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Zigbee pilot wire modules

The NodOn SIN-4-FP-21 (also sold as Equation SIN-4-FP-21_EQU) and the Legrand Céliane with Netatmo cable outlet control an electric heater through its pilot wire. With Zigbee2MQTT, they expose a select entity for the pilot wire mode, with the same options: comfort, eco, frost_protection, off, comfort_-1 and comfort_-2.

Configuration

  1. Use Zigbee2MQTT: with ZHA, these modules only expose an on/off switch.
  2. In the VTherm over_switch, select the pilot wire mode entity (select.*_pilot_wire_mode), not the switch entity of the module.
  3. In the command customization, set the on command to select_option/option:comfort and the off command to select_option/option:frost_protection.

Avoid eco as the off command: the internal thermostat of the heater keeps heating in this mode.

Recommendations

  • Set the comfort temperature of the heater above the VTherm setpoint, so that its internal thermostat does not cut the heating.
  • All the modules of a single VTherm start at the same time: take it into account for the power management.

Device configuration

Initialization

Go to your settings, then integrations, then click on add a new integration. Search for Versatile Thermostat.

Click on Thermostat over a switch.

Basic attributes

Go to the "Main attributes" section.

  1. Choose a name for your thermostat
  2. Set the temperature sensor for your room
  3. If you are using the Zigbee protocol and you have a "last_seen" entity for your temperature sensor, fill it in.

You can validate and return to the configuration menu.

Underlying entities

Go to the underlying entities section.

  1. Add the switches that will be controlled

You can validate and return to the configuration menu.

Community references