JWA 051÷172 S/IK/P/A

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

JWA 051÷172 S/IK/P/A

A CLASS energy efficiency aircooled liquid Chillers and Heat Pumps with axial fans, Inverter Scroll compressors and plate exchanger

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The A CLASS energy efficiency liquid Chillers and Heat Pumps of JWA 051÷172 S/IK/P/A series, with R410A refrigerant, are designed to satisfy the needs of medium-sized service sector or industrial ambients.
They are equipped with axial fans, Inverter Scroll compressors and plate exchanger, even in the super silent version. All units feature A CLASS energy efficiency and are equipped with Inverter control on Scroll compressor for a better efficiency at partial loads (SEER/SCOP). The Microchannel condensing coils, available on dedicated versions, ensure an even higher efficiency (high EER), having a better heat exchange than traditional coils. Furthermore, Inverter control is also available on circulating pump and fans (EC Inverter) for a further efficiency improvement. A wide range of accessories, factory fitted or supplied separately, complete the outstanding versatility and functionality of the series.
Are available as option the new EC Inverter fans with high available static pressure and efficiency for indoor ducted installation.
The Heat Pump versions are designed for hot water production up to 55°C.
The units are compliant to the ErP Regulation.

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

Versions

  • JWA - Cooling only
  • JWA/MC - Cooling only with MICROCHANNEL coil
  • JWA/WP - Reversible heat pump
  • JWA/SSL - Super silenced cooling only
  • JWA/MC/SSL - Super silenced cooling only with MICROCHANNEL coil
  • JWA/WP/SSL - Super silenced reversible heat pump

Features

  • Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
  • DC INVERTER Scroll and ON-OFF 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 tube and aluminum finned coil or aluminium MICROCHANNEL 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.
  • Electronic expansion valve.
  • 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 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, high and low pressure transducers on cooling circuit and an electrical heater on electrical board.
  • Functioning in heating mode with outside air temperature down to -15 °C.
  • 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
  • DS Desuperheater
  • RT Total heat recovery
  • TX Coil with pre-coated fins
  • TXB Coil with epoxy treatment
  • 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
  • FG Antifreeze heater for single pump and pipes
  • FM Antifreeze heater for double pump and pipes
  • 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
  • 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
Cooling STD versionsCooling capacity (1)kW49,957,765,774,885,997,7112130152179
Absorbed power (1)kW15,618,120,423,627,030,335,040,547,255,6
EER (1)3,203,193,223,173,183,223,203,213,223,22
Cooling STD versions (EN14511)Cooling capacity (1)kW49,857,565,674,685,697,5112130152179
Absorbed power (1)kW15,818,420,723,927,530,735,441,147,856,2
EER (1)3,143,133,183,123,123,173,153,153,183,18
ESEER4,074,134,033,993,934,094,014,023,974,00
Energy Efficiency (2)%173179173173174174177173173171
Cooling MC versionsCooling capacity (1)kW49,957,765,774,885,997,7112130152179
Absorbed power (1)kW15,417,920,223,426,730,034,740,146,755,0
EER (1)3,243,223,253,203,223,263,233,243,253,25
Cooling MC versions (EN14511)Cooling capacity (1)kW49,857,565,674,685,697,5112130152179
Absorbed power (1)kW15,618,220,523,727,230,435,140,747,355,6
EER (1)3,183,173,213,143,153,203,183,183,213,21
SEER (2)4,454,604,454,434,464,474,534,434,444,38
Energy Efficiency (2)%175181175174175176178174175172
Heating STD versionsHeating capacity (3)kW53,762,271,080,792,6105121140164193
Absorbed power (3)kW16,218,721,224,528,031,436,441,849,057,7
COP (3)3,313,333,353,293,313,343,323,353,353,34
Heating STD versions (EN14511)Heating capacity (3)kW53,962,471,281,092,9105121140164193
Absorbed power (3)kW16,519,021,524,928,632,037,042,649,758,4
COP (3)3,263,283,313,253,253,293,283,303,303,31
SCOP (4)3,473,433,423,583,603,463,523,493,443,43
Energy Efficiency (4)%136134134140141135138137135134
Energy Class (5)A+A+A+A+------
CompressorQuantityn°2222222244
Refrigerant circuitsn°1,01,01,01,01,01,01,01,02,02,0
Capacity stepsn°SteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessStepless
EvaporatorWater flowl/s2,382,753,133,564,094,665,346,207,248,53
Pressure dropskPa41403239474035443330
Water connections"G1 ½"1 ½"2 ½"2 ½"2 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 currentA4747565668749191115135
Max. starting currentA130130177177191241232232247302
Unit with pumpPump available static pressurekPa140135140125135180180165165150
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 versionsPa706010080758080807565
SSL versionsPa7060959080808080------
MC versionsPa60659580807075757575
MC/SSL versionsPa6565908580757575------
Sound pressureSTD versions (6)dB(A)63666666676868696868
STD versions with SL accessory (6)dB(A)61636464656666676666
SSL versions (6)dB(A)58,061,061,061,062,062,062,062,0------
MC versions (6)dB(A)62656565666767686767
MC versions with SL accessory (6)dB(A)60626363646565666565
MC/SSL versions (6)dB(A)57,060,060,060,061,061,061,061,0------
Weight STD versionsTransport weightkg6146887477567658571086109514491494
Operating weightkg6206957557657758701100111014701520

Dimensions

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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.
  • N.B. (1) Weights of SSL and WP versions are specified on technical brochure.
  • N.B. (2) Data of MC versions are specified on technical brochure.