Typically a zone damper would be fitted to the main living area in the home or a common area in an office building
This zone can be used like any other zone but will be automatically overridden open if required by the system to maintain the minimum airflow over the indoor coil
With an iZone system you can select as many zones as you need to be electronic constants and they will activate and deactivate progressively as required
While superior to a Fixed ducted constant zone, it does have a number of short comings
Most of the time the conditions in the standard electronic zone will be satisfactory however when required to operate to relieve pressure, conditions (temperature) in this zone will drift and may become uncomfortable.
Individual room temperature control cannot be fitted to a standard electronic zone. Noise from the outlet may be higher when the electronic constant is operating