iZone Design Considerations
OVERVIEW
Maintaining Airflow in Ducted Air Conditioning Systems
A portion of airflow must always be maintained over the indoor coil in any ducted air conditioning system. This is a critical safety measure designed to protect both the ductwork and the AC unit itself.
If all zone dampers are closed simultaneously, it can lead to excessive pressure in the ductwork. This may cause flexible ducts to split or detach from spigots, and in some cases, result in the indoor coil freezing over.
While modern air conditioning units are equipped with built-in safety features to help prevent coil icing, ensuring continuous airflow remains best practice for system performance and longevity.
There are several design strategies available to maintain adequate airflow. The final decision rests with the system designer, and this manual outlines a range of possible solutions to consider.
Some options to achieve to ensure constant airflow across the indoor coil are detailed below:
Standard Electronic Constant Zone
Dedicated Electronic Constant Zone
Bypass Electronic Constant Zone
HOW iZONE AC SYSTEMS WORK
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iZONE SYSTEMS BE SERIES
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iZONE COMPATIBILTY LIST
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