Daikin EWYA004D2V3P Installer's Reference Manual page 210

16 | Disposal
Installer reference guide
210
NOTICE
Before pump down. Before using the unit's automatic pump down function, do the
following settings:
▪
Set [7-02]=1 (or [4.4]: Space heating/cooling > Number of zones = Dual
zone)
▪
Set [C-07]=0 (or [2.9]: Main zone > Control = Leaving water)
▪
Set [E-08]=0 (or [9.F]: Installer settings > Power saving function =
No)
Pump down operation will extract all refrigerant from the system into the outdoor
unit.
1 Remove the valve lid from the liquid stop valve and the gas stop valve.
2 Install a manifold on the gas stop valve.
3 Start the pump down operation via the user interface integrated in the indoor
unit:
1 Set the user permission level to Installer. See
the user permission
2 Go to [A.5]: Commissioning > Pump down .
3 Select Pump down.
4 Select OK to confirm.
Result: The pump down operation starts. It stops automatically
when done.
To stop the pump down operation manually:
1 In the menu, go to Stop pump down.
2 Select OK to confirm.
4 After 5 to 10 minutes (after only 1 or 2 minutes in case of very low ambient
temperatures (<−10°C)), close the liquid stop valve with a hexagonal wrench.
5 Check on the manifold if the vacuum is reached.
6 After 2-3 minutes, close the gas stop valve and stop the pump down
operation.
b
a
e
a Liquid stop valve
b Closing direction
c Hexagonal wrench
d Valve lid
e Gas stop valve
4
level" [ 104].
c
d
d
"To change —
—
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09