Core bit and controls!

[novicegas]

Hi Guys,

Doing my first install soon and have just realised I don't have a core bit, using standard 100mm vaillant flue, do I need the 107mm or the 117mm core but?

Also was going to fit the 470 wireless weather comp, will it work that much better than the 392f, also is the 392f easy to install.

Many thanks chaps

[mfgs]

117mm core bit will be better as it will give you a bit more play if the hole isnt spot on. I have no idea on the controls as I havent fitted either before.

[novicegas]

Thought the 117 sounded better, many thanks