System Overview - Tuxhorn tubra-eTherm S Manuel D'installation

2

System overview

Controller with power unit
Bus
Hot water store
PV generator
6
Energy meter
Sensor module
Battery
S1
Load
Inverter
Sensors
S1 Temperature store 1 / GND
S2 optional 2 / GND
S3 optional 3 / GND
DIn1 Smart Remote 9 / 10
DIn2 Smart Remote 11 / 12
The control unit consists of the controller with power unit and the sensor module.
The sensor module measures the current flow directly at the energy meter. If the
power generated is high enough, the excess current can be used for electrically
heating the water in the store. If the store maximum temperature is reached (S1),
loading will stop. Alternatively, power control can take place via an external 0-10
V signal.
Using a battery is possible in this system, but correct functioning cannot be guaran-
teed in all cases. The PV current is used with the following priorities:
1. Direct consumption
2. Charging the battery
3. Loading a hot water store
4. Grid feed-in
For this purpose, the sensor modules and the battery have to be arranged as shown
in the illustration. The current sensor  of the battery must not detect the current
consumption of the controller and the loads controlled by the controller.
The SR off function (see page 21) allows remote access to the controller, e.g. in
order to switch it off when the battery is in use. If the switching input is closed, the
controller and all loads switch off regardless of the excess measured.
Different optional functions can be activated, see page 23.
• Internal backup heating
• Inverter
Output
Out1 Electric Out 1 / N / ⏚
immersion
heater
DO1 Inverter 21 / 22
(optional)