shown are guidelines only. For the unit refrigerant charge please refer to the unit nameplate.** Nominal size per compressor.The compressor size is the same as its nominal cooling capacity in tons of refrigeration (1 ton = 3.517 kW).215.5 - Electrical data - 30HXC + option 6130HXC 080 090 100 110 120 130 140 155 175 190 200 230 260 285 310 345 375Power circuitNominal power supply (Un)* V-ph-Hz 380-3-60Voltage range V 342-418Control circuit supply The control circuit is supplied via the factory-installed transformerNominal operating power input* kW 56 63 69 78 82 91 103 111 123 129 142 166 189 198 223 249 261Nominal operating current drawn* A 114 123 132 146 161 178 198 215 235 257 276 315 352 386 430 469 515Total harmonic distortion*** % 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Max. operating power input** kW 87 96 105 118 130 144 159 172 187 212 223 253 281 318 344 374 424Circuit A** kW - - - - - - - - - - 144 159 187 212 172 187 212Circuit B** kW - - - - - - - - - - 79 94 94 106 172 187 212Max. operating current drawn(Un - 10%)***A 162 178 194 218 242 266 294 319 246 392 412 467 519 588 637 692 784Circuit A*** A - - - - - - - - - - 266 294 346 392 319 346 392Circuit B*** A - - - - - - - - - - 145 173 173 196 319 346 392Maximum operating current drawn(Un)***A 148 162 177 198 220 242 267 290 315 356 374 424 472 534 580 630 712Circuit A*** A - - - - - - - - - - 242 267 315 356 290 315 356Circuit B*** A - - - - - - - - - - 132 157 157 178 290 315 356Maximum starting current,standard unit (Un)†A 189 189 203 229 225 279 313 335 360 417 778 908 955 1113 1062 1112 1291Circuit A*** A - - - - - - - - - - 646 751 798 935 773 798 935Circuit B*** A - - - - - - - - - - 536 641 641 757 773 798 935Max. starting current/max. currentdraw ratio, unit1,28 1,17 1,15 1,16 1,14 1,15 1,17 1,16 1,15 1,17 2,08 2,14 2,03 2,08 1,84 1,77 1,81Max. starting current/max. currentdraw ratio, circuit A - - - - - - - - - - 2.67 2.81 2.54 2.63 2.67 2.54 2.63Max. starting current/max. currentdraw ratio, circuit B - - - - - - - - - 4,06 4,08 4,08 4,25 2,67 2,54 2,63Max. starting current - reducedcurrent start (Un)†A std std std std std std std std std std 592 667 714 836 821 871 1014Circuit A A - - - - - - - - - - 460 510 557 658 532 557 658Circuit B A - - - - - - - - - - 260 330 330 400 532 557 658Max. starting current - red. currentstart/max. current draw ratio, unitstd std std std std std std std std std 1,58 1,57 1,52 1,57 1,42 1,39 1,42Circuit A - - - - - - - - - - 1,90 1,91 1,77 1,85 1,84 1,77 1,85Circuit B - - - - - - - - - - 1,97 2,10 2,10 2,25 1,84 1,77 1,85Three-phase short circuit holdingcurrentkA 25 25 25 25 25 25 25 25 25 25 N/A N/A N/A N/A N/A N/A N/ACircuit A kA - - - - - - - - - - 25 25 25 25 25 25 25Circuit B kA - - - - - - - - - - 15 15 15 15 25 25 25Customer standby capacity, unitor circuit B, for evaporator waterpump connections‡kW 8 8 8 11 11 11 15 15 15 15 15 18 18 30 30 30 30* Based on standardised ARI conditions: Evaporator entering/leaving water temperature 12.2°C and 6.7°C. Condenser entering/leaving water temperature 29.6°C/35°C.** Power input, compressor, at unit operating limits (evaporator water entering/leaving temperature = 15°C/10°C, condenser entering/leaving water temperature =45°C/50°C) and a nominal voltage of 460 V (data given on the unit name plate).*** Maximum unit operating current at maximum unit power input. † Maximum instantaneous starting current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced starting current of the largestcompressor) ‡ Current and power inputs not included in the values above. N/A Not applicable225.6 - Electrical data - 30HXC + option 61 with high condensing temperature (options 150/150A)30HXC 080 090 100 110 120 130 140 155 175 190 200 230 260 285 310 345 375Power circuitNominal power supply (Un)* V-ph-Hz 380-3-60Voltage range V 342-418Control circuit supply The control circuit is supplied via the factory-installed transformerMax. operationg power input* kW 107 119 131 146 162 180 196 214 231 277 279 312 347 415 429 462 553Circuit A kW - - - - - - - - - - 180 196 231 277 214 231 277Circuit B kW - - - - - - - - - - 99 116 116 138 214 231 277Max. operating current drawn(Un - 10%)**A 203 225 246 275 304 337 367 400 431 517 522 582 646 776 800 862 1034Circuit A A - - - - - - - - - - 337 367 431 517 400 431 517Circuit B A - - - - - - - - - - 185 215 215 259 400 431 517Maximum operating current drawn(Un)**A 184 204 224 250 276 306 334 364 392 470 474 530 588 705 728 784 940Circuit A A - - - - - - - - - - 306 334 392 470 364 392 470Circuit B A - - - - - - - - - - 168 196 196 235 364 392 470Maximum starting current,standard unit (Un)†A 301 301 320 356 347 430 465 496 534 648 1225 1374 1443 1775 1580 1656 2013Circuit A† A - - - - - - - - - - 1050 1161 1230 1537 1192 1230 1537Circuit B† A - - - - - - - - - - 906 1017 1017 1299 1192 1230 1537Max. starting current/max.current draw ratio, unit1,54 1,40 1,37 1,36 1,33 1,35 1,30 1,28 1,25 1,36 2,48 2,41 2,26 2,49 2,04 1,94 2,11Max. starting current/max.current draw ratio, circuit A- - - - - - - - - - 3,29 3,25 2,89 3,23 3,07 2,89 3,23Max. starting current/max.current draw ratio, circuit B- - - - - - - - - 5,18 4,77 4,77 5,46 3,07 2,89 3,23Max. starting current - reducedcurrent start (Un)†A std std std std std std std std std std 799 932 1001 1196 1138 1214 1434Circuit A A - - - - - - - - - - 624 719 788 958 750 788 958Circuit B A - - - - - - - - - - 400 435 435 600 750 788 958Max.starting current - red. currentstart/max. current draw ratio, unitstd std std std std std std std std std 1,62 1,64 1,57 1,68 1,47 1,42 1,51Circuit A - - - - - - - - - - 1,96 2,01 1,85 2,01 1,93 1,85 2,01Circuit B - - - - - - - - - - 2,29 2,04 2,04 2,52 1,93 1,85 2,01Three-phase short circuit holdingcurrentkA 25 25 25 25 25 25 25 25 25 25 N/A N/A N/A N/A N/A N/A N/ACircuit A kA - - - - - - - - - - 25 25 25 25 25 25 25Circuit B kA - - - - - - - - - - 15 15 15 15 25 25 25Customer standby capacity, unitor circuit B, for evaporator waterpump connections‡kW 8 8 8 11 11 11 15 15 15 15 15 18 18 30 30 30 30* Power input, compressor, at unit operating limits (evaporator water entering/leaving temperature = 15°C/10°C, condensing temperature = 68°C) and a nominal voltageof 460 V (data given on the unit name plate).** Maximum unit operating current at maximum unit power input. † Maximum instantaneous starting current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced starting current of the largestcompressor) ‡ Current and power inputs not included in the values above N/A Not applicable5.7 - Compressor electrical data - 30HXC + option 60/61Reference Size I nom. MHA LRA LRA (Y) LRA (S) 1 cp. LRA (S) 2 cp.06NW2123S6N 39 43 67 330 104 NA NA06NW2146S7N 46 49 80 330 104 NA NA06NW2174S7N 56 61 100 405 128 175 21006NW2209S7N 66 73 120 485 153 205 25006NW2250S7N 80 88 143 580 183 245 30006NW2250S7E 80+ 97 162 685 216 285 345Legend06NA - Compressor for air-cooled unitsN - Non-economized compressorE - Economized compressorI nom. - Average current draw of the compressor at ARI conditionsMHA - Must hold amperes (maximum operating current) at 342 V (A)LRA - Locked rotor current with across-the-line startLRA (Y) - Locked rotor current at reduced current (star/delta start-up mode)LRA (S) 1 cp. - Start-up with reduced current with electronic starter (start-up duration 3 seconds max.) for one compressor per circuitLRA (S) 2 cp. - Start-up with reduced current with electronic starter (start-up duration 3 seconds max.) for two compressors per circuit235.8 - Compressor electrical data - 30HXC + option 60/61 + option 150/150AReference Size I nom. MHA LRA LRA (Y) LRA (S) 1 cp. LRA (S) 2 cp.06NA2123W6N 39 62 84 485 153 NA NA06NA2146W7N 46 73 102 580 183 NA NA06NA2174W7N 56 89 125 685 216 245 34506NA2209W7N 66 107 153 820 259 290 41006NA2250W7N 80 127 178 920 291 320 46006NA2250W7E 80+ 148 214 1175 371 405 535Legend06NA - Compressor for air-cooled unitsN - Non-economized compressorE - Economized compressorI nom. - Average current draw of the compressor at ARI conditionsMHA - Must hold amperes (maximum operating current) at 342 V (A)LRA - Locked rotor current with across-the-line startLRA (Y) - Locked rotor current at reduced current (star/delta start-up mode)LRA (S) 1 cp. - Start-up with reduced current with electronic starter (start-up duration 3 seconds max.) for one compressor per circuitLRA (S) 2 cp. - Start-up with reduced current with electronic starter (start-up duration 3 seconds max.) for two compressors per circuit6 - UNIT CHARACTERISTICS FOR 30HXC UNITS WITH VERY LOW TEMPERATURE OPTION (OPTION 6 - OUTOF CE MARKING)The 30HXC units with the very low temperature option aredirectly derived from the 30HXC models equipped with the highcondensing temperature option (option 150). Unit sizes availablewith the very low temperature option are the following: 30HXC090, 110, 130, 155, 175, 200, 230, 260, 310, 345.Their application range allows the production of glycol/watersolution down to -10°C with ethylene glycol at 35% (by weight)or down to -7°C with propylene glycol at 30% (by weight). Theprecision of these amounts is critical for correct unit operation.In addition to the ones already listed for the high condensingtemperature option (see chapter 4.4) the main modifications are:• the evaporator is equipped with reinforced thermal 38 mminsulation,• the electronic expansion valves are changed,• the use of a wide-band oil differential sensor.All technical data is the same as for the 30HXC units with option150 except for the following chapters:6.1 - Options and accessoriesThe options available for the 30HXC units equipped with the verylow temperature option are as follows: 20, 22, 60, 61, 84, 84D,84R, 92, 104A, 107, 107A, 152, 193, 194, 197, 199.6.2 - Operating range, 30HXC units with very lowtemperature option30HXC evaporator with 35% ethylene glycol °C Minimum MaximumEvaporator entering water temperature -7.2 21Evaporator leaving water temperature -10 1530HXC evaporator with 30% polypropylene glycolEvaporator entering water temperature -4.2 21Evaporator leaving water temperature -7 1530HXC condenserCondenser entering water temperature 20 50Condenser leaving water temperature 25 55Outdoor air temperature 6 40For very low temperature applications the anti-freeze solution iscritical for correct unit operation. The following amounts (byweight) are required:Evaporator leaving water, °C Ethylene glycol, % Propylene glycol, %-6 25 27-7 28 30-8 30 NA-9 33 NA-10 35 NA24Operating range 35% ethylene glycolEvaporator leaving water temperature, °CNotes1. Evaporator ∆T = 4 K max. - condenser ∆T = 5 K2. Operating range applicable for full and reduced load3. At full load with a condenser entering water temperature below 20°C, a three-way valve must be used to maintain the correct condensing temperature.LegendC Unit operating with a condensing pressure control with an analogue water control valve. For transient operating modes (start-up and part load), the unit can operate down to a condenser water temperature of 13°C.D Operation permitted, but performances is not optimized Condenser entering water temperature, °CCondenser entering water temperature, °CEvaporator leaving water temperature, °C504844201513DC-7 0 4 13 15Operating range 30% propylene glycol6.3 - Evaporator water flow (l/s) for 35% ethylene glycol30HXC Min.