Underfloor heating with zone control

[DriesA (Dries)]

Hi Lectere,

I followed a different approach. Instead of just switching on/off my gas boiler, I control both target and current temperature of the boiler based on the room with the biggest delta.

E.g. if in room A the current temperature is 18° and target is set to 21°, and in room B the current temperature is 21° and target is set to 22°, the DIYLESS thermostat will have the target and actual temperature of room B.

It allows the gas boiler to modulate (I saw in your initial post that you have a heatpump, modulating might not be relevant in that case). Modulating is more energy efficient (for gas boilers) instead of turning on/off.

Details are described in this topic:

Opentherm Multi Room brainstorming / ideas

Hi David, Thanks, this is great coding! I further adjusted it, so I also know which area is requesting heating. This is my sensor that is calculating the right heating delta. I did set it up in the (old fashioned but reliable) configuration.yaml. If I use the UI, I received an error that the entity state is longer than 255 character. - sensor: - name: Verwarming - ruimte met grootste delta unique_id: heating_deltas state: >- {% set ns = namespace(items=[]) …