Worcester vertical flue.

[Hobo128]

Hi
The job is I need to send a flue for a worcester greenstar 28i junior vertical up past the roof line as there is an extention being built. There will be 2 90degree bends including the bend on top of the boiler and 2 45 degree bends. And the height is about 4 meters. I've worked out that I need to up the size of the flue to 80/125 rather than the standard 100.
As I'm sending 4 meters of white flue up the side of the house I've decided it will look crap. First of all is this do able or have I missed anything and can I get the flue in black so it don't look so ugly. Also can you get 2 meter vertical 80/125 extentions.

Ta

 

[ShaunCorbs]

think you will find worcester will say the white coating is not suitable for outdoor use cant you move the boiler?

also fyi you have posted in the wrong sub forum

 

[Hobo128]

I thought it would be ok for outside. OK
No , can't move the boiler really. Are there flues that are suitable for outside use?

 

[ShaunCorbs]

I thought it would be ok for outside. OK
No , can't move the boiler really. Are there flues that are suitable for outside use?

best to phone worcester up but dont think so am i missing something why does it have to go up 4m externally wheres the extension being built?

 

[Hobo128]

Boilers on the kitchen wall, and it's a wrap around extention. I'll give them a ring tomorrow

 

[ShaunCorbs]

Boilers on the kitchen wall, and it's a wrap around extention. I'll give them a ring tomorrow

full height?

 

[Hobo128]

No. Single story. Just been on worcester Web site and one of the faq is can I run flue outside. The answer is yes. This is good.

 

[ShaunCorbs]

No. Single story. Just been on worcester Web site and one of the faq is can I run flue outside. The answer is yes. This is good.

would phone them up just in-case

 

[Dotty]

Moved off open forum.

 

[samwilko]

Definitely ring them. I'm pretty certain Worcester don't allow their flues to be run externally.

 

[AWheating]

you can have some flue outside to overcome certain situations with worcesters. you need to stop water ingress on the terminal.

its normally the plastic flues that cant take UV light.

 

[Gasmk1]

Vaillant flues can be run outside but you have to silicon the joints against water ingress

 

[Masood]

Vaillant flues can be run outside but you have to silicon the joints against water ingress

It's the same with Worcesters. It's OK outside as long as the joints are siliconed

 

[Hobo128]

Ok
Been on the phone to double check this today. Technical have told me that you can now use worcester flues outside as they have changed the enamel coating on the flue. I do however have to up the size of the flue to 125 as it's a long run. They also do not do the 125mm flues in black which will unfortunately make it look rubbish, it can be boxed in though as long as it has access at each joint as usual.

Thanks for all the input

 

[kozak1968]

Would Hammerite black spray paint be the answer?

 

[Hobo128]

I recall them telling me you can not spray it as it invalidates the layer of protection they put on it.

 

[Gasmk1]

Also can't paint as it could cover up any faults in the flue so would be AR

 

[kozak1968]

But surely you wouldn't paint a flue that was damaged.

Also can't paint as it could cover up any faults in the flue so would be AR

 

[Gasmk1]

you might not but a landlord or home owner might, also i was just sayinhg that if its painted it is classed as that

But surely you wouldn't paint a flue that was damaged.