Siemens DE2427415: Technical data

9

en

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

■

pressure.

Explain the operation of the continuous-flow heater to 

■

the user.

A

If the continuous-flow heater does not have sufficient 

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

mestic plumbing system, remove the flow-rate 

limiter.

B

Priority circuit for the combination with electrical 

 storage  heaters:

For operation with a priority circuit, a special load 

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

quired. Other existing load shedding relays, with the 

exception of electronic load shedding relays, may 

malfunction.

C

The control electronics must be coded when operated 

with a load shedding relay.

Technical data

DE 12415

DE 1821415

DE 4151821

DE 2427415

DE 4152427

Rated output

[kW]

13.2

18

21

24

27

Rated voltage

[V]

400

400

400

Fuse protection

[A]

20

32

40

Minimum conductor cross-section

[mm

2

]

4

4

6

Warm water flow at rated output

with temperature increase from

12 °C to 38 °C

[l/min]

7.3

9.9

11.6

13.2

13.9

12 °C to 60 °C

[l/min]

3.9

5.4

6.3

7.2

7.6

Start-up flow

[l/min]

2.6

2.6

2.6

Start-up flow pressure *

[MPa (bar)]

0.025 (0.25)

0.025 (0.25)

0.025 (0.25)

Application area in water 

specific electric resistance at 15 °C

[Ωcm]

≥ 1 300

≥ 1 300

≥ 1 300

Rated pressure

[MPa (bar)]

1.0 (10.0)

1.0 (10.0)

1.0 (10.0)

Maximum permissible supply temperature

[°C]

55

55

55

Maximum mains impedance at connection 

point

[Ω]

≤ 0.244

≤ 0.244

≤ 0.244

* The pressure loss on the mixer must also be added

D

Status display on the appliance

LED

Appliance status

Off

Off

Lights up

Ready

Slow flash (1/s)

Appliance is heating

Fast flash (4/s)

Desired water temperature 

is not reached (water flow 

too high for appliance 

rating).

E

The filter upstream from the check valve in the cold 

water supply inlet is clogged.

Remove the filter and either clean it or descale it. 

See Figure E 1–3.