To Inspect The Inside Of The Domestic Hot Water Tank; About Cleaning The Water Filter In Case Of Trouble; To Remove The Water Filter - Daikin Altherma 3 H HT F Installation Manual

3 Lower the switchbox. See "4.2.2 To lower the switch box on the
unit" [ 4 8].
indoor
4 Remove the tube from the temperature and pressure relief
valve that is located on top of the tank.
5 Remove the temperature and pressure relief valve from the
tank.
6 Use a drain hose and a pump to drain the tank via the access
point.
1
7 Tightening torques for installation:
Item
Tube connection
Temperature and pressure relief valve
10.5 To inspect the inside of the
domestic hot water tank
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
unit" [ 4 7].
1 Remove the clip that fixes the domestic hot water OUT pipe.
2 Disconnect the pipe such that the tank is accessible for visual
inspection (e.g. with an endoscope).
ETVH16SU18+23EA6V
Daikin Altherma 3 H HT F
4P644729-1 – 2021.02
2
Tightening torque
30 N•m
40 N•m
"4.2.1 To open the indoor
10 Maintenance and service
1
3 Reconnect the pipe to the tank.
4 Reinstall the clip to fix the domestic hot water OUT pipe.
10.6 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:
▪ "10.6.1 To remove the water
▪ "10.6.2 To clean
trouble" [ 4 38]
▪ "10.6.3 To install the water
10.6.1

To remove the water filter

Prerequisite: Stop the unit operation 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:
▪ "4.2.1 To open the indoor
▪ "4.2.2 To lower the switch box on the indoor
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.
2
3
filter" [ 4 37]
the water filter in case
filter" [ 4 38]
unit" [ 4 7]
unit" [ 4 8]
Installation manual
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of