MRA/K 15÷131

Aircooled condensing units and reversible condensing units with radial fans and Rotary/Scroll compressor for indoor ducted installation

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The indoor condensing units and reversible condensing units of the MRA/K 15÷131 series, with R410A refrigerant, are intended to satisfy the needs of small and medium-sized domestic or industrial systems with particular difficulty in positioning units outside the building.
With a prepainted plate structure, these units are combined with evaporators in split system air conditioning installations, allowing the rooms to be cooled and dehumidified or to be heated. They can also be used in combination with hydronic evaporating units, generally in air-conditioning applications.
They are equipped with Rotary/Scroll compressors and radial fans, with appreciable useful head, and they enable immediate and efficient use thanks to particular technical and design adjustments.
A wide range of accessories, factory fitted or supplied separately, complete the outstanding versatility and functionality of the series.


  • MRA/K - Cooling only
  • MRA/K/WP - Reversible Heat Pump

Power range

  • 4.5-37.0 kW
  • 1.3-10.0 Ton


  • Self-supporting prepainted steel frame.
  • Rotary/Scroll compressor with internal overheat protection and crankcase heater, if needed.
  • Double inlet radial fan statically and dynamically balanced directly driven by a electric motor (15÷81) or belt driven connected to a three-phase electric motor (91÷131).
  • Condenser made of copper tubes and aluminium finned coil, complete with drain pan for WP version only.
  • R410A refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuse and compressor remote control switch.
  • Microprocessor control and regulation system (WP only).

Factory fitted accessories

  • CC Condensing control down to -20 °C
  • TX Coil with pre-coated fins
  • VS Solenoid valve

Loose accessories

  • RP Coils protection metallic guards
  • AG Rubber shock absorbers
CoolingCooling capacity (1)kW4,55,66,88,09,210,813,215,819,121,226,430,936,6
Absorbed power (1)kW1,51,92,22,63,03,84,95,97,07,910,310,413,5
HeatingHeating capacity (2)kW4,85,97,38,49,711,313,716,819,922,027,433,240,9
Absorbed power (2)kW1,62,02,42,73,13,95,06,17,28,110,511,013,9
ConnectionsSuction lineØ mm16161616161618182222282828
Liquid lineØ mm10101010101012121212121212
Available static pressure Pa909080808080115115115115150150160
Electrical characteristicsPower supplyV/Ph/Hz230/1/50230/1/50230/1/50230/1/50230/1/50230/1/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50
Max. running currentA10121314172111141415273336
Max. starting currentA40466565828961646177146151148
Sound pressure  (3)dB(A)51515152535459596060626264
WeightsTransport weightkg120121123126131133190200202204313319334
Operating weightkg121122124127132134192203205207316322338




  • 1 Evaporating temperature 5 °C, ambient air temperature 35 °C.
  • 2 Average condensing temperature 40 °C, ambient air temperature 7 °C d.b./6 °C w.b.
  • 3 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • N.B. (1) Weights of WP version are specified on technical brochure.