Yutaki-S80 Indoor Unit (RWH Series)

  • System Type: Split Air to Water Very High Temperature Heat Pump (Indoor Unit)
  • Refrigerant Cycle: R410A + R134A Dual Cascade
  • Nominal Heating Capacity: 11 kW / 14 kW / 16 kW
  • Power Supply: 230V 1Ph 50Hz or 400V 3Ph 50Hz
  • Water Outlet Temp (Max): Up to 80°C in thermodynamic mode
  • Min Operating Temp: Down to -25°C outdoor temperature
  • Control: Wired and wireless remote control options (not included as standard)

Product Details

The Yutaki-S80 Indoor Unit (RWH Series) is engineered for applications requiring very high water temperatures, making it an ideal solution for retrofits or replacement of oil/gas boilers. With an innovative dual cascade refrigerant system (R410A and R134A), it achieves up to 80°C outlet temperature without electric backup, ensuring energy efficiency and year-round comfort even in extreme cold conditions. Compact, easy to install, and compatible with various heating emitters, it’s the perfect fit for high-demand domestic or light commercial applications.

  • Provides hot water up to 80°C with no electric heater required
  • Operates efficiently down to -25°C outdoor temperature
  • Smart Cascade control system optimizes energy usage
  • Compact dimensions with easy top-side piping access
  • Quiet indoor operation with sound power levels as low as 57 dB(A)
  • High-efficiency SCROLL compressor
  • Compatible with large DHW tanks (up to 3000L)
Model Reference Nominal Output Power Supply Max Water Temp (°C) SCOP (35°C / 55°C) COP (7°C/35°C) Sound Power (dB(A)) Dimensions (HxLxD mm) Net Weight (kg) Water Flow (m3/h) Min / Rated / Max Expansion Vessel (L) Min Water Volume (L) Remote Control
RWH-4.0VNFE 11 kW 230V / 1Ph / 50Hz 80°C 4.75 / 3.63 5.0 57 751 x 600 x 623 135 1 / 1.89 / 2.8 12 40 Not Included
RWH-5.0VNFE 14 kW 230V / 1Ph / 50Hz 80°C 4.43 / 3.35 4.71 57 751 x 600 x 623 139 1.1 / 2.41 / 3.2 12 50 Not Included
RWH-6.0VNFE 16 kW 230V / 1Ph / 50Hz 80°C 3.88 / 3.23 4.57 58 751 x 600 x 623 139 1.2 / 2.75 / 3.2 12 50 Not Included
RWH-4.0NFE 11 kW 400V / 3Ph / 50Hz 80°C 4.75 / 3.63 5.0 57 751 x 600 x 623 137 1 / 1.89 / 2.8 12 40 Not Included
RWH-5.0NFE 14 kW 400V / 3Ph / 50Hz 80°C 4.43 / 3.35 4.71 57 751 x 600 x 623 146 1.1 / 2.41 / 3.2 12 50 Not Included
RWH-6.0NFE 16 kW 400V / 3Ph / 50Hz 80°C 3.88 / 3.23 4.57 58 751 x 600 x 623 146 1.2 / 2.75 / 3.2 12 50 Not Included