Key Features

Indoor unit dimensions are 751 x 600 x 623 mm, with a net weight of 135 / 137 kg depending on phase.

Benefits

• Supports retrofit radiator systems requiring higher flow temperatures
• Can reach 80°C without an electric backup heater
• Useful in boiler replacement configurations
• Top-mounted connections may simplify routing and access during installation
• Operates with stated heating efficiency data for the 11 kW model

Technical Summary

Hitachi Yutaki S80 indoor air-to-water heat pump, model RWH-4(V)NFE, 11 kW heating output. Heating water outlet temperature range 20 to 80°C, with maximum 80°C in thermodynamic-only mode down to -20°C outside. COP 5 at 7°C outside / 35°C water. SCOP average climate 4.75 at 35°C and 3.63 at 55°C. Seasonal heating energy efficiency ?s 187 / 183% at 35°C and 142 / 140% at 55°C. Energy rating A+++ / A++. Indoor unit dimensions 751 x 600 x 623 mm; sound power 57 dB(A). Power supply 230V 1Ph 50Hz or 400V 3Ph 50Hz.

Installation Notes

Heating-only version; wired remote control PC-ARFH1E is not included. Water and refrigerant connections are located at the top of the indoor unit. Male/male valves are supplied for hydraulic heating connections. Minimum system water capacity is 40 L.

Efficiency

The 11 kW model is stated at COP 5 and energy rating A+++ / A++. Seasonal efficiency is listed as ?s 187 / 183% at 35°C and 142 / 140% at 55°C. The Smart Cascade cycle is described as minimising consumption.