Hitachi TAW 270NH2, RAW 25NH2 sanitary hot water heat pump Installation Manual

Below you will find brief information for sanitary hot water heat pump TAW-270NH2, sanitary hot water heat pump RAW-25NH2. The Hitachi sanitary hot water heat pumps are designed to provide hot water for domestic use, utilizing a heat pump to transfer heat from the air to the water. They are energy-efficient and environmentally friendly, reducing your carbon footprint and saving you money on your energy bills.

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Hitachi TAW-270NH2, RAW-25NH2 Installation Manual | Manualzz

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Key features

  • Energy-efficient operation
  • Environmentally friendly
  • Hot water for domestic use
  • Heat pump technology

Frequently asked questions

The installation process is described in detail in the instruction manual. It is recommended to have a qualified technician install the unit.

Use water that conforms to the drinking water regulation in each country. Do not use water that is contains impurities such as salinity, lime, etc., like well-water. Install a water softener device when the hardness of water is high.

Yes, a pressure relief valve is essential. It prevents excess water pressure which can cause volumetric expansion of heated water. The pressure relief valve discharges up to 3% of the capacity of the equipment in the process of boiling the water.

The outdoor unit must be mounted at a location with good ventilation and at least 300mm away from any obstructions. The clearances of the unit from top, left, right and front are specified in the figure below.

Use a vacuum pump to remove air from the piping system. The procedure for using a vacuum pump is detailed in the installation manual.
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