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5
Control Functions
This section describes the main control functions available in Daikin Air Handling Units. A typical activation sequence of
the devices installed in Daikin AHU for thermoregulation control is showed below.
The starting sequence is performed according to an energy saving management logic, in order to satisfy the desired
temperature setpoint.
As soon as a device is fully operational (i.e. operates at 100%), the next device starts according to the sequence shown in
the figure above. The same sequence describes also the devices turn-off order by following the opposite direction, ensuring
that the upper devices are directly controlled only when the lowest ones are not working. This ensure that the temperature
setpoint is always satisfied with the lowest energy consumption.
The activation sequence strictly depends on the devices actually installed in your AHU, so it may changes
accordingly.
Mixing Damper
Supply/Return
Fan Start
Fresh/Exhaust
Air Damper Opening
Heat Recovery Device
ERQ
+
Heating Water
Coil
ERQ
Heating
Water Coil
Electric Coil
Cooling
Water Coil
ERQ
Heating
Cooling
