JWA 081÷211 VV/H/A


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The JWA 081÷211 VV/H/A units in A CLASS energy efficiency, with HFO-R1234ze refrigerant, are designed to provide an effective solution to highly selective system needs. 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 innovative heat exchangers, traditional or Microchannel, 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 one or both Screw compressors, fans and on circulating pumps (EC Inverter) are also available for getting the highest efficiency at part load. The super silenced versions, obtained through acoustic insulation on compressors and on whole structure and wider exchangers, are particularly suitable for installations where extremely quiet operations are essential for the ideal execution of the system.
Are available as option the new EC Inverter fans with high available static pressure and efficiency.
Units are compliant to the ErP 2021 Regulation for process cooling application; for comfort cooling application they are compliant if provided with EC or ECH accessory (EC Inverter fans).


  • JWA - Cooling only
  • JWA/MC - Cooling only with MICROCHANNEL condensing coils
  • JWA/SSL - Super silenced cooling only
  • JWA/MC/SSL - Super silenced cooling only with MICROCHANNEL condensing coils

Power range

  • 79.0-211 kW
  • 22.0-60.0 Ton


  • Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
  • Screw compressor 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 copper tube and aluminum finned coils or aluminium MICROCHANNEL coils.
  • Shell and tube evaporator with one independent circuit on the refrigerant side and one on the water side.
  • 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 0 °C. It also allows to reduce the sound level especially at night. It consists of a fans speed controller with continuous speed regulation and high and low pressure transducers on cooling circuit.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • SL Unit silencement
  • CC Condensing control down to -20 °C
  • BT Low water temperature kit
  • EC EC Inverter fans
  • ECH EC Inverter fans with high available static pressure
  • HRT/S Total heat recovery in series
  • HRT/P Total heat recovery in parallel
  • TX Coil with pre-coated fins
  • 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
  • FE Antifreeze heater for evaporator
  • FX Antifreeze heater for evaporator and pipes
  • FQ Antifreeze heater on evaporator/tank and pipes
  • FZ Antifreeze heater for evaporator, single pump and pipes
  • FH Antifreeze heater for evaporator, double pump and pipes
  • FU Antifreeze heater for evaporator/tank, single pump and pipes
  • FD Antifreeze heater for evaporator/tank, double pump and pipes
  • IQ Inverter on one compressor
  • 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 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
  • FP Coils protection metallic guards with filter
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
  • FL Flow switch
Cooling STD versionCooling capacity (1)kW78,799,0129165211
Absorbed power (1)kW23,630,839,048,966,7
EER (1)3,333,213,313,373,16
Cooling STD version (EN14511)Cooling capacity (1)kW78,898,9129164211
Absorbed power (1)kW23,431,039,349,667,3
EER (1)3,373,193,283,313,14
SEER (2)4,154,023,974,154,07
Energy Efficiency (2)%163158156163160
SEER with EC or ECH accessory (2)4,734,534,534,634,53
Energy Efficiency with EC or ECH accessory (2)%186178178182178
Cooling MC versionCooling capacity (1)kW78,799,0129165211
Absorbed power (1)kW23,230,338,448,266,0
EER (1)3,393,273,363,423,20
Cooling MC version (EN14511)Cooling capacity (1)kW78,898,9129164211
Absorbed power (1)kW23,030,538,748,966,6
EER (1)3,433,243,333,353,17
SEER (2)4,164,033,974,154,07
Energy Efficiency (2)%163158156163160
SEER with EC or ECH accessory (2)4,744,544,544,644,54
Energy Efficiency with EC or ECH accessory (2)%187179179183179
Refrigerant circuits11111
Capacity stepsSteplessSteplessSteplessSteplessStepless
EvaporatorWater flowl/s3,764,736,167,8810,08
Pressure dropskPa2120234431
Water connections"G2 1/2"2 1/2"2 1/2"2 1/2"2 1/2"
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA101100133152214
Max. starting currentA180190279328435
Unit with tank and pumpPump available static pressurekPa140200180150130
Tank water volumel660660660660660
Water connections"G2 1/2"2 1/2"2 1/2"2 1/2"2 1/2"
ECH fan available static pressureSTD versionsPa110110110110110
SSL versionsPa110110110110110
MC versionsPa110110110110110
MC/SSL versionsPa110110110110110
Sound pressureSTD version (3)dB(A)7474757576
With SL accessory (3)dB(A)7171727273
SSL version (3)dB(A)6666676869
WeightsTransport weight (4)kg13611465200520732367
Operating weight (4)kg13801490204021202420




  • 1 Chilled water from 12 to 7 °C, ambient air temperature 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.
  • 4 Unit without tank and pump.
  • N.B. (1) Weights of SSL versions are specified on technical brochure.
  • N.B. (2) Data of MC versions are specified on technical brochure.