JWA 051÷172 S/K/P

Home KTK Products Junior line - Liquid Chillers and Heat Pumps <200kW AIRCOOLED LIQUID CHILLERS AND HEAT PUMPS JWA 051÷172 S/K/P
JWA 051÷172 S/K/P
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JWA 051÷172 S/K/P

Aircooled liquid Chillers and Heat Pumps with axial fans, Scroll compressors and plate exchanger

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The liquid Chillers and Heat Pumps of the JWA 051÷172 S/K/P series, with R410A refrigerant, are designed for medium-sized service sector or industrial ambients.
They are used, combined with Fan Coil units, for the air conditioning of the rooms or to remove the heat developed during industrial processes. They can be supplied with Modbus RTU protocol through RS485 serial interface.
Equipped with axial fans, Scroll compressors and plate exchanger, even in the super silent version, these units can be completed by a hydraulic circuit with tank, with pump, with tank and pump or with AQUALOGIK technology.
The AQUALOGIK smart control system optimises the water set point and modulates the power supply voltage of the pump and the fans, thus making the use of the inertial tank superfluous. This obtains high energy efficiency, quiet operation and optimised dimensions and costs.
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).

On request, units can be supplied with R452B or R454B refrigerant.

Versions

  • JWA - Cooling only
  • JWA/WP - Reversible heat pump
  • JWA/SSL - Super silenced cooling only
  • JWA/WP/SSL - Super silenced reversible heat pump
  • JWA/ST - Cooling only with AQUALOGIK technology
  • JWA/WP/ST - Reversible heat pump with AQUALOGIK technology
  • JWA/SSL/ST - Super silenced cooling only with AQUALOGIK technology
  • JWA/WP/SSL/ST - Super silenced reversible Heat Pump with AQUALOGIK technology

Power range

  • 48.0-178 kW
  • 14.0-51.0 Ton

Features

  • 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.
  • 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. On the Heat Pump units it is always installed an antifreeze heater.
  • 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.
  • On ST versions water circuit includes INVERTER circulating pump, safety valve and expansion vessel.
  • On ST versions Condensing Control is included: electronic proportional device that ensures efficient and continuous functioning of the unit with outside air temperature down to –20 °C in cooling mode. It also allows to reduce the sound level especially at night. It consists of a fans speed controller with continuous speed regulation, an high/low pressure transducer on cooling circuit and an electrical heater on electrical board.
  • Microprocessor control and regulation system (with AQUALOGIK technology on ST versions).

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
  • CT Condensing control down to 0 °C
  • 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
  • DS Desuperheater
  • 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%
  • 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
  • SS Soft start
  • IS Modbus RTU protocol, RS485 serial interface
  • 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
  • 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
051061071081091101111131152172
CoolingCooling capacity (1)kW47,654,963,572,983,495,9110127147178
Absorbed power (1)kW16,118,821,825,028,231,637,943,350,158,2
EER (1)2,962,922,912,922,963,032,902,932,933,06
Cooling (EN14511)Cooling capacity (1)kW47,554,763,372,783,295,6110127147178
Absorbed power (1)kW16,419,122,125,428,632,238,544,050,859,0
EER (1)2,902,872,862,862,912,972,852,882,893,01
SEER (2)3,783,793,723,743,833,833,653,753,873,86
Energy Efficiency (2)%148149146147150150143147152151
SEER with EC or ECH accessory (2)4,114,114,144,114,164,134,124,184,214,27
Energy Efficiency with EC or ECH accessory (2)%161161163161163162162164165168
HeatingHeating capacity (3)kW54,161,871,480,390,4106120135154187
Absorbed power (3)kW17,319,623,125,428,833,438,543,850,560,4
COP (3)3,133,153,093,163,143,173,123,083,053,10
Heating (EN14511)Heating capacity (3)kW54,462,171,780,790,8106120135154187
Absorbed power (3)kW17,720,123,626,029,434,239,344,751,561,5
COP (3)3,073,093,043,103,083,113,063,023,003,05
SCOP (4)3,233,203,213,283,293,283,203,253,243,25
Energy Efficiency (4)%126125125128129128125127127127
Energy Class (5)A+A+A+A+------
CompressorQuantityn°2222233344
Refrigerant circuitsn°1111111122
Capacity stepsn°2222233344
EvaporatorWater flowl/s2,272,623,033,483,984,575,246,057,018,48
Pressure dropskPa45484348435846534848
Water connections"G1 ½"1 ½"1 ½"1 ½"1 ½"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 currentA4144556067798697112131
Max. starting currentA164166179192235202218264244298
Electrical characteristics (ST versions)Power 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 currentA44485963718490102116135
Max. starting currentA168170182196238207222269248303
Unit with tank and pumpPump available static pressurekPa140130130115140165170155150135
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"
Unit ST versionsWater flowl/s2,272,623,033,483,984,575,246,057,018,48
Pump available static pressurekPa135125120110105130135120120100
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 pressureSTD versionsPa90801001001008095756060
SSL versionsPa858575757050706060---
ST versionsPa90801001001008095756060
SSL/ST versionsPa858575757050706060---
Sound pressureSTD and ST versions (6)dB(A)61616464656767676767
With SL accessory (6)dB(A)59596262636565656565
SSL and SSL/ST versions (6)dB(A)57,057,060,060,061,062,063,063,063,0---
WeightsTransport weight (7)kg595624663682791878927103611351374
Operating weight (7)kg600630670690800890940105011501390
Weight ST versionsTransport weightkg610639678697806898947105611551394
Operating weightkg615645685705815910960107011701410

Dimensions

051061071081091101111131152172
LSTD-STmm2350235023502350235023502350235035503550
SSL-SSL/STmm235023502350235023502350355035503550---
WSTD-SSL-ST-SSL/STmm1100110011001100110011001100110011001100
HSTD-SSL-ST-SSL/STmm1950195019501950225022502250225022502250

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 Heated water from 40 to 45 °C, ambient air temperature 7 °C d.b./6 °C w.b.
  • 4 Seasonal energy efficiency of heating at low temperature with average climatic conditions. According to EU Regulation n. 813/2013.
  • 5 Seasonal energy efficiency class of heating at low temperature with average climatic conditions. According to EU Regulation n. 811/2013.
  • 6 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • 7 Unit without tank and pump.
  • N.B. (1) Weights of SSL and WP versions are specified on technical brochure.