* (closed loop) Max.**090 8.0 15.7110 10.6 21.3130 12.4 25.1155 14.5 28.1175 15.6 33.0200 20.5 38.0230 21.0 39.7260 24.1 48.3310 29.6 62.0345 30.2 63.0* Based on a Reynolds number of 4000** Based on a water velocity of 3.6 m/sEvaporator water flow (l/s) for 30% propylene glycol30HXC Min.* (closed loop) Max.**090 11.1 15.7110 14.2 21.3130 16.7 25.1155 19.1 28.1175 21.1 33.0200 25.1 38.0230 27.4 39.7260 32.3 48.3310 40.0 62.0345 40.6 63.0256.4 - Evaporator pressure drop curve, units for very low temperatureThe evaporator is equipped with heat insulation of 38 mm thick polyurethane foam.Cooler pressure drop, 30HXC low-brine versionPure water flow rate, l/sPressure drop, kPa0,010,111010010001 10 100HXC 310 & 345HXC 260HXC 230HXC 155HXC 130HXC 110HXC 090HXC 175HXC 200 267 - APPLICATION DATA7.1 - Unit operating rangeEvaporator 30HXC Minimum MaximumEvaporator entering water temperature °C 6.8* 21Evaporator leaving water temperature °C 4** 15Condenser (water-cooled) 30HXC Minimum MaximumCondenser entering water temperature °C 20*** 45Condenser leaving water temperature °C 25 50Outside ambient operating temperature 30HXC °C 6 40* For application requiring operation at less than 6.8°C, contact Carrier for unitselection using the Carrier electronic catalog.** For application requiring operation at less than 4°C, the units require the use ofantifreeze.*** Units operating at full load and below 20°C condenser entering watertemperature require the use of a head pressure control with analogue watercontrol valves (see paragraph on head pressure control). Maximum ambient temperature: for transport and storage of the units theminimum and maximum allowable temperatures are -20°C and +70°C. It isrecommended that these temperatures are also applied for transport bycontainer.† For operation in ambient temperatures down to -18°C the unit must be equippedwith option 28.Notes1. Evaporator and condenser ∆T = 5 K2. For start-up at full load with a condenser water entering temperature below20°C, a three-way valve must be used to maintain the correct condensingtemperature3. Maximum condenser water leaving temperature 50°C (at full load)4. For low evaporator leaving temperatures <+4°C and >-6°C order option 5LegendA Standard unit operating at full load.B Standard unit operating at reduced load.C Units operating with head pressure control with analogue water controlvalve.For transient operating modes (start-up and part load) the unit can operatedown to a condenser water temperature of 13°C.Additional operating range for high condensing temperature units andnon-reversible heat pumps.Evaporator leaving water temperature, °CCondenser water entering temperature, °Cstandard full load7.2 - Minimum chilled water flowThe minimum chilled water flow is shown in the table on the nextpage. If the flow is less than this, the evaporator flow can berecirculated, as shown in the diagram. The temperature of themixture leaving the evaporator must never be less than 2.8 Klower than the chilled water entering temperature.Legend1 Evaporator2 Recirculation7.3 - Maximum chilled water flowThe maximum chilled water flow is limited by the maximumpermitted pressure drop in the evaporator. It is provided in the tableon the next page. If the flow exceeds the maximum value, twosolutions are possible:• Select a non-standard evaporator with one water pass lesswhich will allow a higher maximum water flow rate.• Bypass the evaporator as shown in the diagram to obtain ahighter temperature difference with a lower evaporator flowrate.For maximum chilled water flow rate1Legend1 Evaporator2 Bypass277.4 - Variable flow evaporatorVariable evaporator flow can be used in standard 30HXC chillers.The chillers maintain a constant leaving water temperature underall flow conditions. For this to happen, the minimum flow ratemust be higher than the minimum flow given in the table ofpermissible flow rates and must not vary by more than 10% perminute.If the flow rate changes more rapidly, the system should containa minimum of 6.5 litres of water per kW instead of 3.25 l/kW.7.5 - System minimum water volumeWhichever the system, the water loop minimum capacity is givenby the formula:Capacity = Cap (kW) x N litresApplication NNormal air conditioning 3.25Process type cooling 6.5Where Cap is the nominal system cooling capacity (kW) at thenominal operating conditions of the installation.This volume is necessary for stable operation and accuratetemperature control.It is often necessary to add a buffer water tank to the circuit in orderto achieve the required volume. The tank must itself be internallybaffled in order to ensure proper mixing of the liquid (water orbrine). Refer to the examples below.7.6 - Cooler flow rate (l/s)30HXC Min.* (closed loop) Max.**080-090 5.2 20.8100 6.5 25.9110 7.4 29.6120-130 8.3 33.4140-155 9.4 37.8175-190 11.5 45.9200 14.1 56.3230 16.3 65.2260-285 18.3 73.4310 20.9 83.7345-375 23.0 91.9* Based on a water velocity of 0.9 m/s.** Based on a water velocity of 3.6 m/s.7.7 - Condenser flow rate (l/s)30HXC Min.* Max.**Closed loop Open loop080-110 2.3 7.0 28.2120-130 3.1 9.3 37.1140-155 3.7 11.1 44.5175-190 4.3 13.0 51.9200 4.9 14.8 59.2230-285 6.7 20.1 80.4310-375 8.0 24.0 95.9* Based on a water velocity of 0.3 m/s in a closed loop and 0.9 m/s in an openloop.** Based on a water velocity of 3.6 m/s.BadBadGoodGoodNOTE: The compressor must not restart more than 6 times in anhour.287.8 - Evaporator pressure drop curve Pressure drop, kPaWater flow rate, l/sLegend1 30HXC 080-0902 30HXC 1003 30HXC 1104 30HXC 120-1305 30HXC 140-1556 30HXC 175-1907 30HXC 2008 30HXC 2309 30HXC 260-28510 30HXC 31011 30HXC 345-3757.9 - Condenser pressure drop curve Pressure drop, kPaWater flow rate, l/sNote:The dotted part of the curves corresponds to the flow values only permitted forclosed circuits.Legend1 30HXC 080-090-100-1102 30HXC 120-1303 30HXC 140-1554 30HXC 175-1905 30HXC 2006 30HXC 230-260-2857 30HXC 310-345-375101001 2 3 4 10 20 30 4040201003020085012 3456789101111010010001 2 3 4 5 10 20 30 40 50 10023420304020030040012 34 5 6 7298.1.2 - 30HXC 200-285 control box30HXC A B C D E ø HStandard080-190 (315/400A) 56 25 4 863 314 10.5Option 150/150A080-140 (315/400A) 56 25 4 863 314 10.5155-190 (630A) 68 32 6 880 307.5 12.530HXC A B C D E F G ø HStandardCircuit A200-285 (400A) 56 25 4 841 314 1183 314 10.5Circuit B200-285 (250A) 39 23.5 4 811.5 324 - - 8.5Option 150/150ACircuit A200-230 (400A) 56 25 4 841 314 1183 314 10.5260-285 (630A) 68 32 6 - - 1200 307.5 12.5Circuit B200-260 (250A) 39 23.5 4 811.5 324 - - 8.5285 (400A) 56 25 4 841 314 1183 314 10.58.1.3 - 30HXC 310-375 control boxLegenda Main disconnect switchPE Earth connectionS Power supply cable section (see table “Recommended wire sections”).30HXC A B C D E F G ø HStandardCircuit A310-375 (400A) 56 25 4 1492.6 314 1824 314 10.5Circuit B310-345 (400A) 56 25 4 1492.6 314 1824 314 10.5375 (630A) 68 32 6 1510 307.5 1841 307.5 12.5Option 150/150ACircuit A310 (400A) 56 25 4 1492.6 314 1824 314 10.5345-375 (630A) 68 32 6 1510 307.5 1841 307.5 12.5Circuit B310-375 (630A) 68 32 6 1510 307.5 1841 307.5 12.5NOTES:The 30HXC 080-190 units have only one power connectionpoint located at the main disconnect switch.Before connecting electric power cables, it is imperative to checkthe correct order of the 3 phases (L1 - L2 - L3).Non-certified drawings.Refer to the certified drawings supplied with the unit or availableon request.8 - ELECTRICAL CONNECTION8.1 - Electrical connections 30HXC units8.1.1 - 30HXC 080-190 control boxaaaaa a308.2 - Power supplyThe power supply must conform to the specification on the chillernameplate. The supply voltage must be within the range specifiedin the electrical data table. For connections refer to the wiringdiagrams.WARNING: Operation of the chiller with an improper supplyvoltage or excessive phase imbalance constitutes abuse whichwill invalidate the Carrier warranty. If the phase imbalanceexceeds 2% for voltage, or 10% for current, contact your localelectricity supply at once and ensure that the chiller is notswitched on until corrective measures have been taken.8.3 - Voltage phase imbalance (%)100 x max. deviation from average voltageAverage voltageExample:On a 400 V - 3 ph - 50 Hz supply, the individual phase voltageswere measured to be:AB = 406 V; BC = 399 V; AC = 394 VAverage voltage = (406 + 399 + 394)/3 = 1199/3= 399.7 say 400 VCalculate the maximum deviation from the 400 V average:(AB) = 406 - 400 = 6(BC) = 400 - 399 = 1(CA) = 400 - 394 = 6The maximum deviation from the average is 6 V. The greatestpercentage deviation is:100 x 6/400 = 1.5%This is less than the permissible 2% and is therefore acceptable.MotorElectrical data notes for 30HXC units:• 30HXC 080-190 units have a single power connection point; 30HXC 200-375units have two connection points.• The control box includes the following standard features:- Starter and motor protection devices for each compressor- Control devices• Field connections: All connections to the system and the electrical installations must be in fullaccordance with all applicable codes.• The Carrier 30HXC units are designed and built to ensure conformance withlocal codes.The recommendations of European standard EN 60204-1(corresponds to IEC 60204-1) (machine safety - electrical machinecomponents - part 1: general regulations) are specifically taken into account,when designing the electrical equipment.• Electrical reserves: Circuit B has disconnect switches and branch sections, designed to supply theevaporator and condenser pump power input.IMPORTANT:• Generally the recommendations of IEC 60364 are accepted as compliancewith the requirements of the installation directives. Conformance with EN60204-1 is the best means of ensuring compliance with the Machines Directiveand § 1.5.1.• Annex B of EN 60204‑1 describes the electrical characteristics used for theoperation of the machines.1. The operating environment for the 30HXC units is specified below: a. Environment* ‑ Environment as classified in IEC 60364 § 3:   - ambient temperature range: +5°C to +40°C, class AA4 - humidity range (non-condensing)*: 50% relative humidity at 40°C   90% relative humidity at 20°C   - altitude: ≤ 2000 m - indoor installation*   - presence of water: class AD2* (possibility of water droplets)   - presence of hard solids, class AE2* (no significant dust present)   - presence of corrosive and polluting substances, class AF1 (negligible)   - vibration and shock, class AG2, AH2 b. Competence of personnel, class BA4* (trained personnel - IEC 60364)2. Power supply frequency variation: ± 2 Hz.3. The neutral (N) line must not be connected directly to the unit (if necessary usea transformer).4. Overcurrent protection of the power supply conductors is not provided with theunit.5. The factory‑installed disconnect switch(es)/circuit breaker(s) is (are) of a typesuitable for power interruption in accordance with EN 60947 (corresponds toIEC 60947) .6. The units are designed for connection to TN networks (IEC 60364). For ITnetworks the earth connection must not be at the network earth. Provide a localearth, consult competent local organisations to complete the electricalinstallation.NOTE: If particular aspects of an actual installation do not conform tothe conditions described above, or if there are other conditions whichshould be considered, always contact your local Carrier representative.