WOPU 0120÷0280


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New generation Chilled Water units characterized by the combination of two parts: the upper cooling module which includes an high performing coil, filters, electrical box, modulating valve and the newest EC Inverter Plug-Fans are housed in a dedicated module optimized for minimum air pressure drops and reduced electrical absorbed power. The fan module, normally configured "fully open" for installation under the raised floor, can be provided with panels for installation above the raised floor.
Unit supervision is developed by means of Modbus RTU protocol over RS485
serial interface as standard configuration. Other communication protocols and
interfaces are available as option.
These units are designed to operate with high water temperature (14/20 °C) despite being possible, with a dedicated option, to operate with conventional water temperature (7/12 °C).


  • WOPU/C - Underfloor air discharge
  • WOPU/U - Underfloor air discharge
  • WOPU/E - Underfloor air discharge
  • WOPU/D - Underfloor air discharge
  • BFU - Fan module for underfloor version
  • BFM - Fan module for above the floor version

Power range

  • 117-282 kW
  • 33.0-80.0 Ton

Factory fitted accessories

  • SW Low water temperature operation 7/12°C
  • DPS Double power supply
  • AT Constant air flow regulation control
  • AT/P Constant available static pressure regulation control
  • PF Differential pressure switch filters control
  • ES Electrical heater with step regulation
  • UMI Electrodes steam humidifier
  • SA Water alarm sensor
  • 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
  • MV 2 way modulating valve
  • MVP 2 way modulating and balancing valve with flow meter, pressure independent
  • FME Flow meter
  • EM Energy meter
  • RE Adjustable minimum/maximum voltage and phase control relay
  • OW Outlet water temperature sensor

Loose accessories

  • MP Condensate drain pump
  • MP/U Condensate and humidifier drain pump
  • SB Fire sensor
  • SC Smoke sensor
  • CR Remote control panel
  • ZP Adjustable baseframe with shock absorbers (mod. B only)
  • BA Top vertical intake plenum with F7 efficiency filter (mod. B only)
  • BU Top frontal intake plenum with grid
  • BV Top discharge/intake plenum with damper
Performances - water temperature 14°C/20°CTotal cooling capacity (1)kW117148189239282
Sensible cooling capacity - Max. (1)kW117148189239282
Net sensible cooling capacity (1)kW114145185233274
SHR (1)%100%100%100%100%100%
Water flow (1)l/s4,65,97,59,511,2
Total pressure drops (1)kPa5452385048
Performances with SW accessory - water temperature 7°C/12°CTotal cooling capacity (2)kW102131165207244
Sensible cooling capacity - Max. (2)kW86,4110140173209
Net sensible cooling capacity (2)kW83,8107136167201
SHR (2)%85%84%85%84%86%
Water flow (2)l/s4,96,27,99,911,7
Total pressure drops (2)kPa6058425350
Fan sectionFans22334
Air flow (3)m³/h2050025500330004100050000
Total pressure drops (2)kPa6058425350
Absorbed power (3)kW2,63,34,26,07,6
FiltrationLevel according to EN779M5M5M5M5M5
Level according to ISO 16890ePM10[50%]ePM10[50%]ePM10[50%]ePM10[50%]ePM10[50%]
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50
Sound pressureWOPU - Underfloor (4)dB(A)5457565760
Electrical heatingSteps22222
Electrical powerkW15,015,022,522,530,0
Electrodes steam humidifierNominal steam productionkg/h815151515
Nominal powerkW6,011,311,311,311,3
Dimensions and weightsDimensions and weights     
Cooling ModuleTransport weightkg442561675839948
Operating weightkg421535644803906
Fans ModuleTransport weightkg173204260307365
Operating weightkg153178229270324


Cooling ModuleLmm17502225262531003500
Fans ModuleLmm17502225262531003500
H (5)mm600600600600600


  • 1 Ambient air temperature 35°C - R.H. 30%, water temperature 14°C/20°C.
  • 2 Ambient air temperature 24°C - R.H. 50%, water temperature 7°C / 12°C.
  • 3 Air flow calculated with Available Static Pressure of 20 Pa and Fan Module fully open, raised floor h. 900 mm.
  • 4 Sound pressure level calculated in free field conditions at 1,5 m height and 2 m distance. According to ISO 3744.
  • 5 Adjustable up to 960 mm raised floor height.