Principle Of Operation; Instalation - Fujitsu NEORE B User Manual Installation Instruction

6. PRINCIPLE OF OPERATION

A heat pump is a device gaining low-temperature energy from a selected source and transforming it to a higher
temperature level. A heat pump air-water system utilizes heat of surrounding air. Its core is a high-performance
compressor which presses down the refrigerant in a hermetic circuit and expands it while using convenient
features of the cooling medium. We use ecological refrigerant R410. On the input side (outdoor unit and the
exchanger) outdoor air is pushed through heat transfer surface of exchanger by a fan. Inside of this exchanger
criculates refrigerant, which passes through expansion valve, and rapidly cooled to a temperature lower than the
ambient air. Refrigerant in exchanger heats up (e.g. from minute 17 to minute 10) and heat recovered is stored in
refrigerant. Then is "compressed" by a compressor and distributed to the condenser (indoor unit). Inside of plate
condenser of indoor unit refrigerant condenses and it transfers the heat into heating medium (heating water).
Thereafter condensed refrigerant goes into expansion valve and the cycle repeats itself.

7. INSTALATION

The device has to be mounted by an authorized company otherwise the device can be damaged or an injury can
be caused.The indoor unit shall be fixed on the wall. Free access to the controlling and protection elements has to
be provided (see the picture below). The outdoor unit shall be fixed by screws to the steel base supplied by the
producer. The steel base is required for a proper defrost of the exchanger. The base shall be fixed to ideally to a
concrete ground whose dimensions avoid falling the unit over during a gale.
Free circulation of air and maintenance access shall be provided (see the picture below). Be aware that outdoor
unit noise might disturb in the surrounding area and avoid it following proper standards.
50 cm
65 cm
65 cm
min 30 cm
6