URT/EC/ECO 051÷212 S/K

Double Skin packaged Roof Top units with Scroll compressors, EC Inverter Plug-Fans and Economizer

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The double skin packaged Roof Top units of this series are the ideal solution for the air conditioning of wide surface areas for public use such as halls, shopping centres, cafeterias, restaurants and health centres, or for industrial environments such as food processing or preservation centres. Those units feature Scroll compressors with R410A refrigerant and EC Inverter Plug-Fans. The EC Inverter Plug-Fans with high energy efficiency backward blades both for intake as well as delivery are managed by an electronic control adjusting fans' rotational speed to adapt the air flow to the system capacity.
Equipped with extruded aluminium alloy sections and 50mm-thick sandwich panelling, these units are available in Cooling only and Reversible Heat Pump version.
The flat or pocket filters help to keep the air quality at a suitable level in order to guarantee appropriate hygiene standards.
The ECO units have an high level of modularity and adaptability to every plant-engineering need: these units feature, in addition to the basic sections, an ECONOMIZER automatically controlled both in FREE-COOLING or FREE-HEATING.
The unit can be equipped, as an option, with the innovative Thermodynamic Coil-Boost Heat Recovery to achieve better performance and efficiency both in cooling and heating up to 15%.
The units are compliant to the ErP Regulation.


  • URT/EC/ECO - Cooling only with EC Inverter Plug-Fans and Economizer
  • URT/EC/WP/ECO - Reversible Heat Pump with EC Inverter Plug-Fans and Economizer

Power range

  • 58.0-252 kW
  • 17.0-72.0 Ton


  • Structure of base perimeter made of steel sheet elements galvanised. Frame made of extruded aluminium alloy profiles connected by 3 way joints. Assembling of the base to the frame is of dual support and grants the walking on the base panels installation without sticking out screws. 50mm thick sandwich panels made of prepainted steel sheet; water proofing granted by gaskets having shape memory for perfect seal up even after repeated removals. Section connection is effected by means of assembling conic stirrups and water proofing is granted by gaskets.
  • Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
  • Condenser and evaporator with copper tube and aluminium finned coil.
  • Delivery & intake radial fans coupled to 3-phase motors by V belt and variable pulley.
  • High efficiency delivery & intake reverse blade EC INVERTER PLUG-FANS, with electronic speed control to easily adapt to the system characteristics.
  • R410A refrigerant.
  • Electrical board includes: door interlocking isolator, fuses, thermal protection relays on compressors, thermocontacts for the fans of the condensing unit and contactors for the fan motors of the air handling unit.
  • Microprocessor for the automatic control of the unit.

Factory fitted accessories

  • IM Automatic circuit breakers
  • SL Unit silencement
  • THCB Thermodynamic Coil-Boost Heat Recovery (ECO only)
  • RFM Cooling circuit shut-off valve on discharge line
  • RFL Cooling circuit shut-off valve on liquid line
  • CT Condensing control down to 0 °C
  • CC Condensing control down to -20 °C
  • ECA EC Inverter fans on condensing section
  • TXC Condensing coil with pre-coated fins
  • TXE Evaporating coil with pre-coated fins
  • FT/M6 Soft bag filters efficency M6
  • FT/M7 Soft bag filters efficency F7
  • FT/M8 Soft bag filters efficency F8
  • FT/R6 Rigid bag filters efficency M6
  • FT/R7 Rigid bag filters efficency F7
  • FT/R8 Rigid bag filters efficency F8
  • FT/E Electrostatic filter
  • AT Constant air flow regulation control
  • AT/P Constant available static pressure regulation control
  • AT/C Control adjustment of the air flow according to the load
  • WS2 Hot water coil with 3-Way valve
  • EHG Electrical heater with step regulation
  • CH Enthalpic control (ECO only)
  • SQ Air quality sensor
  • SSA Active sanitation systems for air and rooms
  • PF Differential pressure switch filters control
  • 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
  • ISL LonWorks protocol, FTT-10 serial interface
  • ISS SNMP protocol, Ethernet port
  • IAV Remote set-point, 0-10 V signal
  • IAA Remote set-point, 4-20 mA signal
  • IAS Remote signal for second set-point activation
  • IDL Demand limit from digital input
  • CP Potential free contacts
  • RP Coils protection metallic guards

Loose accessories

  • MN High and low pressure gauges
  • CR Remote control panel
  • AG Rubber shock absorbers

Complementary sections

  • UM Section with preparation for Humidifier
  • UM/EN Section Humidifier with electrodes immersed
  • F/CD Condensation endothermic hot air generator with modulating gas burner
CoolingCooling capacity (1)kW57,965,877,687,498,6113129145168198252
Absorbed power (1)(2)kW19,421,824,626,230,837,840,443,354,661,585,1
Cooling (EN14511)SEER (3)3,653,683,863,823,903,843,713,813,883,763,78
Energy Efficiency (3)%143144151150153151145149152147148
HeatingHeating capacity (4)kW60,267,276,888,6101115133151173204262
Absorbed power (4)(2)kW16,817,920,222,825,232,234,040,045,750,470,5
Heating (EN14511)SCOP (5)3,223,233,313,313,263,233,203,293,333,323,24
Energy Efficiency (5)%126126129129127126125129130130127
Air treatment section (EC version)Air flowm³/s2,673,304,054,054,845,496,326,328,209,7912,31
Available static pressurePa250250250250250250250250250250250
Air intake section (EC version)Available static pressurePa100100100100100100100100100100100
Air flowm³/s2,673,304,054,054,845,496,326,328,209,7912,31
Condensing sectionCompressor22222333444
Refrigerant circuits11111111222
Capacity steps22222333444
Hot water coilHeating capacity (6)kW85100125125150175200200250300350
Air pressure dropsPa3031313131303636353557
Water flow (6)l/s2,032,392,992,993,584,184,784,785,977,178,36
Water pressure dropskPa4547484849445151535745
Water connections"G1­"½1­"½1"­½1"­½1"­½2"2"2"2"2 ½"2 ½"
Electrical heaterPower 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
Heating capacitykW1521272727414141414855
Max absorbed currentA2230393939595959596979
Electrical characteristics (EC version)Power 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 currentA55627480100105118136162201240
Max. starting currentA166181170195243200232278276343427
Sound pressure (EC version)EC version (7)dB(A)6869686869717272727272
With SL accessory (7)dB(A)6566656566686969696969




  • 1 Evaporator inlet air temperature 27 °C d.b./19 °C w.b.; ambient air temperature 35 °C.
  • 2 Excluded the power absorbed by fans of air treatment section.
  • 3 Seasonal energy efficiency of cooling. According to EU Regulation n. 2016/2281.
  • 4 Condenser inlet air temperature 20 °C, ambient air temperature 7 °C d.b./6 °C w.b.
  • 5 Seasonal energy efficiency of heating with average climatic conditions. According to EU Regulation n. 2016/2281.
  • 6 Inlet air temperature 20 °C, water temperature 70/60 °C.
  • 7 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • N.B. (1) Weights of WP versions are specified on technical brochure.