I would be grateful for someone to confirm or otherwise my thinking on the required size for an expansion vessel.
I am refurbishing a large old mill. Heating and hotwater will be via heat pump (22kW). I need an expansion vessel for the sealed heating circuit Capacities in litres are: CH Manifold 1 73 CH Manifold 2 82 CH Manifold 3 98 CH Manifold 4 105 Other Pipes 15 Jacket for unvented tank 450
I have drawn on tables from rwc.co.uk and a formula from