TWA/FC 212÷1102 S/K/P

Aircooled liquid Chillers Free-Cooling with axial fans, Scroll compressors and plate exchanger

_ktk_icon_versions_cooling_only.png _ktk_icon_compressor_scroll.png _ktk_icon_axial_fan.png _ktk_icon_plate.png _ktk_icon_free_cooling.png _ktk_icon_refrigerant_R410A.png ktk_icon_refrigerant_R452B.png ktk_icon_refrigerant_R454B.png

The liquid Chillers of the TWA/FC 212÷1102 S/K/P series, with R410A refrigerant, provide advanced technology, flexible and reliable, through an intelligent control module which optimizes the operating times and the powers delivered by the Scroll compressors, according to the needs of the systems, both civil and industrial, where the production of chilled water is required in continuous service throughout the year. During the cold months, in FREE-COOLING operating mode, the liquid returning from the system is cooled directly, by way of the forced convection of outside air through the condensing coil, thus reducing the energy required for the Scroll compressors operation that the units are equipped with. A system of 3-way valves, controlled by the electronic microprocessor controller that manages the entire unit, can, depending on outside air temperature, operate in CHILLER, FREE-COOLING or MIXED (CHILLER and FREE-COOLING at the same time) mode. TWA/FC 212÷1102 S/K/P allows the reduction of inrush currents generated, the elimination of inertial accumulation tanks and an excellent silent functioning, as the fans adjust their speed to the actual load of the system, providing great benefits especially at night.
Are available as option the new EC Inverter fans with high available static pressure and efficiency.
The units are compliant to the 2021 ErP Regulation for process cooling application.
On request, units can be supplied with R452B or R454B refrigerant.


  • TWA/FC - Cooling only

Power range

  • 208-1102 kW
  • 59.0-313 Ton


  • Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
  • 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.
  • Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
  • Evaporator AISI 316 stainless steel braze welded plates type with two independent circuits on the refrigerant side and one on the water side, complete with water differential pressure switch.
  • Cooling circuit shut-off valve on liquid line in 302÷1102 models.
  • Electronic expansion valve.
  • Electronic high and low pressure gauges.
  • R410A refrigerant. On request R452B or R454B refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuses or magnetothermic switches, 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

  • SL Unit silencement
  • RFM Cooling circuit shut-off valve on discharge line
  • BT Low water temperature kit
  • EC EC Inverter fans
  • ECH EC Inverter fans with high available static pressure
  • TX Coil with pre-coated fins
  • PS Single circulating pump
  • PSI Inverter single circulating pump
  • PD Double circulating pump
  • PDI Inverter double circulating pump
  • SS Soft start
  • 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
  • ISL LonWorks protocol, FTT-10 serial interface
  • ISS SNMP protocol, Ethernet port
  • IAV Remote set-point, 0-10 V signal
  • IAA Remote set-point, 4-20 mA signal
  • IAS Remote signal for second set-point activation
  • IDL Demand limit from digital input

Loose accessories

  • MN High and low pressure gauges
  • CR Remote control panel
  • RP Coils protection metallic guards
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
CoolingCooling capacity (1)kW20823626329032836540144148353659066573882792010141102
Absorbed power (1)kW76878898108123132147163179199230266305340368412
EER (1)2,742,712,992,963,042,973,043,002,962,992,962,892,772,712,712,762,67
Cooling (EN14511)Cooling capacity (1)kW20623426028732536239843847953258565973181891110041102
Absorbed power (1)kW788991101111126135150167183204236273314349378412
EER (1)2,642,632,862,842,932,872,952,922,872,912,872,792,682,612,612,662,67
SEPR (2)5,045,035,025,055,015,065,025,515,535,525,545,565,585,555,535,525,51
Free-Cooling cycleAir temperature (3)°C-2,0-2,8-2,5-0,2-2,7-3,5-1,0-2,0-1,0-2,2-2,7-3,0-3,5-2,5-0,10,1-0,4
Absorbed power (3)kW7,07,010,510,514,014,014,014,017,517,517,517,521,024,528,031,531,5
Refrigerant circuits22222222222222222
Capacity steps44444446688888888
Water circuit.Water flowl/s11,0212,3813,8715,3117,3219,3421,2123,3325,5228,2831,0935,1138,8943,6448,5253,5158,13
Pressure dropskPa102126165124112106115100120121132148152172151162173
Water connectionsDN100100100100100100100100100125125125150150150150150
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA152166187199232249266282332365391438500561622699769
Max. starting currentA2762993543673654174334155005335586156787748359611031
Unit with pumpPump available static pressurekPa15011570100958010511585110906016012512590110
Water connectionsDN100100100100100100100100100125125125150150150150150
Sound pressureSTD version (4)dB(A)7070717373737475747476787879787879
With SL accessory (4)dB(A)6867687070707172717174757575757576
WeightsTransport weightkg21752185236024352990302032203510392041804220506052405830688074107530
Operating weightkg23102320250026303190322034703770425045204560546056506320760082208340




  • 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.