Marine Air's MCG chilled water series is available in capacities ranging from 24,000 (2 ton) to 72,000 (6 ton) BTU/hr. Featuring a compact base design, MCG modules can be staged to provide a larger system, which is easily retrofitted and serviced in the field. Each condensing unit is monitored and protected with freeze controls, high-limit switches, high and low aquastats, and timers. MCG chillers are monitored and protected by Marine Air's exclusive Digital Diagnostic Controller (DDC), which can be installed remotely. For staged systems, the Chilled Water Master Controller (CWMC) provides central control overeach DDC on each module in the system. up to six modules are supported. The CWMC coordinates all cooling and heating functions, evenly distributes cpmpressor run timies, and operates the seawater and circulated water pumps.