Water-Cooled Screw Chillers Water-sourced Screw Heat
S E L E C T I O N P R O D U I TMulti Tiering: Entry and premiumefficiency Available for cooling (30XW) orheating (30XWH) operation Wide operating envelope: down to-12 C chilled liquid temperature, up to 63 C hot water temperature Compactness: less than 1.2 m widthup to 1600 kWWater-Cooled Screw ChillersWater-sourced screw heat pumps30XW/30XW-P30XWH/30XWHPOriginal document
CONTENTSIntroduction. 3Customer Benefits. 3Technical insights. 4Options. 6Physical data, standard units. 7Electrical data, standard units. 9Physical data, units for high condensing temperatures. 10Electrical data, units for high condensing temperatures. 12Physical data, low-temperature units. 13Electrical data, low-temperature units. 13Part load performances. 14Sound spectrum. 15Operating limits and operating ranges. 17Evaporator pressure drop curves. 18Condenser pressure drop curves. 18Dimensions/clearances. 19Specification Guide. 222
30XW- 30XWHNominal cooling capacity 273-1756 kWNominal heating capacity 317-1989 kWIntroductionThe 30XW liquid chillers are the premium solution forindustrial and commercial applications where installers,consultants and building owners require optimal performances and maximum quality.The 30XW liquid chillers are designed to meet current andfuture requirements in terms of energy efficiency,flexibility of use and compactness. They use the mostreliable technologies available today:-- Twin-rotor screw compressors with a variable capacityvalve-- Refrigerant R134a-- Touch Pilot control system-- Flooded heat exchangers that are mechanically cleanableTo meet to all environmental and economic requirements,the 30XW is available in two efficiency classes:-- Entry-level efficiency 30XW units that offer anoptimised balance of technical and economical aspects,-- Premium-efficiency 30XW-P units that offer unequalledenergy efficiency to satisfy the most stringent demandsof building owners wanting to reduce operating costs tothe minimum.The 30XW Aquaforce range is also split into two versions:-- 30XW for air conditioning and refrigeration applications-- 30XWH for heating applicationsAs standard, the unit can provide an evaporator leavingtemperature down to 3,3 C (-12 C optional), and whenoperating as a heat pump, it can deliver up to 50 C (63 Coptional) on the condenser side.Customer BenefitsLow energy consumption------Eurovent energy efficiency class “A”EER of up to 5,9 and ESEER up to 6,8GROSS-EER up to 6,1 and GROSS-ESEER up to 7,9The high energy efficiency is reached through:Twin-rotor screw compressor equipped with a highefficiency motor and a variable capacity valve that permitsexact matching of the cooling capacity to the load.-- Flooded multi-pipe heat exchangers for increased heatexchange efficiency.-- Electronic expansion device permitting operation at alower condensing pressure and improved utilisation ofthe evaporator heat exchange surface.-- Economizer system with electronic expansion device forincreased cooling capacity (30XW-P).Low operating sound levels Standard unit features include:-- Silencers on the compressors discharge line.-- Silencers on the economiser return line.-- Acoustic insulation on the components that are mostsubjected to radiated noise.-- Option 257 further reduces the global unit sound level.Easy and fast installation Compact design-- The 30XW units are designed to offer the most compactdimensions on the market.-- With a width of approximately 1 m up to 1600 kW theunits can pass through standard door openings and onlyrequire minimum floor space in the plant room.Compact, accessible unit - side view - sizes up to1600 KW Simplified electrical connections-- Main disconnect switch with high trip capacity-- Transformer to supply the integrated control circuit(400/24 V) Simplified hydronic connections-- Victaulic connections on the evaporator and condenser-- Practical reference marks for entering and leaving waterconnections-- Possibility to reverse the heat exchanger water inlet andoutlet at the factory-- Possibilty to modify the number of heat exchanger passes Fast commissioning-- Systematic factory operation test before shipment-- Quick-test function for step-by-step verification of theinstruments, expansion devices and compressors.3