*   The protection level required to conform to this class is IP21B (according toreference document IEC 60529). All 30HXC units are protected to IP23C andfulfil this protection condition.318.4 - Recommended wire sectionsWire sizing is the responsibility of the installer, and depends on thecharacteristics and regulations applicable to each installation site.The following is only to be used as a guideline, and does not makeCarrier in any way liable. After wire sizing has been completed,using the certified dimensional drawing, the installer must ensureeasy connection and define any modifications necessary on site.The connections provided as standard for the field-supplied powerentry cables to the general disconnect/isolator switch are designedfor the number and type of wires, listed in the table below.The calculations are based on the maximum machine current (seeelectrical data tables).For the design of 30HXC units installed inside the building, thefollowing standardized installation methods are used, inaccordance with IEC 60364, table 52C:• No.13: perforated horizontal cable conduit,• No. 41: closed conduit.The calculation is based on PVC or XLPE insulated cables withcopper or aluminium core. The maximum temperature is 40°C.The given wire length limits the voltage drop to < 5%.IMPORTANT: Before connection of the main power cables(L1 - L2 - L3) on the terminal block, it is imperative to checkthe correct order of the 3 phases before proceeding to theconnection on then terminal block or the main disconnect/isolator switch.8.4.1 - Field control wiringIMPORTANT: Field connection of interface circuits may leadto safety risks: any control box modification must maintainequipment conformity with local regulations. Precautions mustbe taken to prevent accidental electrical contact between circuitssupplied by different sources:• The routing selection and/or conductor insulationcharacteristics must ensure dual electric insulation.• In case of accidental disconnection, conductor fixingbetween different conductors and/or in the control boxprevents any contact between the conductor ends and anactive energised part.Refer to the 30GX/HXC Pro-Dialog Plus Controls IOM and thecertified wiring diagram supplied with the unit for the field controlwirting of the following features:• Evaporator pump interlock (mandatory)• Remote on/off switch• Condenser flow switch (field-supplied)• Remote heat/cool switch• Demand limit external switch 1• Remote dual setpoint• Alarm report by circuit• Evaporator pump control• Condenser pump control• Remote setpoint reset or outside air temperature sensor reset(0-10 V)328.4.2 - Selection table of minimum and maximum wire sections - 400 V-3 ph-50 Hz30HXC Minimum wiresection (mm2)*Wire type L (m) Maximum wiresection (mm2)*Wire type L (m)080 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 205090 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 205100 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 210110 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 220120 1 x 95 XLPE Cu 180 1 x 185 XLPE Al 220130 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225140 1 x 120 XLPE Cu 185 2 x 95 XLPE Al 195155 1 x 120 XLPE Cu 185 2 x 120 XLPE Al 205175 1 x 150 XLPE Cu 190 2 x 120 XLPE Al 205190 1 x 185 XLPE Cu 190 2 x 150 XLPE Al 210200 Circuit A 1 x 95 XLPE Cu 180 1 x 185 XLPE Al 2201 x 120 XLPE Cu 225230 Circuit A 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230260 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 240 XLPE Cu 235285 Circuit A 1 x 150 XLPE Cu 190 2 x 185 XLPE Al 2702 x 120 XLPE Cu 280310 Circuit A 1 x 120 XLPE Cu 185 2 x 120 XLPE Al 2552 x 95 XLPE Cu 270345 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2652 x 95 XLPE Cu 270375 Circuit A 1 x 150 XLPE Cu 190 2 x 185 XLPE Al 2702 x 120 XLPE Cu 280200 Circuit B 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 2051 x 70 XLPE Cu 205230 Circuit B 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 2101 x 95 XLPE Cu 215260 Circuit B 1 x 95 XLPE Cu 180 1 x 150 XLPE Al 2101 x 95 XLPE Cu 215285 Circuit B 1 x 95 XLPE Cu 180 1 x 185 XLPE Al 2201 x 120 XLPE Cu 225310 Circuit B 1 x 185 XLPE Cu 190 2 x 185 XLPE Al 2701 x 240 XLPE Cu 235345 Circuit B 1 x 185 XLPE Cu 190 2 x 185 XLPE Al 2702 x 120 XLPE Cu 280375 Circuit B 1 x 240 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290* Power supply wire section (see diagrams/legend S in chapter ‘Electrical connection’).The disconnect switches are indicated by a 1.8.4.3 - Selection table of minimum and maximum wire sections 400V-3ph-50Hz + option 15030HXC Minimum wiresection (mm2)*Wire type L (m) Maximum wiresection (mm2)*Wire type L (m)080 Opt. 150 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 210090 Opt. 150 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 220100 Opt. 150 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225110 Opt. 150 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225120 Opt. 150 1 x 120 XLPE Cu 185 2 x 95 XLPE Al 195130 Opt. 150 1 x 120 XLPE Cu 185 2 x 120 XLPE Al 205140 Opt. 150 1 x 150 XLPE Cu 190 2 x 120 XLPE Al 205155 Opt. 150 1 x 185 XLPE Cu 190 2 x 150 XLPE Al 210175 Opt. 150 1 x 185 XLPE Cu 190 2 x 150 XLPE Al 210190 Opt. 150 2 x 95 XLPE Cu 170 2 x 240 XLPE Al 225200 Opt. 150 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 185 XLPE Cu 235230 Opt. 150 Circuit A 1 x 150 XLPE Cu 190 2 x 150 XLPE Al 2651 x 240 XLPE Cu 235260 Opt. 150 Circuit A 1 x 185 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290285 Opt. 150 Circuit A 1 x 240 XLPE Cu 190 2 x 240 XLPE Cu 295310 Opt. 150 Circuit A 1 x 150 XLPE Cu 190 2 x 185 XLPE Al 2702 x 120 XLPE Cu 280345 Opt. 150 Circuit A 1 x 185 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290375 Opt. 150 Circuit A 1 x 240 XLPE Cu 190 2 x 240 XLPE Cu 295200 Opt. 150 Circuit B 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 2101 x 95 XLPE Cu 215230 Opt. 150 Circuit B 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 2201 x 120 XLPE Cu 225260 Opt. 150 Circuit B 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 2201 x 120 XLPE Cu 225285 Opt. 150 Circuit B 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 185 XLPE Cu 235310 Opt. 150 Circuit B 1 x 185 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290345 Opt. 150 Circuit B 1 x 240 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290375 Opt. 150 Circuit B 2 x 95 XLPE Cu 170 2 x 240 XLPE Cu 295* Power supply wire section (see diagrams/legend S in chapter ‘Electrical connection’).The disconnect switches are indicated by a 1.338.4.4 - Selection table of minimum and maximum wire sections 460V-3ph-60Hz (option 60)30HXC Minimum wiresection (mm2)*Wire type L (m) Maximum wiresection (mm2)*Wire type L (m)080 1 x 35 XLPE Cu 140 1 x 120 PVC Al 260090 1 x 35 XLPE Cu 140 1 x 120 PVC Al 260100 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 205110 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 205120 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 210130 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 210140 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 220155 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225175 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225190 1 x 120 XLPE Cu 185 2 x 95 XLPE Al 195200 Circuit A 1 x 50 XLPE Cu 160 2 x 95 PVC Al 3101 x 150 XLPE Al 210230 Circuit A 1 x 70 XLPE Cu 170 2 x 120 PVC Al 3251 x 150 XLPE Al 2101 x 95 XLPE Cu 215260 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 240 XLPE Cu 235285 Circuit A 1 x 150 XLPE Cu 190 2 x 185 XLPE Al 2702 x 120 XLPE Cu 280310 Circuit A 1 x 120 XLPE Cu 185 2 x 120 XLPE Al 2552 x 95 XLPE Cu 270345 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2652 x 95 XLPE Cu 270375 Circuit A 1 x 150 XLPE Cu 190 2 x 185 XLPE Al 2702 x 120 XLPE Cu 280200 Circuit B 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 2051 x 70 XLPE Cu 205230 Circuit B 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 2101 x 95 XLPE Cu 215260 Circuit A 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 120 XLPE Cu 225285 Circuit A 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230310 Circuit A 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 2201 x 120 XLPE Cu 225345 Circuit A 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 120 XLPE Cu 225375 Circuit A 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230200 Circuit B 1 x 35 XLPE Cu 140 1 x 120 PVC Al 2601 x 95 XLPE Al 1951 x 70 PVC Cu 195230 Circuit B 1 x 50 XLPE Cu 160 2 x 70 PVC Al 2851 x 120 XLPE Al 2051 x 70 XLPE Cu 205260 Circuit B 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 2051 x 70 XLPE Cu 205285 Circuit B 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 2101 x 95 XLPE Cu 215310 Circuit B 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230345 Circuit B 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 185 XLPE Cu 235375 Circuit B 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 240 XLPE Cu 235* Power supply wire section (see diagram in chapter ‘Electrical connection’).348.4.5 - Selection table of minimum and maximum wire sections 460V-3ph-60Hz + option 150/150A30HXC Minimum wiresection (mm2)*Wire type L (m) Maximum wiresection (mm2)*Wire type L (m)080 1 x 50 XLPE Cu 160 1 x 150 XLPE Al 210090 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 210100 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 220110 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225120 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225130 1 x 120 XLPE Cu 185 2 x 95 XLPE Al 195140 1 x 150 XLPE Cu 190 2 x 120 XLPE Al 205155 1 x 150 XLPE Cu 190 2 x 120 XLPE Al 205175 1 x 185 XLPE Cu 190 2 x 150 XLPE Al 210190 1 x 240 XLPE Cu 190 2 x 185 XLPE Al 210200 Circuit A 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230230 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 185 XLPE Cu 235260 Circuit A 1 x 150 XLPE Cu 190 2 x 185 XLPE Al 2701 x 240 XLPE Cu 235285 Circuit A 1 x 185 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290310 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 240 XLPE Cu 235345 Circuit A 1 x 150 XLPE Cu 190 2 x 185 XLPE Al 2701 x 240 XLPE Cu 235375 Circuit A 1 x 185 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290200 Circuit B 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 2051 x 95 XLPE Cu 215230 Circuit B 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 2201 x 120 XLPE Cu 225260 Circuit B 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 2201 x 120 XLPE Cu 225285 Circuit B 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230310 Circuit B 1 x 185 XLPE Cu 190 2 x 185 XLPE Al 2702 x 120 XLPE Cu 280345 Circuit B 1 x 185 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290375 Circuit B 1 x 240 XLPE Cu 190 2 x 240 XLPE Cu 295* Power supply wire section (see diagram in chapter ‘Electrical connection’).8.4.6 - Selection table of minimum and maximum wire sections 380V-3ph-60Hz (option 61)30HXC Minimum wiresection (mm2)*Wire type L (m) Maximum wiresection (mm2)*Wire type L (m)080 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 205090 2 x 50 XLPE Cu 160 1 x 120 XLPE Al 205100 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 210110 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 210120 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 220130 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225140 1 x 120 XLPE Cu 185 1 x 240 XLPE Al 225155 1 x 120 XLPE Cu 185 2 x 95 XLPE Al 195175 1 x 120 XLPE Cu 185 2 x 120 XLPE Al 205190 1 x 150 XLPE Cu 190 2 x 120 XLPE Al 205200 Circuit A 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 2201 x 120 XLPE Cu 225230 Circuit A 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230260 Circuit A 1 x 120 XLPE Cu 185 2 x 120 XLPE Al 2551 x 185 XLPE Cu 235285 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 185 XLPE Cu 235310 Circuit A 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230345 Circuit A 1 x 120 XLPE Cu 185 2 x 120 XLPE Al 2551 x 185 XLPE Cu 235375 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 185 XLPE Cu 235200 Circuit B 1 x 50 XLPE Cu 160 1 x 120 XLPE Al 2051 x 70 XLPE Cu 205230 Circuit B 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 2101 x 95 XLPE Cu 215260 Circuit B 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 2101 x 95 XLPE Cu 215285 Circuit B 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 2201 x 150 XLPE Cu 225310 Circuit B 1 x 150 XLPE Cu 190 2 x 150 XLPE Al 2651 x 240 XLPE Cu 235345 Circuit B 1 x 150 XLPE Cu 190 2 x 185 XLPE Al 2702 x 120 XLPE Cu 280375 Circuit B 1 x 185 XLPE Cu 190 2 x 185 XLPE Al 2702 x 120 XLPE Cu 280* Power supply wire section (see diagram in chapter ‘Electrical connection’).358.4.7 - Selection table of minimum and maximum wire sections 380V-3ph-60Hz + option 150/150A30HXC Minimum wiresection (mm2)*Wire type L (m) Maximum wiresection (mm2)*Wire type L (m)080 1 x 70 XLPE Cu 170 1 x 185 XLPE Al 220090 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225100 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225110 1 x 120 XLPE Cu 185 2 x 95 XLPE Al 195120 1 x 120 XLPE Cu 185 2 x 120 XLPE Al 205130 1 x 150 XLPE Cu 190 2 x 120 XLPE Al 205140 1 x 185 XLPE Cu 190 2 x 150 XLPE Al 210155 1 x 240 XLPE Cu 190 2 x 185 XLPE Al 220175 1 x 240 XLPE Cu 190 2 x 185 XLPE Al 220190 2 x 95 XLPE Cu 170 2 x 240 XLPE Al 225200 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 240 XLPE Cu 235230 Circuit A 1 x 150 XLPE Cu 190 2 x 185 XLPE Al 2701 x 240 XLPE Cu 235260 Circuit A 1 x 240 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290285 Circuit A 1 x 240 XLPE Cu 190 2 x 240 XLPE Cu 295310 Circuit A 1 x 185 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290345 Circuit A 1 x 240 XLPE Cu 190 2 x 240 XLPE Al 2802 x 150 XLPE Cu 290375 Circuit A 1 x 240 XLPE Cu 190 2 x 240 XLPE Cu 295200 Circuit B 1 x 70 XLPE Cu 170 1 x 150 XLPE Al 2101 x 120 XLPE Cu 225230 Circuit B 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230260 Circuit A 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 2251 x 150 XLPE Cu 230285 Circuit A 1 x 120 XLPE Cu 185 2 x 150 XLPE Al 2651 x 185 XLPE Cu 235310 Circuit A 1 1 x 240 XLPE Cu 190 2 x 240 XLPE Cu 295345 Circuit A 1 2 x 95 XLPE Cu 170 2 x 240 XLPE Cu 295375 Circuit A 1 x 240 XLPE Cu 190 2 x 240 XLPE Cu 295* Power supply wire section (see diagram in chapter ‘Electrical connection’).369 - WATER CONNECTIONSATTENTION: Before carrying out any water connections installthe water box purge plugs (one plug per water box in the lowersection - supplied in the control box).For size and position of the heat exchanger water inlet and outletconnections refer to the certified dimensional drawings suppliedwith the unit.The water pipes must not transmit any radial or axial force to theheat exchangers nor any vibration.The water supply must be analysed and appropriate filtering,treatment, control devices, isolation and bleed valves and circuitsbuilt in, to prevent corrosion, fouling and deterioration of thepump fittings. Consult either a water treatment specialist orappropriate literature on the subject.9.1 - Operating precautionsThe water circuit should be designed to have the least number ofelbows and horizontal pipe runs at different levels. Below themain points to be checked for the connection:• Comply with the water inlet and outlet connections shownon the unit.• Install manual or automatic air purge valves at all high pointsin the circuit(s).• Use an expansion device to maintain pressure in the circuit(s)and install a safety valve as well as an expansion tank.• Install thermometers in both the entering and leaving waterconnections.• Install drain connections at all low points to allow the wholecircuit to be drained.• Install stop valves, close to the entering and leaving waterconnections.• Use flexible connections to reduce the transmission ofvibrations.• Insulate all pipework, after testing for leaks, both to reduceheat gains and to prevent condensation.• Cover the insulation with a vapour barrier.• Where there are particles in the fluid that could foul the heatexchanger, a screen filter should be installed ahead of thepump , or directly at the exchanger inlet in case the pump ismore than 20m away. The mesh size of the filter must be 1.2mm (see ‘Typical water circuit’ diagram).• The use of different metals on hydraulic piping could generateeletrolytic pairs and consequently corrosion. It could beneeded to add sacrificial anodes.Before the system start-up verify that the water circuits areconnected to the appropriate heat exchangers (e.g. no reversalbetween evaporator and condenser).Do not introduce any significant static or dynamic pressure intothe heat exchange circuit (with regard to the design operatingpressures).Before any start-up verify that the heat exchange fluid iscompatible with the materials and the water circuit coating.In case additives or other fluids than those recommended by Carrierare used, ensure that the fluids are not considered as a gas, and thatthey belong to class 2, as defined in directive 97/23/EC.Carrier recommendations on heat exchange fluids:1. No NH4+ ammonium ions in the water, they are very detrimentalfor copper. This is one of the most important factors for theoperating life of copper piping. A content of several tenthsof mg/l will badly corrode the copper over time.2. ClChloride ions are detrimental for copper with a risk ofperforations by corrosion by puncture. If possible keep below125 mg/l.3. SO42- sulphate ions can cause perforating corrosion, if theircontent is above 30 mg/l.4. No fluoride ions (<0.1 mg/l).5. No Fe2+ and Fe3+ ions with non negligible levels of dissolvedoxygen must be present. Dissolved iron < 5 mg/l with dissolvedoxygen < 5 mg/l.6. Dissolved silicon: silicon is an acid element of water andcan also lead to corrosion risks. Content < 1 mg/l.7. Water hardness: > 0.5 mmol/l. Values between 1 and 2.5 canbe recommended. This will facilitate scale deposit that canlimit corrosion of copper. Values that are too high can causepiping blockage over time. A total alkalimetric titre (TAC)below 100 is desirable.8. Dissolved oxygen: Any sudden change in water oxygenationconditions must be avoided. It is as detrimental to deoxygenatethe water by mixing it with inert gas as it is to over-oxygenateit by mixing it with pure oxygen. The disturbance of theoxygenation conditions encourages destabilisation of copperhydroxides and enlargement of particles.9. Electric conductivity: 10-600µS/cm10. pH: Ideal case pH neutral at 20-25°C7 < pH < 8If the water circuit must be emptied for longer than one month,the complete circuit must be placed under nitrogen charge to avoidany risk of corrosion by differential aeration.Charging and removing heat exchange fluids should be done withdevices that must be included on the water circuit by the installer.Never use the unit heat exchangers to add heat exchange fluid.9.2 - Water connectionsThis diagram shows a typical water installation.Typical water circuit diagramLegend1 Control valve2 Air vent3 Flow switch for the evaporator4 Flexible connection5 Heat exchanger6 Pressure tap1 234 567 891011127 Thermostat sleeve8 Drain9 Buffer tank10 Filter (mesh size: 1.2 mm = 20 mesh)11 Expansion tank12 Fill valve379.3 - Flow control9.3.1 - Evaporator flow switch and chilled water pumpinterlockNOTE: This is obligatory and 30HXC units:• The unit water flow switch must be energised.• The chilled water pump start-up interlock must beconnected.Failure to follow this instruction will void the Carrier guarantee.The flow switch is supplied, installed on the evaporator enteringwater pipe and preset at the factory to cut out when there isinsufficient water flow.If any adjustment is required, please refer to chapters:• 9.3.1.1 for the more recent flow switches,• 9.3.1.2 for older flow switches (orange colour).9.3.1.1 - Flow switch - reference number 00PPG000472900AIMPORTANT: To adjust the setpoint the unit must be energised,but without water flow.The default control point is 60 cm/s (0.6 m/s) for all applications.For option 6 the factory setting is 10 cm/s (0.1 m/s).Changing the setpoint is only necessary if glycol is used in thewater system (positive brine), and the correct value is 10 cm/s(0.1 m/s).If adjustment is required, the push button below must always beused for safe adjustment. This is available from the Carrierspare parts department.• Switch on the unit without water flow.• Disconnect the flow switch connector and insert the pushbutton in series with the flow switch.• Follow sequence A to F below.NOTE: The new setpoint (in cm/s) corresponds to the duration(in seconds) the push button is pressed.Control sequenceTiming OperationA Initialisation: Press the push button for longer than 1 secondB Initialisation validation: Release the button for between 1 and 5secondsC Threshold control: Press for the number of seconds that corresponds tothe required setpoint (pressing for 10 seconds sets the setpoint to 10 cm/sor 0.1 m/s)D Release for 5 secondsE Stored information feedback: The light is on for the number of secondsthat corresponds to the setpoint.F Internal control: The flow switch goes out for 5 seconds and can thenbe disconnected from the push button.Timing A B C D E FDuration, s > 1 1 to 5 3 to 67 5 5 to 65 5Do not forget to remove the push button at the end of the operationand replace the connector on the flow switch.9.3.1.2 - Flow switch - ref. No. HR12AA009EE (orange colour)If adjustment is necessary:1. Switch on the unit. Set it to constant flow (preset value).Theyellow LED is illuminated, and the output is switched forapproximately 20 seconds (power-on delay time).2. Turn the potentiometer until only one green LED isilluminated. The further the green LED is from the yellowLED, the safer the adjustment (standby capacity in case offlow or temperature fluctuations).3. After the adjustment attach the label supplied to thepotentiometer, in order to protect it against unauthorisedtampering.Terminals 34 and 35 are provided for field installation of thechilled water pump interlock (auxiliary contact for pump operationto be wired on site).Potentiometer adjustment (ref.: HR12AA009EE)Legend1 Setting potentiometer sensitivity2 Chain of LEDs - red LED lights: the unit is not adjusted - yellow LED lights: the output is switched - green LED lights: the unit is adjusted21Push button Flow switchref. No. 00PPG00473000A ref. No. 00PPG000472900A38NOTE: Before this operation we recommend draining the circuitand disconnecting the pipes to be sure that the bolts are correctlyand uniformly tightened.9.5 - Frost protection9.5.1 - Standard machineIf the chiller or the water piping is in an area where the ambienttemperature can fall below 0°C it is recommended to add anantifreeze solution to protect the unit and the water piping to atemperature of 10 K below the lowest temperature likely to bereached at the installation site. Use only antifreeze solutions,approved for heat exchanger duty. If the system is not protectedby an antifreeze solution and will not be used during the freezingweather conditions, draining of the cooler and outdoor piping ismandatory. Damage due to freezing is not covered by the warranty.IMPORTANT: Depending on the climatic conditions in your areayou must:• Add ethylene glycol with an adequate concentration to protectthe installation up to a temperature of 10 K below the lowesttemperature likely to occur at the installation site.