Daikin Emura RXJ20A5V1B Service Manual page 59

To install the 4-way valve body
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08
A
A Class 42+50 unit
a 4‑way valve pipe
b 4‑way valve
c Putty
5 Stop the nitrogen supply when the piping has cooled down.
6 Remove the 4‑way valve.
INFORMATION
It is ALSO possible to cut the component pipe(s) using a pipe cutter. Make sure to
remove the remaining component pipe end(s) from the refrigerant pipes by heating
the brazing point(s) of the component pipe(s) using an oxygen acetylene torch.
7 Install plugs or caps on the open pipe ends of the refrigerant piping to avoid
dirt or impurities from entering the piping.
8 To install the 4‑way valve body, see
1 Remove the plugs or caps from the refrigerant piping and make sure they are
clean.
2 Remove the 4‑way valve coil from the spare part 4‑way valve body.
3 Install the 4‑way valve body in the correct location and correctly oriented.
Insert the pipe ends in the pipe expansions.
4 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
5 Wrap a wet rag around the 4‑way valve body and any other components near
the 4‑way valve and solder the 4‑way valve pipes to the refrigerant pipes.
c a b a
"4.1.2 Repair
4 Components
|
4
procedures" [ 57].
Service manual
59