1990 Frigid Coil Air Cooling Evaporator- 23.8 Ton. Model: AIC-3L-4310-3VF-LRB-HGU-IP-PCV. S/N: 30820. S/O: 32116A. Galvanized steel casing. Refrigerant: NH3. Test pressure: 350 psi. Capacity: 23.83 TR @ 12 °F TD & 16 °F (285,600 Btuh). Feed Type: pump Recir NH3 (3:1). Defrost: hot gas. Coil material: Aluminum tube & fin. Coil internal volume: 9.1 cu ft. Airflow: 27,863 @ 0" ESP. Tubes are staggered in the direction of air flow to obtain maximum heat transfer efficiency. Each circuit is custom designed to ensure maximum efficiency and minimum pressure drop. (3) 29 in. dia. Evaporator fans with motors, 1-1/2 hp, 1,145 rpm, 230 V, 5.0 amps, 60 Hz, 3 phase. Inlets: (1) 2-1/2 in. dia. pipe. Outlets: (1) 1 in. dia. pipe, (1) 1-1/2 in. dia. pipe, (1) 2 in. dia. pipe. Overall dimensions: 17 ft. in. L x 52 in. W x 57 in. H. (ACN160)