TWA 202÷1352 VV/H/A

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TWA 202÷1352 VV/H/A

TWA 202÷1352 VV/H/A

A CLASS energy efficiency aircooled liquid chillers with axial fans, (Inverter) screw compressors and shell and tube exchanger

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The TWA 202÷1352 VV/H/A units, in A CLASS energy efficiency, with HFO-R1234ze refrigerant, are designed to provide an effective solution to highly selective system needs. The latest generation refrigerant HFO-R1234ze, with GWP<1 (Global Warming Potential), is the most environmentally sustainable refrigerant on the market.
The innovative heat exchangers, traditional or Microchannel, the Screw compressors and the new design optimized in every detail ensure the reach of the highest efficiency. Furthermore, accessories as the Inverter control on one or both Screw compressors, fans and on circulating pumps (EC Inverter) are also available for getting the highest efficiency at part load. The super silenced versions, obtained through soundproofing the compressor compartment and the whole structure and wider exchangers, are particularly suitable for installations where extremely quiet operations are essential for the ideal execution of the system.
Are available as option the new EC Inverter fans with high available static pressure and efficiency.
The models 1002÷1602 are compliant to the ErP 2021 Regulation for process cooling application; the models 1802÷6002 are compliant with EC or ECH accessory (EC Inverter fans).
The units are compliant to the ErP 2021 Regulation for comfort cooling application with EC or ECH accessory (EC Inverter fans).

Versions

  • TWA - Cooling only
  • TWA/MC - Cooling only with MICROCHANNEL coils
  • TWA/SSL - Super silenced cooling only
  • TWA/MC/SSL - Super silenced cooling only with MICROCHANNEL coil

Power range

  • 197-1353 kW
  • 56.0-385 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 tube and aluminum finned coils or aluminium MICROCHANNEL 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 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.

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
  • 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
  • HR Desuperheater
  • HRT/S Total heat recovery in series
  • HRT/P Total heat recovery in parallel
  • 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
  • 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 (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
202262312362412472552612722812982106212321352
Cooling STD versionCooling capacity (1)kW197261309366406464548608717809980106412281353
Absorbed power (1)kW638398116129147168189223249300333379422
EER (1)3,133,143,153,163,153,163,263,223,223,253,273,203,243,21
Cooling STD version (EN14511)Cooling capacity (1)kW197260308365405463547606714806978106112241348
EER (1)3,133,103,113,123,123,113,243,173,173,213,243,163,203,16
SEER (2)3,813,843,943,894,094,034,114,154,164,134,154,134,164,18
Energy Efficiency (2)%149151155153161158161163163162163162163164
SEER with EC or ECH accessory (2)4,174,204,394,264,554,554,574,564,574,574,584,554,554,55
Energy Efficiency with EC or ECH accessory (2)%164165173167179179180179180180180179179179
Cooling MC versionCooling capacity (1)kW197261309366406464548608717809980106412281353
Absorbed power (1)kW628196114126144165185219244294326371414
EER (1)3,183,223,223,213,223,223,323,293,273,323,333,263,313,27
Cooling MC version (EN14511)Cooling capacity (1)kW197260308365405463547606714806978106112241348
EER (1)3,183,173,183,173,193,173,303,243,233,283,303,223,263,22
SEER (2)3,853,883,953,934,104,044,124,164,174,144,164,134,184,19
Energy Efficiency (2)%151152155154161159162163164163163162164165
SEER with EC or ECH accessory (2)4,224,254,434,304,554,554,614,604,614,614,624,554,554,55
Energy Efficiency with EC or ECH accessory (2)%166167174169179179181181181181182179179179
CompressorQuantityn°22222222222222
Refrigerant circuitsn°22222222222222
Capacity stepsn°SteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessStepless
EvaporatorWater flowl/s9,4112,4714,7617,4919,4022,1726,1829,0534,2638,6546,8250,8458,6764,64
Pressure dropskPa3937323431283733404230384754
Water connectionsDN125125150150150150150150200200200200250250
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA2032753193554134675125976707317648319511039
Max. starting currentA29141748858664272378389694710911206124414501494
Unit with tank and pumpPump available static pressurekPa155185180155140180160145160140120170180155
Tank water volumel2000200020002000200020002000300030003000----
Water connectionsDN100100100100125125150150150150----
Sound pressureSTD version (3)dB(A)7576767777787878808182828484
With SL accessory (3)dB(A)7273737474757575777879798181
SSL version (3)dB(A)6768686969707070727374747676
WeightsTransport weight (4)kg2700321535404015412046255165526062407460899594351123011560
Operating weight (4)kg2790330036704180428048205430552065707880950099101180012190

Dimensions

202262312362412472552612722812982106212321352
LSTDmm4400500050005550555067006700670089001005011100122501340013400
SSLmm5000555055506700670089008900890010050111001225013400--
WSTD-SSL-MC-MC/SSLmm22002200220022002200220022002200220022002200220022002200
HSTDmm21002100210021002100210021002100210025502550255025502550
SSLmm210021002100210021002100210021002550255025502550--

Notes

  • 1 Chilled water from 12 to 7 °C, ambient air temperature 35 °C.
  • 2 Seasonal energy efficiency of cooling at low temperature. According to EU Regulation n. 2016/2281.
  • 3 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • 4 Unit without tank and pump.
  • N.B. (1) Weights of SSL versions are specified on technical brochure.
  • N.B. (2) Data of MC versions are specified on technical brochure.