iCM's main functionalities:

Availability

Determines whether chillers are available or not, based on:

• Inputs from the chiller unit controllers
• Modbus communication status
• Pump status

Sequencing

Optimises the order in which available chillers are turned on and off depending on operating hours, energy efficiency, etc.

Staging

Calculates energy-optimal stage-up/stage-down of the chiller by determining the increased capacity demand by capacity control, compensation of temperature and rotation. This function aims at providing the most energy-efficient combination of chillers on a continuous basis.

Stopping Last Chiller/Recycling

Captures a rise in demand when the last chiller is staged down, by operating the pump dedicated to the next ON chiller at a minimum VFD frequency.

Min/Max Operating Chiller Setting

Ensures that the number of operating chillers always stays within a certain range, regardless of changes in demand.