The Box Flow Test module can be used to verify and diagnose the operation of VAV Single Duct applications. It provides the timing, output control, and data-gathering functions for testing the flow control performance of a VAV application. It can identify eight different potential errors including Large dP Offset, Flow Not Reliable, Damper Command Not Responding, Poor Flow Response, Insufficient Flow, Excessive Flow, Non-Increasing Flow, and Excessive Hysteresis. The Box Flow Test module supports only Single Duct applications. It does not support exhaust box or hot deck applications.
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