Siemens DE1821515: en

en

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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.

en

VI.

A

If the continuous-flow heater does not have sufficient

Startup/additional information

water flow due to low water line pressure in your do-

The device is compliant to IEC 61000-3-12.

mestic plumbing system, remove the flow-rate

limiter.

First start-up

B

Priority circuit for the combination with electrical

■

Switch on the fuses.

storage heaters:

For operation with a priority circuit, a special load

Setting the temperature. ■

shedding relay BZ 45L20 (special accessory) is re-

Starts rinsing: Open the warm water tap and allow water ■

quired. Other existing load shedding relays, with the

to flow for at least 1 minute (flow-rate at least 6 litres per

exception of electronic load shedding relays, may

minute). Only then (for safety reasons) will the appliance

malfunction.

begin to heat.

Tip: Should the appliance not start because of a reduced

C

The control electronics must be coded when operated

with a load shedding relay.

flow-rate, remove the perlator, shower head or similar before

start and repeat the process.

■

Remove the flow-rate limiter (see Fig. A) with low water

pressure.

■

Explain the operation of the continuous-flow heater to

the user.

Technical data

DE 1821515

DE 2427515

DE 5151821

DE 5152427

18

24

Rated output

[kW]

21

27

Rated voltage

[V] 400 400

Fuse protection

[A] 32 40

2

Minimum conductor cross-section

[mm

]4 6

Warm water flow at rated output

with temperature increase from

9.9

13.2

12 °C to 38 °C [l/min]

11.6

13.9

5.4

7.2

12 °C to 60 °C [l/min]

6.3

7.6

Start-up flow

[l/min] 2.6 2.6

Start-up flow pressure *

[MPa (bar)] 0.025 (0.25) 0.025 (0.25)

Application area in water

specific electric resistance at 15 °C

[Ωcm] ≥ 1 300 ≥ 1 300

Rated pressure

[MPa (bar)] 1.0 (10.0) 1.0 (10.0)

Maximum permissible supply temperature

[°C] 55 55

Maximum mains impedance at connection point

[Ω] ≤ 0.44 ≤ 0.244

* The pressure loss on the mixer must also be added

Operation with prewarmed water (solar heated)

Important: The cold water supply temperature must not be

higher than 55 °!

The continuous-flow heater can only heat prewarmed water

to a max. of 60 °C. If the cold water supply exceeds a tem-

If the cold water supply exceeds a temperature of 60 °C, a

perature of 55 °C, the water will not be warmed any further.

circuit breaker will trigger and shut the appliance off. There-

fore, the residential plumbing must be equipped with a ther-

mostatic premixer (e. g. special accessory BZ 45T20) that will

limit the cold water supply temperature to a max. of 55 ° by

appropriately mixing in cold water.

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