• If the unit is not used for an extended period, it isrecommended to drain it, and as a safety precaution addethylene glycol to the heat exchanger, using the waterentering purge valve connection (a purge connection isavailable somewhere on the heat exchanger water box incase the machine is not perfectly level).At the start of the next season, refill the unit with waterand add an inhibitor.• For the installation of auxiliary equipment, the installermust comply with basic regulations, especially for minimumand maximum flow rates, which must be between the valueslisted in the operating limit table (application data).9.5.2 - Brine machine30HXC brine applications below 0°C leaving brine temperatureare not compatible with stopped situations where water flow ismaintained in the evaporator and stopped in the condenser.The water flow in the evaporator should preferably be stoppedafter unit shut down. If this is not possible, then the flow must bemaintained in the condenser too.In all cases, it is recommended to maintain the water flow in thecondenser few moments after the evaporator flow stopped to allowsafe pressure equilibrium.Special attention has to be given to the hydraulic design whenoption 152 is selected, in order to maintain the condenser floweven when the 0-10V signal asks for no-flow.9.6 - Operation of two units in master/slave modeThe control of a master/slave assembly is in the entering waterand does not require any additional sensors (standard configuration).It can also be located in the leaving water. In this case twoadditional sensors must be added on the common piping.All parameters, required for the master/slave function must beconfigured using the Service Configuration menu. All remotecontrols of the master/slave assembly (start/stop, setpoint, loadshedding etc.) are controlled by the unit configured as master andmust only be applied to the master unit.Each unit controls its own water pump. If there is only onecommon pump, in cases with variable flow, isolation valves mustbe installed on each unit. They will be activated at the openingand closing by the control of each heat pump (in this case thevalves are controlled using the dedicated water pump outputs). Seethe 30GX/HXC Pro-Dialog Plus Control IOM for a more detailedexplanation.30HXC with configuration: leaving water control9.3.2 - Condenser water flow switch (30HXC)The use of a condenser water flow switch is recommended. Theflow switch is not supplied, and must be installed on site andconnected in accordance with the wiring diagrams.The condenser water flow rate must be set to 10 l/s.9.4 - Evaporator and condenser for the 30HXC waterbox bolt tighteningThe evaporator (and condenser) are of the shell and tube typewith removable water boxes to facilitate cleaning. Re-tighteningor tightening must be done in accordance with the illustrationbelow.Water box tightening sequenceLegend1 Sequence 1: 1 2 3 4 Sequence 2: 5 6 7 8 Sequence 3: 9 10 11 122 Tightening torque Bolt size M16 - 171 - 210 Nm1 2Legend1 Master unit2 Slave unit Control boxes of the master and slave unitsWater inletWater outletWater pumps for each unit (included as standard for units with hydronicmodule) Additional sensors for leaving water control, to be connected to channel 1of the slave boards of each master and slave unit CCN communication busConnection of two additional sensors3910 - MAJOR SYSTEM COMPONENTS ANDOPERATION DATA10.1 - Geared twin screw compressor• 30HXC units use 06N geared twin screw compressors.• Nominal capacities range from 137 to 281 kW (39 to 80tons). Economized or non economized models are useddepending on the 30HXC unit size.10.1.1 - Oil filterThe 06N screw compressor has an oil filter integral in thecompressor housing. This filter is field replaceable.10.1.2. - RefrigerantThe 06N screw compressor is specially designed to be used inR-134 a system only.10.1.3 - LubricantThe 06N screw compressor is approved for use with the followinglubricant: Carrier material spec PP 47-32.10.1.4 - Oil supply solenoid valveAn oil supply solenoid valve is standard on the compressor toisolate the compressor from oil flow when the compressor is notoperating.The oil solenoid is field replaceable.10.1.5 - Suction and economizer screensTo increase the reliability of the compressor, a screen has beenincorporated as a standard feature into suction and economizerinlets of the compressor.10.1.6 - Unloading systemThe 06NW screw compressor has an unloading system that isstandard on all compressors. This unloading system consists oftwo steps of unloading that decrease the compressor capacity byrerouting partially compressed gas back to suction.10.2 - Pressure vessels10.2.1 - Evaporator30HXC chillers use a flooded evaporator. The water circulates inthe tubes and the refrigerant is on the outside in the shell. Onevessel is used to serve both refrigerant circuits. There is a centertube sheet which separates the two refrigerant circuits. The tubesare 3/4” diameter copper with an enhanced surface inside andout. There is just one water circuit, and depending on the size ofthe chiller, there may be two or three water passes.At the top of the cooler are the two suction pipes, one in eachcircuit. Each has a flange welded to it, and the compressor mountson the flange.The evaporator shell has a thermal insulation of 19 mm thickpolyurethane foam and a water drain and purge. With the very lowtemperature option this insulation is 38 mm thick.10.2.2 - Condenser and oil separator30HXC chiller use a vessel that is a combination condenser andoil separator. It is mounted below the cooler. Discharge gas leavesthe compressor and flows through an external muffler to the oilseparator, which is the upper portion of the vessel. It enters thetop of the separator where oil is removed, and then flows to thebottom portion of the vessel, where gas is condensed andsubcooled. One vessel is used to serve both refrigerant circuits.There is a center tube sheet which separates the two refrigerantcircuits. The tubes are 3/4” or 1” diameter copper with enhancedsurface inside and out. There is just one water circuit with two waterpasses.The condenser shell can have a thermal insulation of 19 mm thickpolyurethane foam and a water drain and purge.4010.3 - Electronic expansion device (EXV)The microprocessor controls the EXV through the EXV controlmodule. Inside this EXV is a linear actuator stepper motor. Highpressureliquid refrigerant enters the valve through the bottom. Aseries of calibrated slots are located inside the orifice assembly.As refrigerant passes through the orifice, the pressure drops andthe refrigerant changes to a 2-phase condition (liquid and vapour).To control refrigerant flow for different operating conditions, thesleeve moves up and down over the orifice, thereby changingeffective flow area of expansion device. The sleeve is moved bya linear stepper motor. The stepper motor moves in incrementsand is controlled directly by the processor module. As the steppermotor rotates, motion is transferred into linear movement by thelead screw. Through the stepper motor and lead screws, 1500discrete steps of motion are obtained. The large number of stepsand long stroke result in very accurate control of refrigerant flow.At initial start-up, the EXV position is at zero. After that, themicroprocessor keeps accurate track of the valve position in orderto use this information as input for the other control functions. Itdoes this by initializing the EXV’s at startup. The processor sendsout enough closing pulses to the valve to move it from fully opento fully closed, then resets the position counter to zero. From thispoint on, until the initialization, the processor counts the totalnumber of open and closed steps it has sent to each valve.10.4 - EconomizerEconomizers are installed on 30HXC 190, 285 and 375.The economizer improves both the chiller capacity and efficiency aswell as providing motor cooling. The economizers used are directexpansionplate heat exchangers.The flow of the direct-expansion plate heat exchanger circuit isadjusted by the thermostatic cooling valves.10.5 - Oil pumpsThe 30HXC screw chillers use one externally mountedpre-lubricating oil pump per circuit. This pump is operated as partot the start-up sequence.ATTENTION: The operating temperature of the coil may reach80°C. In certain temporary conditions (especially duringstart-up at low outside temperature or low condenser looptemperature) the oil pump can be reactivated.10.6 - Motor cooling valvesCompressor motor winding temperatures are controlled to theoptimum setpoint. The control accomplishes this by cycling themotor cooling solenoid valve to allow liquid refrigerant to flowacross the motor windings as needed.On units equipped with economizers with plate heat exchangers,a thermostatic valve controls the necessary refrigerant flow enteringthis heat exchanger and continuously flowing over the motorwindings. All refrigerant used for motor cooling returns to the rotorsand is compressed to the discharge pressure.10.7 - SensorsThe units use thermistors to measure the temperature, and pressuretransducers to control and regulate system operation (see 30GX/HXC - Pro-Dialog Plus Control IOM for a more detailedexplanation).4111 - MAIN OPTIONS AND ACCESSORIESOptions N° Description Advantages 30HXCMedium-temperature brinesolution5 Low temperature chilled water production from+5°C down to -6°CCovers specific applications such as ice storageand industrial processes080-375Low-temperature brine solution 6 Low temperature glycol solution productiondown to -10 °C with ethylene glycolCovers specific applications such as ice storageand industrial processes090, 110, 130, 155, 175,200, 230, 260, 310, 345*IP44C electrical protection level 20 Control box thightness reinforced Permits unit installation in more