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EN
The cold water connection of the instantaneous water heater is equipped with a strainer. Dirt
deposited in this strainer can reduce the hot water output. Clean or replace as follows.
1.
Switch off the power supply to the instantaneous water heater.
2. Close the shut-off valve in the inlet pipe or turn off the tap.
3. Undo the union nuts alternately. Use a spanner to hold the instantaneous water heater
water connections steady as you do so. Water may leak out.
4. Pull the instantaneous water heater up and remove it from the wall bracket.
5. Lever the strainer out of the connection piece of the instantaneous water heater and clean
or replace it.
6. Insert the clean strainer into the connection piece and connect the water pipe to the water
inlet of the instantaneous water heater.
7. Purge the instantaneous water heater as described in the chapter “Purging”.
8. Switch the power supply back on again.
Each time it is emptied (for example after work on the plumbing system or following repair
work on the appliance), the instantaneous water heater must be purged before it is used
again.
1. Switch off the power supply to the instantaneous water heater.
2. To purge the instantaneous water heater, open the hot water tap and wait until the water
emerges free of air bubbles.
3. Switch the power supply back on again.
• Plastic surfaces and fittings should only be wiped with a damp cloth. Do not use abrasive or
chlorine-based cleaning agents or solvents.
• For a good water supply, the outlet fittings (special tap aerators and shower heads) should
be unscrewed and cleaned at regular intervals. Every three years, the electrical and plumb-
ing components should be inspected by an authorised professional in order to ensure prop-
er functioning and operational safety at all times.
Use
4.3 Changing the strainer
4.4 Purging
4.5 Cleaning and maintenance
