TWA/FC 202÷1062 VV/H

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TWA/FC 202÷1062 VV/H

TWA/FC 202÷1062 VV/H

Aircooled liquid Chillers Free-Cooling with axial fans, Screw (Inverter) compressors and shell and tube exchanger

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The liquid Chillers of the TWA/FC 202÷1062 VV/H series, with HFO-R1234ze refrigerant, offer innovative technology to meet the needs of large systems for both domestic as well as industrial applications requiring the production of cooled water continuously year-round. The latest generation refrigerant HFO-R1234ze, with GWP<1 (Global Warming Potential), is the most environmentally sustainable refrigerant on the market, and meets the strictest international environmental regulations.
During the cold months, in FREE-COOLING operating mode, the liquid returning from the system is cooled directly by forced convection of outdoor air through the condensing coil, thus saving energy by not operating the unit's Screw compressors. A 3-Way valve system is controlled by the electronic microprocessor controller, allowing functioning in CHILLER, FREE-COOLING or MIXED (simultaneously CHILLER and FREE-COOLING) modes.
Are available as option the new EC Inverter fans with high available static pressure and efficiency.
Units are compliant to ErP 2021 European Regulations for process cooling application if provided with EC or ECH accessory (EC Inverter fans).

Versions

  • TWA/FC - Cooling only

Power range

  • 232-1144 kW
  • 66.0-325 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.
  • Condenser made of copper tubes and aluminium finned coils combined with FREE-COOLING coils.
  • 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.
  • HFO-R1234ze 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 –20 °C. It also allows to reduce the sound level especially at night. It consists of a fans speed controller with continuous speed regulation, high and low pressure transducers on cooling circuit and an electrical heater on electrical board.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • 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
  • BT Low water temperature kit
  • EC EC Inverter fans
  • ECH EC Inverter fans with high available static pressure
  • TX Coil with pre-coated fins
  • 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%
  • 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 (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
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
  • FL Flow switch
2022623123624124725526127228129821062
CoolingCooling capacity (1)kW23229735040444451960468480189110441144
Absorbed power (1)kW6787107125142158187205239271338362
EER (1)3,463,413,273,233,133,283,233,343,353,293,093,16
Cooling (EN14511)Cooling capacity (1)kW23129534640144051660067879688510351132
Absorbed power (1)kW6889111128146161191211244277347374
EER (1)3,403,313,123,133,013,203,143,213,263,192,983,03
SEPR with EC or ECH accessory (2)5,595,575,525,635,505,675,635,665,715,745,505,50
Free-Cooling cycleAir temperature (3)°C2,00,01,31,0-0,5-0,50,5-1,0-0,5-0,5-1,00,0
Absorbed power (3)kW10,810,814,414,414,418,021,621,621,625,228,832,4
CompressorQuantityn°222222222222
Refrigerant circuitsn°222222222222
Capacity stepsn°SteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessStepless
Water circuit.Water flowl/s11,614,917,520,222,225,930,234,240,144,652,257,2
Pressure dropskPa77961431181327710412498108138169
Water connectionsDN100100100125125125150150150150200200
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA211275327355413467520605670731764831
Max. starting currentA299417496586642723791904947109112061244
Unit with tank and pumpPump available static pressurekPa148114117137158193146106162132112111
Tank water volumel200020002000200020002000200020003000---
Water connectionsDN100100100125125125150150150150200200
Sound pressureSTD version (4)dB(A)757676777778787880818282
With SL accessory (4)dB(A)727373747475757577787979
WeightsTransport weight (5)kg31503420402044104560544068007280842089001069011570
Operating weight (5)kg339037204400485050406010742079809420100001189012940

Dimensions

2022623123624124725526127228129821062
LSTDmm440044005550555055506700100501005010050100501225013400
WSTDmm220022002200220022002200220022002200220022002200
HSTDmm236023602360236023602360236023602750275027502750

Notes

  • 1 Chilled water (with ethylene glycol at 30%) from 15 to 10 °C, ambient air temperature 35 °C.
  • 2 Seasonal energy efficiency of high temperature process cooling according to EU Regulation No. 2016/2281.
  • 3 Ambient air temperature at which the cooling capacity indicated in point (1) is reached.
  • 4 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • 5 Unit without tank and pump.