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Maintenance and service
Installer reference guide
222
EPRA08~W1 + ET9W
Daikin Altherma 3 H MT F
4P634887-1 – 2021.03
NOTICE
▪
When checking the magnetic filter/dirt separator for tightness, hold it firmly, so
as NOT to apply stress to the water piping.
▪
Do NOT isolate the magnetic filter/dirt separator by closing the shut‑off valves. To
properly empty the dirt separator, sufficient pressure is required.
▪
To prevent dirt from remaining in the dirt separator, ALWAYS take off the
magnetic sleeve.
▪
ALWAYS first unscrew the drain cap, and connect a drain hose to the bottom of
the water filter, then open the drain valve.
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:
▪
"13.5.1 To remove the water filter"
▪
"13.5.2 To clean the water filter in case of trouble"
▪
"13.5.3 To install the water filter"
Water pressure relief valve
Open the valve and check if it operates correctly.
The water may be very hot!
Checkpoints are:
▪
The water flow coming from the relief valve is high enough, no blockage of the
valve or in between piping is suspected.
▪
Dirty water coming out of the relief valve:
-
open the valve until the discharged water does NOT contain dirt anymore
-
flush the system
It is recommended to do this maintenance more frequently.
Pressure relief valve hose
Check whether the pressure relief valve hose is positioned appropriately to drain
the water. See
"7.4.4 To connect the drain hose to the drain"
66].
Pressure relief valve of the domestic hot water tank (field supply)
Open the valve.
CAUTION
Water coming out of the valve may be very hot.
▪
Check if nothing blocks the water in the valve or in between piping. The water
flow coming from the relief valve must be high enough.
▪
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.
Summary of Contents for Altherma 3 H MT F
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