Siemens DE18401: Technical data Special accessories
Technical data Special accessories: Siemens DE18401
Table of contents
9
en
Technical data
DE 18401
DE 21401
DE 24401
DE 27401
Rated output
[kW]
18
21
24
27
Rated voltage
[V]
400
400
400
400
Fuse protection
[A]
32
32
40
40
Minimum conductor cross-section
[mm
2
]
4
4
6
6
Warm water flow at rated output
with temperature increase from
12 °C to 38 °C
[l/min]
9.9
11.6
13.6
13.9
12 °C to 60 °C
[l/min]
5.4
6.3
7.2
7.6
Start-up flow
[l/min]
2.6
2.6
2.6
2.6
Start-up flow pressure *
[MPa (bar)] 0.025 (0.25)
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
≥ 1 300
Rated pressure
[MPa (bar)] 1.0 (10.0)
1.0 (10.0)
1.0 (10.0)
1.0 (10.0)
Maximum permissible supply temperature
[°C]
20
20
20
20
Maximum mains impedance at connection
point
[Ω]
≤ 0.400
≤ 0.400
≤ 0.400
≤ 0.400
* The pressure loss on the mixer must also be added.
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.
Special accessories
Pipe kit
■
BZ 45U20
: for use of the continuous-flow heater
as an under sink appliance
Priority switch (load shedding relay)
■
BZ 45L20
:
for operation with a priority circuit
Mounting kit
■
BZ 45K23
: for surface mount installation
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.
472
236
20
100
332
42
388
124
137
G
1 2
A
