There's 9cm of pipe between the radiator's and the floor upstairs so that's 108cm of pipe and no kite mark, odds that its non barriered stuff?
My advice would be to repipe the system and the cost might be about £300-£500 although others, particularly the Scottish, might have views on this.
I've had a look at the pipes and they are grey in colour with blue a 'v' printed every 2cm or so, found some markings can't make out the first part '------ class S:10CCU]x1.6mm PB, I think that's what is says as the print is facing the wall and im looking at it with a small mirror.
That all sounds a bit extreme!
Did the five year old Viessmann really have to be replaced?
Why did you not just get it repiped as we advised?
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