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Use a warix flange, or similar and makesure the cold feed is correctly installed from cold tank ie BELOW hot cylinder feed.

I assume by power shower you mean one with an internal pump? If this is the case it shouldn't be connected to the mains - with or without a pressure reducing valve (if this is what you mean by a 'reducer'?)

Turn the power off completely and then check the lever - resistance? Take a look at #17 in the FAQs. That should help more easily than us playing tennis in a thread! Good luck.

If you set it for HW only/CH off does the lever on the valve then have resistance?

Glad to be of assistance to you. :wink: :wink: :D

Well you taught me nothing but I'm sure someone might have learnt something! :wink: :)

It would appear to be a fairly quick fix. Make sure the cold feed to the pump is correctly (safely) located in the cold tank while you're at it.

Sure mate, I meant that tongue in cheek because you'd quoted me! :wink:

You'd be best off re-piping the pump correctly using a warix flange, for example, getting rid of the aav in the process. You could do this yourself if you're a bit handy. For the record the black screw should be loose on the aav.

Surely delays caused by bad/incorrect/otherwise unacceptable workmanship are the responsibility of the builder and tradesmen onsite and, therefore, any extra costs incurred by you (like additional rent) as a result should be laid at his/their door. You want, and need, the work completed...

Have you got a room stat?

What's with the primary school lessons? :roll: Surely we're all aware of these simple facts? :?

Indeed, achrn could you go down the polyprop D2 route?

Depends what you consider expensive! It wouldn't be a problem to the existing shower and would ultimately be your best option. It might add 3/400 quid or so to your job...

Cheers.

Yes, thankyou for that :roll: Fact is they 'read' to .001m/3

Where are the pics then? :?

Yes, beyond the tundish. Accepting an incorrectly installed D2 is not really an option. It doesn't comply. It is possible to use a hepvo waterless trap and polypropolene waste into the soil stack these days. Could this be an option for you?

Yes, you can get them.

You can box your pipe work in as you wish bearing in mind the possibility of future access requirements. As for boxing/putting the boiler in a cupbord minimum clearances are given in the boiler installation manual.