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Verfügbare Sprachen
Verfügbare Sprachen
46
1. SYSTEM OVERVIEW
Power unit
Hydraulics
Sensors
S1
Temperature heating
S2
Temperature store base
S3
Temperature store top
S4
Free / switching input
S5
Free / switching input
S6
Pressure
The control unit consists of the controller, the power unit and the sensor module.
The sensor module measures the current flow directly at the energy meter. If the power is high enough,
the PV current can be used for electrically heating the water in the store. By means of the power unit the
controller controls the 3 power stages in the electrothermal station for store heating.
In order to compensate for thermal losses, an internally calculated switch-on power has to be excee-
ded. An additional supply reserve will prevent using power from the mains because of system-depen-
dent tolerances (see Status / Controller on page 65).
The pump speed is adapted so that the target temperature at S1 is reached for store loading in
layers. If the maximum store temperature (S2) is reached, loading stops.
Optionally, different optional functions can be activated, see page 54.
Common operation with a battery is possible, but correct functioning cannot be guaranteed in all
cases. PV current is used with the following priorities:
1. Direct consumption
2. Battery loading
3. Loading of a hot water store
4. Current feed-in
For this purpose, the sensor modules and the battery have to be arranged as shown in the illus-
tration. The current sensor
Ⓐ
controller and the loads controlled by the controller.
The SR off function allows remote access to the controller, e.g in order to switch it off when the
battery is in use.
Controller
VBus
VBus
®
®
Hot water store
PV generator
1 / GND
R1
Loading pump
2 / GND
R2
External backup heating
external load 2 (optional)
3 / GND
4 / GND
R3
External load (optional)
5 / GND
R4
Power limitation Inverter
S6
of the battery must not measure the current consumption of the
Energy meter
Sensor module
Loads
Inverter
Relay
R1 / N / PE
R2 / N / PE
R3 / N / PE
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