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A prv on the primary circuit!!! :shock: ...I think we need a photo

Part 1 can only be used as a direct replacement for a part 1 Part 1 isn't safe in backsiphonage circumstances as it fills from under the valve, part 2, 3 and 4 fill from above the valve Fit part 2

Surely the T&P valve would open

Is the lockshield open on the cold rad?

I just can't believe some people, 'I read the manual, I think I'm competent' You can only prove competence by getting your ACS certificate - that training/examination proves to a governing body that you have proved yourself competent It's simple, do you have your ACS certificate? if no...

It does say in the installation manual, and you'll have to adhere to the regs on this...sounds like you'll need to reroute it so it exits the room into fresh air, although I have seen one go out through a conservatory!!!

The reason the stop end moved was expansion of air as you were soldering, you need either an open end or something to stop it moving ...can't you use a compression stop end ...is the long run a dead leg

Is the water dripping off the underside of the lid as a result of evaporation/condensation

Your stored hot water should not be stored at temperatures below 60°C (140°F) to avoid the risk of legionella!

Any sign of water from the pressure relief valve going out through the wall?

So what are you going to do when the flexy needs replacing?

You may have to run a stanley knife down the tongue if your boards are tongue & groove You can hammer the nails down through the board with a punch ...I'd rather take a bit longer, I hate knackered floorboards, don't ask a spark to do it, they're butchers (ducks for cover :roll: )

:roll:

I've worked in too many houses where the CH pipework was screeded in and leaking so bad that the walls were suffering from serious dampage

Condense into an internal wastepipe is the recommended way

So how does an 18 month old baby reach the controls on a boiler?

The only thing you can safely wrap around copper pipes without fear of oxidisation is - air! ...that means sleeving or dry foam insulation

The easy way to talk round customers is telling them it'll save them a lot of money to have a stat fitted, and it'll let them have full control over the temp they want

As some of the rads are on a 'single pipe' system, putting TRV's on any would only work in one room, once the TRV shuts, all the rads on that pipe start cooling too

You do know how they work don't you?