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CRW-Y 2270÷22470

Watercooled liquid Chillers with Screw compressors and shell and tube exchangers

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The liquid Chillers of the CRW-Y 2270÷22470 series, with R134a refrigerant, are specifically designed for medium size data centres.
Equipped with latest generation Screw compressors, shell and tube exchangers and connections for condensation with cooling tower water or well water or with a Dry-Cooler, these units can also be produced in super silent versions. Furthermore, they have a series of accessories which are factory fitted or supplied separately. Designed and produced to optimize the layout of each component so as to make any necessary maintenance operations more convenient, these units have an essential and compact structure intended for indoor installation.
CRW-J 2270÷22470
On request, units can be supplied with R513A refrigerant.


  • CRW-Y - Cooling only
  • CRW-Y/SSL - Super silenced cooling only


  • Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
  • Screw compressors with built-in oil separator, suction filter, crankcase heater, oil sight glass, thermal protection and stepless capacity steps.
  • Shell and tube type condenser, with easily removable cast iron heads to enable access for maintenance operations. Each cooling circuit is supplied with an independent condenser. Water connections for cooling tower and Dry-Cooler operation; on request for well water.
  • Shell and tube evaporator with two independent circuits on the refrigerant side and one on the water side, complete with water differential pressure switch.
  • Cooling circuit shut-off valves on discharge and liquid line.
  • Electronic expansion valve.
  • Electronic high and low pressure gauges.
  • R134a refrigerant. On request R513A refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuses, thermal protection relays for compressors.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • DPS Double power supply
  • II Inverter on one compressor and soft start for other compressors
  • ID Inverter on all compressors
  • SS Soft start
  • WM Web Monitoring - Wireless remote monitoring (GPRS/EDGE/3G/TCP-IP)
  • IS Modbus RTU protocol, RS485 serial interface
  • IST Modbus TCP/IP protocol, Ethernet port
  • ISB BACnet MSTP protocol, RS485 serial interface
  • ISBT BACnet TCP/IP protocol, Ethernet port
  • ISL LonWorks protocol, FTT-10 serial interface
  • ISS SNMP protocol, Ethernet port
  • IAV Remote set-point, 0-10 V signal
  • IAA Remote set-point, 4-20 mA signal
  • IAS Remote signal for second set-point activation
  • IDL Demand limit from digital input
  • CP Potential free contacts

Loose accessories

  • MN High and low pressure gauges
  • CR Remote control panel
  • PV3 3-Way electronic pressostatic valve
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
  • FL Flow switch
CoolingCooling capacity (1)kW301362404458522619705800953110612171355149018782058225224722766
Absorbed power (1)kW5971818997121134147188216241266285357397438487535
EER (1)5,105,104,995,155,385,125,265,445,075,125,055,095,235,265,185,145,085,17
Cooling (EN14511)Cooling capacity (1)kW299360401455520615700795949110212121348148318662044223824582743
Absorbed power (1)kW63768896107134159174211245288330349432478543591647
EER (1)4,754,744,564,744,864,594,404,574,504,504,214,084,254,324,284,124,164,24
SEPR (2)7,017,087,088,118,108,088,118,158,128,018,018,108,178,518,518,578,578,57
Refrigerant circuits222222222222222222
Capacity stepsSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessStepless
EvaporatorWater flowl/s14,3817,3019,3021,8824,9429,5733,6838,2245,5352,8458,1564,7471,1989,7398,33108118132
Pressure dropskPa655464695570767554695666701101029782149
Water connectionsDN100125125125125150150150200200200200200200250250250250
CondenserWater flowl/s17,2020,6923,1726,1329,5735,3640,0945,2554,5163,1669,6677,4584,81107117129141158
Pressure dropskPa5360585340585350645472857084861009178
Water connectionsDN656565658080808080100100100100125100100100125
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA17821423827030635439843851860260265881883480186310321144
Max. starting currentA240258314330374465487549723765765793161014791013104511291365
Sound pressureSTD version (3)dB(A)767676767676767778798080818282838485
SSL version (3)dB(A)727272727272727374757676777878798081
WeightsTransport weightkg212421832309234029733121317442744613464546505360544060006630804081009150
Operating weightkg2240235024802510316034403490458050505100522059406100669073808940905010170




  • 1 Chilled water from 18 to 13 °C, water temperature at the condenser from 30 to 35 °C.
  • 2 Efficienza energetica stagionale di raffreddamento di processo ad alta temperatura secondo il Regolamento UE n. 2016/2281.
  • 3 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • N.B. (1) Weights of SSL version are specified on technical brochure.