Water in Worcester Greenstar flue.

[bert large]

Hi, can I pick your brains ?

A customer has been having an occasional problem with water getting into the outer section of a Greenstar vertical flue system & consequently then running into the boiler.

When this first happened I put it down to perished seals on a 90 degree flue elbow in the loft & I replaced it with 45 degree elbows so no water can collect in the flue..... however, the problem happened again, albeit about a year later.
It was noticed after a severe storm. Having previously checked the external flue & found it to look OK I can only assume rainwater, driven by strong winds, is driving up the rear elevation of the roof & up into the inner flue. It must be just bad luck that the flue lines up exactly with the trajectory of the rainwater.

Has anyone else suffered this problem, or can think of another possible cause please ?

Sorry for the long-winded post but I can't explain it any other way. Cheers

 

[GasmanxxxR1]

Yes, I have seen driving rain get into an air intake. Only real solution is to change terminal location if possible

 

[bert large]

Thanks Gasman, that's exactly what I had planned to do, move the flue further down the forward face of the roof so any rain goes over the top.
Just seeking reassurance that I wasn't barking up the wrong tree really 🙂

 

[Ermintrude]

Fill air intake with expanding foam?

 

[Jimbob]

I had this on a green star other day, was the green seal on the top of the flue... Really crappy seal.

 

[bert large]

Where is this green seal please Jim ? I'll check it out

 

[Jimbob]

It's was the inner exhaust flue seal to the flue at the very top inside the boiler. It was letting water through and was dripping over condensing chamber and work down through onto the spark generator and shorted it causing a fault. This was on a 40kw greenstar

 

[gassafe]

I had this on a green star other day, was the green seal on the top of the flue... Really crappy seal.

ive never noticed a green coloured seal inside any Worcester flue bits?

 

[Jimbob]

It's the flue seal on the boiler, definitely green.

 

[Ermintrude]

Had same on logic heat only with vertical...... Someone thought they could use isar vertical adaptor? Top of case was soaked. Didn't think of condensation from poc being problem!!

 

[Dotty]

Shifted to private forum.

 

[vern]

ive never noticed a green coloured seal inside any Worcester flue bits?

Me neither, you talking about HE?

 

[pipefitter]

I had the same today on a greenstar junior ..water dripping out from the air intake onto the fan just missing the plug then dripping down just missing the gas valve ...

 

[Jimbob]

Me neither, you talking about HE?

Yeah was a HE plus

 

[albatross]

It was noticed after a severe storm. Having previously checked the external flue & found it to look OK I can only assume rainwater, driven by strong winds, is driving up the rear elevation of the roof & up into the inner flue. It must be just bad luck that the flue lines up exactly with the trajectory of the rainwater.

The problem is caused by the gays. You have probably heard several times in the news that god is punishing us with extreme weather because of all the gay rights in the country recently. Not much proof you may think but no one in Uganda has water in their flues!

 

[Ermintrude]

My name is Guy to avoid any confusion and to avoid being called gay and then smited by the almighty I'm getting a sex change and will be called carol .

 

[bert large]

Well, moved the flue today, 3ft further down the roof so it is now sheltered from prevailing SW winds.

With torrential rain & strong wind forecast tomorrow it will get an early test.
Thanks for all the input.

Regarding the storms being Gods punishment for gay marriage, it's interesting that the "popular press" chose not to report Councillor David Sylvester's controversial & often quoted views whilst he was still a Tory Councillor, only doing so once he had shifted to UKIP.
The UK press is as rotten as the political classes !

 

[arran197]

I think the newer greenstars come with a rain catcher now don't they? I know early versions of the Baxi Duo Tec and other associated boilers no rain catcher was fitted, but they introduced it very shortly after releasing them. Obviously rain can cause an issue with the air in take, especially when on full chat with the fan sucking in the air at a high flow rate.

 

[vern]

I think the newer greenstars come with a rain catcher now don't they? I know early versions of the Baxi Duo Tec and other associated boilers no rain catcher was fitted, but they introduced it very shortly after releasing them. Obviously rain can cause an issue with the air in take, especially when on full chat with the fan sucking in the air at a high flow rate.

Yes pal, a Baxi patent too