Model RTS-2404 is completely self-contained. The fully automatic closed-loop system reduces water usage, eases maintenance and improves overall primary equipment efficiencies. Closed-tank design eliminates the problems of low or uncertain city water pressure, the possibility of contaminants entering the system, evaporation and overflow. Specifications for the 24-ton unit include 288,000 BTU/hr heat removal at 95°F (35°C) ambient, 45°F (7°C) water-out temperature. It has two 40-gal, 16 gauge, 304 stainless steel closed evaporator tanks with coil inside as well as a 1.5 hp water pump that provides 30 to 40 gal/min or 35 to 45 psi.