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Hmm, minimum disruption would be the new keston, being basically an ideal logic plus is far better.

do you have any more photos of the twin pipe flue before the ceiling was put up?

As requested. Different angle on the rise from the boiler and then a shot of it exiting the property. It goes over a supporting beam (which was visible in the first pic of the earlier post)
Twin Flue 2.jpg
Twin Flue Exit.jpg
 
Have you had rewiring done? Has engineer checked for cross polarity?
I'm not sure what you mean by having 'rewiring done'? I (or the tenants) certainly didn't change anything that I'm aware of before the boiler died. The boiler was last serviced about 6 months ago and had worked fairly happily since. It went into 'overheat shutdown' while running which appeared to be due to the pump dying and not moving the heated water out.

As I posted earlier, the engineer tried a new pump (the old one had died) and a new PCB, but as I said earlier the pump wouldn't start up.

Not sure if he checked for cross polarity. I did see him checking something with a meter probe but would have to ask to be sure. Is this something that happens by itself or a mistake that would be made when something that was changed?
 
Thanks to all that replied. I've bitten the bullet and gone for a like-for-like replacement. From a local engineer - fitting it tomorrow, which I'm pretty impressed with.

In answer to my original question though (in case anyone is Googling this in the future), it seems that the Ideal Logic and the Keston 30/35 are the same boiler, but the Keston does dual flue with a 2 year warranty (vs 5 for the Ideal Logic) while costing about 25% more.

Seems Keston/Ideal have found a profitable niche there in the 'long flue' market and intend to make hay until someone competes. Can't blame 'em.
 
Thanks to all that replied. I've bitten the bullet and gone for a like-for-like replacement. From a local engineer - fitting it tomorrow, which I'm pretty impressed with.

In answer to my original question though (in case anyone is Googling this in the future), it seems that the Ideal Logic and the Keston 30/35 are the same boiler, but the Keston does dual flue with a 2 year warranty (vs 5 for the Ideal Logic) while costing about 25% more.

Seems Keston/Ideal have found a profitable niche there in the 'long flue' market and intend to make hay until someone competes. Can't blame 'em.

The only reason ideal got them.....
 
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Does the keston use standard 1 1/2 solvent waste for flue?

Can get upto 15m from 80mm twin flue on a baxi platinum, which has 10 year warranty
 
Just an update in case it's of use to anyone. The engineer is in the process of replacing the existing C36 with a new Keston 35 Combi has discovered something that seems a bit odd.

The position of the flues are reversed between the models, so the exhaust flue outlet on the C36 is in the position where the air intake is located on the Combi 35 and vice versa.

Seems a bit of an odd thing and makes a 'like-for-like' swap a bit more fiddly.
 

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