UFH Running Too Expensive. Need help with settings

[Maurog]

Hello, 
I moved in a flat with central boiler and water UFH.
I had issues last winter so I couldn't check much, but it has been repaired and looking to use it properly.
Every engineer who came had a different opinion on the settings, and it's really confusing as I see that it is super expensive to run it. 
The system is an Oventrop, I had different feedback about the water temperature, who said to set 35/40° and who said that need to be at 60°!

After that there is another setting for the heating going from 1 to 7 (40 to 70°)
Here as well different opinions. 
The pump has a 1 to 6 setting and at the moment is at 3.

The rooms have analogic thermostats that I'm looking to replace anyway. 
I've learned to don't swith it off completely but I have no idea how to set all those values. 
Any advice would be very helpful 

[Nickfromwales]

Crikey! That’s a very complex arrangement. 
 

Could you take some pics standing a bit further away so we can see what’s what? 
 

Thanks. 

[JohnMo]

Let's step back a little 

 

How do you pay for your energy is it via a heat meter? Think I see one on the top of first photo on the left.

 

You can use the heat meter to help set up the system, it will tell you flow rate, instant kW, and dT. So use this as a performance monitor.

 

You need to pulling as little kW in as you can get away with. I would be doing it all low and slow, running UFH at 60 - not sure. I assume hot water comes in through a plate heat exchanger? And you pay based on how much energy is extracted via the plate exchanger?

 

 

 

 

[Maurog]

Thanks guys. 

Right now it shows 0.240m³ and 5.2kw

Ht 62.7

Ct 43.2

Dt 19.5

 

I did some adjustments as the water knob was at the maximum and the wilo pump at 6.

It was showing more than 10kw

 

[Maurog]

26 minutes ago, JohnMo said:

Let's step back a little 

 

How do you pay for your energy is it via a heat meter? Think I see one on the top of first photo on the left.

 

You can use the heat meter to help set up the system, it will tell you flow rate, instant kW, and dT. So use this as a performance monitor.

 

You need to pulling as little kW in as you can get away with. I would be doing it all low and slow, running UFH at 60 - not sure. I assume hot water comes in through a plate heat exchanger? And you pay based on how much energy is extracted via the plate exchanger?

 

 

 

 

The building has a central boiler and I pay for the kw I pull from the system