31
Spray water across the evaporator fins.
Remove the water from the appliance using a wet suction
device.
Remove contaminants and blockages.
Note
Check the condensate drain regularly, at least once a year.
9.4 Cleaning the condensate drain
Check the condensate drain regularly.
Remove the evaporator cover (see chapter „Cleaning the eva-
porator fins“).
Remove dirt and blockages immediately.
To test the drain, pour one litre of water, for example from
two half-litre bottles, into the condensate pan.
If the condensate pan does not overflow, the drainage facility is
adequate.
9.5 Cleaning the filter ball valve
26_04_01_0614_
Close the filter ball valve by turning it 90° clockwise.
Undo the cap.
If the filter element is contaminated, connect a short hose for
backwashing.
Place the free end of the hose in a bucket.
Turn the filter ball valve 15° clockwise.
Turn the filter ball valve 15° back again.
Check whether cleaning was successful. Repeat backwashing
if required.
Refit the cap.
Open the filter ball valve by turning it 90° anti-clockwise.
Check the system fill pressure and adjust if required.
9.6 Replacing the anode
Isolate the appliance from the power supply.
Close the shut-off valve in the cold water supply.
Remove the cover from the cylinder module.
Remove the l.h. front panel of the cylinder module.
Briefly open the lowest DHW draw-off point.
1
26_04_01_0570
1 Drain connection of the DHW cylinder
At the DHW cylinder drain valve, draw off approx. 20litres of
water.
1
2
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1 Anode connection at the cylinder
2 Anode
Pull the anode cable plug from the anode.
Remove the anode by turning it.
Insert a new anode. Alternatively, you can also use a seg-
mented anode.
Push the plug of the anode cable back onto the anode.
Open the shut-off valve in the cold water line.
Vent the DHW pipework at the respective DHW draw-off
points.
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