Do I need a Gas Safe engineer to extend boiler flue?

kuepper

During the downpour at the weekend I had occasional bursts of water dripping from my Glow worm 30 cxi boiler. Thought at first it was the boiler but now rain has stopped the drips have stopped so I assume it was rain related. Looking outside the length of flue projecting horizontally from the wall is very short, at least 4 ins shorter than any neighbours as far as I can see so I am guessing that's the issue.

Are there any rules about length/type of flue, do you have to use same brand etc and can anyone put a longer flue on it or does it have to be someone Gas Safe registered?

bris

Yes it's the most dangerous part of the boiler and must be installed by a gas safe registered engineer.


It's a condensing boiler so even if there is water coming inside the flue its just going to go down the condensate trap, that's what it does with the condensate obviously.


It's more likely to be the gap between the wall and flue has been badly sealed allowing water to run down the flue.


Get someone out to check other possible causes.

kuepper

bris wrote: »

Yes it's the most dangerous part of the boiler and must be installed by a gas safe registered engineer.


It's a condensing boiler so even if there is water coming inside the flue its just going to go down the condensate trap, that's what it does with the condensate obviously.


It's more likely to be the gap between the wall and
flue has been badly sealed allowing water to run down the flue.


Get someone out to check other possible causes.

So I'd have to get a Gas Safe person no matter what, just in case etc. It was only annually serviced last Tuesday under my Scottish Power annual boiler cover and nothing was mentioned, do you think the situation would be something i'd be covered for if I called them out?


Edit: Just checked and it's seems not: "boiler: the single mains-connected natural gas boiler cared for by this plan (this only includes
the parts inside the boiler casing; it does not include the flue)." Annoying!

London50

I think you would be more annoyed if one or more of your family died as the result of you not having the job done correctly by the correct people.

kuepper

bris wrote: »

Yes it's the most dangerous part of the boiler and must be installed by a gas safe registered engineer.


It's a condensing boiler so even if there is water coming inside the flue its just going to go down the condensate trap, that's what it does with the condensate obviously.


It's more likely to be the gap between the wall and flue has been badly sealed allowing water to run down the flue.


Get someone out to check other possible causes.

Just belatedly realised I can see where the flue enters the inside wall and there's no evidence of any water penetration around it so doubt it's a seal problem.

MisterP123

I doubt it's anything to do with the flue. Get someone out to look at it. Something could've been disturbed during the recent service.

JimmyChanga

It could be condensed water leaking. It could be rain coming through the flue. It could be many things.

Each boiler's flue size is specific. it will be in the installation manual. Don't judge it by whatever your neighbours have.

Let it be for now and monitor it.

You shouldn't be touching anything related to gas/combustion unless you're competent.

TELLIT01

As this has only happened since the boiler service it's highly likely that something was disturbed at that time. Get on to the company who serviced it and get them to investigate and fix.

southcoastrgi

The flue should be close to the wall, if your neighbors flues are sticking out of the wall they aren't fitted correctly, there are a lot of boiler manufacturers that will refuse warranty calls if any white is showing on the flue

TELLIT01

southcoastrgi wrote: »

The flue should be close to the wall, if your neighbors flues are sticking out of the wall they aren't fitted correctly, there are a lot of boiler manufacturers that will refuse warranty calls if any white is showing on the flue

With a combi boiler (don't know about others) the flue often just goes straight out the wall and terminates there. The flue pipe from my neighour's boiler protrudes a good 6 to 9 inches further than mine. I suspect that's what the OP is referring to.

TREVORCOLMAN

TELLIT01 wrote: »

With a combi boiler (don't know about others) the flue often just goes straight out the wall and terminates there. The flue pipe from my neighour's boiler protrudes a good 6 to 9 inches further than mine. I suspect that's what the OP is referring to.

neighour's protrudes a good 6 to 9 inches further than mine

Thats life!

:rotfl: