TWA/EP 172-542.1 S/K/P

Home KTK Products Top line - Liquid Chillers and Heat Pumps >200kW AIRCOOLED 4-PIPE MULTIFUNCTIONAL UNITS TWA/EP 172-542.1 S/K/P
TWA/EP 172-542.1 S/K/P

TWA/EP 172-542.1 S/K/P

Aircooled 4-Pipe multifunctional units with axial fans, Scroll compressors and plate exchangers

_icona_clint_solo_raffreddamento_2024.png _icona_clint_solo_riscaldamento_2024.png _icona_clint_solo_raffreddamento-riscaldamento_2024.png _icona_clint_compressore_scroll_2024.png _icona_clint_fan_assiale_2024.png _icona_clint_exchanger_plate_2024.png _icona_clint_solution_4P_2024.png _icona_clint_solution_DHW_2024.png _icona_clint_solution_web_monitoring_2024.png _icona_clint_refrigerant_R410A_2024.png _icona_clint_refrigerant_R452B_2024.png _icona_clint_refrigerant_R454B_2024.png

ENERGYPOWER is the range of high efficiency multifunctional units for 4-Pipe systems.
The units TWA/EP 172-542.1 S/K/P feature R410A refrigerant and Scroll compressors activated in series based on the requested thermal load, to reach high EER/COP/TER and SEER/SCOP energy values. The units are characterized by double cooling circuit. Thanks to the advanced control system, the units can simultaneously fulfill the heating, cooling and domestic hot water request of the building. The unit can manage the opposed thermal loads at the same time and reach the highest possible efficiency.
Are available as option the axial EC Inverter fans and the new EC Inverter fans with high available static pressure.
The units are designed for hot water production up to 55°C.
The models 604-P÷1404-P are compliant to ErP Regulations. The models 1604-P÷2004-P are compliant to ErP 2021 Regulations for comfort cooling application if provided with EC or ECH accessory (EC Inverter fans).
On request, units can be supplied with R452B or R454B refrigerant.

Versions

  • TWA/EP - Multifunctional unit
  • TWA/EP/SSL - Super silenced multifunctional unit

Power range

  • 167-507 kW
  • 48.0-144 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.
  • Copper tube and aluminum finned coils with hydrophilic treatment.
  • Condenser 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. On the units it is always installed an antifreeze 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. On the units it is always installed an antifreeze heater.
  • 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, 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 in cooling mode. 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.
  • Functioning in heating mode with outside air temperature down to -15 °C.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • SL Unit silencement
  • RFM Cooling circuit shut-off valve on discharge line
  • RFL Cooling circuit shut-off valve on liquid 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
  • PSC Single circulating pump cooling side
  • PSIC Inverter single circulating pump cooling side
  • PDC Double circulating pump cooling side
  • PDIC Inverter double circulating pump cooling side
  • PSH Single circulating pump heating side
  • PSIH Inverter single circulating pump heating side
  • PDH Double circulating pump heating side
  • PDIH Inverter double circulating pump heating side
  • PSC+PSH Single circulating pump cooling side + heating side
  • PSIC+PSIH Inverter single circulating pump cooling side + heating side
  • PDC+PDH Double circulating pump cooling side + heating side
  • PDIC+PDIH Inverter double circulating pump cooling side + heating side
  • GS Single circulating pump gasket for glycol >30%
  • GD Double circulating pump gaskets for glycol >30%
  • GH Single circulating pump cooling side + heating side gaskets for glycol > 30%
  • GY Double circulating pump cooling side + heating side gaskets for glycol > 30%
  • FNC Antifreeze heater for pipes cooling side
  • FGC Antifreeze heater for single pump and pipes cooling side
  • FMC Antifreeze heater for double pump and pipes cooling side
  • FNH Antifreeze heater for pipes heating side
  • FGH Antifreeze heater for single pump and pipes heating side
  • FMH Antifreeze heater for double pump and pipes heating side
  • SS Soft start
  • TS Touch Screen Interface
  • 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
  • IAA Remote set-point, 4-20mA signal
  • IAS Remote signal for second set-point activation
  • IAV Remote set-point, 0-10V signal
  • 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
  • RP Coils protection metallic guards
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
172212222242272302342.1392.1402.1492.1542.1
Cooling onlyCooling capacity (1)kW167190218241264301332385428472507
Absorbed power (1)kW5769758593104116129143166188
EER (1)2,932,752,912,842,842,892,862,982,992,842,70
Cooling only (EN14511)Cooling capacity (1)kW167190218241264301332385428471507
Absorbed power (1)kW5870768694105117130145168190
EER (1)2,892,722,872,802,802,862,832,952,952,802,67
SEER (2)4,144,224,184,174,224,194,164,194,344,384,40
Energy Efficiency (2)%163166164164166165163165171172173
Heating onlyHeating capacity (3)kW180204231257281318379439478541587
Absorbed power (3)kW556472798697113129143158175
COP (3)3,273,193,213,253,273,283,353,403,343,423,35
Heating only (EN14511)Heating capacity (3)kW180204231257281318379439478541587
Absorbed power (3)kW556472798697113129143158175
COP (3)3,273,193,213,253,273,283,353,403,343,423,35
SCOP (4)3,523,363,653,583,433,633,393,263,433,603,64
Energy Efficiency (5)%138131143140134142133127134141143
Cooling + HeatingCooling capacity (5)kW170195214243270303335386427491542
Heating capacity (5)kW220255281318351396440503558636703
Absorbed power (5)kW506067758193105117131145161
TER (5)7,807,507,397,487,677,527,387,607,527,777,73
Cooling + Heating (EN14511)Cooling capacity (5)kW170195214243270303335386427490541
Heating capacity (5)kW220255281318351396441504559637703
Absorbed power (5)kW516269778395108120135149165
TER (5)7,597,327,217,327,487,367,207,417,317,557,54
CompressorQuantityn°44444444444
Refrigerant circuitsn°22222222222
Capacity stepsn°44444444444
Evaporator - cooling sideWater flowl/s7,969,0610,3911,4912,5814,3515,8218,3520,4022,5024,16
Pressure dropskPa33,534,339,239,148,341,348,048,553,757,941,6
Water connectionsDN100100100100100100100100125125150
Condenser - heating sideWater flowl/s8,719,8711,1812,4413,6015,3918,3421,2423,1326,1828,40
Pressure dropskPa3637403138344846554753
Water connectionsDN100100100100100100100100125125150
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA133151171186201227241288328372408
Max. starting currentA301328347400415466480557597706742
STD version with SL accessoryFann°444444688810
Air flowm³/s22,422,421,321,321,323,632,342,642,642,653,0
Unit with pump - cooling sidePump nominal powerkW3,03,03,03,03,04,04,05,55,55,57,5
Pump available static pressurekPa17516515013511513510513511580155
Expansion vessell1818181818181818181818
Water connectionsDN100100100100100100100100125125150
Unit with pump - heating sidePump nominal powerkW3,03,03,03,03,04,04,05,55,55,57,5
Pump available static pressurekPa17516515013511513510513511580155
Expansion vessell1818181818181818181818
Water connectionsDN100100100100100100100100125125150
Sound pressureSTD version (6)dB(A)7070717171737474747676
With SL accessory (6)dB(A)6767686868707171717373
SSL version (6)dB(A)6464656565666767677070
Weight STD versionsTransport weightkg22532279239724392469323234674394457445724639
Operating weightkg23532379249725492579336236074544472447724879

Dimensions

172212222242272302342.1392.1402.1492.1542.1
LSTDmm33503350335033503350500050006200620062007200
SSLmm33503350335050005000500062006200720072007200
WSTD/SSLmm22002200220022002200220022002200220022002200
HSTD/SSLmm21002100210021002100210021002100210021002100

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. 813/2013.
  • 5 Chilled water from 12 to 7 °C, heated water from 40 to 45 °C.
  • 6 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • N.B. (1) Weights of SSL version are specified on technical brochure.