severeenvrionments080-375Tropicalisation 22 Unit control box suitable for tropical climates Reduced relative humidity in the control boxes foroperation in tropical climates (warm and humid)080-375Soft Starter 25 Electronic starter on each compressor Reduced start-up current 200-375Cu/Ni condensers 33 Condenser tubes and tubes sheets in 90-10Copper/Nickel alloyAllows applications with sea water 080-375Cu/Ni cond. + Sakaphen coatedwater boxes34A Condenser tubes and tubes sheets in 90-10Copper/Nickel alloy and Sakaphen treatmentinside water boxesAllows applications with sea water, improveddurability of water boxes080-375Unit supplied in two assembledparts51 The unit is equipped with flanges that allowdisassembly of the unit on siteFacilitates installation in plant rooms with limitedaccess080-375460-3-60 power supply 60 Power supply of 460 V-3 ph-60 Hz Permits unit connection to a power network withspecific characteristics080-375380-3-60 power supply 61 Power supply of 380 V-3 ph-60 Hz Permits unit connection to a power network withspecific characteristics080-375Evap. single pump power/controlcircuit84 Unit equipped with an electrical power andcontrol circuit for one pump evaporator sideQuick and easy installation: the control of fixedspeed pumps is embedded in the unit control080-375Evap. dual pumps power/controlcircuit84D Unit equipped with an electrical power andcontrol circuit for two pumps evaporator sideQuick and easy installation: the control of fixedspeed pumps is embedded in the unit control080-375Cond. single pump power/controlcircuit84R Unit equipped with an electrical power andcontrol circuit for one pump condenser sideQuick and easy installation: the control of fixedspeed pumps is embedded in the unit control080-375Compressor suction valve 92 Valve set for the compressor suction side toisolate it in the refrigerant circuitSimplified service and maintenance 080-375Evaporator with one pass less 100C Evaporator with one pass on the water side.Evaporator inlet and outlet on opposite sides.Easy to install, depending on site. Reducedpressure drops080-375Condenser with one pass less 102C Condenser with one pass on the water side.Condenser inlet and outlet on opposite sides.Easy to install, depending on site. Reducedpressure drops080-37521 bar evaporator 104 Reinforced evaporator for extension of themaximum water-side service pressure to 21bar (standard 10 bar)Covers applications with a high water columnevaporator side (typically high buildings)080-37521 bar condenser 104A Reinforced condenser for extension of themaximum water-side service pressure to 21bar (standard 10 bar)Covers applications with a high water columncondenser side (typically high buildings)080-375Reversed evaporator waterconnections107 Evaporator with reversed water inlet/outlet Easy installation on sites with specificrequirements080-375Reversed condenser waterconnections107A Condenser with reversed water inlet/outlet Easy installation on sites with specificrequirements080-375J-Bus gateway 148B Two-directional communication boardcomplying with JBus protocolConnects the unit by communication bus to abuilding management system080-375BacNet gateway 148C Two-directional communication boardcomplying with BacNet protocolEasy connection by communication bus to abuilding management system080-375Lon gateway 148D Two-directional communication boardcomplying with Lon Talk protocolConnects the unit by communication bus to abuilding management system080-375High condensing temperature 150 Increased condenser leaving watertemperature up to 63°C. Control of the leavingwater temperature.Allows applications with high condensingtemperature (for heat reclaim or dry coolerapplications)080-375High condensing temperature innon-reversible applications150A Operation in heat pump mode only withcondenser leaving water temperature up to63°C.Allows applications with high condensingtemperature (for heat reclaim or dry coolerapplications)080-375Control for low cond. temperature 152 Output signal (0-10 V) to control the condenserwater inlet valveSimple installation: for applications with cold waterat condenser inlet (ex. ground-source,groundwater-source, superficial water-sourceapplications) the signal permits to control a 2 or3-way valve to maintain condenser watertemperature (and so condensing pressure) atacceptable values080-375RS 485 interface with openprotocol155 Additional RS 485 communication board Communication via CCN protocol 080-375Dual relief valves on 3-way valve 194 Three-way valve upstream of the relief valveson the evaporator and the oil separatorValve replacement and inspection facilitatedwithout refrigerant loss. Comforms to Europeanstandard EN378/BGVD4080-190Compliance with Swissregulations197 Additional tests on the water heat exchangers:supply (additional of PED documents)supplementary certificates and testcertificationsConformance with Swiss regulations 080-375Compliance with Russianregulations199 EAC certification Conformance with Russian regulations 080-375Welded evaporator connection kit 266 Victaulic piping connections with welded joints Easy installation 080-375Welded condenser waterconnection kit267 Victaulic piping connections with welded joints Easy installation 080-375Flanged evaporator waterconnection kit268 Victaulic piping connections with flanged joints Easy installation 080-375Flanged condenser waterconnection kit269 Victaulic piping connections with flanged joints Easy installation 080-375230V electrical plug 284 230V AC power supply source provided withplug socket and transformer (180 VA, 0,8 Amps)Permits connection of a laptop or an electricaldevice during unit commissioning or servicing080-375* This option is not available with CE marking. For EU market, please use option 54211.1 - Compressor suction valves (option 92)These valves are designed to isolate the compressor from the restof the circuit. Discharge valves, oil valves and cooling valves areinstalled in the standard unit. A label attached to the evaporatornear each valve shows the open or closed position of the valve. Itis important to remove the cap in order to manoeuvre the valveshaft and to replace it after this operation to ensure leak-tightness.11.2 - Electric protection level of the 30HXC controlboxes to IP44C (option 20)The control boxes are leak-tight and equipped with a ventilationsystem to ensure cooling of the electrical components. The controlbox fan is controlled by a thermostat (setpoint 55°C, differential20°C). A safety thermostat switches the unit off, if the controlbox temperature exceeds 60°C.These elements can be shown on the unit and on the wiringdiagram.11.3 - Tropicalised control box for 30HXC units (option 22)The control boxes are leak-tight and equipped with heaters. Thestandard components are already treated for “all-weather”operation. Heating the air will reduce the moisture level in thecontrol box and prevent condensation.11.4 - Disassembled 30HXC units (option 51)These units are equipped with flange connections on the refrigerantpiping to permit disassembly of the units without unwelding. Thedimensional drawing for this option gives the weight of thedifferent parts. The units are fully factory-assembled, charged withoil and refrigerant and run-tested at the end of the assembly line.The refrigerant charge is then removed and replaced by a nitrogenholding charge.IMPORTANT: The oil charge remains in the unit and must notbe exposed to moisture during disassembly and reassembly. Therefrigerant charge is not supplied and must be provided on site.Please refer to the unit nameplate.11.5 - Brine units for low-temperature evaporator leavingapplications (option 5)These units are verified for compatibility between unit and specificapplication down to -6°C water temperature.They have control configuration parameters that are matched tothe application.12 - MAINTENANCE12.1 - Maintenance instructionsAir conditioning equipment must be maintained by professionaltechnicians, whilst routine checks can be carried out locally byspecialised technicians. See the standard EN 378-4.Simple preventive maintenance will allow you to get the bestperformance from your HVAC unit:• improved cooling performance• reduced power consumption• prevention of accidental component failure• prevention of major time-consuming and costlyinterventions• protection of the environmentThere are five maintenance levels for HVAC units, as defined bythe AFNOR X60-010 standard.External visual checks. These controls must be carried out:• After an intervention that is likely to affect the resistance ora change in use or change of high-pressure refrigerant, orafter a shut down of more than two years. Components thatdo not comply, must be changed. Test pressures above therespective component design pressure must not be applied.• After repair or significant modifications or significant systemor component extension.• After re-installation at another site.• After repair following a refrigerant leak.The frequency of refrigerant leak detection can vary fromonce per year for systems with less than 1% leak rate per yearto once a day for systems with a leak rate of 35% per year ormore. The frequency is in proportion with the leak rate.NOTE: High leak rates are not acceptable. The necessary stepsmust be taken to eliminate any leak detected.NOTE 2: Fixed refrigerant detectors are not leak detectors, asthey cannot locate the leak.12.2 - Soldering and weldingComponent, piping and connection soldering and weldingoperations must be carried out using the correct procedures and byqualified operators. Pressurised containers must not be subjectedto shocks, nor to large temperature variations during maintenanceand repair operations.12.3 - Refrigerant charging - adding chargeIMPORTANT: These units are designed for use with R-134a only.DO NOT USE ANY OTHER refrigerant in these units.CAUTION: When adding or removing charge, circulate waterthrough the condenser (HX) and cooler at all times to preventfreezing. Freezing damage is considered abuse and may voidthe Carrier warranty.All refrigerant removal and draining operations must be carriedout by a qualified technician and with the correct material forthe unit. Any inappropriate handling can lead to uncontrolledfluid or pressure leaks.CAUTION: DO NOT OVERCHARGE system. Over-charging resultsin higher discharge pressure with higher cooling fluid consumption,possible compressor damage and higher power consumption.4312.5 - Electrical maintenanceWhen working on the unit comply with all safety precautionsdecribed in section “Maintenance safety considerations”.• It is strongly recommended to change the fuses in the unitsevery 15000 operating hours or every 3 years.