11 Maintenance and service
Installer reference guide
82
ERGA04~08DAV3(A) + EHVH/X04+08S18+23DA
Daikin Altherma – Low temperature split
4P495248-1 – 2017.12
Chemical disinfection
If the applicable legislation requires a chemical disinfection in
specific situations, involving the domestic hot water tank, please be
aware that the domestic hot water tank is a stainless steel cylinder.
We recommend to use a non-chloride based disinfectant approved
for use with water intended for human consumption.
NOTICE
When using means for descaling or chemical disinfection,
it must be ensured that the water quality remains compliant
with EU directive 98/83 EC.
11.4.1
To drain the domestic hot water tank
DANGER: RISK OF BURNING
The water in the tank can be very hot.
Prerequisite:
Turn OFF the unit via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Close the cold water supply.
Prerequisite:
Open all the hot water tapping points to allow air to
enter the system.
1
Remove the top panel, the user interface panel and the front
panel.
2
Lower the switch box.
3
Remove the stop from the access point to the tank.
4
Use a drain hose and a pump to drain the tank via the access
point.
a
a
Access point to the tank
11.5
About cleaning the water filter in
case of trouble
INFORMATION
For yearly maintenance, you do not have to remove the
water filter from the unit to clean it. But in case of trouble
with the water filter, you might have to remove it so that
you can thoroughly clean it. Then you need to do as
follows:
▪
"11.5.1 To remove the water filter" on page 82
▪
"11.5.2 To clean the water filter in case of trouble" on
page 82
▪
"11.5.3 To install the water filter" on page 83
11.5.1
To remove the water filter
Prerequisite:
Turn OFF the unit via the user interface.
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 29
▪
"7.2.5 To lower the switch box on the indoor unit" on
page 30
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 water filter.
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
a
b
a
Clip
b
Water filter
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 water filter 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
"11.5.1 To remove
the water filter" on page 82
.
CAUTION
To protect the piping connected to the water filter from
damage it is recommended to perform this procedure with
the water filter removed from the unit.
2
Unscrew the bottom of the water filter housing. Use an
appropriate tool if needed.
CAUTION
Opening the water filter is ONLY required in case of severe
issues. Preferably this action is never to be done during
the complete lifetime of the water filter.
Final English - Tanslations in progress
