Potterton Boiler flue

[edition]

Hi,

I Have a fairly old Potterton Suprima 50 boiler that I'm wanting to get the flue changed from going through the wall that it's mounted on to going through existing wall and then up and out of our new extension roof. Basically the flue now finishes inside the new garage extension (garage isn't currently sealed at both ends).

Our builder is saying he thinks that the flue kit is obsolete but I'm unsure if I'm being pushed into a new boiler.

Anybody know wether a suitable kit is still available?

Thanks for any help!