Pressure testing a wet underfloor heating system

[Mr_T25]

I will run several wet UFH circuits (ground floor to be screeded system and 1st and 2nd floor pro-fix panels and then to be screeded / levelling compound).

Is it best to pressure test these? If so, what pressure does UFH normally operate at, is it between 1 and 2 bars like a boiler?

The above questions are just for my own interest, builders will be doing the work.

 

[PrenticeBoyofDerry]

It will be working pressure of the boiler, then factor in.

 

[Mr_T25]

What do you mean “then factor in”?

So if the boiler is 1 bar, does that mean my UFH needs no more then one bar pressure?

 

[dilalio]

The MI's of the UFH system you have selected should provide guidance.

 

[Mr_T25]

They will but I want to research before and that’s the point of a discussion forum like this.

 

[dilalio]

They will but I want to research before and that’s the point of a discussion forum like this.

But my point is that the value and method to which it is pressure tested will vary according to manufacturer.
For example, Wavin instructs 1 bar for 45 mins; then 6 bar for 15 mins; then 2 bar for 15 mins.
And, as your warranty/guarantee depends on following the MI's, that's exactly what you must do.

 

[Mr_T25]

The floor heating warehouse (supplier) has provided no such instructions.

 

[dilalio]

Perhaps you should call them and ask for such