Cooker hood extraction up Rayburn flue

[Jo May]

Hello
Not a qualified electrician (full re-wire being done by certified firm) but a general all-rounder. Renovating a 150-year-old cottage.
I've just removed an old Rayburn and want to vent the fan-assist cooker hood up the flue which is cast iron and looks to go all the way up to the chimney from ground floor through the roof (2 storey house - 4-meter run?). It's approx 150 mm diameter.
I'll install a suitable cowl on the chimney.
Is this possible?
Thanks, Joe

 

[davesparks]

If the flue is redundant now then I see no reason not to make use of it for the cooker hood.

 

[Jo May]

If the flue is redundant now then I see no reason not to make use of it for the cooker hood.

Thanks. It's a round clay pipe, straight run through chimney. Should I put a moisture trap in do you think. Slightly worried about condensation.

 

[The Ghost]

Absolutely needed a condensation trap. If it were me I might think about an inline fan higher up the flue so pulling the air out rather than push it from the bottom. Ask the manufacturer for a solution for such a situation you might get a better answer.

 

[Jo May]

Thanks. Problem about an in-line fan is that the flue is solid from top to bottom, made from what looks like round 6" clay pipe. Breaking in half-way up (through an upstairs chimney breast for example) would be a very hit and miss affair - likely miss. Would you recommend a trap along these lines? CONDENSATION TRAP - 160MM / 150MM / 125MM - http://www.i-sells.co.uk/condensation-trap-160mm-150mm-125mm?ref=similar