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C

Calypso

Hello all. I would very much appreciate your suggestions and advice. My husband and I have just bought a little house - we're having building work done and are properly moving in next week. The gas yearly check was outstanding and we organised this. The boiler is a Vaillant combi boiler and is apparently a very good one. The boiler itself is apparently working fine, but the men today, after lots of checks, told us that the pipes are just not sufficient - it sounds like the guy who installed the boiler (2 years ago) left the original pipework to the previous boiler in place, rather than lift up floorboards and replace the pipes. The result is that the whole thing has been classed as 'immediately dangerous' and shut off. There's also a small leak, which they haven't located yet, but is expected to be upstairs under the floorboards. They also believe that he has fibbed on the installation form, as it says the pressure was 19MB when it is currently 6MB, and at one point was under 5MB(!). Apparently it's so bad the boiler is struggling if it's used for more than one thing, such as the hot tap running and the gas hob being used at the same time.
(sorry about the line above - can't seem to do paragraphs?) The guys today suggested I called the man who installed the boiler and get him to come back and make sure it's done properly - they'll gladly look it over and make sure it's safe and working efficiently (in an ideal world they know he should be reported, but that leaves us without a working boiler for however long until we can afford to have it fixed). I called the installation man who tells me that it was fine when he fitted it, and it must be a blockage that's causing this drop in pressure. I checked this over with the other boiler guys who believe this is a load of rubbish. The installation man initially said he can't come out until next week, but when I told him I spoke to a technical guy in Gas Safe Register, he gave me a call and said he'll be round tomorrow, obviously free of charge.
I am not sure where this leaves me. I fear I am going to be given a load of rubbish, and he will look it over and tell me it's nothing he's done. I feel very out of my depth. The trustworthy guys were very helpful and said they would do the work for me, but they don't think I should be paying for it, so they suggested I approach the installation guy first and get him to put it right, and afterwards they'll check it for me. If I had the money, I'd pay the trustworthy guys to do all of the work, but I don't! Any advice? Is it possible that the installation guy did in fact install it properly and there could be a blockage? (looking very suspicious as actually our surveyor looked at the pipes and made some comment about them looking too small to supply the modern boiler! Wish I'd checked that out!)
Thank you very much and apologies for the long post...
 
Hi calypso and welcome I think the fact he said he was willing to come back after you mentioned Gassafe will give him a chance to rectify any problems he may have left behind or missed ask to see his gassafe card and check it'sup to date and if you are not happy with his explaination or his unwillingness to sort this out contact gassafe and see what they say .......regards Turnpin
 
welcome to the forum Calypso.
First see what happens tomorrow,
if you get conflicting opinions from the previous fitter and your current work team,
then involve gas safe, at least they will be giving an impartial view.
As to the leak, after two years, that has to be seen as a new problem.

the pressure loss!!!
that could start a detailed description of pipe sizing and permissible drops, theories on what has happened?
without seeing and testing for yourself, it would be a pointless debate.
Clearly the problem needs resolving and hopefully tomorrow will leave things looking clearer.
 
With regards to your pressure drop it could be down to a
a regulator failing at the gas meter,which then is the gas transporters problem

Which should've been picked up during the safety check.

Give the installer the opportunity to investigate. It could be copper sulphate causing the problem.
 
If the guys you had in recently have said the pipework is not sufficient, this indicates that it is probably undersized. Combination boilers like this Vaillant normally require a minimum 22mm copper gas run up to the boiler sometimes even greater depending on the length of the run and how many other appliance are connected to it. On the installation of the boiler the installer should have made sure through calculation and testing that the gas installation pipe was adequate for the new appliance in accordance with manufacturer instructions and BS6891. As for the leak; it would be difficult to lay this one on the installer as this could have developed after the installation, but obviously the recent guys have picked up the problem and dealt with it appropriately. I am pleased that the original installer is returning to day, even though it took the Gas Safe Register stick to persuade him. He should rectify any of his defective work at his cost, if he argues the point, report him to Gas Safe Register under their complaints procedure and they will send an inspector out to look at the installation work and will raise a notice against the installer to rectify any gas safety defects related to his work.
 
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See it lots and lots. Combi cowboys! Whambam thank you mam. Never seen a combi boiler on 8mm tube yet.

Probably never de burred a pipe or used a pulled bend opposed to an elbow.

Is condensate run externally in 21.5mm plastic? (Just another favourite if the combi kids)
 

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