heat pump /buffer layout

[pebbles]

I will shortly be installing a heat pump and buffer vessel , the heat pump doing uf heating and a secondary heat source to the dhw cylinder solar being the primary , can anyone help me find a lay out diagram for pipe work , pumps , pressure vessel , saftey valves , ect , between heat pump and buffer vessel , and buffer to cylinder and uf manifold, the client has asked me for a lay out drawing but im lost until papperwork for heatpump arrives,