Environmental care R-134a refrigerant-- HFC refrigerant with zero ozone depletion potential Leak-tight refrigerant circuit-- Reduction of leaks as no capillary tubes and flareconnections are used-- Verification of pressure transducers and temperaturesensors without transferring refrigerant charge-- Discharge line shut-off valve and liquid line servicevalve for simplified maintenance.Technical insightsTouch Pilot ControlTouch Pilot control, 5” user interfaceHigh reliability and easy servicing The 30XW units offer increased global performance aswell as Carrier’s acclaimed product quality and reliability. Major components are selected and tested to minimizefailures possibility, as well as many design choices havebeen taken in this perspective. Screw compressors-- Industrial-type screw compressors with oversized bearingsand motor cooled by suction gas.-- All compressor components are easily accessible on siteminimising down-time. Refrigerant circuit-- Two independent refrigerant circuits (from 1000 kWupwards); the second one automatically takes over, ifthe first one develops a fault, maintaining partial coolingunder all circumstances. Evaporator-- Electronic paddle-free flow switch. Auto-setting accordingto cooler size and fluid type. Auto-adaptive control-- Control algorithm prevents excessive compressor cycling(Carrier patent)-- Automatic compressor unloading in case of abnormallyhigh condensing pressure. Exceptional endurance tests-- Partnerships with specialised laboratories and use oflimit simulation tools (finite element calculation) for thedesign of critical components.-- Transport simulation test in the laboratory on a vibratingtable and then on an endurance circuit (based on amilitary standard). New innovative smart control features:-- An intuitive and user-friendly, coloured, 5'' interface(7" optional)-- Direct access to the unit's technical drawings and themain service documents-- Screen-shots with coincisive and clear information inlocal languages-- Complete menu, customised for different users (enduser, service personnel and Carrier-factory technicians)-- Easy access to the controller box with inclined touchscreen mounting to ensure legibility under any lightingconditions-- Safe operation and unit setting: password protectionensures that unauthorised people cannot modify anyadvanced parameters-- Simple and "smart" intelligence uses data collectionfrom the constant monitoring of all machine parametersto optimise unit operation. Energy management:-- Internal time schedule clock controls chiller on/off timesand operation at a second set-point-- The DCT (Data Collection Tool) records the alarmshistory to simplify and facilitate service operations.Remote Management (Standard) Units with Touch Pilot control can be easily accessed fromthe internet, using a PC with an Ethernet connection. Thismakes remote control quick and easy and offers significantadvantages for service operations. The 30XW also communicates with other buildingmanagement systems via optional communicationgateways. The 30XW is equipped with an RS485 serial port thatoffers multiple remote control, monitoring and diagnosticpossibilities. Carrier offers a vast choice of controlproducts, specially designed to control, manage andsupervise the operation of an air conditioning system.Please consult your Carrier representative for moreinformation.4
The following commands/visualisations are possible fromremote connection:-- Condenser pumps control: a digital input allowsverification of condenser water flow (the flow switchmust be supplied by the installer)-- Start/stop of the machine-- Dual set-point management: through a dedicatedcontact is possible to activate a second set-point(example: unoccupied mode)-- Demand limit setting: to limit the maximum chillercapacity to a predefined value-- Operation visualization: indication if the unit isoperating or if it's in stand-by (no cooling load)-- alarm visualization.06T screw compressorRemote management (EMM option) The Energy Management Module offers extended remotecontrol possibilities:-- Room temperature: permits set-point reset based on thebuilding indoor air temperature (with Carrier thermostat)-- Set point reset: ensures reset of the cooling set-pointbased on a 4-20 mA or 0-10 