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iNSTallaTiON
Specification
15.2 Wiring diagram
3/PE ~ 380-415 V
1 Heating
2 High limit safety cut-out
3 Safety pressure limiter
Priority control with LR 1-A
2
1
1 Control cable to the contactor of the 2nd appliance (e.g. elec-
tric storage heater).
2 Control contact drops out when switching the instantaneous
water heater on.
15.3 DHW output
The DHW output is subject to the mains voltage, the appliance's
connected load and the cold water inlet temperature. The rated
voltage and rated output can be found on the type plate (see
chapter "Troubleshooting").
Connected load in kW
38 °C DHW output in l/min.
Rated voltage
Cold water inlet temperature
380 V
400 V
415 V
16.2
19
21.7
18
21
24
19.4
22.6
25.8
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5 °C
10 °C
15 °C
20 °C
7.0
8.3
10.1
12.9
8.2
9.7
11.8
15.1
9.4
11.1
13.5
17.2
7.8
9.2
11.2
14.3
9.1
10.7
13.0
16.7
10.4
12.2
14.9
19.0
8.4
9.9
12.0
15.4
9.8
11.5
14.0
17.9
11.2
13.2
16.0
20.5
Connected load in kW
50 °C DHW output in l/min.
Rated voltage
Cold water inlet temperature
380 V
400 V
415 V
16.2
19
21.7
18
21
24
19.4
22.6
25.8
15.4 Application areas / Conversion table
Specific electrical resistivity and specific electrical conductivity
(see chapter "Data table").
Standard specifica-
tion at 15 °C
20 °C
Conductivity σ ≤ Resis-
Resis-
tivity
tivity
ρ ≥
ρ ≥
Ωcm
mS/m μS/cm
Ωcm
900
111
1111
800
1000
100
1000
890
1200
83
833
1070
1300
77
769
1175
15.5 Pressure drop
Taps
Tap pressure drop at a flow rate of 10 l/min
Mono lever mixer tap, approx.
Thermostatic valve, approx.
Hand shower, approx.
Sizing the pipework
When calculating the size of the pipework, an appliance pressure
drop of 0.1 MPa is recommended.
15.6 Fault conditions
In the event of a fault, loads up to a maximum of 95 °C at a pres-
sure of 1.2 MPa can occur temporarily in the installation.
15.7 Test symbols
See type plate on the appliance.
5 °C
10 °C
15 °C
5.1
5.8
6.6
6.0
6.8
7.8
6.9
7.8
8.9
5.7
6.4
7.3
6.7
7.5
8.6
7.6
8.6
9.8
6.2
6.9
7.9
7.2
8.1
9.2
8.2
9.2
10.5
25 °C
Conductivity σ ≤ Resis-
Conductivity σ ≤
tivity
ρ ≥
mS/m μS/cm
Ωcm
mS/m
125
1250
735
136
112
1124
815
123
93
935
985
102
85
851
1072
93
MPa
0.04 - 0.08
MPa
0.03 - 0.05
MPa
0.03 - 0.15
PEY |
20 °C
7.7
9.0
10.3
8.6
10.0
11.4
9.2
10.8
12.3
μS/cm
1361
1227
1015
933
15
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