Chiller Replacement and Controls Upgrade

The replacement of the existing air-cooled chiller and upgrading the controls system. The recommended basis of design is a Trane Ascend ACS215 (approx. 215-ton) air-cooled scroll chiller, replacing the existing 270-ton RTAA unit. The existing machine has a history of low-load trips (low suction pressure); per operating history, one circuit was down (≈60% capacity) for the 2025 cooling season with no loss of comfort.