General Operation - Daikin RXTA30B2V1B Service Manual

2 General operation

RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
The Split is typically used for cooling or heating in residential applications.
The medium which is used to transfer the heat from inside to outside or vice versa,
is refrigerant R32.
d
e
a
a Compressor
b Indoor heat exchanger
c Expansion valve
d Outdoor heat exchanger
e 4‑way valve
f Stop valves
In case of cooling, the compressor builds up pressure and hence the temperature
of the refrigerant is increased. The hot refrigerant is carried to the outdoor heat
exchanger which will cool down the hot refrigerant by the fan.
The temperature of the refrigerant is further decreased by expansion through the
expansion valve. The cold refrigerant flows into the indoor unit and is capable of
taking up heat again. This is enabled by a fan that sucks indoor air over the heat
exchanger.
This refrigerant is then transported to the compressor where temperature is built
up again and the cycle restarts.
For heating, it's just the other way round.
The expansion valve is to control the amount of refrigerant flowing into the heat
exchanger. This is defined by its own parameters (setpoint, air temperature, ...).
c
f
f
2 General operation
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b
Service manual
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