1�2 AC control principle sketch
Following components could be controlled by the FCU: water pump (cassette type), water valve, fan, swing
fan (cassette, horizontal exposed, vertical exposed), auxiliary electric heater and water overflow protection
signal. The communication data between mainboard and display board is 485, the display board could be
controlled by wireless remote controller.
Note: concealed ceiling FCU is excluded in above information.
1�3 Unit operation control