ᐅ Setting the underfloor heating – desired temperature preference

The heating curve can be the root cause. The room cools down, the valves open. Now the heating system pushes very high supply temperature into the underfloor heating. Due to the system’s inertia, the screed heats up to a correspondingly high temperature. This then heats the air. The valves close, but the screed continues to release heat. The entire building mass is heated up quite significantly. While the air cools down again, the rest of the building still stores heat. This makes the room feel very warm.

If the air cools down, the whole process starts over.

Apart from that, if the heating curve is set correctly, the room should not overheat at all.

However, this is just one possibility. Other causes are also possible.

Ok,

Joedreck schrieb:
But the heating curve can be the cause.

If the heating curve is set so absurdly that the system is operating at around 50-60 °C (122-140 °F), then that could certainly be the case.

However, the original poster would probably have also complained about their high electricity or gas meter readings. That’s why I’m thinking more along the lines of the heating curve being set 5-8 degrees (9-14 degrees) too high. In that case, nothing serious should happen.

To the original poster: What supply temperature is your heating system currently running at?

Best regards,

Andreas

A boiler suggests a gas system. The standard setting for the heating curve is about 1.4. A value between 0.2 and 0.3 would be appropriate for underfloor heating.

At the current temperatures, I estimate a supply temperature of 55°C (131°F). That is excessive.

We have a heating curve of 0.3, the supply temperature is 30°C (86°F), and in the living room/dining room/kitchen area (5 heating circuits) we still have 24°C (75°F), but in the bathroom (1 heating circuit) only 22°C (72°F).

This is simply due to the larger area in the living room and possible solar gains.

Or due to an incorrect hydraulic balancing