TWH 322÷2582 VV/Y

Energy efficiency watercooled liquid Chillers with (Inverter) Screw compressors and shell and tube exchangers

_ktk_icon_versions_cooling_only.png _ktk_icon_compressor_Screw_inverter.png _ktk_icon_compressor_screw.png _ktk_icon_shell_and_tube.png _ktk_icon_gsm.png _ktk_icon_refrigerant_R134a.png ktk_icon_refrigerant_R513A.png

The liquid Chillers of the CWW/Y 1302-B÷9003-B series, with R134a refrigerant, are designed to satisfy the needs of the service sector or industrial systems requiring high power.
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 such as heat recovery in series or in parallel, soft start and, if necessary, a device for operating a Heat Pump. 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.
The models 1302-B÷1702-B are compliant to ErP 2021 Regulations. The models 1902-B÷9002-B are compliant to ErP 2021 Regulations with ID accessory (Inverter on all compressors).
On request, units can be supplied with R513A refrigerant.


  • TWH - Cooling only
  • TWH/SSL - Super silenced cooling only

Power range

  • 267-2349 kW
  • 76.0-668 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.
  • 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
  • BT Low water temperature kit
  • HR Desuperheater
  • HRT Total heat recovery
  • FE Antifreeze heater for evaporator
  • II Inverter on one compressor and soft start for other compressors
  • ID Inverter on all compressors
  • SS Soft start
  • DP Device for heat pump operation
  • HTW Device for high temperature hot water production.
  • 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 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)kW267323374426488577660750892104911591286143816121753192221162349
Absorbed power (1)kW5769809099123136150182210234256287323350383425475
EER (1)4,684,684,684,734,934,694,855,004,905,004,955,025,014,995,015,024,984,95
Cooling (EN14511)Cooling capacity (1)kW266322372424486574657747889104511551281143216041744191321072333
Absorbed power (1)kW59728394103128142157189219244269299339367403444502
EER (1)4,474,484,464,514,744,484,624,774,704,784,734,774,794,734,754,754,754,65
SEER (2)5,665,715,715,956,115,935,956,156,076,246,136,206,376,456,456,336,336,33
Energy Efficiency (2)%218220220230236229230238235242237240247250250245245245
Refrigerant circuits222222222222222222
Capacity stepsSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessStepless
EvaporatorWater flowl/s12,7615,4317,8720,3523,3227,5731,5335,8342,6250,1255,3761,4468,7077,0283,7591,83101112
Pressure dropskPa5143556048616766476251596581747060107
Water connectionsDN100125125125125150150150200200200200200200250250250250
CondenserWater flowl/s15,4818,7121,6724,6728,0033,4338,0042,9951,3260,1766,5573,6782,4292,45100110121135
Pressure dropskPa434951473652484557496677666363736757
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 12 to 7 °C, water temperature at the condenser from 30 to 35 °C.
  • 2 Seasonal energy efficiency of cooling at low temperature. According to EU Regulation 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.