General solution: Multi-zone heat pump control via wired connection
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.
You need to install the following additional products:
One heating or cooling module for Niko Home Control (550-00150) per four zones
A switching module for Niko Home Control (550-00103 or 550-00106) with at least one free output
A digital potential-free sensor module for Niko Home Control (550-00210) with at least one free input
If the output contact on your heat pump system is not potential-free, you need an additional potential-free contact module (e.g. Finder 22.32.0.230.1xx0)
One thermostat per zone:
A Digital black, 24 V (550-18000)
Third party requirements
Your system meets the following requirements:
It is a heat pump system that supports:
heating only
heating/cooling
It has a buffer tank, connected in parallel, as well as an additional bypass circuit.
The heat pump has a contact that indicates whether the heating/cooling mode is active.
Wiring diagram for multi-zone heating/cooling
The wiring diagram below shows how you can use Niko Home Control with your heat pump system and enable Niko routines for multi-zone heating/cooling.
The heating/cooling mode switchover is initiated by the partner system; pump control is not needed. A contact on the heat pump provides the signal to the Niko Home Control installation to switch from heating to cooling mode and vice versa.
Via potential-free contacts
Connect the contact on the heat pump to an input of the Niko Home Control digital potential-free sensor module:
Via 230V contacts
Connect the contacts on the heat pump via an external 230V to potential free relay to an input of the Niko Home Control digital potential-free sensor module:
Programming
Configure the heating or cooling module, switching module, potential-free sensor module and thermostats via the Niko Home Control programming software.
You can use the following programming example as inspiration or as a starting point: https://guide.niko.eu/en/penhc2/lv/heating-and-cooling-thermostat-controls-heat-pump.