iNSTallaTiON
Maintenance
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Carefully remove the cover.
A cable connects the operating controls to the appliance PCB.
If necessary, disconnect the plug at the back of the program-
ming/control cover to fully remove it.
Undo the plug-in connection in the cable that runs to the
battery pack at the back of the cover.
Carefully lift away the appliance cover and release the earth
cable that runs from the appliance control panel to the cover.
Note
Refit the appliance cover after completing your work. See
chapter "Maintenance and cleaning/ Fitting the appliance
cover").
15.2 Removing the casing ring
Note
If you require more space to work inside the appliance,
you can remove the casing ring on the upper section of
the appliance.
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1 Fixing screws on casing ring
The casing ring is fastened with screws.
Undo the fixing screws on the casing ring.
Remove the condensate drain bend and pipe collar of the
drain. Turn anti-clockwise to release.
!
Material losses
Inside the appliance, an earth cable is connected to the
casing ring. Release the earth cable in order to be able
to remove the casing ring.
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The casing ring overlaps along the joint. A tab on one end clips
into the recess at the other end of the casing ring.
Ease the casing ring apart, until it can be removed or slid
downwards.
Note
Refit the casing ring after completing the work. See chap-
ter "Maintenance and cleaning/ Fitting the casing ring").
15.3 Cleaning the evaporator
!
WARNING Injury
The evaporator consists of numerous sharp-edged fins.
Be careful when cleaning the evaporator and wear
protective clothing, especially safety gloves.
To keep the appliance performance levels as high as possible,
check and clean the appliance evaporator as often as necessary.
Undo the screw that fastens the appliance cover to the top of
the programming/control cover.
Remove the programming/control cover and the appliance
cover.
Carefully clean the evaporator fins. Only use water and a soft
brush for this. Never use acidic or alkaline cleaning agents.
15.4 Draining the cylinder
WARNING Burns
Hot water may escape when draining the DHW cylinder.
To drain the DHW cylinder, e.g. when shutting the appliance down,
proceed as follows.
Isolate the appliance from the power supply.
Close the shut-off valve in the cold water supply line.
The DHW cylinder is drained via the cold water supply line.
Open the drain valve installed in the cold water supply line
(see chapter "Water connection"). If no drain valve has been
installed, undo the cold water supply line at the "Cold water
inlet" connection.
To vent the system, undo the DHW line connected to the
"DHW outlet" connection.
Some residual water will remain in the bottom of the DHW cyl-
inder.
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