General solution: Energy optimisation using boiler resistor
What do you need?
Niko requirements
Your Niko Home Control installation meets the following requirements:
It has a connected controller II.
It is configured with the most recent programming software.
Additionally, you need to install the analogue control module 0–10 V (550-00240).
Third party requirements
Your system meets the following requirements:
Your water boiler immersion resistor needs to be inserted into the boiler unit to heat up the water.
It has an additional high power dimmer module (e.g. Carlo Gavazzi RGC1P23V12EA for 1-phase circuits) to control the power of the water boiler immersion resistor. Make sure that it is a phase-switching dimmer, not a Pulse Width Modulation (PWM) switching dimmer.
Wiring diagrams
Use the following contacts on the high power dimmer:
Carlo Gavazzi high power dimmer | |
|---|---|
230 V (L) | L1 |
Variable load | T2 |
Analogue out (on analogue control module) | A1 (0–10 V) |
Common (on analogue control module) | GND |
Use the following contacts on the water boiler immersion resistor:
Third-party system | |
|---|---|
Variable load | L1 |
230 V (N) | N |
Programming
Configure via the Niko Home Control programming software:
In the solar mode, define virtual devices that correspond to specific levels of available excess solar energy.
Then, create conditions to link the state of these virtual devices to output levels of the 0–10 V output.
Add the analogue control module and assign the 0–10 V output.
Take into account the minimum and maximum power of your water boiler immersion resistor.
The table below shows an example, where the resistor’s minimum power is 500 Watt and the maximum power is 2000 Watt:
Excessive power in solar mode | Virtual device | Output level of 0–10 V output |
|---|---|---|
500 Watt | 1 | 25 % |
500 Watt | 2 | 50 % |
500 Watt | 3 | 75 % |
500 Watt | 4 | 100 % |