Wiring Diagram; Dhw Output; Pressure Drop - STIEBEL ELTRON DHF 13 C Operation And Installation Manual

INSTALLATION
Specification

15.2 Wiring diagram

3/PE ~ 400 V
T
2
Q
1
PE
1 Differential pressure switch (MRC control valve)
Stage I for low flow rate
Stage II for high flow rate
2 High limit safety cut-out
3 Tubular heater heating system
4 Mains terminal
Priority control with LR 1-A
2
1
1 Control cable to the contactor of the second appliance
(e.g. electric storage heaters).
2 Control contact drops out when switching the instantaneous
water heater on.
26 | DHF C
3
32 22 12
31 21 11
L L L
4
L L L

15.3 DHW output

The DHW output is subject to the mains power supply, the appli-
ance connected load and the cold water inlet temperature. The
rated voltage and rated output can be found on the type plate (see
chapter "Installation / Troubleshooting").
Connected load 38 °C DHW output in l/min.
in kW
Rated voltage Cold water inlet temperature
400 V 5 °C
DHF 13 C
6.6
13.2
DHF 15 C
7.5
15
DHF 18 C
9
18
DHF 21 C
10.3
20.5
Connected load 50 °C DHW output in l/min.
in kW
Rated voltage Cold water inlet temperature
400 V 5 °C
DHF 13 C
6.6
13.2
DHF 15 C
7.5
15
DHF 18 C
9
18
DHF 21 C
10.3
20.5

15.4 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.
10 °C 15 °C
2.9 3.4 4.1
5.7 6.7 8.2
3.2 3.8 4.7
6.5 7.7 9.3
3.9 4.6 5.6
7.8 9.2 11.2
4.5 5.3 6.4
8.9 10.5 12.7
10 °C 15 °C
2.1 2.4 2.7
4.2 4.7 5.4
2.4 2.7 3.1
4.8 5.4 6.1
2.9 3.2 3.7
5.7 6.4 7.3
3.3 3.7 4.2
6.5 7.3 8.4
MPa 0.04 - 0.08
MPa 0.03 - 0.05
MPa 0.03 - 0.15
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20 °C
5.2
10.5
6.0
11.9
7.1
14.3
8.2
16.3
20 °C
3.1
6.3
3.6
7.1
4.3
8.6
4.9
9.8