JWA/FC 081÷171 VV/H/P

Aircooled liquid chillers Free-Cooling with axial fans, (Inverter) screw compressor and plate exchanger

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The liquid Chillers of the JWA/FC 081÷171 VV/H/P series, with HFO-R1234ze refrigerant, offer innovative technology to meet the needs of large systems for both domestic as well as industrial applications requiring the production of cooled water continuously year-round. 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.
During the cold months, in FREE-COOLING operating mode, the liquid returning from the system is cooled directly by forced convection of outdoor air through the condensing coil, thus saving energy by not operating the unit's Screw 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.
The units are compliant to the 2021 ErP Regulation for process cooling application.

Versions

  • JWA/FC - Cooling only

Power range

  • 82.0-170 kW
  • 23.0-48.0 Ton

Features

  • 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 tubes and aluminium finned coils combined with FREE-COOLING coils.
  • 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 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
  • DSV Double relief safety valve with changeover switch on the high pressure side for each refrigerant circuit
  • DSVHL Double relief safety valve with changeover switch on the high and on the low pressure side of each refrigerant circuit
  • BT Low water temperature kit
  • EC EC Inverter fans
  • ECH EC Inverter fans with high available static pressure
  • RT Total heat recovery
  • TX Coil with pre-coated fins
  • SI Inertial tank
  • PS Single circulating pump
  • PSI Inverter single circulating pump
  • PD Double circulating pump
  • PDI Inverter double circulating pump
  • GS Single circulating pump gasket for glycol >30%
  • GD Double circulating pump gaskets for glycol >30%
  • IQ Inverter on one compressor
  • SS Soft start
  • WM Web Monitoring - Wireless remote monitoring (GPRS/EDGE/4G/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
  • ISS SNMP protocol, Ethernet port
  • IAV Remote set-point, 0-10V signal
  • IAA Remote set-point, 4-20mA signal
  • IAS Remote signal for second set-point activation
  • IDL Demand limit from digital input
  • CP Potential free contacts
  • MN High and low pressure gauges

Loose accessories

  • CR Remote control panel
  • RP Coils protection metallic guards
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
081101131171
CoolingCooling capacity (1)kW81,7110140170
Absorbed power (1)kW26,836,344,153,5
EER (1)3,053,033,173,18
Cooling (EN14511)Cooling capacity (1)kW81,5110140171
Absorbed power (1)kW27,136,544,853,8
EER (1)3,013,013,133,18
SEPR (2)6,867,336,896,58
Free-Cooling cycleAir temperature (3)°C1-20-3
Absorbed power (3)kW6688
CompressorQuantity1111
Refrigerant circuits1111
Capacity stepsSteplessSteplessSteplessStepless
Water circuit.Water flowl/s4,446,207,608,53
Pressure dropskPa3610880113
Water connections"G2 1/2"2 1/2"2 1/2"2 1/2"
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50
Max. running currentA105109137156
Max. starting currentA184200285334
Unit with tank and pumpPump available static pressurekPa18011012580
Tank water volumel600600600600
Water connections"G2 1/2"2 1/2"2 1/2"2 1/2"
ECH fan available static pressurePa110110110105
Sound pressureSTD version (4)dB(A)74747575
With SL accessory (4)dB(A)71717272
WeightsTransport weight (5)kg1503167720932222
Operating weight (5)kg1550176021802320

Dimensions

081101131171
LSTDmm3550470047004700
WSTDmm1100110011001100
HSTDmm2200220022002200

Notes

  • 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.