P.14
P.15
4. Use
40
30
25
20
10
0
0.0
1.0
2.0
Hot water output [l/min]
Te
m
per
atu
re
incre
ase
[K]
3.0
4.0
5.0
2.9kW
4.2 Adjusting the water flow and temperature
May only be carried out by a specialist.
Remove the cover, undo the hood screw underneath and remove the hood.
The maximum temperature and flow depend on the conditions at the installation site.
In case of quite low or high cold water temperatures, you may reduce or increase the flow with the adjustment
screw to achieve a comfortable outlet temperature. See figure below for direction of rotation:
Decreasing the flow rate:
Turn the adjusting screw clockwise to decrease the flow rate, thus making a higher
outlet temperature possible.
Increasing the flow rate:
Turn the adjusting screw counter-clockwise to increase the flow rate, thus reducing
the possible outlet temperature.
Direction of rotation
Flow
Temperature
4.4 Purging
Each time it is emptied (for example after work on the plumbing system or following repair work on the
appliance), the instantaneous electric water heater must be purged before it is used again.
1. Switch off the power supply to the instantaneous electric water heater.
2. To purge the instantaneous electric 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.
4.5 Cleaning and maintenance
- 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 plumbing components should be
inspected by an authorised professional in order to ensure proper functioning and operational safety at
all times.
4.3 Changing the strainer
The cold water connection of the instantaneous electric water heater is equipped with a strainer. Dirt depos-
ited in this strainer can reduce the hot water output. Clean or replace as follows.
1. Switch off the power supply to the instantaneous electric water heater.
2. Close the shut-off valve in the inlet pipe.
3. Disconnect the water pipe from the water inlet. The water inlet is indicated in blue on the rating plate
(under the cover). This can cause water leakage.
4. Lever the strainer out of the connection piece of the
instantaneous electric water heater and clean or
replace it.
5. Insert the clean strainer into the connection piece
and connect the water pipe to the water inlet of the
instantaneous electric water heater.
6. Purge the instantaneous electric water heater as
described in the chapter “Purging”.
7. Switch the power supply back on again.
4. Use
