What should the high and low pressures for r407c?

The high pressure for R-407C typically ranges from 180 to 250 psi (pounds per square inch) depending on the specific operating conditions and temperatures. The low pressure generally falls between 20 to 50 psi. It's important to consult the manufacturer's specifications and guidelines, as these values can vary based on the system design and ambient conditions. Always ensure proper safety measures and equipment are in place when working with refrigerants.