Hydraulic balancing air-water heat pump + efficiency circulation pump

Quick update: I have now reached the 0.15 heating curve, which will run for almost 48 hours tomorrow morning (without throttling or anything similar so far). Indoor temperatures are still between 21°C and 22.5°C everywhere. Currently, it’s about -1°C to 0°C outside... I am currently recording consumption and temperature changes, but I will create a weekly list from that.

During the next week, I expect to receive the Raspberry with flow and return sensors for the underfloor heating circuits, then I can log the temperatures for each heating circuit. Then I will be at a stage with the heating curve where I can start adjusting the volume flows.

Received Raspberry with supply + return sensors for the underfloor heating circuits, then I can log the temperatures of each heating circuit.

I wonder if that still brings any benefit after the thermal balancing? The supply/return temperatures are largely irrelevant to me from the heating circuit distributor as long as the room temperatures are reached. The only control option is the manual valve in the distributor anyway.

But generally very interesting! Is there a keyword I can Google for?

I want to use the Raspberry and sensors for the balancing because nothing has been balanced in the system so far. Normally, it is said that the hydraulic balancing is perfect if you manage to get the same temperatures in all return lines. In practice, that will probably not work out, but if it is approximately the same within half a degree, I am satisfied...

Check the thread "einfaches Loggen von Temperaturen" in the Haustechnik Dialog forum. I only came across it through a colleague because he tinkers and programs with the Raspberry devices as a hobby. The colleague provides the Raspberry along with software programming on loan; I just had to get the appropriate number of sensors.

That looks good so far, I'm curious to see which final values will be reached.

So this morning, after the 48 hours with the 0.15 curve without significant changes in room temperature had passed, I set the lowest heating curve of 0.10.

It only goes lower if I lower the base point of the characteristic curve via the desired temperature, but I want to wait with that; currently, the outdoor temperatures have risen a bit again.... The 0.10 heating curve currently demands a flow temperature of 23.5°C at 4.5°C outdoor temperature.

How has the temperature developed in the individual rooms? Are rooms still too warm?