Viessmann: Energy optimisation via wired connection (SG Ready contacts)

What do you need?

Niko requirements

Your Niko Home Control installation meets the following requirements:

• It has a wireless smart hub or a connected controller II.

• It is configured with the most recent programming software.

Depending on the basic modules of your Niko Home Control installation, you need to install the following additional products:

Viessmann requirements

Your system meets the following requirements:

• It is a heat pump or heat pump boiler with Smart Grid Ready contacts.

• It is configured to allow correct Smart Grid Ready contact use.

Your system is one of the following Viessmann products*:

*Consult the website of the supplier for detailed specifications and the latest products.

Wiring diagrams

Connecting heat pumps

Via 230V contacts:

Switching module	Connected double switch

Smart Grid 1 and 2 (as indicated in the wiring diagrams) correspond to the the following Smart Grid Ready contacts on your heat pump:

Connecting heat pump boilers

Heat pump boilers usually have only one photovoltaic contact. You only have to connect the Smart Grid Ready 2.

Via potential-free contacts:

Switching module	Connected double switch
	*230V to potential-free contact module (e.g. Finder 22.32.0.230.1xx0)

Smart Grid 2 (as indicated in the wiring diagrams) corresponds to the the following Smart Grid Ready contact on your heat pump boiler:

Programming energy-saving routines for heat pumps

Configure the energy-saving routines for the heat pump via the Niko Home Control programming software. For more information, see https://guide.niko.eu/en/smnhc2/lv/solar-mode and https://guide.niko.eu/en/smnhc2/lv/peak-mode.

You can use the following programming example as inspiration or as a starting point: https://guide.niko.eu/en/penhc2/lv/making-a-bosch-heat-pump-respond-to-excess-electri

It is advised to configure the parameters as follows:

Solar mode

• Level of excess solar energy that activates the device (one of the following options):

  • 50 % of the power of the heat pump compressor

  • 25 % of the thermal capacity of the heat pump (often the name of the heat pump contains a reference to this thermal capacity)

• Minimum activation duration: 1 hour

Optionally: Define the latest start time and duration to ensure that the device is activated before the peak hours.

Peak mode

• Maximum power consumption (one of the following options):

  • 100 % of the heat pump compressor power

  • 50 % of the thermal capacity of the heat pump (often the name of the heat pump contains a reference to this thermal capacity)

• Peak target value: the maximum power level that should trigger the devices to turn off

• Peak mode type:

  • Predictive (capacity tariff in Flanders)

  • Direct

To view detailed information about Viessmann SG Ready and its configuration, please see https://viessmann.showpad.com/share/8DWPGjjIb48WJpuFq2Sf2