JWA 081÷211 VV/H/A
High efficiency air cooled liquid chillers with axial fans, (Inverter) Screw compressor and shell and tube exchanger
The units are compliant to the ErP 2021 Regulation for process cooling application; for comfort cooling application they are compliant if provided with EC or ECH accessory (EC Inverter fans).
Versions
- JWA - Cooling only
- JWA/MC - Cooling only with MICROCHANNEL condensing coils
- JWA/SSL - Super silenced cooling only
- JWA/MC/SSL - Super-silenced cooling only with MICROCHANNEL condensing coils
Power range
- 79,0-211 kW
- 22,0-60,0 Ton
Features
- Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
- Screw compressor with built-in oil separator, suction filter, crankcase heater, oil sight glass, thermal protection and stepless capacity steps.
- Axial fans directly coupled to an electric motor with external rotor.
- Condenser made of copper tube and aluminum finned coils or aluminium MICROCHANNEL coils.
- Shell and tube evaporator with one independent circuit on the refrigerant side and one on the water side.
- Cooling circuit shut-off valves on discharge and liquid line.
- Electronic expansion valve.
- Electronic high and low pressure gauges.
- 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 0 °C. 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.
- Microprocessor control and regulation system.
Accessories
Factory fitted accessories
- IM Automatic circuit breakers
- RE Adjustable minimum/maximum voltage and phase control relay
- SL Unit silencement
- DSV Double relief safety valve with changeover switch on the high pressure side for each refrigerant circuit
- DSVHL Double relief safety valve with changeover switch on the high and on the low pressure side of each refrigerant circuit
- 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
- HRT/S Total heat recovery in series
- TX Coil with pre-coated fins
- TXB Coil with epoxy treatment
- EW External water connections
- SP Inertial tank
- PU Single circulating pump
- PUI Inverter single circulating pump
- PD Double circulating pump
- PDI Inverter double circulating pump
- SPU Inertial tank and single circulating pump
- SPUI Inertial tank and Inverter single circulating pump
- SPD Inertial tank and double circulating pump
- SPDI Inertial tank and 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
- FX Antifreeze heater for evaporator and pipes
- FQ Antifreeze heater on evaporator/tank and pipes
- FZ Antifreeze heater for evaporator, single pump and pipes
- FH Antifreeze heater for evaporator, double pump and pipes
- FU Antifreeze heater for evaporator/tank, single pump and pipes
- FD Antifreeze heater for evaporator/tank, double pump and pipes
- IQ Inverter on one compressor
- SS Soft start
- WM Web Monitoring - Wireless remote monitoring (GPRS/EDGE/4G/TCP-IP)
- 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
- CP Potential free contacts
- 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
- FL Flow switch