JWA/FC 051÷172 S/K/P

Aircooled liquid Chillers Free-Cooling with axial fans, Scroll compressors and plate exchanger

_ktk_icon_versions_cooling_only.png _ktk_icon_compressor_scroll.png _ktk_icon_axial_fan.png _ktk_icon_plate.png _ktk_icon_free_cooling.png _ktk_icon_refrigerant_R410A.png ktk_icon_refrigerant_R452B.png ktk_icon_refrigerant_R454B.png

The liquid Chillers of the JWA/FC 051÷172 S/K/P series, with R410A refrigerant, offer innovative technology for both domestic as well as industrial applications requiring the production of cooled water continuously year-round.
During the cold months, in the FREE-COOLING operation mode, the return liquid of the system is cooled directly by forced convection of outdoor air through the condensing coil, thus saving energy by not operating the unit's Scroll compressors. A 3-way valve system is controlled by the electronic microprocessor controller, allowing functioning in CHILLER, FREE-COOLING or MIXED (simultaneously CHILLER and FREE-COOLING) modes.
Are available as option the new EC Inverter fans with high available static pressure and efficiency for ducted installation.
The units are compliant to the 2021 ErP Regulation for process cooling application.
On request, units can be supplied with R452B or R454B refrigerant.


  • JWA/FC - Cooling only

Power range

  • 53.0-174 kW
  • 15.0-50.0 Ton


  • Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
  • Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
  • Axial fans directly coupled to an electric motor with external rotor.
  • Condenser made of copper tubes and aluminium finned coil combined with FREE-COOLING coil.
  • Evaporator AISI 316 stainless steel braze welded plates type with one circuit on the refrigerant side and one on the water side in 051÷131 models; with two independent circuits on the refrigerant side and one on the water side in 152÷172 models, complete with water differential pressure switch.
  • Electronic high and low pressure gauges.
  • R410A refrigerant. On request R452B or R454B 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
  • SL Unit silencement
  • RFM Cooling circuit shut-off valve on discharge line
  • RFL Cooling circuit shut-off valve on liquid line
  • BT Low water temperature kit
  • EC EC Inverter fans
  • ECH EC Inverter fans with high available static pressure
  • TX Coil with pre-coated fins
  • SI Inertial tank
  • PS Single circulating pump
  • PD Double circulating pump
  • SS Soft start
  • 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

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
CoolingCooling capacity (1)kW52,759,568,176,785,799,1114130151174
Absorbed power (1)kW18,120,323,326,129,336,842,248,454,464,9
EER (1)2,912,932,922,942,922,692,702,692,782,68
Cooling (EN14511)Cooling capacity (1)kW52,058,867,375,984,998,2113129150172
Absorbed power (1)kW18,821,024,126,930,137,743,549,955,766,4
EER (1)2,772,802,792,822,822,602,602,592,692,59
SEPR (2)5,115,135,125,145,125,115,095,085,155,14
Free-Cooling cycleAir temperature (3)°C2,11,30,0-2,4-3,51,00,0-1,1-3,0-4,8
Absorbed power (3)kW2222266688
Refrigerant circuits1111111122
Capacity steps2222233344
Water circuit.Water flowl/s2,723,073,523,964,435,095,886,707,788,93
Pressure dropskPa115105120100100100135145102106
Water connections"G2"2"2"2"2"2 ½"2 ½"2 ½"2 ½"2 ½"
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA35414854657685102113136
Max. starting currentA130140144169209173201246229280
Unit with tank and pumpPump available static pressurekPa120125100115100190145125150125
Tank water volumel400400400400400400400400600600
Water connections"G2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"
ECH fan available static pressure Pa1101101101051056060606565
Sound pressureSTD version (4)dB(A)63636363646566666767
With SL accessory (4)dB(A)61616060626364646565
WeightsTransport weight (5)kg92393295198099913081317135014721510
Operating weight (5)kg97098010001030105013901400143515601600




  • 1 Chilled water (with ethylene glycol at 30%) from 15 to 10 °C, ambient air temperature 35 °C.
  • 2 Seasonal energy efficiency of high temperature process cooling according to EU Regulation No. 2016/2281.
  • 3 Ambient air temperature at which the cooling capacity indicated in point (1) is reached.
  • 4 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • 5 Unit without tank and pump.