JWA 051÷172 S/K/P/AF

Home KTK Products Junior line - Small and medium size liquid Chillers and Heat Pumps AIR COOLED LIQUID CHILLERS AND HEAT PUMPS JWA 051÷172 S/K/P/AF
JWA 051÷172 S/K/P/AF

JWA 051÷172 S/K/P/AF

High efficiency air cooled liquid Chillers and Heat Pumps with axial fans, Scroll compressors and plate exchanger

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The units are compliant to the ErP Regulation.
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

Power range

  • 51,0-183 kW
  • 15,0-52,0 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.
  • Functioning in heating mode with outside air temperature down to -15 °C.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • RE Adjustable minimum/maximum voltage and phase control relay
  • 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%
  • 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
  • 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
  • HYM Hybrid systems management
  • DHW Domestic hot water management
  • 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