No survey done
How do they know that your mains can handle both the combi and the unvented together then?
I'd be getting that confirmed if I were you.
No survey done
you already have an unvented cylinder installed so why are you asking these questions
so the pics are not of your installation then ??? so why post them ?
sorry cant answer you any more, if they are still installing it ask them not on here, are you trying to find a way of not paying for the install
They may be correct - or it could all be a complete mess.they are running a 22mm to the nearest hot water and telling me that’s all I need and will be sufficient
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