Design heat pump system Help!!!!!!

Hi!!!

First of all hello to everyone i´m new to this forum hoping to have a great experience and learn a lot of this system and refrigeration.;)

I´m having some problems designing a system for heating water especifically for the showers so here in the factory decided to do it with a heat pump but this heat pump has to be made it by us
Why??? because in the near future we are planning to sell thermal plants with this type of technology.
So i have the thermal power that i need to supply to the water and the dimensioning of the evaporator, condenser and the compressor, what i´m missing is all the P&ID like temperatures controls pressure controls and valves for the flux control and safety.
Is there anyone who can help with this??? or a book where i can find this maybe an example

Any help will be great

Thanks in advance :cool: