Is the steam generator a separate installation located outside the cabinet/elsewhere. Would a correctly rated hot and cold pump work in conjunction with a standard boiler/hot water cylinder installation?

The steam generator is located behind one of the corner columns and comes with the unit pre-fitted. A combi boiler is the ideal set p but for anything else you just need to ensure a minimum of 1.5 bar pressure and a flow rate of 14-16 litres per min (hot and cold combined)