Wiring Diagram; Dhw Output; Application Areas / Conversion Table; Pressure Drop - STIEBEL ELTRON PEY 18 Operation And Installation

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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