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INSTALLATIoN
Maintenance
14. Maintenance
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
WARNING Electrocution
Before any work on the appliance, disconnect all poles
of the appliance from the power supply.
Draining the buffer cylinder
f Drain the buffer cylinder via the drain valve.
f
Draining the DHW cylinder
CAUTION Burns
Hot water may escape during draining.
f Close the shut-off valve in the cold water inlet line.
f
f Open the hot water taps on all draw-off points.
f
f Empty the DHW cylinder via the "cold water inlet" connection.
f
Cleaning and descaling the DHW cylinder
Material losses
!
Never use descaling pumps or descaling agents to clean
the cylinder..
f Clean the appliance through the inspection port.
f
For the torque of the flange screws, see chapter "Specification /
Dimensions and connections".
Replacing the signal anode
f Replace the signal anode if it becomes depleted.
f
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