Combi Boiler

Jeepers_Creepers

jefaz07 said:

Here you go again. No he cannot DIY the expansion vessel. It’s behind the case which is not decorative and forms a seal. It forms part of the ‘combustion circuit’ and the OP isn’t allowed to remove it. I have reported this post again and I will continue to do so where you offer advise against the gas regs. 

You offer some great advice in the whole.m, very informative...but there needs to be a limit.  

Bull and the other word.

You ONLY have to be competent. I have replaced - the pump, P2P exchanger, Hydroblocks, flow switch and other parts in mine. Oh, AND I fitted the boiler in the first place AND I ran the new gas pipe to it.

None of this was illegal. Why? Go on - you say it - I am c......

Your reference to 'combustion circuit' is as misleading as your other reference to the change in resistance due to a soldered connection. To gain access to most EVs doesn't require any approach to gasy or burny bits - I would never ever suggest anyone goes anywhere near these. Ever.

If you keep trying to delete posts unfairly, I will have to make my own approach to MSE. Just behave, you.

jefaz07

On your point of fitting the boiler and running the gas pipe, I assume you got it signed off be someone? If so - well done, you’ve admitted breaking the law.
It’s not at all misleading. It either forms part of the combustion circuit or it doesn’t, in this case it does. It’s really that cut and dry. And as for the modifying boiler parts to suit...I don’t feel I need to go into that one.  

Taking the case off your boiler that I’d part of the combustion circuit? No you can’t. Again It’s written there for you...and If MSE come knocking I’ll tell them the same....as for the boiler...

jefaz07

Here is the part in which you reference...right next to the flue collector and other ‘gassy parts’ or ‘burny parts’ so to suggest you wouldn’t tell anyone to go near them whilst telling someone to go near them is a little amusing. 
Also for you benefit I have taken a picture of the seal on the case, something that forms part of the combustion circuit. I’ve also added the manual which stated the checks needed to be carried out after removal and how you can demonstrate you are c....ompetent..there I said it. 

It tells you  what competent is and how it’s measured. 

In short OP...no you cannot the this case off and this poster is talking absolute nonsense. 

kev2009

My boiler is similar, its the logic combi 24  (not plus version), the front case literally has a couple of clips on the front edge and it appears to hook on at the top, from when I've watched the engineer come and service it and comes off very easy, no screw driver etc is needed, its literally off in seconds.
Whilst I'm happy to full it up with water using the valves underneath, I'm not overly confident on doing any sort of repairs to the boiler myself, I'd sooner get someone in but I like knowing what's what so i can be fairly sure the issue is fixed and not be unfortunately to get someone who just wants to keep coming back to "fix it" and taking more money from me or advising it has "another" issue that needs fixing to get more money so I'd like to be fairly familiar with some things in principal and always good to find out how these things work so I'm happy with the info advised so far.  Will continue to monitor and report back in due course.
Kev

Jeepers_Creepers

Thanks for these posts, Jef.

For anyone competent enough to recharge their EV, this is where you test and repump it:

Jeepers_Creepers

You are being pedantically silly, Jef.

"And as for the modifying boiler parts to suit...I don’t feel I need to go into that one."  Oh pleeeez - let's do.

Oh, I already did in the thread you had deleted. Where I pointed out the values of the actual resistances involved, and how your technical claim on this aspect was therefore nonsense - as if a soldered joint would have a gnat's crochet of an effect on 15k ohms. Or was any more 'dangerous' than what the OP had - a faulty sensor. Every time a sensor fails, a boiler becomes 'dangerous' does it?

See? A bit silly.

And you've done it again here, citing regs and assessments that simply do not apply - like CPA1 APS. If you'd like to point out where, as part of recharging the EV, someone would have to carry out a check on 'combustion performance'? No, of course they wouldn't.

It's all a bit disingenuous, Jef.

Kev has made it clear he's not happy to 'go there', and that's absolutely fine. But to suggest someone who is completely competent to do so shouldn't even attempt it, is, well, silly.

As for me breaking a law - pleeeeze point out which one.

fezster

Jef is right on this one. I believe it used to be the case that HSE guidelines simply stated "competent person". But if you search now, it clearly says "must be gas safe registered" - leaving no room for doubt (from what I can see).

The point about integral expansion vessels is that they require the removal of the boiler front cover. In a lot of boilers (all?), the front cover is part of the combustion chamber. When replaced, various gas checks should be done (I forget what they are called). Legality aside, if you are unable to carry out those checks, how do you know it has been sealed correctly?

Now the reality - a lot of gas safe engineers remove and replace the front cover without carrying out any checks. They should do them by law. If something were to happen, they would be held liable. You could then argue if they do it, why can't I. But that's the rules. No one can stop you doing whatever you like in your own home, but it doesn't make it right from a legal standpoint. 

Jeepers_Creepers

Fair do's, Fez. No more inside boiler casing help.

fezster

My personal view is that providing information which could apply to both situations (ie. One which is DIY-able and to one which is not) should be permissable. Pumping an expansion vessel falls under that.

If the OP had not said which boiler he had and/or had a separate EV fitted, the advice would be absolutely fine. I see no difference in providing the same advice, as long as it is caveated with the info that opening the boiler front cover is not permitted.

I know others will disagree as a similar conversation took place on another forum. 

Jeepers_Creepers

Cheers, Fez.

Out of interest, I did look on YouTube about how to check and repressure an EV just to see how 'out there' the info is, and there's plenty on there - even from professionals. Some give the caveat 'This information is for trainee GasSafes only...'. Not all.

But I accept what you say, and I won't be advising on any 'under-the-cover' stuff any more.

That leaves me in a dilemma - I have a LH Hydroblock and divertor motor here to fit on my boiler, and really don't know what to do about it now