CHAXT/Y/A 1302÷6002
High efficiency air cooled liquid Chillers and Heat Pumps with axial fans, (Inverter) Screw compressors and shell and tube exchanger
The CHAXT/Y/A 1302÷6002 units, with R134a refrigerant, have extremely high efficiency levels due to reduced electrical absorption and a high efficiency of the compressor-exchanger combination.
The latest generation Screw compressors and the new design optimized in every detail ensure the reach of the highest efficiency. Furthermore, accessories as the Inverter control on Screw compressors, on circulating pumps and EC Inverter on fans are also available for getting the highest efficiency at part load.
On request, units can be supplied with R513A refrigerant.
Versions
- CHAXT/Y/A - Cooling only
- CHAXT/Y/A/WP - Reversible Heat Pump
Power range
- 227-1348 kW
- 65,0-383 Ton
Features
- Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
- Screw compressors 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.
- Shell and tube evaporator with two independent circuits on the refrigerant side and one on the water side, complete with water differential pressure switch.
- Cooling circuit shut-off valves on discharge and liquid line.
- Electronic expansion valve.
- Electronic high and low pressure gauges.
- R134a refrigerant. On request R513A 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 0 °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 -10 °C.
- 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
- HR Desuperheater
- HRT/S Total heat recovery in series
- HRT/P Total heat recovery in parallel
- TX Coil with pre-coated fins
- 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
- FB Antifreeze heater for evaporator/tank
- 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
- II Inverter on one compressor and soft start for other compressors
- ID Inverter on all compressors
- SS Soft start
- WM Web Monitoring - Wireless remote monitoring (4G)
- IS Modbus RTU protocol, RS485 serial interface
- IST Modbus TCP/IP protocol, Ethernet port
- ISBT BACnet IP protocol, Ethernet port
- ISB1 BACnet MSTP protocol, RS485 serial interface, BTL certified
- ISBT1 BACnet IP protocol, Ethernet port, BTL certified
- ISS SNMP protocol, Ethernet port
- MTS Master/Slave Network Management
- 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
- AG Rubber shock absorbers
- AM Spring shock absorbers
- FL Flow switch