UTW 63÷544

Ductable Fan Coil units with 3-Speed or EC Inverter radial fans

SOLO_FREDDO.png caldo_e_freddo1.png CENTRIFUGO11.png icon_EC_radial_fans_14.png H2O.png

These modular Fan Coil units are the ideal solution to meet the air treatment needs of systems including distribution through ducting or directly into the room and installation in false ceilings or in service rooms.
Part of an hydronic system equipped with a liquid Chiller, the modular ductable Fan Coil unit generates cool air silently and with instantaneous reaction. During the winter, if combined with a boiler or heat pump, it provides warm air, making it possible to meet home or business heating needs. A filter, which absorbs and retains dust in suspension, allows to keep the air quality at a suitable level and its easy removal enables continuous cleaning cycles to be carried out, which are particularly important in order to guarantee suitable hygiene standards in highly frequented rooms.
This product range, available for 2-Pipe and 4-Pipe systems, is complete with various
accessories such as: outdoor air intake plenum, mixing section with dampers room
delivery plenum for flexible ducts and electrical heating section. Units are available both
with 3-Speed and EC Inverter fans.The units equipped with EC Inverter motor are able to
modulate the air flow ensuring a perfect adaptability to the load without any temperature
fluctuations, achieving superior performance compared to the traditional solutions even
from energy consumption point of view.


  • UTW - Base unit
  • UTW/EC - Unit with EC Inverter fans

Power range

  • 4.6-43.0 kW
  • 1.3-12.0 Ton


  • Structure in galvanized sheet (63÷274) or in prepainted metal sheet (333÷544), entirely lined with heat/sound insulation material.
  • Radial type fan with double intake, statically and dynamically balanced to reduce vibration and noise to a minimum, directly coupled on single-phase 3-Speed electric motor (63÷274) or with belt and pulley transmission, connected to 3-phase single speed electric motor (333÷544).
  • Radial type fan with double intake and EC INVERTER fan type (63÷274).
  • Heat exchanger in copper pipes and aluminium fins, complete with air vent and drain pan.
  • Air filter made of recyclable synthetic material class EU3; inspection is foreseen from the bottom part (63÷274) or side part (333÷544).
  • Air bleed valves, positioned on the water connections of the coil, make it possible to bleed air from the coil.
  • Electrical board comprising a terminal board for wiring to room control panel and power supply.

Factory fitted accessories

  • AF Filtering section
  • WSF Hot water coil section for 4-Pipe system

Loose accessories

  • C Auxiliary condensate drain pan
  • CW Auxiliary condensate drain pan for units with WSF accessory
  • AF Filtering section
  • GRI/R Intake grid with air filter
  • BM Supply grid with adjustable fins
  • PR Intake plenum
  • PM Supply plenum
  • P3 Supply plenum for flexible ducts
  • WSF Hot water coil section for 4-Pipe system
  • EH1 Supplementary electrical heater section
  • EH2 Supplementary electrical heater section
  • SM Servo-motor for damper
  • SF Supply flange
  • DRA Wall mounted automatic electronic control panel
  • VR Wall mounted fan speed control panel
  • TA Wall mounted ambient thermostat
  • DRE Wall mounted electromechanic control panel
  • DRV Wall mounted automatic electronic control panel and base board (SRV+SPV)
  • SRV Wall mounted automatic electronic control panel
  • SPV Base board
  • IS Modbus RTU protocol, RS485 serial interface
  • BC Universal connecting terminal
  • V2 3-Way on/off valve for 2-Pipe system
  • V4 3-Way on/off valves for 4-Pipe system
  • MB Mixing box with damper
CoolingTotal cooling capacity (1)(2)kW4,67,59,110,513,115,720,725,931,738,142,8
Sensible cooling capacity (1)(2)kW3,56,07,18,49,813,016,720,124,629,633,2
Water flow (1)(2)l/h7911290156518062253270035604455545265537362
Pressure drops (1)(2)kPa1419211824242629142926
HeatingHeating capacity (2)(3)kW9,815,519,721,625,935,546,360,175,891,897,1
Water flow (2)(3)l/h8431333169418582227305339825169651978958351
Pressure drops (2)(3)kPa2317223525233234143934
Water connectionsIn / Out"G3/4"3/4"3/4"3/4"3/4"3/4"3/4"1 ¼"1 ½"1 ½"1 ½"
Additional coilHeating capacity (2)(3)kW6,810,911,513,516,020,322,247,458,464,075,1
Water flow (2)(3)l/h58593798911611376174619094076502255046459
Pressure drops (2)(3)kPa1011121514192310151014
Attacchi idraulici (In / Out)"G3/4"3/4"3/4"3/4"3/4"3/4"3/4"1 ¼"1 ¼"1 ¼"1 ¼"
Air flowMax (4)m³/h9501600160022002500290035005500680077009000
Med (4)m³/h800120013001800200023002600------------
Min (4)m³/h6008509001300140015002000------------
Air flow (EC version)Max (4)m³/h950160016002200250029003500------------
Min (4)m³/h530760810810114012001200------------
Available static pressureMax (4)Pa75908080859090150150150150
Med (4)Pa50505050507075------------
Min (4)Pa40404035405055------------
Available static pressure (EC version)Max (4)Pa7590808085115115------------
Min (4)Pa40404040404555------------
EH1 Electrical heaterPower supplyV/Ph/Hz400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50-----------
Absorbed powerkW3444666------------
Max. absorbed currentA4,38,78,78,713,013,013,0------------
EH2 Electrical heaterPower supplyV/Ph/Hz400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50------------
Absorbed powerkW6888121212------------
Max. absorbed currentA8,717,417,417,426,126,126,1------------
Electrical characteristicsPower supplyV/Ph/Hz230/1/50230/1/50230/1/50230/1/50230/1/50230/1/50230/1/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50
Max absorbed powerkW0,170,260,260,400,400,460,720,751,101,101,50
Max. absorbed currentA0,701,101,101,751,752,103,851,802,602,603,30
Electrical characteristics (EC version)Power supplyV/Ph/Hz230/1/50230/1/50230/1/50230/1/50230/1/50230/1/50230/1/50------------
Max absorbed powerkW0,170,230,280,310,450,480,68------------
Max. absorbed currentA1,271,651,981,983,003,003,00------------
Sound pressureMax (5)dB(A)5254545959606265687074
Med (5)dB(A)49505055555556------------
Min (5)dB(A)43434247464752------------
Sound pressure (EC version)Max (5)dB(A)52545459596062------------
Min (5)dB(A)43434242454544------------
WeightsTransport weightkg29424457656770168168173175
Operating weightkg27404255636568166166171173




  • 1 Ambient air temperature 27 °C d.b./19 °C w.b., water temperature 7/12 °C.
  • 2 Performances also valid for EC version.
  • 3 Ambient air temperature 20 °C d.b., water temperature 70/60 °C.
  • 4 3-phase single speed electrical motors for latest four sizes
  • 5 Sound pressure level measured at 1 m from the unit with reverberation time 0,5 s.
  • N.B. (1) Maximum operating pressure 1000 kPa.
  • N.B. (2) Maximum inlet water temperature 90 °C.
  • N.B. (3) Inhibited ethylene glycol can be added to the water.