Samsung MCM-A00N User Manual page 27

Check before use
Efficiency control
DVM CHILLER's water outlet temperature is controlled according to the water outlet
temperature average value of all units which operates by pumps in a module. However,
if you set "Use" for an external water temperature sensor, it controls the water outlet
temperature according to a temperature value from the sensor.
Modules in a group operate in Standard control.
The module with the highest priority starts operating first, and if the module reach
efficient operating condition, a module with the following priority will start operating.
When all modules reach efficient operating condition, they operate at the capacity
between efficient operating condition and the maximum capacity condition.
When all modules reach efficient operating condition and the water outlet temperature
reaches close to the set temperature, the module with the lowest priority controls
descent of compressor operating capacity. Then, when the module with the lowest
priority operates at the minimum capacity and the water temperature reaches close to
the set temperature, the compressors of the module stop.
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