Siemens DE1821515: Installation instructions Installation
Installation instructions Installation: Siemens DE1821515
Table of contents
- Installation instructions Installation
- Technical data
- Special accessories Operating instructions Operating the continuous-flow heater Safety information Your new appliance
- Start-up after power failure Cleaning Customer Service Using the appliance after switching off the water supply
- A fault, what to do? Fault Cause Solution Who
- Fault Cause Solution Who

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Installation instructions
Installation
Install the continuous-flow heater as described in the
I.
Unpacking/Removing the cover
illustrated section. Observe the instructions in the text.
Unpack the appliance and check for transport-related ■
The illustrations can be found in the centre of the instruction
damage.
manual.
■
Please dispose of the packaging, and if applicable, the old
appliance in an environmentally-friendly manner.
Safety information
II.
Preparations for installation
Risk of electric shock!
Switch off the mains voltage supply immediately if
Important: Only use the supplied installation set.
a fault occurs.
The supplied water connection nozzles must be installed!
We do not accept liability for damage resulting from ■
■
Shut off water supply. The electrical connection (connec-
failure to heed these instructions.
tion cable) must be disconnected from the power supply.
Unscrew the fuse or switch off the circuit breaker.
The continuous-flow heater may only be connected ■
and put into operation by a qualified professional.
III.
Wall mounting
Never open the appliance without disconnecting the ■
The continuous-flow heater must be mounted on the ■
power supply beforehand.
wall. Attach it if necessary on the lower adjustable screws.
The statutory regulations of the respective country, as ■
■
The distance to the wall is variable. You can compensate
well as those of the local electricity and water suppliers,
for any unevenness of the wall's surface.
must be adhered to.
■
The grommet must tightly surround the connection cable.
■ I appliance and
The continuous-flow heater is a Class
If it is damaged during mounting, the openings must be
must be connected to the protective earth.
provided with watertight sealing.
■
The appliance must be permanently connected to installed
IV.
pipes. The conductor cross-section must comply with
Water connection
the installed appliance power.
The continuous-flow heater must be vented. The ■
■ : Earthed water pipes may give the appearance of
Caution
warm water tap must be opened and the appliance
a connected protective earth.
must be flushed out thoroughly for 1 minute with
at least 6 litres of water.
■
To guarantee compliance to relevant safety regulations,
an all-pole separator must be fitted during installation.
V.
The contact opening must be at least 3 mm.
Electrical connection/Mounting
The continuous-flow heater is only suitable for closed ■
The electrical supply terminal can be fitted at the top or ■
(pressurized) operation.
bottom. The sheath of the connection cable must extend
for at least 40 mm into the appliance.
The tap and outlet fittings must be approved for operation ■
with closed (pressurized) continuous-flow heater systems.
Set the power using the power selector switch before
connecting the wires to the mains connection terminal:
The continuous-flow heater can be operated with cold or ■
pre-warmed water (for example, from a solar energy unit
■
Set DE 1821515 and DE 5151821 to 18 kW (down) or
water supply). Observe the technical data and the special
21 kW (up).
accessories for this purpose.
■
Set DE 2427515 or DE 5152427 to 24 kW (down) or
■
The continuous-flow heater is only suitable for connection
27 kW (up).
to DVGW (German Technical and Scientific Association for
The set power must be marked on the ratings plate.
Gas and Water) approved plastic pipes.
■
Now screw the wires tightly into the mains connection
The continuous-flow heater may only be installed in a ■
terminal.
frost-free room.
Disconnect the electrical connection cable from the ■
supply and shut off the water supply before connect-
ing the appliance!
■
Connect the water supply and then connect the elec-
trical supply.
■
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
watertight sealing.
■
Do not touch electrically live parts after installation.

