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JWA 051÷172 S/IK/P/A


JWA 051÷172 S/IK/P/A


_ktk_icon_plate.png _ktk_icon_microchannel.png _icon_A_CLASS_2018_KTK_cooling.png _icon_A_CLASS_2018_KTK_heating.png _ktk_icon_refrigerant_R410A.png ktk_icon_refrigerant_R452B.png ktk_icon_refrigerant_R454B.png _ktk_icon_versions_cooling_only.png _ktk_icon_compressor_Scroll_inverter.png _ktk_icon_axial_fan.png

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.


  • JWA - Solo raffreddamento
  • JWA/MC - Solo raffreddamento con batteria MICROCANALE
  • JWA/WP - Reversible Heat Pump
  • JWA/SSL - Super silenced cooling only
  • JWA/MC/SSL - Super silenced cooling only with MICROCHANNEL condensing coil
  • JWA/WP/SSL - Super silenced reversible Heat Pump

Power range

  • 49.9-179 kW
  • 14.0-51.0 Ton


  • Self-supporting galvanized steel frame protected with additional protection achieved via polyester powder painting.
  • 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.