Danfoss underfloor heating too warm

  • Erstellt am 2020-12-30 21:00:51

Niha123

2020-12-30 21:00:51
  • #1
Hello everyone,

the room temperature in my apartment is not right at all.

Although I set 22 degrees on the thermostat, the room temperature is sometimes 25 degrees.

I have done some research and read that you could reduce the flow temperature? Do I also have to reduce the return temperature?

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 could set?

Many thanks

 

knalltüte

2020-12-30 21:34:30
  • #2
Caution layman opinion: The controller marked in the top right of the picture is probably the flow temperature since 30° is set. That is already low. Probably the flow rate is too high and the thermostat can no longer regulate further down because the max is at the bottom. It probably needs to be rebalanced (hydraulic balancing). Professionally, I would say: RTFM :cool: or let the specialist who "messed it up" handle it. Considering we are supposed to be in the industrial age (Industry 4.0), it looks pretty "jerry-rigged" :p One more note: At the bottom, 2x power cables are impermissibly wired flying with a terminal block. Someone should look at that. That is dangerous!
 

knalltüte

2020-12-30 21:47:45
  • #3
I just see the plate heat exchanger from Danfoss in the middle. What is it doing there? (fresh water station?) Are you sure that this is the heating circuit distributor for the underfloor heating?
 

Tassimat

2020-12-30 21:47:46
  • #4
How old is the heating system?

If very old: controllers like the one marked get clogged over time and a pin inside then gets stuck. Then it no longer regulates.

Under the marked controller is a device from Wilo. Looks like a pump. As a first attempt, I would turn the controller slightly counterclockwise, hoping to reduce the flow for the underfloor heating.
 

Niha123

2020-12-30 21:48:19
  • #5
Thank you for the quick reply :)

I have already reduced the flow as well, I think the previous owner of the apartment tinkered with it too much.

I might still try to lower the flow temperature a bit.

If that doesn't help, I have no choice but to call a professional anyway :D

I will also take a look at the power cables, thank you!

 

Niha123

2020-12-30 21:52:27
  • #6
Unfortunately, I'm not that familiar, but normally it should be the heating circuit distributor for the underfloor heating.
 

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