HVAC controller for a variable air volume (VAV) box

An HVAC system comprising:

• a VAV box including a damper movable between several damper positions, the VAV box configured to provide variable amounts of conditioned air to one or more downstream air vents that service a space based on the damper position;
• an HVAC controller mounted in the space serviced by the VAV box, the HVAC controller including a touch screen user interface configured to accept a temperature set point;
• the HVAC controller is configured to control the VAV box in accordance with the temperature set point;
• and
• wherein the HVAC controller is further configured to accept a selection of a user-initiated balance mode via the touch screen user interface, wherein in the user-initiated balance mode, the HVAC controller is configured to drive the damper of the VAV box to each of two or more damper positions and compare a measured air flow through the VAV box at each of the two or more damper positions to a corresponding desired air flow, and based on the comparison, calibrate one or more calibrated damper positions.

A method of calibrating a VAV box that includes a damper and that is controlled by VAV controller that is mounted in a space of a building that is serviced by the VAV box, the method comprising:

• accessing a calibration menu programmed into the VAV controller;
• sequentially driving the damper of the VAV box to each of a plurality of predetermined damper positions;
• displaying the predetermined damper position on a display of the VAV controller at each of the plurality of predetermined damper positions;
• obtaining an indication of air flow through the VAV box at each of the plurality of predetermined damper positions;
• and
• displaying the indication of air flow through the VAV box on the display of the VAV controller at each of the plurality of predetermined damper positions.