V signal-- Demand limit: permits limitation of the maximumchiller power or current based on a 0-10 V signal-- Demand limit 1 and 2: closing of these contacts limitsthe maximum chiller power or current to two predefinedvalues-- User safety: this contact can be used for any customersafety loop; opening of the contact generates a specificalarm-- Ice storage end: when ice storage has finished, this inputpermits return to the second set-point (unoccupiedmode)-- Time schedule override: closing of this contact cancelsthe time schedule effects-- Out of service: this signal indicates that the chiller iscompletely out of service-- Chiller capacity: this analogue output (0-10 V) gives animmediate indication of the chiller capacity-- Alert indication: this volt-free contact indicates thenecessity to carry out a maintenance operation or thepresence of a minor fault.The new generation of the Carrier 06T screw compressorsbenefits from Carrier’s long experience in the developmentof twin-rotor screw compressors. The compressor isequipped with bearings with oversized rollers, oil pressurelubricated for reliable and durable operation, even atmaximum load.A variable control valve controlled by the oil pressurepermits infinitely variable cooling capacity. This systemallows optimal adjustment of the compressor coolingcapacity and ensures exceptionally high stability of thechilled water leaving temperature.Among the other advantages: if a fault occurs e.g. if thecondenser is fouled or at very high water temperature, thecompressor does not switch off, but continues operationwith a reduced capacity (unloaded mode).The silencer in the discharge line considerably reducesdischarge gas pulsations for much quieter operation.The condenser includes an oil separator that minimisesthe amount of oil in circulation in the refrigerant circuitand re-directs it to the compressor function.5
OptionsOptionsDescription5Low-temperature brine solution6Light-brine solution, down to -3 C8Unit supplied in two assembled parts51Master/slave operation58Single power connection pointNo disconnect switch, but short circuitprotection8182AEvaporator pump electrical power /control circuitEvaporator dual pumps electrical power /control circuitCondenser pump electrical power /control circuitCondenser insulation84Service valve set92Evaporator with one passReversed evaporator water connections100C Evaporator with one pass on the water side. Evaporator inletand outlet on opposite sides.102C Condenser with one pass on the water side. Condenserinlet and outlet on opposite sides.104Reinforced evaporator for extension of the maximumwater-side service pressure to 21 bar (standard 10 bar)104A Reinforced condenser for extension of the maximumwater-side service pressure to 21 bar (standard 10 bar)107Evaporator with reversed water inlet/outletReversed condenser water connections107A Condenser with reversed water inlet/outletJBus gateway148B Two-directional communication board complying with JBusprotocol148D Two-directional communication board complying with LonTalk protocol149Two-directional high-speed communication using BACnetprotocol over Ethernet network (IP)Condenser with one pass21 bar evaporator21 bar condenserLON gatewayBacnet over IP gateway84D84R86Implementation of new algorithms of control and evaporatorredesign to allow chilled brine solution production down to-6 C when ethylene glycol is used (-3 C with propyleneglycol)Implementation of new algorithms of control and evaporatorredesign to allow chilled brine solution production down to-12 C when ethylene glycol is used (-8 C with propyleneglycol)Implementation of new algorithms of control to allow chilledbrine solution production down to -3 C when ethylene glycolis used (0 C with propylene glycol)The unit is equipped with flanges that allow disassembly ofthe unit on siteUnit equipped with supplementary water outlet temperaturesensor kit to be field-installed allowing master/slaveoperation of two units connected in parallelUnit power connection via one main supply connectionUnit without disconnect switch, but with short-circuitprotection deviceUnit equipped with an electrical power and control circuit forone pump evaporator sideUnit equipped with an electrical power and control circuit fortwo pumps evaporator sideUnit equipped with an electrical power and control circuit forone pump condenser sideThermal condenser insulationLiquid line valve (evaporator inlet) and compressor suctionline valveHigh condensing temperature150Condensing temperature limitation150B Limitation of the maximum condenser leaving watertemperature to 45 CControl for low condensing temperaturesystems152Output signal (0-10 V) to control the condenser water inletvalveEnergy Management Module EMM156Control board with additional inputs/outputs. See EnergyManagement Module option chapterTouch Pilot control, 7” user interfaceCompliance with Australian regulationsLow noise levelWelded evaporator water connection kitWelded condenser water connection kitFlanged evaporator water connection kitFlanged condenser water connection kitThermal compressor insulation158A Touch Pilot control supplied with a 7 inch colour touchscreen user interface1590-10 V signal to report any refrigerant leakage in the unitdirectly on the controlller (the leak detector itself must besupplied by the customer)197Additional tests on the water heat exchangers: supply(additional of PED documents) supplementary certificatesand test certifications200Unit approved to Australian code257Evaporator sound insulation266Victaulic piping connections with welded joints267Victaulic piping connections with welded joints268Victaulic piping connections with flanged joints269Victaulic piping connections with flanged joints271The compressor is covered with a thermal insulation layer230V electrical plug284Carrier Connect link (BSS regions only)298Leak detectionCompliance with Swiss regulations6No.Medium-temperature brine solutionOptimized compressor for operation at high condensingtemperature230V AC power supply source provided with plug socketand transformer (180 VA, 0,8 Amps)3G router boardNOTE 1: require option 149NOTE 2: when more than one machine is installed on site,only one of them shall be equipped with option 298 while allof them must be equipped with option 149NOTE 3: if a CARRIER-PSM is on site, option 298 shall beintegrated in the PSM while option 149 is still mandatory foreach single unit.AdvantagesUse for 30XW rangeCovers specific applications such as icestorage and industrial processesOnly sizes512/562/1012/1154Covers specific applications such as icestorage and industrial processesOnly sizes512/562/1012/1154Matches with most application requirements forground-sourced heat pumps and fits with manyindustrial processes requirementsFacilitates installation in plant rooms withlimited accessOptimised operation of two chillers connectedin parallel with operating time equalisation254-1762Quick and easy installationPermits an external electrical disconnectsystem for the unit (field-supplied), whileensuring unit short circuit protectionQuick and easy installation: the control of fixedspeed pumps is embedded in the unit controlQuick and easy installation: the control of fixedspeed pumps is embedded in the unit controlQuick and easy installation: the control of fixedspeed pumps is embedded in the unit controlMinimizes thermal dispersions condenser side(key option for heat pump or heat recoveryapplications) and allows compliancy withspecial installation criteria (hot parts insulated)Allow isolation of various refrigerant circuitcomponents for simplified service andmaintenanceEasy to install, depending on site. Reducedpressure dropsEasy to install, depending on site. Reducedpressure dropsCovers applications with a high water columnevaporator side (typically high buildings)Covers applications with a high water columncondenser side (typically high buildings)Easy installation on sites with specificrequirementsEasy installation on sites with specificrequirementsConnects the unit by communication bus to abuilding management systemConnects the unit by communication bus to abuilding management systemEasy and high-speed connection by ethernetline to a building management system. Allowsaccess to multiple unit parametersIncreased condenser leaving watertemperature up to 63 C. Allows applicationswith high condensing temperature (heatpumps, installations with not generously sizeddry-coolers or more generally, installations withdry-coolers in hot climate). NOTE: to ensurecontrol of