This is an long running post of days ago but it is the first for me. I did not read through 5 pages of comment so I apologize before hand if it duplicates someone else's comment.
If I understood the OP, correctly, why would you want to even do that? European power supply is 240V at 50Hz. No telling how the heating element perform and if it has any electronics in it, what will happen to them. I'm no engineer but I would think the heating element will run a little hotter that could degrade the heating element because it may be operation out if its design element.
Keep in mind, my comments are based on only the OP
