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Combi swap with twin flue.

View the thread, titled "Combi swap with twin flue." which is posted in UK Plumbers Forums on UK Plumbers Forums.

MK Heating

Gas Engineer
Just been to price what I thought was a straightforward combi swap. The boiler that is in now however is an Ideal Isar with a twin 60/60 flue. It's a 4th floor flat, the flue is in a ceiling void with adequate inspection hatches. Measured the overall flue length as just under 6m.

A logic has a max flue length of 7m. I could change it to a standard flue without any damage to property I think, the place is a swanky pad, however being 4 floors up I'm struggling to find a way to change the terminal with out a scaffold. Much difference between the Isar terminal and the Logic terminal? I also see Ketson boilers are the same boilers as ideal. Has any one any experience with Ketson?
 
Can you get easy access to the flue?
Cherry picker or boom lift
Most boilers have twin flue options as far as I remember
 
Thanks for your replies guys. Can't say I've seen anew ravenheat for years haha. Had a look and Baxi allow a 10m standard flue so that's well enough for what I need. Going to fit a Duo-Tec and run a standard flue I think.

Thanks again
 

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