To Drain The Domestic Hot Water Tank - Daikin Altherma 3 WS EWSAH06UD 9W Series Installer's Reference Manual

14.3 To drain the domestic hot water tank

EWSAH/X06UD
Daikin Altherma 3 WS
4P675765-1 – 2022.04
▪ Check if the water coming out of the relief valve is clean. If it contains debris or
dirt:
- Open the valve until the discharged water does not contain debris or dirt
anymore.
- Flush and clean the complete tank, including the piping between the relief
valve and cold water inlet.
To make sure this water originates from the tank, check after a tank heat up cycle.
INFORMATION
It is recommended to perform this maintenance more than once a year.
Switch box
Carry out a thorough visual inspection of the switch box and look for obvious
defects such as loose connections or defective wiring.
WARNING
If the internal wiring is damaged, it has to be replaced by the manufacturer, its
service agent or similarly qualified persons.
Water filter
Close the valve. Clean and rinse the water filter.
NOTICE
Handle the filter with care. To prevent damage to the mesh of the filter, do NOT use
excessive force when you reinsert it.
2
1 3
DANGER: RISK OF BURNING/SCALDING
The water in the tank can be very hot.
Prerequisite: Stop the unit operation 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.
Prerequisite: Remove the top panel. See
1 Remove the tube from the temperature and pressure relief valve that is
located on top of the tank.
2 Remove the temperature and pressure relief valve from the tank.
14 Maintenance and service
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"7.2.2 To open the indoor
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unit" [ 62].
Installer reference guide
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