Pressure testing underfloor heating

Could you expand on that Plumberboy? In circumstances where a wet leak would be disasterous I often use compressed air at 5 bar and leave it overnight if necessary.
Thanks.

 

It is tested with water and left for seven days then screed is applied and left for another seven days,so if there was a small leak it will be found before the screeding process,you will notice small water leak in metres and metres of pipe not so easy to notice air though.

 

Fit manifold, leave off actuators or loosen, test to pipe spec, normally 1.5 x working pressure, don't worry about removing air it will only compress, leave full incase of damaged by screeders etc, fill through flow or rtn & cap the other

 

Just test exactly as the manufacturer specifies. Normally up to 6bar for a day (I've never heard of pressure testing for a week..that would hold the job up!). Then reduce to 1bar for the screed to be put down. If I'm doing a job where I don't know the builder I normally take him and the customer aside and explain the pressure testing process and that if there is a problem after the screed has gone down then it is the builders problem 'cos it was ok before he did his bit.

Normally leave the floor then for about 4 weeks (depends on the time of year) before tiling.

 

Most manufacture's specify 7 days before screeding, I know Worcester certainly does,it does hold the job up I agree but that is considered good practice.