Parallel-flow fan-powered VAV air terminals shall have automatic controls configured to:
- Turn off the terminal fan except when space heating is required or where required for ventilation.
- Turn on the terminal fan as the first stage of heating before the heating coil is activated.
- 3.1. Operate the terminal fan and heating coil without primary air.
- 3.2. Reverse the terminal damper logic and provide heating from the central air handler by primary air.