FY26 HVAC B469 Cooling Tower Salient Characteristics.pdf

This document is a Salient Characteristics specification for a federal cooling tower procurement issued by the Department of the Air Force, Headquarters 628th Air Base Wing (AMC) at Joint Base Charleston, South Carolina, dated 11 December 2025.

The requirement is for an open circuit induced-draft vertical discharge cooling tower, specified as EVAPCO MODEL AT 29-4K21 or equivalent, to be delivered for Government installation. The cooling tower must meet specific design and operational parameters: design conditions of 95°F dry bulb / 80.7°F wet bulb, water inlet/outlet temperatures of 95°F / 85°F, and water flow capacity of 1,418.1 gpm. The equipment must feature 316 stainless steel construction for both the cold water basin and upper components, a 5-probe electronic water level control package, stainless steel basin heaters with contactor and transformer rated to 0°F, fan vibration switch, sump sweeper piping with high flow eductors, fan motor shaft grounding rings, and VFD service-rated fan motors (Variable Frequency Drives not included). The maximum footprint dimension is 9' x 23'. The contractor must include a 5-year Parts/Labor Warranty and provide factory start-up and commissioning services through a manufacturer representative.