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A compact, easy to install, all-in-one solution for applications where a outdoor unit is not possible or not preferred. Ideal for office, high rise buildings, conservatory dwarf walls, hotel, home and light commercial air conditioning applications. Heats and cools.

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Home > Home And Garden > Air To Water Heat-pump > Air To Water Heat Pump Boilers Home / light commercial

Hitachi AquaFree RWM 4.0FSN1E heat-pump boiler (14.6 kW / 50000 Btu) 240V~50Hz

Our Price: £9,674.94


1 x Hitachi RWM 4.0FSN1E - Heat-pump outdoor unit

1 x Hitachi RAS 4.0HVRNE  - Heating exchanger indoor boiler module
1 x Thermostat control


HITACHI air conditioning AquaFREE system is a air source Heat pump Heating system for winter, and a partial cooling system for summer. The system consists of an Inverter Heat Pump outdoor unit and a hydraulic module indoor unit. The heat pump absorbs heat from outside and send it to the module or sends heat to the outside, and transfers the cooling to the water circuit by means of the AquaFREE module.
The AquaFREE air-conditioning system incorporates a set of technical benefits that make it one of the most attractive on the market. Right from the selection of the ideal type of equipment in each case, up to its maintenance, and through installation, start up and operation, AquaFREE always provides the best solution for every user, and greatly simplifies and eases the user’s selection process.
AquaFREE air source heat-pump systems provide great comfort, high reliability, rigorous design, low electrical consumption, and a small installation space. Types of Applications include: Radiant floor, radiators, hybrid radiators + radiant floor systems, and pool heating applications. A complete system suitable for under-floor, radiators, mixed systems and pool heating with capacities of no more than 14.6 kW / 50000 Btu. Ideal for energy compliant developments.
Depending on the needs, the user can choose different system layout:
  • systems for radiant floor
  • systems for radiators
  • mixed systems, radiators + radiant floor
  • systems to heat the water of a pool
  • cooling applications

Product Key Feature's

  • Environment friendly  R410A refrigerant
  • AquaFREE units have minimal dimensions and low noise level
  • Wireless thermostat
  • High efficiency
  • Reduced height slim construction
  • Fault diagnosis
  • Advanced technology control
  • High CoP, up to 4.0
  • Heats and cools
  • Easy installation
  • Cools to 18 degC
  • Can be used in mixed radiator, underfloor and pool applications

Technical data

Models (RAS)  -   RAS-4HVRNE      
Power Supply    –     240v  1 phase     
Colour (Munsell Code)  –   Natural Grey (1.0Y8.5/0.5)                
Sound Pressure Level  -   Night Mode  dB (A) -  47 / (43)          
Sound Pressure Level     -   dB (A)   66                           
Height         mm   -    1240          
Width         mm    -    950          
Depth         mm    -    315      
Net Weight   kg  -   95          
Refrigerant Type   –    R410a               
Flow Control         –  Micro Processor Controlled Expansion Valve        
Type Compressor         –  Hermetic (Rotary) inverter        
Power cable size mm  - 1.38          
Heat Exchanger   – Multi-Pass Cross-Finned Tube                 
Condenser Fan (Type)  – Propeller Fan (Quantity  – 2)
Air Flow Rate  (m3/min)  -  80          

Maximum Current  (A)  -      32          
Packaging Dimensions  m3 -   0.55 
Power  Watt -  80        

Water Piping Connection Size
Water inlet - 1 inch
Water Outlet - 1 Inch

Refrigeration Piping Connections Size          
Gas         mm (inches) -  9.53 / 
Liquid         mm (inches) -  15.88 / 5/8 
Refrigerant Charge kg   -  3.6         

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