Plastic flue pipe

[shambolic]

You sir sound like a mentalist.

 

[Corgigrouch]

High temperature drain pipe? Do they make drain pipe for hot rain?

 

[JohnHarrison]

High temperature drain pipe? Do they make drain pipe for hot rain?

Fraid so. It seems on here no one knows of such combis that can use MuPVC plastic drain pipe. The only combi I have managed to track down is Keston, who use 50mm MuPVC plastic drain pipe for the flue.

http://www.keston.co.uk/assets/pdf/KE15531 Product Guide V3 Final 18-04.pdf
http://www.keston.co.uk/assets/pdf/C36 Combi Manual WD388-3-2010.pdf

The Keston is not cheap but the C36 delivers a good rate of hot water at the taps, so it maybe you get what you pay for. It is a matter of pricing the whole lot up, the combi and the flue.

Does anyone know of another maker besides Keston? thx

 

[Corgigrouch]

The Keson is perfect for your needs... Although they cost a little more, the extra will pay dividends year after year..

 

[Dan Robinson]

I heartily recommend the C36

 

[simond]

Seconded, thirded. Please invest in one of the finest boilers around.

If the Baxi Avanta was still around that would be good too, preferably linked to a thermal store....

 

[JohnHarrison]

The Keson is perfect for your needs... Although they cost a little more, the extra will pay dividends year after year..

Yes, dividends like breakdown costs.

Seconded, thirded. Please invest in one of the finest boilers around.

If the Baxi Avanta was still around that would be good too, preferably linked to a thermal store....

A combi with a PVC drain pipe plastic flue pipe is the point, no cylinders.

 

[JohnHarrison]

One of the points of using the existing chimney was also to have a condensing combi, as a condensing combi cannot be terminated on a common landing (the landlord will not allow it). As Keston appear the only makers using PVC drain pipe for flues, but the boilers have an appalling reputation, well non one knows of any other maker, then it is ruled out.

Another option is using a Vokera SE non-condensing combi with the flue run through a suspended ceiling to be constructed (or a dedicated duct in the ceiling).

 

[Corgigrouch]

The Keson is perfect for your needs... Although they cost a little more, the extra will pay dividends year after year..

Yes, dividends like breakdown costs.

I can honestly say, hand on heart that I have never needed to repair a Keston... It will be perfect for you.

 

[JohnHarrison]

I heartily recommend the C36

Thank You.

The Keson is perfect for your needs... Although they cost a little more, the extra will pay dividends year after year..

Yes, dividends like breakdown costs.

I can honestly say, hand on heart that I have never needed to repair a Keston... It will be perfect for you.

A quick Google says otherwise. Although, hand on heart, I know one that has been going for 17 years with a problem at all. The spiral tube heat exchanger condensing boiler that does not even have a control board. I think they do not make them any longer - prob' because it was too reliable.

 

[picasso]

Didn't you have exactly the same problem about a year ago, flue over common areas ect ?

 

[JohnHarrison]

Didn't you have exactly the same problem about a year ago, flue over common areas ect ?

Sort of. Sorted it last time with a non-condensing boiler, a Vokera SE. An excellent simple boiler. The SE does not even have a 3-way valve. I recommended the SE. Many on this forum were on about is has to a condensing combi come what may. A local Gassafe man hardly fits condensing boilers in flats, fitting SEs most of the time, because of the nuisance plume. They are easy to exempt in flats, as was proven in that thread. In fact it is difficult to approve a condensing boiler in most flats. But that point has been done to death.

This scenario, not for me but a friend in the same block as me who is doing a total renovation of the flat is to utilise waste space in a chimney breast. The length of flue would be approx 10 meters. A condensing or non-condensing combi does not matter. I know only of the Vokera SE non-condensing boiler, unless others know of another maker. A condensing boiler may as well be fitted as a non-condensing or condensing combi still need a condensate drain - one on the flue for a non-condensing combi. .

The Keston fits the bill of using cheap mPVC waste pipe as the flue. The poor reputation and expensive price of the combi is offputting and the C36 does have a good flowrate. Extension flues are very expensive, for reasons that allude me. An Intergas 30/36 has a good flowrate but used concentric flue all the way. It may nee a few 45 flue elbows which pushes the price up again. It is a matter of an expensive combi with cheap flue or a cheap combi with an expensive flue. The final bottom price line only matters. But using mPVC pipe is easier and quicker of course.

One point of query. A condensing boiler has to run back to the combi. Can a non-condensing flue run downwards, away from the combi? I see no reason why not.

 

[simond]

Come on, someone rise to the bait. He's salivating now.

 

[Dan Robinson]

If he wasn't such an obvious someone might . Too busy avoiding paperwork making virtual Android devices on my office PC.

Much more entertaining.


Dying for a pee though. Drank my way through 9 pints of PG and starting to get the shakes

 

[JohnHarrison]

abuse removed

So, apart from the Keston No one knows any other boiler that can use mPVC flue pipe. And no one knows a non-condensing boiler apart from the Vokea SE.