For systems with direct digital control of individual zones reporting to the central control panel, the static pressure setpoint shall be reset based on the zone requiring the most pressure. In such case, the setpoint is reset lower until one zone damper is nearly wide open. The direct digital controls shall be capable of monitoring zone damper positions or shall have an alternative method of indicating the need for static pressure that is configured to provide all of the following:
- Automatic detection of any zone that excessively drives the reset logic.
- Generation of an alarm to the system operational location.
- Allowance for an operator to readily remove one or more zones from the reset algorithm.