JWA 081÷211 VV/H/P/A

Home KTK Products Junior line - Liquid Chillers and Heat Pumps <200kW AIRCOOLED LIQUID CHILLERS AND HEAT PUMPS JWA 081÷211 VV/H/P/A
JWA 081÷211 VV/H/P/A

JWA 081÷211 VV/H/P/A

A CLASS energy efficiency aircooled liquid chillers with axial fans, (Inverter) screw compressor and plate exchanger

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The JWA 081÷211 VV/H/P/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 compressor and the new design optimized in every detail ensure the reach of the highest efficiency. Furthermore, accessories as the Inverter control on 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 soundproofing the compressor compartment and the 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 for indoor ducted installation.
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).

Versions

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

Power range

  • 79.0-208 kW
  • 22.0-59.0 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 tube and aluminum finned coils or aluminium MICROCHANNEL 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 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
  • 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
  • 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
  • RT Total heat recovery
  • TX Coil with pre-coated fins
  • TXB Coil with epoxy treatment
  • 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%
  • FE Antifreeze heater for evaporator
  • FN Antifreeze heater for pipes
  • FO Antifreeze heater for tank and pipes
  • FG Antifreeze heater for single pump and pipes
  • FM Antifreeze heater for double pump and pipes
  • FUM Antifreeze heater for tank, single pump and pipes
  • FDM Antifreeze heater for tank, double pump and pipes
  • 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
  • FP Coils protection metallic guards with filter
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
081101131171211
Cooling STD versionCooling capacity (1)kW78,6101130163208
Absorbed power (1)kW23,932,339,749,666,6
EER (1)3,293,133,273,293,12
Cooling STD version (EN14511)Cooling capacity (1)kW78,5101130163208
Absorbed power (1)kW23,932,439,849,866,9
EER (1)3,283,123,273,273,11
SEER (2)4,093,953,934,064,02
Energy Efficiency (2)%161155154159158
SEER with EC or ECH accessory (2)4,684,424,474,524,47
Energy Efficiency with EC or ECH accessory (2)%184174176178176
Cooling MC versionCooling capacity (1)kW78,6101130163208
Absorbed power (1)kW23,531,839,148,965,9
EER (1)3,343,183,323,333,16
Cooling MC version (EN14511)Cooling capacity (1)kW78,5101130163208
Absorbed power (1)kW23,531,939,249,166,2
EER (1)3,343,173,323,323,14
SEER (2)4,103,973,934,064,02
Energy Efficiency (2)%161156154159158
SEER with EC or ECH accessory (2)4,694,434,484,534,48
Energy Efficiency with EC or ECH accessory (2)%185174176178176
CompressorQuantityn°11111
Refrigerant circuitsn°11111
Capacity stepsn°SteplessSteplessSteplessSteplessStepless
EvaporatorWater flowl/s3,764,836,217,799,94
Pressure dropskPa911111212
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 currentA10199,6133152214
Max. starting currentA180190279328435
Unit with tank and pumpPump available static pressurekPa145205190180150
Tank water volumel600600600600600
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)kg12811441188819982189
Operating weight (4)kg13001480193020502260

Dimensions

081101131171211
LSTD-SSL-MC-MC/SSLmm35503550470047004700
WSTD-SSL-MC-MC/SSLmm11001100110011001100
HSTD-SSL-MC-MC/SSLmm22002200220022002200

Notes

  • 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.