New under floor heating - start up process?

[alexeix]

Hi,

We've just installed wet under floor heating and it's now time to turn it on - couldn't come any sooner, since temperatures outside have plummeted!

Question is, what temperature should it be started at and how much should we turn it up each day???

I started it off at 7 degC last night and have now upped it to 9 degC, but the concrete floor just feels just as cold as before - no sign of any vague warmth.

The ambient temperature in the room is around 10 degC.

Any advice from professionals who have experience installing and running UFH?
How much can we turn it up each day, without risking damaging the concrete floor?

It's really cold and I'd like to know how soon we can start to feel the benefit, assuming that it's working of course...

 

[Agile]

Don't you have a heating installer to commission it?

Tony

 

[alexeix]

A heating engineer installed it, but we had to wait a couple of weeks for the screed to try, before turning the temperature up.

He is coming back tomorrow to do some more work (not on the UFH), but the system is/should be operational. It's just a case of turning up the thermostats.

So my question stands...can anyone advise about how much to turn it up each day, so that I don't risk cracking the floor?

It's very cold in my house right now...

 

[Agile]

Surely you should be asking him then?

It is often decided to increase the temp by 1 C per day!

But that depends on the cement mix and water content !

If it is cold then use electric fan heaters!

Tony

 

[alexeix]

Right, but unfortunately he's quite difficult to get hold of.

Also, the whole point this forum, is surely to be able to ask questions/talk about the various topics.

 

[Agile]

There are too many variables !

Quite apart from the question of liability!

Since you are paying him then I would say that you should be asking him!

You said he is there tomorrow. So why not ask him in person?

Tony