Samsung BACnet MIM-B17N User Manual page 6

Terms
DMS2: The abbreviation of Data Management Server2.
Upper Controller: S-NET 3, RMS and DMS2 which allows controlling by accessing to a
web page.
OnOff Controller: A device that controls 16 groups of the DVM air conditioner.
A central control device of a DVM system which is located between a
DMS2 and an outdoor unit.
AHU(Air Handling Unit): Executes heat exchange between air and cooling unit using
central air conditioning duct method.
ERV(Energy Recovery Ventilator): Ventilating system using heat recovery function.
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