Disposal; Overview: Disposal; To Pump Down; To Start And Stop Forced Cooling - Daikin Altherma EHVH04S18CB3V Installer's Reference Manual

13

Disposal

13.1

Overview: Disposal

Typical workflow
Disposing of the system typically consists of the following stages:
1 Pumping down the system.
2 Dismantling the system according to the applicable legislation.
3 Treating the refrigerant, oil and other parts according to the
applicable legislation.
INFORMATION
For more details, see the service manual.
13.2

To pump down

Example: To protect the environment, pump down when relocating
the unit or when disposing of the unit.
NOTICE
During pump down operation, stop the compressor before
removing the refrigerant piping. If the compressor is still
running and the stop valve is open during pump down, air
will be sucked into the system. Compressor breakage and
other injury will be the result due to abnormal pressure in
the refrigerant cycle.
Pump down operation will extract all refrigerant from the system into
the outdoor unit.
1 Remove the valve lid from liquid stop valve and gas stop valve.
2 Carry out the forced cooling operation.
3 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.
4 Check with the manifold if the vacuum is reached.
5 After 2-3 minutes, close the gas stop valve and stop forced
cooling operation.
b
c
a
d
e
d
a Gas stop valve
b Closing direction
c Hexagonal wrench
d Valve lid
e Liquid stop valve
13.3

To start and stop forced cooling

Confirm that DIP switch SW2 is in COOL mode.
1 Press the forced cooling operation switch SW1 to begin forced
cooling.
2 Press the forced cooling operation switch SW1 to stop forced
cooling.
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1A – 2016.02
H C
E O
SW1
A O
T L
SW2
NOTICE
Take care that while running forced cooling operation, the
water temperature remains
temperature read out of the indoor unit). You can achieve
this, for example, by activating all fans of the fan coil units.
13 Disposal
higher than 5°C (see
Installer reference guide
83