If you're looking for a specific "full piece" or additional resources, such as user manuals, tutorials, or case studies, you can find them on the EPA website or other water modeling resources.

Once you've downloaded the software, follow the installation instructions. EPANET 2.0 is a user-friendly application with a comprehensive user manual and tutorials.

I couldn't find specific information on "EPANET Z 0 5" version. However, I assume you might be looking for EPANET 2.0 or a similar version.