To Drain The Domestic Hot Water Tank; About Cleaning The Water Filter In Case Of Trouble - Daikin ETVZ16E6V7 Installer's Reference Manual

13 | Maintenance and service

13.3 To drain the domestic hot water tank

13.4 About cleaning the water filter in case of trouble

Installer reference guide
232
WARNING
If the internal wiring is damaged, it has to be replaced by the manufacturer, its
service agent or similarly qualified persons.
Descaling
Depending on water quality and set temperature, scale can deposit on the heat
exchanger inside the domestic hot water tank and can restrict heat transfer. For
this reason, descaling of the heat exchanger may be required at certain intervals.
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, make sure water quality
still complies with EU directive 2020/2184.
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.
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.
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:
▪
"13.4.1 To remove the water
▪
"13.4.2 To clean the water filter in case of
▪
"13.4.3 To install the water
4
filter" [ 233]
4
trouble" [ 233]
filter" [ 4 234]
EPRA14~18D + ETVZ16S18+23E
Daikin Altherma 3 H HT F
4P644739-1A – 2022.03