Controllers on EEV systems include pressure temperature tables for what purpose?

The purpose of pressure temperature tables in controllers on Electronic Expansion Valve (EEV) systems is to select the correct refrigerant for the application. These tables provide critical information about the relationship between pressure and temperature for specific refrigerants. This data is essential when designing or troubleshooting HVAC systems, as it helps ensure that the right refrigerant is used, optimizing the system's efficiency and performance.

When working with different refrigerants, it is crucial to be aware of their unique characteristics and the pressures at which they operate at specific temperatures. By using pressure temperature tables, technicians can make informed decisions about which refrigerants are suitable for a given system design, leading to effective cooling or heating and overall system reliability.