Operating Instructions and Installation Instructions

ENGLISH
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INSTALLATION
Specication
Priority control with load shedding relay (LR 1-A)
See also chapter "Appliance description / Accessories".
85�02�02�0003�
2
1
1 Control cable to the contactor of the second appliance (e.g.
electric storage heater).
2 Control contact opens when switching the instantaneous
water heater on.
16.3 Mixed water volume/ outlet volume
The values are relative to a rated voltage of 400V. The mixed
water volume and outlet volume are subject to the available supply
pressure and the available mains voltage.
Available temperature approx. 38°C in the shower, for hand
washing, filling the bath etc.
6 10 14
3
2
1
6
7
8
9
10
11
12
13
14
15
84�02�02�0027�
Outlet temperature approx. 60°C for the kitchen sink and when
using thermostatic valves.
6 10 14
4
5
6
7
8
3
2
1
84�02�02�0028�
X Cold water inlet temperature in °C
Y Mixed water volume/ outlet volume in l/min
1 18kW
2 21kW
3 24 kW
16.4 Applications / Conversion table
Specific electrical resistance and specific electrical
conductivity, see “Data table”.
Standard specifica-
tion at 15 °C 20°C 25°C
Spec. Resi-
stance ρ ≥
Spec. Con-
ductivity σ ≤
Spec.
Resistance
ρ ≥
Spec. Con-
ductivity σ ≤
Spec.
Resistance
ρ ≥
Spec. Con-
ductivity σ ≤
Ωcm mS/m μS/cm Ωcm mS/m μS/cm Ωcm mS/m μS/cm
900 111 1111 800 125 1250 735 136 1361
1000 100 1000 890 112 1124 815 123 1227
1100 91 909 970 103 1031 895 112 1117
1200 83 833 1070 93 935 985 102 1015
1300 77 769 1175 85 851 1072 93 933
16.5 Pressure drop
Taps/valves
Pressure drop at taps at flow rate of 10 l/min
Mono-lever mixer tap, approx. MPa 0.04 - 0.08
Thermostatic valve, approx. MPa 0.03 - 0.05
Hand shower, approx. MPa 0.03 - 0.15
Sizing the pipework
When calculating the size of the pipework, a pressure drop for the
appliance of 0.1MPa is recommended.
16.6 Fault conditions
In case of faults, loads up to a maximum of 80°C at a pressure of
1.0MPa can occur temporarily in the installation.