11 Maintenance and service
Installer reference guide
78
ERGA04~08DAV3(A) + 08S18+23DA +
08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06
11.5.1
To remove the water filter
Prerequisite:
Stop the unit operation (via the user interface, central
controller, operation switch, …).
Prerequisite:
Turn OFF the respective circuit breaker.
1
The water filter is located behind the switch box. To get access
to it, see:
▪
"7.2.3 To open the indoor unit" on page 25
▪
"7.2.5 To lower the switch box on the indoor unit" on
page 26
2
Close the stop valves of the water circuit.
3
Close the valve (if equipped) of the water circuit towards the
expansion vessel.
4
Remove the cap on the bottom of the magnetic filter/dirt
separator.
5
Connect a drain hose to the bottom of the water filter.
6
Open the valve on the bottom of the water filter to drain water
from the water circuit. Collect the drained water in a bottle, sink,
… using the installed drain hose.
7
Remove the 2 clips that fix the water filter.
a
b
a
a
Clip
b
Magnetic filter/dirt separator
8
Remove the water filter.
9
Remove the drain hose from the water filter.
CAUTION
Although the water circuit is drained, some water may be
spilled when removing the magnetic filter/dirt separator
from the filter housing. ALWAYS clean spilled water.
11.5.2
To clean the water filter in case of trouble
1
Remove the water filter from the unit. See
CAUTION
To protect the piping connected to the magnetic filter/dirt
separator from damage it is recommended to perform this
procedure with the magnetic filter/dirt separator removed
from the unit.
2
Unscrew the bottom of the water filter housing. Use an
appropriate tool if needed.
CAUTION
Opening the magnetic filter/dirt separator is ONLY required
in case of severe issues. Preferably this action is never to
be done during the complete lifetime of the magnetic filter/
dirt separator.
a
b
a
Bottom part to be unscrewed
b
Water filter housing
3
Remove the strainer and the rolled‑up filter from the water filter
housing and clean with water.
4
Install the cleaned rolled‑up filter and strainer in the water filter
housing.
INFORMATION
Correctly install the strainer in the magnetic filter/dirt
separator housing using the protrusions.
a
b
c
c
a
Rolled‑up filter
b
Strainer
c
Protrusion
5
Install and properly tighten the bottom of the water filter
housing.
11.5.3
To install the water filter
CAUTION
Check the condition of the O-rings and replace if needed.
Apply water to the O-rings before installation.
1
Install the water filter in the correct location.
a
c
b
a
a
Clip
b
Magnetic filter/dirt separator
c
Air purge valve
2
Install the 2 clips to fix the water filter to the water circuit pipes.
3
Make sure that the air purge valve of the water filter is in the
open position.
