Daikin Sky Air Advance RZA200D7Y1B Service Manual page 54

3 | Components
To remove the 4-way valve body
To install the 4-way valve body
Service manual
54
Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see
"4.2.2 Repair procedures" [
1 Remove the 4‑way valve coil from the 4‑way valve body, see
4
procedures" [ 53].
2 Cut the 4‑way valve pipes using a pipe cutter.
INFORMATION
The cutting locations of the 4‑way valve pipes can differ due to the pipe cutter
needing sufficient space to go around the pipes. It is up to the technician to define
the best cutting locations. If any refrigerant pipes are cut, these need to be replaced
during installation of the 4‑way valve body.
a 4‑way valve pipe
b 4‑way valve
3 Remove the 4‑way valve.
4 Keep the putty (if installed) and the insulation (if installed) for re-use.
5 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
6 Heat the ends of the 4‑way valve pipes using an oxygen acetylene torch and
remove the expansion valve pipe ends.
7 Stop the nitrogen supply when the piping has cooled down.
8 To install the 4‑way valve body, see
1 Install the 4‑way valve in the correct location.
INFORMATION
If any refrigerant pipes were cut during removal of the 4‑way valve body, ALWAYS
install new pipes.
2 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
4
142].
a b
a
"3.1.2 Repair
"3.1.2 Repair
4
procedures" [ 53].
RZA200+250D7Y1B
Sky Air Advance-series
ESIE19-13A – 2020.05