Worcester Bosch 30cdi strange flue design

[gpweston]

Had this new boiler installed a few weeks ago and am wondering why the top of the vertical flue seems to be upside down. It's not a normal cone-shaped top. It's an upside down cone shape so water gathers in there.

Any idea why it's like that ?

 

[Agile]

Is it a condensing boiler?

Was it fitted by a CORGI registered installer and do you have his registration number?

Tony

 

[gpweston]

It is condensing and was fitted by a CORGI guy.
I've checked on Worcester Bosch's website and the "upside down cone top" can be seen in the photos of the vertical flue.
Seems like that's deliberate and it comes like that from Worcester Bosch.
I'm just interested to know why !

 

[Agile]

A "CORGI" guy who had just fitted a boiler last week turned out NOT to be CORGI registered at all and yet he had been writing out Gas Safety Certificates for the Landlords 13 properties for several years!

Did you see his photocard or check his registration on the corgi-gas web site?

Tony

 

[gpweston]

I saw his photocard, checked him out online, everything ! There's even been a Worcester Bosch guy here because there was something wrong with the boiler.

The flue looks just like the photos on Worcester Bosch's website and it came in a box already assembled. I don't think there is anything wrong with the installation, I'm just interested to know if anybody can explain why the top of the flue is upside down cone shaped such that water gathers in it....

I'll email Worcester Bosch and ask them.....

 

[simond]

I suspect it is to deflect the flue gases as they leave the flue system. We fit lots of these but I can't recall what the very top looks like.

Bear in mind a condenser flue is designed to get wet. Some condensing boiler models (not WB) we fit just have an open vertical end for the rain to come in.

 

[Agile]

I saw his photocard, checked him out online, everything !

There's even been a Worcester Bosch guy here because there was something wrong with the boiler.

Well done for properly checking him! If only everyone did that it would stamp out unregistered installers.

What was the problem with the boiler? Its always interesting for us to know about warranty repairs as it helps us to build up experience of the issues affecting the various models.

With regard to the inverted cone. As Simond says its just to deflect the flue gases outwards. If rainwater collects in the top that has no effect.

If it really bothers you then fill it up with car body filler but be prepared to get laughed at by gas engineers!

Tony

 

[simond]

what about planting some nice daffs in the top?

 

[gpweston]

Mmmm, nice suggestions. Think I'll stick with the water gathering in there !

Problem was with a very loud thump as the boiler fired up and a strong smell of fumes just after it fired on warmer drier days. Turned out the mix wasn't set quite right, it was burning rich. Small and thump were caused by the strong mix.

The WOrcester Bosch guy put a Co2/CO probe in the flue just above the boiler and fiddled with the mix settings until the read-out was right.

 

[Agile]

Hmme...

I would class that as installer error for not properly commissioning the boiler. The installer probably does not even own a flue gas analyser!

Worcester are very accommodating about those issues but then their boilers are quite costly.

If that happened with some manufacturers then it would be a chargeable call as there was nothing wrong with the boiler.

In the trade we call that "explosive ignition" but the manufacturers prefer to call it "noisy ignition" so that they dont alarm their customers!

Tony

 

[Gasguru]

Tony said

Worcester are very accommodating about those issues but then their boilers are quite costly

I though they were expensive due to the continual mailshots and DVD's they send you, not to mention the the fleece jackets and other bribes.

And not forgetting Mr Bisbys appearance fee.

 

[sm1thson]

my dads boiler ha sthis flue -we thought it was upside down aswell! it really it a crap design if you ask me as it looks so upside down many people would be tempted to turn it round. i wouldnt be suprised if it was designed the other way and now they put it on upside down as they found it works better!

 

[bster]

is this the flue your onabout?

http://www.worcester-bosch.co.uk/index.php?fuseaction=accessory.detail&con_id=127781&detail_id=6336

if so whats 'upsidedown' about it?

 

[gpweston]

It is that exact flue. But you need to get a view of the top of it. The "lid" is an upside cone.

 

[bster]

righty ho,

fitted loads of them and have never even noticed