TWA/EP 362÷1492 VV/Y

Home KTK Products Top line - Large size liquid Chillers and Heat Pumps AIR COOLED 4-PIPE MULTIFUNCTIONAL UNITS TWA/EP 362÷1492 VV/Y
TWA/EP 362÷1492 VV/Y

TWA/EP 362÷1492 VV/Y

High efficiency air cooled 4-Pipe multifunctional units with EC Inverter axial fans, Inverter Screw compressors and shell and tube exchangers

_icona_clint_solo_raffreddamento_2024.png _icona_clint_solo_riscaldamento_2024.png _icona_clint_solo_raffreddamento-riscaldamento_2024.png _icona_clint_compressore_screw_inverter_2024.png _icona_clint_fan_assiale_inverter_2024.png _icona_clint_exchanger_shell_and_tube_2024.png _icona_clint_solution_4P_2024.png _icona_clint_solution_DHW_2024.png _icona_clint_solution_web_monitoring_2024.png _icona_clint_refrigerant_R134a_2024.png _icona_clint_refrigerant_R513A_2024.png

ENERGYPOWER is the range of high efficiency multifunctional units for 4-Pipe systems.
The units TWA/EP 362÷1492 VV/Y, with R134a refrigerant, are provided with latest generation of Inverter Screw compressors and EC Inverter axial fans, to reach high EER/COP/TER and SEER/SCOP energy values. 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. ENERGYPOWER units make the traditional layout of the technical plants easier because the production of thermal energy for the several users are joint in one unit only; the result is an advantage in terms of installation, maintenance and management and in the meantime of the comfort needs.
Are available as option the new EC Inverter fans with high available static pressure and efficiency.
On request, units can be supplied with R513A refrigerant.


The units are designed for medium temperature hot water production (up to 55°C).
The units are compliant to the ErP Regulation.

Versions

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

Power range

  • 278-1133 kW
  • 79.0-322 Ton

Features

  • Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
  • Screw Inverter compressors with built-in oil separator, suction filter, crankcase heater, oil sight glass and thermal protection.
  • EC Inverter axial fans directly coupled to an Inverter three-phase electric motor with external rotor and equipped with an external nozzle in order to improve air distribution in the condensing and evaporating compartment. They attenuate the sound level of the unit using a continuous regulation of fans rotation speed and allow the cooling operation of the unit up to outside air temperatures of -20 °C.
  • Copper tube and aluminum finned coils with hydrophilic treatment.
  • Shell and tube condenser, with two independent circuits on the refrigerant side and one on the water side, complete with water differential pressure switch.
  • 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.
  • R134a refrigerant. On request R513A refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuses, 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
  • PFC1 Power factor correction condensers (cosφ 0,95)
  • 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
  • BT Low water temperature kit
  • ECH EC Inverter fans with high available static pressure
  • PUC Single circulating pump cooling side
  • PUIC Inverter single circulating pump cooling side
  • PDC Double circulating pump cooling side
  • PDIC Inverter double circulating pump cooling side
  • GS Single circulating pump gasket for glycol >30%
  • GD Double circulating pump gaskets for glycol >30%
  • FI Antifreeze heater for evaporator and condenser
  • 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
  • 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
  • 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
  • RP Coils protection metallic guards
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
  • FL Flow switch
362412482552632742882108212921492
Cooling onlyCooling capacity (1)kW2783123664234845646768229781133
Absorbed power (1)kW85,996,9109128145172205247304354
EER (1)3,233,223,363,303,343,283,313,333,213,20
Cooling only (EN14511)Cooling capacity (1)kW2773113654224835636758219771132
EER (1)3,193,173,303,253,293,243,263,283,173,15
SEER (2)4,874,874,874,894,884,894,924,894,864,86
Energy Efficiency (2)%192192192193192193194193191191
Heating onlyHeating capacity (3)kW2833203754314905726728389901156
Absorbed power (3)kW82,987,999,9117131154185220260302
COP (3)3,413,643,753,683,743,723,643,813,803,83
Heating only (EN14511)Heating capacity (3)kW2843213764324915736738399911157
COP (3)3,373,583,693,633,683,663,593,743,723,76
SCOP (4)3,523,783,763,763,754,124,064,144,354,46
Energy Efficiency (4)%138148147147147162159163171175
Cooling + HeatingCooling capacity (5)kW2753183704294935766868369971182
Heating capacity (5)kW358405469543622727864105512601494
TER (5)7,628,358,518,498,628,638,718,668,578,57
Cooling + Heating (EN14511)Cooling capacity (5)kW2743183694284925756858359961181
Heating capacity (5)kW358405469543622727864105512601494
TER (5)7,478,208,348,328,468,498,558,538,428,40
CompressorQuantityN°2222222222
Refrigerant circuitsN°2222222222
Capacity stepsN°SteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessSteplessStepless
Evaporator - cooling sideWater flowl/s13,2514,8717,4420,1623,0726,8832,2239,1846,6154,00
Pressure dropskPa33405148484648475264
Water connectionsDN100100125125125150150150150200
Condenser - heating sideWater flowl/s13,6915,4818,1420,8623,7127,6832,5240,5547,9155,94
Pressure dropskPa39485853535150698269
Water connectionsDN100100125125125150150150150200
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA180215247291351396450601660750
Max. starting currentA134158181214256289331438480543
Unit with pumpPump available static pressurekPa185160160140165155130150115150
Water connectionsDN100100125125125150150150150200
Sound pressureSTD version (6)dB(A)77777778787879808080
With SL accessory (6)dB(A)73737475747576767676
SSL version (6)dB(A)67676769696969727272
Weight STD versionsTransport weightkg443045755160581763377345864598351023510905
Operating weightkg4630478055806290679079109360106201114012170

Dimensions

362412482552632742882108212921492
LSTDmm55505550670077508900890010050111001110011100
SSLmm670067007750775089001005011100122501225012250
WSTD/SSLmm2200220022002200220022002200220022002200
HSTDmm2360236023602360236027502750275027502750
SSLmm2360236023602360275027502750275027502750

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 Acqua refrigerata da 12 a 7 °C, acqua riscaldata da 40 a 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.