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iNSTALLATiON
Specification
17.2 Wiring diagram
3/PE ~ 380-415 V
2
1
1 Power PCB with integral safety switch
2 Bare wire heating system
3 High limit safety cut-out
4 Mains terminal
17.3 DHW output
The DHW output is subject to the connected power supply, the
appliance's connected load and the cold water inlet temperature.
The rated voltage and rated output can be found on the type plate.
Connected load in kW
38 °C DHW output in l/min.
rated voltage
Cold water inlet temperature
380 V
400 V
415 V
DEL 13 Plus AU
12.2
13.5
14.5
DEL 18 Plus AU
16.2
18
19.4
DEL 27 Plus AU
23.5
26
28
Connected load in kW
50 °C DHW output in l/min.
rated voltage
Cold water inlet temperature
380 V
400 V
415 V
DEL 13 Plus AU
12.2
13.5
14.5
DEL 18 Plus AU
16.2
18
19.4
DEL 27 Plus AU
23.5
26
28
18
| DEL Plus AU
3
4
5 °C
10 °C
15 °C
20 °C
5.2
6.1
7.5
5.8
6.9
8.4
10.7
6.3
7.4
9.0
11.5
7.0
8.3
10.1
12.9
7.8
9.2
11.2
14.3
8.4
9.9
12.0
15.4
10.2
12.0
14.6
18.7
11.3
13.3
16.1
20.6
12.1
14.3
17.4
22.2
5 °C
10 °C
15 °C
20 °C
3.8
4.3
4.9
4.3
4.8
5.5
4.6
5.2
5.9
5.1
5.8
6.6
5.7
6.4
7.3
6.2
6.9
7.9
7.5
8.4
9.6
11.2
8.3
9.3
10.6
12.4
8.9
10.0
11.4
13.3
17.4 Application areas / Conversion table
Specific electrical resistance and specific electrical conductivity
Standard specifica-
tion at 15 °C
Conductivity σ ≤ Resis-
Resis-
tivity
ρ ≥
Ω cm
mS/m μS/cm
900
111
1111
17.5 Pressure drop
Taps/valves
Tap pressure drop at a flow rate of 10 l/min
Mono lever mixer tap, approx.
Thermostatic valve, approx.
Shower head, approx.
Sizing the pipework
When calculating the size of the pipework, an appliance pressure
drop of 0.1 MPa is recommended.
17.6 Fault conditions
In the event of a fault, loads up to 80 °C at a pressure of 1.0 MPa
can occur very briefly in the installation.
9.5
5.7
6.4
6.9
7.7
8.6
9.2
20 °C
25 °C
Conductivity σ ≤ Resis-
tivity
tivity
ρ ≥
ρ ≥
Ω cm
mS/m μS/cm
Ω cm
800
125
1250
735
MPa
MPa
MPa
www.stiebel-eltron.com
Conductivity σ ≤
mS/m
μS/cm
136
1361
0.04 - 0.08
0.03 - 0.05
0.03 - 0.15
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Troubleshooting
