JWH 081÷171 VV/H/P/A

A CLASS energy efficiency watercooled liquid Chillers with (Inverter) Screw compressor and plate exchangers

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The liquid Chillers of the JWH 081÷171 VV/H/P/A series, with A CLASS energy efficiency and HFO-R1234ze refrigerant, are designed to satisfy the needs of the service sector or industrial systems requiring high power.
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.
Equipped with latest generation Screw compressor and plate exchangers, these units 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. Furthermore, accessories as the Inverter control on one compressor is also available for getting the highest efficiency at part load and a significant reduction of starting current.
Units are compliant to ErP 2021 European Regulations for comfort cooling application.


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

Power range

  • 86.0-189 kW
  • 25.0-54.0 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.
  • Condenser AISI 316 stainless steel braze welded plates type with one circuit on the refrigerant side and one on the water side.
  • Evaporator AISI 316 stainless steel braze welded plates type with one circuit 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.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • BT Low water temperature kit
  • RT Total heat recovery
  • FE Antifreeze heater for evaporator
  • FO Antifreeze heater for tank and pipes
  • IQ Inverter on one compressor
  • 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
  • SPU Inertial tank and single circulating pump
  • SPD Inertial tank and double circulating pump
  • PV2 2-Way electronic pressostatic valve
  • PV3 3-Way electronic pressostatic valve
  • AG Rubber shock absorbers
  • AG1 Rubber shock absorbers for SPU and SPD modules
  • AM Spring shock absorbers
  • AM1 Spring shock absorbers for SPU and SPD modules
CoolingCooling capacity (1)kW86,4115152189
Absorbed power (1)kW16,821,728,935,2
EER (1)5,145,305,265,37
Cooling (EN14511)Cooling capacity (1)kW86,3115152189
Absorbed power (1)kW17,022,029,336,0
EER (1)5,085,235,195,25
SEER (2)5,515,495,555,60
Energy Efficiency (2)%212212214216
Refrigerant circuits1111
Capacity stepsSteplessSteplessSteplessStepless
EvaporatorWater flowl/s4,135,497,269,03
Pressure dropskPa13141315
Water connections"G2 ½"2 ½"3"3"
CondenserWater flowl/s4,936,528,6010,66
Pressure dropskPa12111219
Water connections"G2 ½"2 ½"3"3"
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50
Max. running currentA9392122141
Max. starting currentA172183268317
Unit with tank and pumpPump available static pressurekPa16512512580
Tank water volumel300300300300
Water connections"G2 ½"2 ½"3"3"
Sound pressureSTD version (3)dB(A)74757576
SSL version (3)dB(A)70717172
WeightsTransport weight (4)kg922118913901506
Operating weight (4)kg960128014901610


UNIT + SPU/SPDmm3910391039103910
UNIT + SPU/SPDmm730730730730
UNIT + SPU/SPDmm1620162016201620


  • 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.
  • 4 Unit without tank and pump.
  • N.B. (1) Weights of SSL version are specified on technical brochure.