Objective/Method/Outcome
Objective: Determines if the zone temperature is outside the set temperature for more than the acceptable time
Method: Checks if the zone temperature is outside the set value for more than 1.5 hours and determines an urgency score depending on the level of variation of temperature from the acceptable range and the amount of time it was outside of the range.
Outcome: Creates an insight and assigns an urgency score.
Applicable System
VAV, HP, FCU, UV, UH, RAD, RHT
Description
Setpoint adherence rule: Reading is outside the established comfort range during occupancy. This rule is part of the CopperTree Standard rule-set.
Diagnosis
- Verify sensor location.
- Verify sensor has power.
- Verify reading in BMS.
- Replace if the sensor is broken.
Message
The zone temperature sensor is outside the established comfort range during occupancy. This may negatively impact comfort or energy efficiency.
Rule Template Type
Insight Type: Fault Detection
Trigger Type: Active High
Default Priority
Low
Logic
Inputs
| Input | Unit | Tags | Description |
|---|---|---|---|
| Room Temperature | °C/ °F | Room Temperature | The recorded room temperature |
| Temp Low Limit | °C/ °F | Lower limit of temperature range | |
| Threshold – Comfort Impact_Weekly | % | Upper limit of the impact of this rule on Building Comfort | |
| Temp High Limit | °C/ °F | High limit of temperature range | |
| Threshold – Max Degrees Out of Range | °C/ °F | Maximum temperature out of range that can be used for calculating score | |
| Threshold – Urgency Score Weekly Max | % | Maximum urgency score for rule | |
| Temp Min Limit | °C/ °F | Minimum temperature out of range that is can be used for calculating score | |
| Temp Max Limit | °C/ °F | Maximum temperature that is used for calculating score | |
| Daily Hours Threshold | Hr | The acceptable amount of time daily that the temperature is out of range | |
| Room Temperature Setpoint | °C/ °F | Room Setpoint | Room temperature set point |
| Constant – Temperature Deadband | °C/ °F | The acceptable temperature outside range | |
| Threshold – Weekly Acceptable | °*Hr | Weekly acceptable temperature outside the range | |
| Occupancy | Room Occupied, Discharge Air Fan Command, Discharge Air Fan Status | Building occupancy |
Notes
Default Thresholds:
- Temp Low Limit: 15°C or 55°F
- Temp Min Limit : 0°C or 32°F
- Temp High Limit: 25°C or 77°F
- Temp Max Limit: 40°C or 100°F
- Threshold – Comfort Impact_Weekly [%]: 50%
- Threshold – Max Degrees Out of Range (Urgency Score@100) : 5°C or 5°F
- Threshold – Urgency Score Weekly Max [%]: 20%
- Daily Hours Threshold [Hours]: 1.5 Hours
- Constant – Temperature Deadband : 1°C 1.5°F
- Threshold – Weekly Acceptable °*Hr [°*Hr]: 4°C.Hours or 6°F.Hours