the condenser leaving watertemperature, this option must be fitted with30XWH units.Reduced maximum power input and currentabsorption: power cables and protectionelements can therefore be downsizedSimple installation: for applications with coldwater at 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 valuesExtended remote control capabilities (Set-pointreset, ice storage end, demand limits, boiler on/off command.)Enhanced ease of use1002-1762254-1762Immediate customer notification of refrigerantlosses to the atmosphere, allowing timelycorrective actionsConformance with Swiss regulations254-1762Conformance with Australian regulations3 dB(A) quiter than standard unitEasy installationEasy installationEasy installationEasy installationPrevents air humidity to condensate on thecompressor surfacePermits connection of a laptop or an electricaldevice during unit commissioning or servicingEnabler for Carrier Connect service 762254-1762Only sizes1612/1652/1702/1762254-1762254-1252, 1314254-1252, 1314254-1252, 4-1762
Physical data, standard unitsStandard-efficiency units30XW--/30XWH254 304 354 402 452 552 602Air conditioning application as per EN14511-3:2013† - standard unitCondition 1Nominal cooling capacitykW273 307 359 459 473 532 538ESEERkW/kW5.67 5.58 5.58 5.75 5.77 5.78 5.66EERkW/kW5.32 5.30 5.24 5.21 5.35 5.21 5.17Eurovent class coolingAAAAAAAAir conditioning application †† - standard unitCondition 1Nominal cooling capacitykW273 308 360 461 474 534 539ESEERkW/kW6.18 6.09 6.14 6.28 6.29 6.46 6.33EERkW/kW5.54 5.52 5.48 5.42 5.57 5.46 5.43Heating application as per EN14511-3:2013† - standard unit6527028028521002 1052 1154 1252 1352 1452 1552 1652 36.655.661021 1066 1146 1262 1349 1461 1557 1664 17397.36 7.56 7.49 7.69 7.46 7.42 7.29 7.58 7.595.56 5.53 5.64 5.97 5.82 5.71 5.67 5.96 6.00Nominal heating capacitykWCOPkW/kWEurovent class heatingHeating application †† - standard unitCondition 2Nominal heating capacitykWCOPkW/kWSound levels - standard unitSound power level*dB(A)Sound pressure level at 1 m**dB(A)Sound levels - standard unit option 257***Sound power level*dB(A)Sound pressure level at 1 m**dB(A)Dimensions - standard unitLengthmmWidthmmHeightmmOperating weight****kgCompressorsCircuit ACircuit BRefrigerant**** - standard unitCircuit AkgCircuit BkgGlobal Warming Potential (GWP)Condition 2Tonnes of equivalent CO2 of greatestcircuitCapacity controlMinimum capcityEvaporatorWater volumeWater connections (Victaulic)Drain and vent connections (NPT)Max. water-side operating pressureCondenserWater volumeWater connections (Victaulic)Drain and vent connections (NPT)Max. water-side operating 134.49A8874.46A9674.64A1138 1190 1320 1384 1481 1612 1717 1891 19694.48 4.42 4.54 4.73 4.57 4.46 4.41 4.67 706294.787484.788104.738834.739644.931134 1186 1314 1380 1476 1606 1710 1884 19624.76 4.74 4.89 5.02 4.88 4.81 4.80 5.10 809980998099802724 2724 2724 2741 2741 2741 2741928 928 928 936 936 936 9361567 1567 1567 1692 1692 1692 16922017 2036 2072 2575 2575 2613 2644Semi-hermetic 06T screw compressors, 50 32Touch Pilot, electronic expansion valves (EXV)15151515151515Multi-pipe flooded type5056617070707055555553/83/83/83/83/83/83/81000 1000 1000 1000 1000 1000 1000Multi-pipe flooded type5555557676767655555553/83/83/83/83/83/83/81000 1000 1000 1000 1000 1000 1000† Eurovent-certified performances in accordance with standard EN14511-3:2013.† † Gross performances, not in accordance with EN14511-3:2013. These performances do not take into account the correction for the proportional heating capacity and power input generated by thewater pump to overcome the internal pressure drop in the heat exchanger.Condition 1 : Cooling mode conditions, evaporator water entering/leaving temperature 12 C/7 C, condenser water entering/leaving temperature 30 C/35 C, evaporator fouling factor 0 m².K/W.Condition 2: Cooling mode conditions, condenser water entering/leaving temperature 40 C/45 C, evaporator water entering/leaving temperature 10 C/7 C, evaporator fouling factor 0 m².K/W.* 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 in accordance with ISO 9614-1and certified by Eurovent.** In dB ref 20µPa, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of /-3dB(A)). For information, calculated from the soundpower level Lw(A).*** Option 257 Low noise level.**** Weight shown is guideline only. Please refer to the unit nameplate.Eurovent certified values7
