If the owner can show you in the minutes where the Body Corp committee agreed to allowing this I’d cross that bridge. But I’d doubt they could so it surely remains the owner’s issue and cost? Can you imagine the precedent this sets for future issues? If the Strata Manager has paid for an owners recent cost they would now be required to seek reimbursement from that owner for that as well as any other associated repair costs. The Body Corp committee now need to consider, and vote (if in fact they can make this decision/), on retrospectively allowing the owner to have that hot water system on common property (and if so, I imagine the system has to be isolated for fire protection etc at owners cost). If they can not make that decision within their limits they would likely require the current owner to remove the hot water system from common property and restore it to within their own lot. You need more professional advice than just in here. Cheers, C.