General Operation - Daikin R32 Sky-Air RZAG-M Service Manual

ESIE17-08 | Part 1. Introduction

1.3. General operation

• The Sky-Air is typically used for cooling or heating in commercial applications. Some units also have settings to perform
technical cooling. The medium which is used to transfer the heat from inside to outside or vice versa, is refrigerant. In case of
the RZAG-M, the refrigerant which is used, is R32.
• In case of heating, the compressor builds up pressure and hence the temperature of the refrigerant is increased. The hot
refrigerant is blown into the room by a fan which blows over a heat exchanger. Colder refrigerant flows back to the outdoor
unit, where temperature is further decreased by expansion through an expansion valve. After the expansion valve, the
refrigerant is capable of taking up heat again. This is enabled by a fan that sucks outdoor air over a heat exchanger. This
refrigerant is then transported to the compressor where temperature is further built up again and the cycle starts again. For
cooling, it's just the other way round.
1. Compressor
2. Indoor heat exchanger
3. Expansion valve
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R32 Sky-Air RZAG-M
4. Outdoor heat exchanger
5. 4-way valve
6. Stop valves
1.3. General operation
15/11/18 | Version 1.1