Physical data, standard unitsHigh-efficiency units30XW-P/30XWHP512562712812862Air conditioning application as per EN14511-3:2013† - standard unitCondition 1Nominal cooling capacitykW509577737786861ESEERkW/kW 6.096.146.416.246.17EERkW/kW 5.715.645.835.625.65Eurovent class coolingAAAAAAir conditioning application †† - standard unitCondition 1Nominal cooling capacitykW510578739788863ESEERkW/kW 6.616.776.946.836.84EERkW/kW 5.945.896.045.855.92Heating application as per EN14511-3:2013† - standard unitCondition 2Nominal heating capacitykW583662842904982COPkW/kW 4.914.844.974.804.85Eurovent class heatingAAAAAHeating application ††Condition 2Nominal heating capacitykW581660840901978COPkW/kW 5.125.075.175.015.10Sound levels - standard unitSound power level*dB(A)9999999999Sound pressure level at 1 m**dB(A)8282818181Sound levels - standard unit option 257***Sound power level*dB(A)9696969696Sound pressure level at 1 m**dB(A)7878787878Dimensions - standard 0691069Heightmm17431743195019501950Operating rmetic 06T screw compressors, 50 r/sCircuit A11111Circuit BRefrigerant**** - standard unitR-134aCircuit Akg130130180175170Circuit BkgGlobal Warming Potential (GWP)186257250243Tonnes of equivalent CO2 of greatest circuit tonnes 186Capacity controlTouch Pilot, electronic expansion valves (EXV)Minimum capcity%1515151515EvaporatorMulti-pipe flooded typeWater volumel101101154154154Water connections (Victaulic)in66888in3/83/83/83/83/8Drain and vent connections (NPT)Max. water-side operating pressurekPa10001000100010001000CondenserMulti-pipe flooded typeWater volumel103103148148148Water connections (Victaulic)in66888Drain and vent connections (NPT)in3/83/83/83/83/8Max. water-side operating 23103/81000623103/81000† Eurovent-certified performances in accordance with standard EN14511-3:2013.† † Gross performances, not in accordance with EN14511-3:2013. These performances do not take into account the correction for the proportional heating capacity and power input generated by thewater pump to overcome the internal pressure drop in the heat exchanger.Condition 1 : Cooling mode conditions, evaporator water entering/leaving temperature 12 C/7 C, condenser water entering/leaving temperature 30 C/35 C, evaporator fouling factor 0 m².K/W.Condition 2: Cooling mode conditions, condenser water entering/leaving temperature 40 C/45 C, evaporator water entering/leaving temperature 10 C/7 C, evaporator fouling factor 0 m².K/W.* 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 in accordance with ISO 9614-1and certified by Eurovent.** In dB ref 20µPa, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of /-3dB(A)). For information, calculated from the soundpower level Lw(A).*** Option 257 Low noise level.**** Weight shown is guideline only. Please refer to the unit nameplate.Eurovent certified values8
Electrical data, standard unitsStandard-efficiency units30XW--/30XWH254 304 354 402 452Power circuitNominal power supplyV-ph-Hz400-3-50Voltage rangeV360-440Control circuit24 V via
Water-Cooled Screw Chillers Water-sourced screw heat pumps 30XW/30XW-P 30XWH/30XWHP . - Automatic compressor unloading in case of abnormally high condensing pressure. . oil pressure lubricated
cause water-cooled chillers can take advantage of lower condensing temperatures than air-cooled chillers. Air-cooled chillers have a full load kW/ton of approxi-mately 1.25 while water-cooled chillers have a full load kW/ton of between 0.55 and 0.8 kW/ton. The kW draw of the cooling tower fans and con-denser water pump should be
McQuay International introduces its new water cooled screw chillers equipped with new compressors. McQuay water cooled PROXIMUS “EVOLUTION” is a new range of chillers using the last generation of McQuay StarGateTM single screw compressors. They are manufactured by McQuay to satis
8 to 12 F for water-cooled chillers and 10 to 15 F for air-cooled chillers. ENSURE PROPER SUPERHEAT For air-cooled chillers, make sure fans work properly and coils are clean on the condenser side of the system. For water-cooled chillers, ensure that all flow rates and pressure drops on th
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