What is the recommended slope for suction and discharge lines?

The recommended slope for suction and discharge lines is towards the compressor. This design is crucial for ensuring proper drainage of any condensate that may form within the lines and to facilitate the efficient flow of refrigerant. When the lines are sloped towards the compressor, it helps prevent liquid refrigerant from pooling in the lines, which can cause inefficiencies, potential compressor damage, and reduced system performance.

In a properly designed system, the refrigerant vapor should move smoothly towards the compressor without encountering any hindrances created by trapped liquids. Additionally, maintaining a slope ensures that any refrigerant that condenses in the line can effectively return to the compressor rather than accumulating within the line. This contributes to the longevity of the compressor and overall system efficiency, reducing the risk of operational issues.