Ei3024 are for both heat and CO2. The boiler is in a different room not in the kitchen and there's a CO2 detector there. The oven in the kitchen is induction and oven electric.Why have you not specified Ei3024's?
Legislations need to be clear and fair. For example interlinked wireless alarms with tamper proof 10 year lithium Ion batteries are accepted/allowed by the Scottish governmentand and they say prefered by home owners , it should apply to everyone, it is not the prerogative of the council to pick and chose which legislation to apply to each person.Can't agree with that, legislation is not driven by products its driven by experience and circumstance's arising, product are then produced to fit in with the legislation, not the other way around.
Grade D2 for some, Grade F for others etc. I am not an electrician nor do I u fully understand the legislation. But for a surveyor to insist on hard wired alarms while Grade F is accepted is very unfair to me. As simple as that.