Yes, I don't think I explained myself very well in the opening post (sorry everyone!) but the conservatory is enclosing the existing kitchen window and the new conservatory window pane coming out away from the house adjacent to the flue will be approx. 150-200mm away from the flue. I was worried...
Thanks Simon, I have found the original manual online via the Potterton website and it shows a similar drawing with dimensions. It seems like I only need 25mm (fingers crossed!) gap to an internal/external corner and I am waiting on confirmation from the heating engineer.
Thanks everyone...
I am having a conservatory built and I will have a glazed window (non-opening) near to my boiler's gas flue vent. I'm not sure of exact distance but currently it is 300mm from the centre of the vent to my kitchen window frame. The conservatory will be just outside the window therefore approx...