Where should an auto-purger be piped from on a condenser?

The auto-purger should be piped from the lowest point (outlet drain) of a running condenser because the purpose of the auto-purger is to remove non-condensable gases and any accumulated liquids. In a condenser, these unwanted substances tend to collect at the lowest points due to gravity. By placing the auto-purger at the outlet drain, it effectively utilizes gravity to facilitate the removal, ensuring that the condenser maintains optimal performance and efficiency.

This positioning helps in preventing potential issues like reduced heat transfer efficiency, which can occur if non-condensables remain trapped within the condenser. Additionally, proper removal of these substances helps in maintaining the system’s overall reliability and longevity, reducing the risk of failure or downtime.