TWV/MC 222÷602 S/H/P/XE

Home KTK Products Top line - Liquid Chillers and Heat Pumps >200kW AIRCOOLED LIQUID CHILLERS AND HEAT PUMPS TWV/MC 222÷602 S/H/P/XE
TWV/MC 222÷602 S/H/P/XE

TWV/MC 222÷602 S/H/P/XE

Very high energy efficiency aircooled liquid chillers with axial EC fans, Scroll compressors and plate exchanger

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The very high efficiency liquid Chillers of the TWV/MC 222÷602 S/H/P/XE series, with HFO-R1234ze refrigerant, are designed to satisfy the needs of medium and wide-sized service sector or industrial ambients.
They are used, combined with Fan Coil units, for the air conditioning of the rooms or to remove the heat developed during industrial processes.
Microchannel condensing coils on standard version provide higher efficiency levels (EER), as they ensure better heat exchange than conventional coils. Copper/aluminum coils are available on dedicated versions. Inverter control is available on circulating pumps for a further efficiency improvement.

The units are characterized by multi-compressor design on double cooling circuit, to reach high energy performances, reduction of current at start-up, elimination of inertial tanks and excellent silent functioning.
Are available as option the new EC Inverter fans with high available static pressure and efficiency.
The units are compliant to the ErP Regulation.

Versions

  • TWV/MC - Very high efficiency cooling only with MICROCHANNEL condensing coils
  • TWV - Very high efficiency cooling only with CuAl condensing coils

Power range

  • 223-618 kW
  • 63.0-176 Ton

Features

  • Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
  • Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
  • Axial fans directly coupled to an Inverter three-phase electric motor with external rotor. A safety fan guard is fitted on the flow discharge. The EC Inverter fans allow continuous and efficient operation of the unit with an outdoor air temperature as low as -20°C in cooling. They also allow to reduce the sound level, especially at night.
  • Condenser made of aluminum MICROCHANNEL coils or copper tube and aluminum finned coils.
  • 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.
  • Electronic expansion valve.
  • Electronic high and low pressure gauges.
  • HFO-R1234ze refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuses or magnetothermic switches, thermal protection relays for compressors and thermocontacts for fans.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • SL Unit silencement
  • RFM Cooling circuit shut-off valve on discharge line
  • 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
  • ECH EC Inverter fans with high available static pressure
  • TXB Coil with epoxy treatment
  • TX Coil with pre-coated fins
  • EWR Right-side external water connections
  • EWB External water connections on rear side
  • PS Single circulating pump
  • PSI Inverter single circulating pump
  • PD Double circulating pump
  • PDI 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
  • FN Antifreeze heater for pipes
  • FG Antifreeze heater for single pump and pipes
  • FM Antifreeze heater for double pump and pipes
  • 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
  • GDS Leak detector
  • MN High and low pressure gauges

Loose accessories

  • CR Remote control panel
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
222272342402492602
Cooling MC versionCooling capacity (1)kW223270337415503618
Absorbed power (1)kW64,978,0100121150183
EER (1)3,443,463,373,433,353,38
Cooling MC version (EN14511)Cooling capacity (1)kW223270337415503618
Absorbed power (1)kW65,478,5101122151184
EER (1)3,413,433,343,403,333,35
SEER (2)5,405,415,215,335,465,41
Energy Efficiency (2)%213213205210215213
Cooling CuAl versionCooling capacity (1)kW222268333412501616
Absorbed power (1)kW66,079,0102122151185
EER (1)3,363,393,263,383,323,33
Cooling CuAl version (EN14511)Cooling capacity (1)kW222268333412501616
Absorbed power (1)kW66,579,5103123152186
EER (1)3,343,363,243,353,303,31
SEER (2)5,235,245,085,155,405,33
Energy Efficiency (2)%206207200203213210
CompressorQuantityn°2+22+22+22+23+33+3
Refrigerant circuitsn°222222
Capacity stepsn°444466
Unitary absorbed powerkW14,216,722,426,622,127,2
EvaporatorWater flowl/s10,5812,7715,8719,6423,8829,36
Pressure dropskPa181919202022
Water connectionsDN100100100150150150
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA179227275338412504
Max. starting currentA377445507653644818
Unit with pumpPump available static pressurekPa126114116107136111
Water connectionsDN100100100150150150
ECH fan available static pressureMC versionPa606565606060
Sound pressureMC version (3)dB(A)707274757576
MC version with SL accessory (3)dB(A)686971727273
Weights MC versionsTransport weightkg301636993890459856656496
Operating weightkg306037503950468057906610

Dimensions

222272342402492602
LMC-CuAlmm450058505850720085509900
WMC-CuAlmm225022502250225022502250
HMC-CuAlmm255025502550255025502550

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.
  • N.B. (1) Data of CuAl versions are specified on technical brochure.