TWA/EP 172-542.1 S/K/P

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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

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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