ᐅ House too warm, underfloor heating controller set to 1.

I also have the issue that I can’t get enough temperature in the large bathroom without turning the flow temperature quite high. I have now set the minimum flow temperature on the heating system to 28°C (82°F); below that, it feels too cold, meaning the desired room temperature of 24–25°C (75–77°F) is not reached and/or the tiles feel cold. The problem in our case is probably that not the entire floor area is heated with underfloor heating. As a result, only the bathrooms run at full flow (3 L/min), while all other rooms have about 1 L/min. The pipe spacing in the bathroom is 100 mm (4 inches), in other rooms 150 mm (6 inches), and in secondary rooms 200 mm (8 inches).

Is there a towel radiator that can still reach its full heat output when turned all the way up?

With my settings, our bathroom doesn’t even reach 24°C (75°F). There is simply not enough free surface area for that. I have the towel radiator turned up all the way. So far, no one has complained about the temperature being only around 22°C (72°F). As long as it stays like this, I can keep the ventilation rate fairly low. Alternatively, a heating cartridge could be installed inside the towel radiator.

Yes, we even have a rather large one, which cost more than the saved second heating circuit. Another mistake.

With the high and steep heating curve, it now feels very comfortable, and energetically I don’t mind. We also have the effect that about 6 m² (65 sq ft) of the approximately 19 m² (205 sq ft) bathroom are walled off; the sauna is located there, and there is no underfloor heating; additionally, the underfloor heating manifold for the upper floor is in the bathroom. Six heating circuits serve three bedrooms or children’s rooms, which are currently not heated. These 12 pipes obviously occupy a corridor that remains cold at the moment. All of this means that of the 19 m² (205 sq ft), only just under 10 m² (108 sq ft) are heated, which must be warmer as a result. When I come out of the shower, especially in the morning, I do like that.

If I were planning again, I would include the second heating circuit to allow 50°C (122°F) for the bathroom radiators.

Nordlys schrieb:
I think I have a similar problem. Some of the room thermostats are set to 0, others to 15, others to 21, but it doesn’t matter—everywhere it’s 21°C (70°F). Too warm for sleeping, unnecessary in the guest bathroom. But I won’t adjust anything myself; I’ll wait for the heating engineer to come and check it. That’s what they’re for. Karsten

He was here today. It was these valves in the distribution box. He said they have a default installation position and must be fully opened once, then they will close again. So he increased the ones still in their original state by raising the room temperature to 30°C (86°F), then we turned the system to star mode, and suddenly they dropped again. Now everything works. “It’s part of the service,” he said. “Happy to help anytime,” he added. So: call a professional before you try to fix anything yourself. Karsten

I’m curious what he would say if you regularly called about adjusting the heating curve. He would probably set it once, and set it high enough so that it’s always warm. That would then conflict with the room thermostats. When you need a new heating system after 8-10 years due to excessive consumption, he profits again. You were satisfied because he came out once and classified that as a service.

The fact is: this step should have been done during the initial commissioning. So it’s his fault. It’s not a service, it’s an obligation.

I have to agree with that, unfortunately, Karsten