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

What do you need?

Niko requirements

Your Niko Home Control installation meets the following requirements:

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

Required additional products

Reference numbers

Connected controller

Switching module with two outputs

550-00103 or 550-00106

Connected controller with a wireless bridge

Connected double switch

The connected double switch can be placed on a DIN rail using a modular holder (e.g. Legrand 412950)

552-721X2

Wireless smart hub

Connected double switch

The connected double switch can be placed on a DIN rail using a modular holder (e.g. Legrand 412950)

552-721X2

CTC 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 contains one of the following CTC logic boards*:

    • EcoLogic M

    • EcoLogic L

    • EcoZenith i360

    • EcoZenith i555 Pro

Your system is one of the following CTC products*:

Potential-free contacts

230 V contacts

Heat pumps

  • EcoAir 700

  • EcoAir 600

  • EcoAir 400

  • EcoPart 600

  • EcoPart 400

  • Gsi 600 (combi)

-

Heat pump boilers

  • WaterHeater 101, only heat pump (395W)

  • WaterHeater 101, only resistor (2000W)

  • WaterHeater 101, heat pump and resistor (2395W)

  • WaterHeater 201-Inox, only heat pump (569W)

  • WaterHeater 201-inox, only resistor (2000W)

  • WaterHeater 201-Inox, heat pump and resistor (2569W)

-

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

Wiring diagrams

Connecting heat pumps

Via potential-free contacts:

Switching module

Connected double switch

Wiring diagram Bus Potential free
Wiring diagram Potential free

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

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

Smart Grid 1

Smart Grid 2

Option 1 for CTC heat pump

A14 and A25 (relay K22)

A24 and A25 (relay K23)

Option 2 for CTC heat pump

G33 and G34 (relay K24)

G73 and G74 (relay K25)

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

Wiring diagram Bus Potential free
Wiring diagram Potential free

*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:

Smart Grid 2

CTC heat pump boiler

CN6/5-6

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

Niko routine

Smart Grid Ready status

Smart Grid Ready output contact

Setting

Solar mode

Forced on

Smart Grid Ready 1

On (closed)

Smart Grid Ready 2

On (closed)

Enhanced comfort

Smart Grid Ready 1

Off (open)

Smart Grid Ready 2

On (closed)

Peak mode

Forced off

Smart Grid Ready 1

On (closed)

Smart Grid Ready 2

Off (open)

Normal mode

Normal operation

Smart Grid Ready 1

Off (open)

Smart Grid Ready 2

Off (open)


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