JWR 7÷34 S/IK/P/A

Home KTK Products Junior line - Liquid Chillers and Heat Pumps <200kW AIRCOOLED LIQUID CHILLERS AND HEAT PUMPS JWR 7÷34 S/IK/P/A
JWR 7÷34 S/IK/P/A

JWR 7÷34 S/IK/P/A

A CLASS energy efficiency aircooled liquid Chillers and Heat Pumps with EC Inverter Plug-Fans, Inverter Scroll compressor and plate exchanger for indoor ducted installation

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The A CLASS indoor liquid Chillers of the JWR 7÷34 S/IK/P/A series, with R410A refrigerant and EC Inverter Plug-Fans, are designed for small and medium domestic or service sector systems with particular difficulty in positioning units outside the building.
With a prepainted plate structure, these units can be combined with Fan Coil units or with intermediate heat exchangers for process cooling applications.
These units are equipped with particular technical and design adjustments that enable an immediate and efficient use, in addition to remarkably quiet operation and a significant useful head of the fan.
A wide range of accessories, factory fitted or supplied separately, complete the outstanding versatility and functionality of the series.
The units are compliant to the ErP Regulation.
On request, units can be supplied with R452B or R454B refrigerant.

Versions

  • JWR - Cooling only
  • JWR/WP - Reversible Heat Pump

Power range

  • 6,0-36,0 kW
  • 1,7-10,0 Ton

Features

  • Self-supporting prepainted steel frame. Sound-proofed compressor compartment (14÷19).
  • DC INVERTER Scroll compressor with internal overheat protection, crankcase heater and soundproofing cover (14÷19).
  • High efficiency reverse blade EC INVERTER PLUG-FAN, with electronic speed control.
  • Condenser made of copper tubes and aluminium finned coil, complete with condensate drain pan for WP version only.
  • Evaporator AISI 96 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.
  • R110A refrigerant. On request R452B or R454B refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuses, compressors (7÷20) 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
  • 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