JWA 24÷40 S/IK/P/A

Home KTK Products Junior line - Liquid Chillers and Heat Pumps <200kW AIRCOOLED LIQUID CHILLERS AND HEAT PUMPS JWA 24÷40 S/IK/P/A
JWA 24÷40 S/IK/P/A

JWA 24÷40 S/IK/P/A

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

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The liquid Chillers and Heat Pumps of the JWA 24÷40 S/IK/P/A series, with R410A refrigerant, are designed to satisfy the needs of small and medium domestic and service sector environments.
With a peraluman structure corrosion-resistant over time, these units can be combined with Fan Coil units or with intermediate heat exchangers for process cooling applications.
All units feature A CLASS energy efficiency and are equipped with Inverter control on Scroll compressor for a better efficiency at partial loads (SEER/IPLV/SCOP). The Microchannel condensing coil, available on the dedicated version, ensures an even higher efficiency (high EER), having a better heat exchange than traditional coils.
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

Power range

  • 26,0-48,0 kW
  • 7,3-14,0 Ton

Features

  • Structure with supporting frame, in peraluman and galvanized sheet. Sound-proofed compressor compartment.
  • DC INVERTER Scroll compressor with oil sight glass, internal overheat protection, crankcase heater and soundproofing cover.
  • Axial fans with low ventilation and special wing profile, directly coupled to external rotor motors.
  • Condenser made of copper tube and aluminum finned coils or aluminium MICROCHANNEL coils.
  • Evaporator AISI 316 stainless steel braze welded plates type, complete with water differential pressure switch. On the Heat Pump units it is always installed an antifreeze heater.
  • Electronic expansion valve.
  • R410A refrigerant. On request R452B or R454B refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuses and pump remote control switch.
  • 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 and high and low pressure transducers on cooling circuit.
  • Functioning in heating mode with outside air temperature down to -15 °C.
  • Microprocessor control and regulation system.
  • Advanced functions: remote set-point with 0-10V signal, remote set-point with 4-20mA signal, remote signal for second set-point activation, demand limit from digital input, management of hybrid systems, management of domestic hot water production.

Factory fitted accessories

  • BT Low water temperature kit
  • TX Coil with pre-coated fins
  • TXB Coil with epoxy treatment
  • PS Single circulating pump
  • GS Single circulating pump gasket for glycol >30%

Loose accessories

  • CR Remote control panel
  • IS Modbus RTU protocol, RS485 serial interface
  • RP Coils protection metallic guards
  • FP Coils protection metallic guards with filter
  • AG Rubber shock absorbers