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TWA 212÷1102 S/K

TWA 212÷1102 S/K

Air cooled liquid Chillers and Heat Pumps with axial fans, Scroll compressors and shell and tube exchanger

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  • Compressor: Scroll
  • Refrigerant: R410A, R452B, R454B
  • Exchangers: Shell and Tube

The liquid Chillers and Heat Pumps of the TWA 212÷1102 S/K series, with R410A refrigerant, are designed for large-sized service sector or industrial ambients.
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. The use of components built in large series makes them highly reliable and the management of a high number of compressors allows increased life span with reduction of machine stopping risks and easier maintenance operations.
Are available as option the new EC Inverter fans with high available static pressure and efficiency.


The cooling only units are compliant to the ErP 2021 Regulation for process cooling application; for comfort cooling application they are compliant if provided with EC or ECH accessory (EC Inverter fans). Heat Pump models 726÷13010 are compliant to the ErP Regulation; models 15010÷36012 are compliant if provided with EC or ECH accessory (EC Inverter fans).
On request, units can be supplied with R452B or R454B refrigerant.

Versions

  • TWA - Cooling only
  • TWA/WP - Reversible Heat Pump
  • TWA/SSL - Super silenced cooling only
  • TWA/WP/SSL - Super silenced reversible Heat Pump

Power range

  • 200-1062 kW
  • 57.0-302 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 electric motor with external rotor.
  • Condenser made of copper tubes and aluminium finned 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 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.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • RE Adjustable minimum/maximum voltage and phase control relay
  • SL Unit silencement
  • RFM Cooling circuit shut-off valve on discharge line
  • RFL Cooling circuit shut-off valve on liquid line
  • CT Condensing control down to 0 °C
  • 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
  • DS Desuperheater
  • HRT/P Total heat recovery in parallel
  • TX Coil with pre-coated fins
  • EW External water connections
  • PU Single circulating pump
  • PUI 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
  • FX Antifreeze heater for evaporator and pipes
  • FZ Antifreeze heater for evaporator, single pump and pipes
  • FH Antifreeze heater for evaporator, double pump and pipes
  • 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
  • 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
2122222422723023423624124424825626126827628629621102
CoolingCooling capacity (1)kW2002242482703023283674044455105515976847668629611062
EER (1)2,982,912,992,872,892,863,043,072,902,962,992,772,802,772,852,832,88
Cooling (EN14511)Cooling capacity (1)kW2002242482703023283674044455105505966837658619601061
EER (1)2,942,872,952,832,852,823,003,032,872,932,952,742,772,742,812,802,85
SEER (2)3,893,903,984,063,914,004,144,384,404,334,374,414,454,364,404,164,19
Energy Efficiency (2)%153153156159153157163172173170172173175171173163165
SEER with EC or ECH accessory (2)4,254,234,304,354,274,364,474,704,704,694,694,694,704,694,704,554,55
Energy Efficiency with EC or ECH accessory (2)%167166169171168171176185185185185185185185185179179
HeatingHeating capacity (3)kW22925228030433636240144251258162666879187898111001222
COP (3)3,223,153,182,953,092,953,093,143,153,153,103,063,153,103,153,123,15
Heating (EN14511)Heating capacity (3)kW22925228030533736340244351358262766979287998211011223
COP (3)3,173,103,132,903,052,903,043,103,123,113,053,003,103,053,103,083,10
SCOP (4)3,323,303,313,323,303,323,333,313,303,293,293,293,293,293,293,203,20
Energy Efficiency (4)%130129129130129130130129129129129129129129129125125
CompressorQuantityN°3+33+33+33+34+44+44+45+55+56+66+65+56+66+66+66+66+6
Capacity stepsN°666688888101081010101010
EvaporatorWater flowl/s9,5310,6811,8212,8714,3915,6317,4919,2621,2124,3126,2628,4532,6036,5141,0845,8050,62
Pressure dropskPa4542455048565545334354654655624752
Water connectionsDN100100100100100100100125125125125125150150150150150
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 currentA151164172187220235251272310351374410489544590682751
Max. starting currentA274296339354352402418404477518541598676756803917986
Unit with pumpPump available static pressurekPa150140195170180165150145135165150130130150125125100
Water connectionsDN100100100100100100100100100100100150150150150150150
Sound pressureSTD version (5)dB(A)7070707272727373727375767676767677
With SL accessory (5)dB(A)6767676969696970697072737373737374
SSL version (5)dB(A)64,065,065,066,065,065,067,066,067,068,069,070,070,069,070,0------

Dimensions

2122222422723023423624124424825626126827628629621102
LSTDmm28002800280028004000400040004000500050005000500050006200620072007200
SSLmm280028002800280040004000400040005000500050005000620072007200------
WSTDmm22002200220022002200220022002200220022002200220022002200220022002200
SSLmm220022002200220022002200220022002200220022002200220022002200------
HSTDmm21002100210021002100210021002100210021002100210021002100210021002100
SSLmm210021002100210021002100210021002100210021002100210021002100------

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 Heated water from 40 to 45 °C, ambient air temperature 7 °C d.b./6 °C w.b.
  • 4 Seasonal energy efficiency of heating at low temperature with average climatic conditions. According to EU Regulation n. 811/2013.
  • 5 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • N.B. (1) Weights of SSL and WP versions are specified on technical brochure.