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CRE-EH 2230÷21550

A CLASS energy efficiency aircooled liquid Chillers with axial fans, (Inverter) Screw compressors, Microchannel condensing coils and shell and tube exchanger

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The CRE-EH 2230÷21550 units, in A CLASS energy efficiency and with HFO-R1234ze refrigerant, are specifically designed for big size data centres. They have high EER values due to reduced electrical absorption and a high efficiency of the compressor-exchanger combination.
The latest generation refrigerant HFO-R1234ze, with GWP<1 (Global Warming Potential), is the most environmentally sustainable refrigerant on the market, and meets the strictest international environmental regulations.
The Microchannel condensing coils, the Screw compressors and the new design optimized in every detail ensure the reach of the highest efficiency. Furthermore, accessories as the Inverter control on Screw compressors, on circulating pumps and EC Inverter on fans are also available for getting the highest efficiency at part load. The super silenced version, obtained through acoustic insulation on compressors and wider exchangers, is particularly suitable for installations where extremely quiet operation are essential for the ideal execution of the system.
Units are featured as standard with an electronic proportional device that ensures efficient continuous functioning of the unit with outside air temperature down to –20 °C.


  • CRE-EH - Cooling only
  • CRE-EH/SSL - Super silenced cooling only

Power range

  • 237-1.6 kW
  • 67.0-463 Ton


  • 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.
  • Axial fans directly coupled to an electric motor with external rotor.
  • Condenser made of aluminium MICROCHANNEL coils.
  • 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.
  • HFO-R1234ze refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuses, thermal protection relays for compressors and thermocontacts for fans.
  • Condensing Control is included: electronic proportional device that ensures efficient and continuous functioning of the unit with outside air temperature down to –20 °C. It also allows to reduce the sound level especially at night. It consists of a fans speed controller with continuous speed regulation, high and low pressure transducers on cooling circuit and an electrical heater on electrical board.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • DPS Double power supply
  • SL Unit silencement
  • EC EC Inverter fans
  • ECH EC Inverter fans with high available static pressure
  • TXB Coil with epoxy treatment
  • EW External water connections
  • SP Inertial tank
  • PU Single circulating pump
  • PUI Inverter single circulating pump
  • PD Double circulating pump
  • PDI Inverter double circulating pump
  • SPU Inertial tank and single circulating pump
  • SPUI Inertial tank and Inverter single circulating pump
  • SPD Inertial tank and double circulating pump
  • SPDI Inertial tank and Inverter double circulating pump
  • 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
  • RP Coils protection metallic guards
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
  • FL Flow switch
CoolingCooling capacity (1)kW2373143724404895586597328639741179128014781628
Absorbed power (1)kW6889105125138158181202240267322357407454
EER (1)3,493,533,543,523,543,533,643,623,603,653,663,593,633,59
Cooling (EN14511)Cooling capacity (1)kW2363133714384875566567298599701175127514721620
Absorbed power (1)kW6990106127140160184205244271326362413462
EER (1)3,423,483,503,453,483,483,573,563,523,583,603,523,563,51
SEPR (2)5,095,055,065,505,975,835,855,985,855,955,875,875,855,83
Refrigerant circuits22222222222222
Capacity stepsSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessStepless
EvaporatorWater flowl/s11,3215,0017,7721,0223,3626,6631,4934,9741,2346,5456,3361,1670,6277,78
Pressure dropskPa5654464945405448586143556878
Water connectionsDN125125150150150150150150200200200200250250
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA2032753193554134675125976707317648319511039
Max. starting currentA29141748858664272378389694710911206124414501494
Unit with tank and pumpPump available static pressurekPa1301451551201151501101001201009012011580
Tank water volumel2000200020002000200020002000300030003000----
Water connectionsDN100100100100125125150150150150----
Sound pressureSTD version (3)dB(A)7475757676777777798081818383
With SL accessory (3)dB(A)7172727373747474767778788080
SSL version (3)dB(A)666767686869696971727373------
WeightsTransport weight (4)kg2700321535404015412046255165526062407460899594351123011560
Operating weight (4)kg2790330036704180428048205430552065707880950099101180012190




  • 1 Chilled water from 18 to 13 °C, ambient air temperature 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.
  • 4 Unit without tank and pump.
  • N.B. (1) Weights of SSL version are specified on technical brochure.