Install the continuous-ﬂow heater as described in the
illustrated section. Observe the instructions in the text.
The illustrations can be found in the centre of the instruction
Risk of electric shock!
Switch off the mains voltage supply immediately if
a fault occurs.
We do not accept liability for damage resulting from
failure to heed these instructions.
The continuous-ﬂow heater may only be connected
and put into operation by a qualiﬁed professional.
Never open the appliance without disconnecting the
power supply beforehand.
The statutory regulations of the respective country, as
well as those of the local electricity and water suppliers,
must be adhered to.
The continuous-ﬂow heater is a Class
must be connected to the protective earth.
The appliance must be permanently connected to installed
pipes. The conductor cross-section must comply with
the installed appliance power.
: Earthed water pipes may give the appearance of
a connected protective earth.
To guarantee compliance to relevant safety regulations,
an all-pole separator must be ﬁtted during installation.
The contact opening must be at least 3 mm.
The continuous-ﬂow heater is only suitable for closed
The tap and outlet ﬁttings must be approved for operation
with closed (pressurized) continuous-ﬂow heater systems.
The continuous-ﬂow heater can be operated with cold or
pre-warmed water (for example, from a solar energy unit
water supply). Observe the technical data and the special
accessories for this purpose.
The continuous-ﬂow heater is only suitable for connection
to DVGW (German Technical and Scientiﬁc Association for
Gas and Water) approved plastic pipes.
The continuous-ﬂow heater may only be installed in a
Disconnect the electrical connection cable from the sup-
ply and shut off the water supply before connecting the
Connect the water supply and then connect the electrical
Only make the openings which are required for instal-
lation on the rear of the appliance. If the appliance is
reinstalled, the unused openings must be provided with
Do not touch electrically live parts after installation.
Important: Only use the supplied installation set.
The supplied water connection nozzles must be installed!
I appliance and
Set the power using the power selector switch before
connecting the wires to the mains connection terminal:
The set power must be marked on the ratings plate.
Unpacking/Removing the cover
Unpack the appliance and check for transport-related
Please dispose of the packaging, and if applicable, the old
appliance in an environmentally-friendly manner.
Preparations for installation
Shut off water supply. The electrical connection (connec-
tion cable) must be disconnected from the power supply.
Unscrew the fuse or switch off the circuit breaker.
The continuous-ﬂow heater must be mounted on the
wall. Attach it if necessary on the lower adjustable screws.
The distance to the wall is variable. You can compensate
for any unevenness of the wall's surface.
The grommet must tightly surround the connection cable.
If it is damaged during mounting, the openings must be
provided with watertight sealing.
The continuous-ﬂow heater must be vented. The
warm water tap must be opened and the appliance
must be ﬂushed out thoroughly for 1 minute with
at least 6 litres of water.
The electrical supply terminal can be ﬁtted at the top or
bottom. The sheath of the connection cable must extend
for at least 40 mm into the appliance.
Set DE 1113415 to 11 kW (down) or 13 kW (up).
Set DE 1821415 and DE 4151821 to 18 kW (down) or
21 kW (up).
Set DE 2427415 or DE 4152427 to 24 kW (down) or
27 kW (up).
Now screw the wires tightly into the mains connection