Technical Data; Special Accessories - Siemens DE18401 Installation And Operating Instructions Manual

Priority circuit for the combination with electrical
B
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.
The control electronics must be coded when operated
C
with a load shedding relay.

Technical data

Rated output
Rated voltage
Fuse protection
Minimum conductor cross-section
Warm water flow at rated output
with temperature increase from
12 °C to 38 °C
12 °C to 60 °C
Start-up flow
Start-up flow pressure *
Application area in water
specific electric resistance at 15 °C
Rated pressure
Maximum permissible supply temperature
Maximum mains impedance at connection
point
* The pressure loss on the mixer must also be added.
236
20
100
en
DE 18401
[kW] 18
[V] 400
[A] 32
[mm 2 ] 4
[l/min] 9.9
[l/min] 5.4
[l/min] 2.6
[MPa (bar)] 0.025 (0.25)
[Ωcm] ≥ 1 300
[MPa (bar)] 1.0 (10.0)
[°C] 20
[Ω] ≤ 0.400
124
1 2
G A
137
Status display on the appliance
D
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).
The filter upstream from the check valve in the cold
E
water supply inlet is clogged.
Remove the filter and either clean it or descale it.
See Figure E 1–3.
DE 21401
21
400
32
4
11.6
6.3
2.6
0.025 (0.25)
≥ 1 300
1.0 (10.0)
20
≤ 0.400

Special accessories

■
Pipe kit BZ 45U20: for use of the continuous-flow heater
as an under sink appliance
■
Priority switch (load shedding relay)
for operation with a priority circuit
■
Mounting kit BZ 45K23: for surface mount installation
DE 24401 DE 27401
24 27
400 400
40 40
6 6
13.6 13.9
7.2 7.6
2.6 2.6
0.025 (0.25) 0.025 (0.25)
≥ 1 300 ≥ 1 300
1.0 (10.0) 1.0 (10.0)
20 20
≤ 0.400 ≤ 0.400
BZ 45L20:
9