Transition ducts must remain entirely within which area?

Transition ducts are specifically designed to facilitate the movement of air from one space to another within a mechanical system while maintaining proper airflow and efficiency. It is crucial for these ducts to remain within the room of installation because doing so ensures that they perform their intended function without excess losses or pressure differences that could arise if they extended beyond the designated area.

When transition ducts are confined to the room where they are installed, this helps to prevent potential issues such as thermal losses or condensation, which can occur if the ducts are located in an unconditioned space or outside the building. Furthermore, maintaining the ducts within the room can facilitate easier access for maintenance, inspection, and troubleshooting, further ensuring system reliability and performance.

In this context, the room of installation becomes integral to the overall system operation, as it helps in achieving optimal airflow and efficiency, while also staying compliant with building codes that govern the installation of mechanical systems.