Objective/Method/Outcome
Objective: Determines if the zone pressure is outside the acceptable range
Method: Compares the recorded zone pressure to the acceptable range of pressure. If the recorded zone pressure was outside the range, for more than the acceptable amount of time, an insight is triggered.
Outcome: Triggers an insight.
Description
Determine the performance index of a pressure control system using the amount of time the pressure is not within the desired setpoint. This rule is part of the CopperTree Standard ruleset.
Default Priority
Low
Diagnosis
- Input sensor(s) faulty or miscalibration. Verify input sensor(s) operation.
- Automatic control has been overridden. Revert equipment back to automatic control.
- Issue with control loop. Review and modify controller tuning parameters.
- Primary air not available. Verify Air Handling Unit operation.
Message
Pressure is severely deviating from setpoint.
Rule Template
Insight Type: Integrity KPI
Trigger Type: Active High
Logic
Inputs
| Input | Unit | Tags | Description |
|---|---|---|---|
| Static Pressure | Discharge Air Static Pressure | The recorded Discharge Air Static Pressure | |
| Static Pressure Setpoint | Discharge Air Static Pressure Setpoint | The ideal or predetermined Discharge Air Static Pressure | |
| Occupancy | Room Occupied | ||
| Threshold – Weekly Hours Outside Range | Hr | The minimum hours of faulty operation to trigger insight | |
| Threshold – Setpoint Deadband | % | The minimum deviation from setpoint to trigger insight |
Notes
This rule is designed for critical zones such as ORs where air pressure is key.
Default Thresholds:
- Weekly Hours Outside Range: 4
- Pressure Setpoint Deadband [%]: 15