• It is recommended to verify that all electrical connectionsare tight:- after the unit has been received at the moment ofinstallation and before the first start-up,- one month after the first start-up,when the electricalcomponents have reached their nominal operatingtemperatures,- then regularly once a year.12.6 - Pressure transducers12.6.1 - Discharge pressure (circuits A and B)This input is used to measure the high side pressure of each circuitof the unit. It is used to provide the pressure to replace thedischarge pressure gauge and to control the head pressure.12.6.2 - Suction pressure (circuits A and B)This input is used to measure the pressure of the low side of theunit. It is used to provide the pressure to replace the suctionpressure gauge.12.6.3 - Oil pressure (each compressor)This input is used to measure the oil pressure of each unitcompressor. It is located on the oil pressure port of eachcompressor.12.6.4 - Economizer pressure (circuits A and B)This input is used to monitor the oil pressure differential suppliedto the compressor.12.7 - Oil charging - low oil recharging12.7.1 - Addition of oil charge to 30HXC systems1. If the 30HXC unit shuts-off repeatedly on Low oil Level, thismay be an indication of inadequate oil charge. It could alsomean simply that oil is in the process of being reclaimedfrom the low-side of the system.2. Begin by running the unit at full-load for an hour and a half.3. After running for 1-1/2 hours allow the unit to re-start and runnormally. If the Low Oil Level alarms persist, the unit has a lowoil charge. Add oil to the oil separator, using the oil chargingvalve at the bottom of the condenser.CAUTION: Do NOT add oil at any other location as improperunit operation may result.4. Make sure that the unit is not running when adding oil, asthis will make the oil charging process easier. Because thesystem is under pressure even when the unit is not running,it will be necessary to use a suitable pump (hand or electricpump) to add oil to the system.12.4 - Indication of low charge on a 30HXC systemNOTE : To check for low refrigerant charge on a 30HXC, severalfactors must be considered. A flashing liquid-line sightglass isnot necessarily an indication of inadequate charge. There aremany system conditions where a flashing sightglass occurs undernormal operation. The 30HXC metering device is designed towork properly under these conditions.1. Make sure that the circuit is running at a full-load condition.To check whether circuit A is fully loaded, follow the proceduredescribed in the Controls manual.2. It may be necessary to use the Manual Control feature toforce the circuit into a full-load condition. If this is the case,see the instructions for using the Manual Control feature inthe Controls manual.3. With the circuit running at full-load, verify that the coolerleaving fluid temperature is in the range of 6°C ± 1.5 K.4. At this condition, observe the refrigerant in the liquid linesightglass. If there is a clear sightglass, and no signs of flashing,then the circuit is adequately charged. Skip the remainingsteps.5. If the refrigerant appears to be flashing, the circuit is probablylow on charge. Verify this by checking the EXV position (see30GX/HXC Pro-Dialog Plus Controls IOM).6. If the opening position of the EXV is greater than 60%, andif the liquid-line sightglass is flashing, then the circuit is lowon charge. Follow the procedure for adding charge.12.4.1 - To add charge to the 30HXC systems1. Make sure that the unit is running at full-load, and that thecooler leaving fluid temperature is in the range of 5.6 to7.8°C.2. At these operating conditions, check the liquid-line sightglass.If there is a clear sightglass, then the unit has sufficientcharge. If the sightglass is flashing, then check the EXVPercent Open. If this is greater than 60%, then begin addingcharge.NOTE: A flashing liquid-line sightglass at operating conditionsother than those mentioned above is not necessarily an indicationof low refrigerant charge.3. Add 2.5 kg of liquid charge into the evaporator using thecharging valve located on the top of the evaporator.4. Observe the EXV Percent Open value. The EXV shouldbegin closing as charge is being added. Allow the unit tostabilize. If the EXV Percent Open remains above 60%, andthere are still bubbles in the sightglass, add an additional 2.5kg of liquid charge.5. Allow the unit to stabilize, and again check the EXV PercentOpen. Continue adding 2.5 kg of liquid refrigerant chargeat a time, and allow the unit to stabilize before checking theEXV position.6. When the EXV Percent Open is in the range of 40-60%, checkthe liquid line sightglass. Slowly add enough additional liquidcharge to ensure a clear sightglass. This should be doneslowly to avoid overcharging the unit.7. Verify adequate charge by continuing to run at full-load with6°C ± 1.5 K evaporator leaving fluid temperature. Checkthat the refrigerant is not flashing in the liquid-line sightglass.The EXV Percent Open should be between 40 and 60%. Thecooler level indicator should be in the range of 1.5 - 2.5.445. Using a suitable pump, add 2 litres of Polyolester oil to thesystem (CARRIER SPEC: PP47-32). Make sure that the oillevel safety switch is NOT jumpered, and allow the unit tore-start and run normally.6. If low oil level problems persist, add another 1 or 2 litres ofoil. If it is necessary to add more than 4 litres of oil to thesystem, then contact your Carrier distributor servicedepartment.CAUTION: When transferring the refrigerant charge to astorage unit, oil may be carried along when the unit is notoperating. Reuse first of all the amount of refrigerant transferred.After draining the oil, only recharge the amount drained (anexcess oil charge may impair correct unit operation).If an oil draining or recovery operation becomes necessary, thefluid transfer must be made using mobile containers.12.8 - Integral oil filter changeAn integral oil filter in the 06N screw compressor is specified toprovide a high level of filtration (3 µ) required for long bearinglife. As system cleanliness is critical to reliable system operation,there is also a prefilter (7 µ) in the oil line at the oil separator outlet.The replacement integral oil filter element part number is:Carrier part number (including filter and O-ring): 06NA 660016S.12.9 - Filter change-out scheduleThe filter should be checked after the first 1000 hours of operation,and every subsequent 4000 hours. The filter should be replaced atany time when the pressure differential across the filter exceeds2.1 bar.The pressure drop across the filter can be determined by measuringthe pressure at the filter service port and the oil pressure port. Thedifference in these two pressures will be the pressure drop acrossthe filter, check valve, and solenoid valve. The pressure drop acrossthe check valve and solenoid valve is approximately 0.4 bar, whichshould be subtracted from the two oil pressure measurements togive the oil filter pressure drop. The oil filter pressure drop shouldbe checked after any occasion that the compressor is shut downon a low oil pressure safety.12.10 - Filter change-out procedureThe following steps outline the proper method of changing theintegral oil filter.1. Shutdown and lockout the compressor.2. Manually force the operation of the oil solenoid valve, in orderto press the internal valve shutter onto its seat.3. Close the oil filter service valve. Bleed pressure from thefilter cavity through the filter service port.4. Remove the oil filter plug. Remove the old oil filter.5. Prior to installing the new oil filter, “grease” the o-ring withoil. Install the filter and replace the plug.Before closing up the lube oil system, take the opportunityto replace the prefilter, as well.6. When complete, evacuate the filter cavity through the filterservice port. Open the filter service valve. Remove anycompressor lockout devices, the compressor is ready to returnto operation.12.11 - Compressor replacement12.11.1 - Compressor rotation controlCorrect compressor rotation is one of the most critical applicationconsiderations. Reverse rotation, even for a very short duration,damages the compressor.The reverse rotation protection scheme must be capable ofdetermining the direction of rotation and stopping the compressorwithin 300 milliseconds. Reverse rotation is most likely to occurwhenever the wiring to the compressor terminals is disturbed.To minimize the opportunity for reverse rotation, the followingprocedure must be applied. Rewire the power cables to thecompressor terminal pin as originally wired.For replacement of the compressor, a low pressure switch isincluded with the compressor. This low pressure switch shouldbe temporarily installed as a hard safety on the high pressure partof the compressor. The purpose of this switch is to protect thecompressor against any wiring errors at the compressor terminalpin. The electrical contact of the switch would be wired in serieswith the high pressure switch. The switch will remain in placeuntil the compressor has been started and direction of rotationhas been verified; at this point, the switch will be removed.The switch that has been selected for detecting reverse rotationis Carrier part number HK01CB001. It is available as part of the“Compressor installation package” (part No. 06NA 660 013).This switch opens the contacts when the pressure falls below 6.8kPa absolute. The switch is a manual reset type that can be resetafter the pressure has once again risen above 69 kPa relative. It iscritical that the switch be a manual reset type to preclude thecompressor from short cycling in the reverse direction.4512.11.2 - EXV troubleshooting procedureFollow steps below to diagnose and correct EXV problems.Check EXV motor operation first (see procedure in the 30GX/HXC Pro-Dialog Plus Controls IOM). You should be able to feelthe actuator moving by placing your hand on the EXV. You shouldfeel a hard knocking come from the actuator when it reaches thetop of its stroke (can be heard if surroundings are relatively quiet).The actuator should knock when it reaches the bottom of its stroke.If it is believed that the valve is not working properly, contactyour Carrier service department for further checks on:• output signals on EXV module• wire connections (continuity and tight connection at all pinterminals)• resistance of the EXV motor windings.12.12 - Corrosion controlAll metallic parts of the unit (chassis, casing panels, control boxes,heat exchangers etc.) are protected against corrosion by a coatingof powder or liquid paint. To prevent the risk of blisteringcorrosion that can appear when moisture penetrates under theprotective coatings, it is necessary to carry out periodic checksof the coating (paint) condition.4613 - START-UP CHECKLIST FOR 30HXC LIQUID CHILLERS (USE FOR JOB FILE)Preliminary informationJob name:...............................................................................................................................................................................................Location:................................................................................................................................................................................................Installing contractor:.............................................................................................................................................................................Distributor:............................................................................................................................................................................................Start-up performed by:.........................................................................................................................................................................EquipmentModel: ............................................................................................ Serial number............................................................................CompressorsCircuit A Circuit B1. Model number.......................................................................... 1. Model number ......................................................................Serial number ........................................................................... Serial number........................................................................Motor number .......................................................................... Motor number.......................................................................2. Model number.......................................................................... 2. Model number ......................................................................Serial number ........................................................................... Serial number........................................................................Motor number .......................................................................... Motor number.......................................................................CoolerModel number............................................................................... Manufactured by ......................................................................Serial number................................................................................ Date ............................................................................................Condenser (30HXC)Model number............................................................................... Manufactured by ......................................................................Serial number................................................................................ Date ............................................................................................Air handling equipmentManufacturer ........................................................................................................................................................................................Model number............................................................................... Serial number............................................................................Additional air handling units and accessories....................................................................................................................................................................................................................................................................................................................................................Preliminary equipment checkIs there any shipping damage?.................................................... If so, where?................................................................................................................................................................................................................................................................................................Will this damage prevent unit start-up?............................................................................................................................................. Unit is level in its installation Power supply agrees with the unit nameplate Electrical circuit wiring has been sized and installed properly Unit ground wire has been connected Electrical circuit protection has been sized and installed properly All terminals are tight All cables and thermistors have been inspected for crossed wires All plug assemblies are tightCheck air handling systems All air handlers are operating All chilled water valves are open All fluid piping is connected properly All air has been vented from the system Chilled water pump (CWP) is operating with the correct rotation. CWP amperage: Rated: ........... Actual: ...........47Check condenser system All condenser water valves are open All condenser piping is connected properly All air has been vented from the system Condenser water pump (CWP) is operating with the correct rotation.Condenser water pump amperage: Rated: .…….. Actual: ………Unit start-up CWP starter has been properly interlocked with the chiller Oil level is correct All discharge and liquid valves are open All suction valves are open, if equipped All oil line valves and economizer discharge bubbler valves (if equipped) are open Unit has been leak checked (including fittings) Locate, repair, and report any refrigerant leaks...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Check voltage imbalance: AB ................ AC................. BC..................Average voltage = ................................... (see installation instructions)Maximum deviation = ............................ (see installation instructions)Voltage imbalance = ............................... (see installation instructions) Voltage imbalance is less than 2%WARNING: Do not start chiller if voltage imbalance is greater than 2%. Contact local power company for assistance. All incoming power voltage is within rated voltage rangeCheck cooler water loopWater loop volume = .............................. (litres)Calculated volume = ............................... (litres)3.25 litres/nominal kW capacity for air conditioning6.5 litres/nominal kW capacity for process cooling Proper loop volume established Proper loop corrosion inhibitor included.........litres of........................... Proper loop freeze protection included (if required)................. litres of.............................. Piping includes electric heater tape, if exposed to the outside Inlet piping to cooler includes a 20 mesh strainer with a mesh size of 1.2 mmCheck pressure drop across the coolerEntering cooler = .................................... (kPa)Leaving cooler = ..................................... (kPa)(Leaving - entering) = ............................ (kPa)WARNING: Plot cooler pressure drop on performance data chart (in product data literature) to determine total litres per second(l/s) and find unit’s minimum flow rate.Total l/s = .................................................l/s / nominal kW = ................................... Total l/s is greater than unit’s minimum flow rate Total l/s meets job specified requirement of...................................... (l/s)Check condenser water loop Proper loop corrosion inhibitor included.........litres of........................... Inlet piping to condenser includes a 20 mesh strainer with a mesh size of 1.2 mm48Check pressure drop across the condenserEntering condenser = ............................. (kPa)Leaving condenser = .............................. (kPa)(Leaving - entering) = ............................ (kPa)WARNING: Plot condenser pressure drop on performance data chart (in product data literature) to determine total litres persecond (l/s) and find unit’s minimum flow rate.Total l/s = .................................................l/s / nominal kW = .................................. Total l/s is greater than unit’s minimum flow rate Total l/s meets job specified requirement of...................................... (l/s)Perform TEST function (indicate positive result):WARNING: Once power is supplied to the unit, check the display for any alarms, such as phase reversal. Follow the TEST functioninstructions in the Controls and Troubleshooting literature (follow the procedure in the Controls IOM).Cooler fluid select......................................................................... External reset sensor................................................................Minimum load select.................................................................... Cooler pump interlock .............................................................Loading sequence select .............................................................. Cooler pump control ................................................................Lead/lag sequence select.............................................................. Condenser pump control*........................................................Head pressure control.................................................................. Condenser flow switch*............................................................Motormaster select*..................................................................... Condenser water sensors* .......................................................Water valve type* ......................................................................... *If installedTo start the chillerWARNING: Be sure that all service valves are open, and all pumps are on before attempting to start this machine. Once all checkshave been made, move the switch to “LOCAL” or “REMOTE” from “OFF”. Unit starts and operates properlyTemperatures and pressuresWARNING: Once the machine has been operating for a while and the temperatures and pressures have stabilized, record thefollowing:Cooler EWT.................................................................................. Condenser EWT .......................................................................Cooler LWT................................................................................... Condenser LWT........................................................................Circuit A oil pressure ................................................................... Circuit B oil pressure................................................................Circuit A suction pressure ........................................................... Circuit B suction pressure........................................................Circuit A discharge temperature................................................. Circuit B suction temperature .................................................Circuit A suction temperature..................................................... Circuit B discharge pressure ....................................................Circuit A discharge pressure........................................................ Circuit B discharge temperature .............................................Circuit A liquid line temperature................................................ Circuit B liquid line temperature ............................................NOTE FOR OPTION 51:The pouch supplied with the unit contains the label indicating the refrigerant used and describing the procedure required underthe Kyoto Protocol F-Gas Regulation:• Attach this label to the machine.• Follow and observe the procedure described.Order No: 13050, 01.2017 - Supersedes order No: 13050, 05.2016. Manufacturer: Carrier SCS, Montluel, France.Manufacturer reserves the right to change any product specifications without notice. Printed in the European Union.

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