Worcester Bosch 30CDi Combi boiler clock not going round

[Gasguru]

A seemingly simple operation to remove/refit a boiler casing correctly and assess the seal condition (and any faults within) is often beyond many.

 

[johnny2007]

When you lifted the case if, there would have been a rubber seal which seals the case to the room, which prevents the products of combustion entering the room, hence why it needs to be a gas safe registered engineer.

Sorry, but i watched many times technicians take this cover off and it's just a flimsy piece of metal sealing nothing.
There's no gasket, washer, rubber or anything that could prevent a leak.
It's bare metal painted white.
If there's any seal it would be attached to the internal part of the boiler, but I never saw one.
Also, looking at this picture, there's nothing of that sort.

 

[Madrab]

Depending on how new the boiler is, the inside of the cover that's been taken off will have a nice big black rubber/foam seal on the inside. That creates the room seal against the boiler case.

Once the cover has been removed and then refitted then the boiler should really be checked using equipment that most normal users wouldn't own. Any room sealed case that is removed by a user is taking a risk that it isn't re-fitted and then sealed properly.

No matter how small that risk is it is still ill advised.

 

[Deleted member 267285]

Sorry, but i watched many times technicians take this cover off and it's just a flimsy piece of metal sealing nothing.
There's no gasket, washer, rubber or anything that could prevent a leak.
It's bare metal painted white.
If there's any seal it would be attached to the internal part of the boiler, but I never saw one.
Also, looking at this picture, there's nothing of that sort.
View attachment 221989

I stand corrected, however it must be as Rob said, a seal on the back of the cover case. There’s x2 side panels that appear to be foam insulated as well.

Like this one: https://buyplumbingonline.co.uk/worcester-87154014500-front-shell.html

 

[johnny2007]

I stand corrected, however it must be as Rob said, a seal on the back of the cover case. There’s x2 side panels that appear to be foam insulated as well.

Like this one: https://buyplumbingonline.co.uk/worcester-87154014500-front-shell.html

Surely not mine.
It's just a piece of metal, no rubber, no seals.

 

[Deleted member 267285]

Surely not mine.It's just a piece of metal, no rubber, no seals.

Ok, then I suspect you may have a failed room sealed appliance and advise you to stop using it.

 

[johnny2007]

Ok, then I suspect you may have a failed room sealed appliance and advise you to stop using it.

It's been like this from new.
Same as my son who as the same boiler installed a couple of days after mine.
How could that panel seal anything?
The boiler is open at the bottom where pipes go in, so a gas leak will not need to find a way out.
I think you're confused with other kind of boilers.

 

[Deleted member 267285]

I think you're confused with other kind of boilers.

I’m not confused, and I know Worcester wouldn’t send it out like that.

Here’s a piece of information from a current 30cdi model:

Guess we’ll have to agree to disagree on this one.

Edit: one thing when on a Worcester training course, they said flue integrity check must be carried out.

 

[ianmcd]

Ostrich syndrom, when the pros tell you what you have done is wrong, bury your head in the sand and deny it, dont worry some other DIY er will pop along and comfort you

 

[Madrab]

I think you're confused with other kind of boilers.

Nope he's not at all .... most, if not all of the newer greenstar CDI's have a front case like that. The large black rubber sheet seal fits against the faces of the upper combustion square as seen in your picture(the square that has the EV/main HEX, etc in it). All the pipes/cables entering from below into that combustion space are sealed in by grommets and glands. That way that upper square space stays room sealed.

 

[johnny2007]

Nope he's not at all .... most, if not all of the newer greenstar CDI's have a front case like that.

That's where the misunderstanding is: i'm talking about a 28i of 15 years of age, you're talking about a newer model.

 

[Deleted member 267285]

That's where the misunderstanding is: i'm talking about a 28i of 15 years of age, you're talking about a newer model.

Exactly, you introduced the misunderstanding as the thread and OP relate to a 30cdi, and didn’t quote what type you have. However if it’s a combi, it may still have a seal, if it’s the rsf model it may not have one.

@Caroline Doidge my apologies for making this thread longer than it needs to be. All pro’s original statements still stand, it needs to be a gas safe registered engineer who fits your timeclock/switch. You can opt for a blanking plate and use an external clock if you prefer, this will probably be slightly dearer though, although if that one ever failed, it would be non gas safe engineer required.

 

[Madrab]

i'm talking about a 28i of 15 years of age

Yup the older RSF's/junior's do have an inner combustion case.

As mentioned though, the OP has a CDI and the pic of the new Greenstar 'I' that you posted both use a room sealed outer case.

@Caroline Doidge - apologies to redirect your post but returning to the advice, just to confirm, the outer case should not be removed by an unqualified user, for safety's sake a professional should be employed to do the clock swap.

 

[martyndc88]

He's contradicted himself at least three Times with his make of boiler. He's done the job himself and doesn't care if he's done something which is unsafe. After all it was only a few screws

 

[johnny2007]

He's contradicted himself at least three Times with his make of boiler. He's done the job himself and doesn't care if he's done something which is unsafe. After all it was only a few screws

Would you please point out where i contradicted myself on the make and model of my boiler?
And, I had it serviced every year without fail.
It is only a couple of screws in my case.