Consider the following guidelines when you design a zoning system and layout:
- Group zones with similar load profiles on the same RT.
- Keep perimeter zones separate from interior zones on the same RTU.
- Make sure that each zoned RTU has a minimum of three to four zones.
- Make sure that each zoned RTU supports a maximum of 24 voting zones.
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When all zones are at a minimum airflow, size the bypass dampers for the remaining airflow volume. Use the following equation to size bypass dampers for the correct airflow:
Bypass Airflow (cfm) = Unit Airflow (cfm) – All Zones Minimum Airflow (cfm)