ᐅ Danfoss underfloor heating too warm

Created on: 30 Dec 2020 21:00
N
Niha123
Hello everyone,

In my apartment, the room temperature is not right at all.

Although the thermostat is set to 22 degrees, the room temperature sometimes reaches 25 degrees.

I have done some research and read that it might help to reduce the flow temperature. Does the return temperature also need to be reduced?

Could someone please tell me, based on my photo, where I can adjust the flow temperature and where I can adjust the return temperature? Maybe also a tip on what values I should set?

Thank you very much


Compact heating and plumbing system with valves, WILO control unit and pump.
K
knalltüte
30 Dec 2020 21:53
Niha123 schrieb:

... I think the previous owner of the apartment experimented a bit too much...
You're missing an "on" in your sentence :p
N
Niha123
30 Dec 2020 21:53
Tassimat schrieb:

How old is the heating system?

If it’s very old: controls like the one marked tend to get clogged over time, and a pin inside can get stuck. Then it stops regulating properly.

Below the marked control there is a device from Wilo. Looks like a pump. As a first step, I would try turning the control slightly counterclockwise, hoping to reduce the flow for the underfloor heating.

Built in 2013, so I believe the controls should still be fine.

That’s exactly the pump, then I will try lowering it a bit, thanks.
tomtom7930 Dec 2020 21:54
What happens if you simply set the controller to 20 degrees? I assume it will just act as an on/off controller.

Show a picture.
K
knalltüte
30 Dec 2020 21:55
Tassimat schrieb:

How old is the heating system? ...
Approximately 7 years old (nameplate Danfoss heat exchanger)
K
knalltüte
30 Dec 2020 21:56
or the ERR is disabled! (as is quite often recommended here in the forum)
N
Niha123
30 Dec 2020 22:01
tomtom79 schrieb:

What happens if you just set the dial to 20 degrees? I guess it will just act as an on/off switch.

Show me a picture

I’ve even set the dial below 20 degrees at times, but the temperature doesn’t change much.

Siemens wall thermostat with rotary knob for temperature adjustment, scale 10–30 °C (50–86 °F).