SS twin-wall flue with condensing oil boiler

[mikrt]

Hi Forum,

I am about to start the process of removing a wood pellet boiler and replacing it with a Grant Vortex Eco 15-21kW Utility condensing oil boiler.

Flue currently in use is Staovax XQ Stainles twin-wall system, Stovax's manual states "For use with both commercial and domestic high temperature gas, wood, multi-fuel and oil instructions. It is approved to operate with continuous temperatures of up to 450°C" https://www.stovax.com/wp-content/uploads/PM502-XQ-Chimney-System-Issue-6.pdf

Can you please help and confirm whether the current flue can still be used.

Thanks to all in advance

 

[SJB060685]

You'd be best talking to Grant UK, although I suspect they'll say no. Flues need to be sized correctly and to manufacturers guidelines. I personally wouldn't save money by reinstalling a second hand flue.