I am getting a baxi 105e combi installed with a vertical flue through
I have a problem because the guy fitting the end terminal to the roof
has made a bit of an arse of it and has it about 5 feet away from
where I intended it.
This means that there's going to be a lot more ducting required than I
had originally thought, and it looks as though it will exceed the
guidelines in the baxi spec.
In summary the max flue length is 4m with every 90 degree bend
accounting for a metre. I will need 2 bends and at least 3m of ducting
which adds up to about 4m.
Now the roofer is adamant that the terminal can't be fitted where I
want it (I'm on a top floor flat and he says to get it where I intend
will mean getting a scaffold which = £££).
However he is also adamant that he has seen these things fitted with
2-core flexible ducting, which with the lack of 90 degree bends, would
probably be ok and just be slightly over the 4m limit.
So in the baxi literature there is no mention of flexible ducting. Is
this a recognised and reliable way of venting a combi?
And if so will it matter if I'm a bit over the 4m spec - how much
tolerance is built into this spec?
If this is ok then are the flue kits supplied by the boiler
manufacturers a bit of a rip off - presumably this flexible ducting
will cost me a lot less than the various bits and pieces that make up
the baxi kit.
Thanks a lot guys for your advice.