> ## Documentation Index > Fetch the complete documentation index at: https://documentation.kodelabs.com/llms.txt > Use this file to discover all available pages before exploring further. # KODE routine library > Reference guide for pre-configured FDD routines covering airside, chilled water, and hot water system faults with tuning parameters. Cloud BMS includes a pre-configured library of FDD routines that cover common fault conditions across airside, chilled water, and hot water systems. These routines are ready to deploy and can be customized through parameter tuning. ## Routine structure Every library routine shares a common structure. Each routine includes a priority level, a fault domain, and a set of tuning parameters with default values. **Priority** assigns a severity level to each routine. The five levels are Life Safety, Critical, Warning, Alert, and Info. **Domain** groups routines by the type of fault they detect. Domains include Cooling Operation Failure, Heating Operation Failure, Air Quality, and AHU Fan / Pressure Issue. **Parameters** control the thresholds and delays that determine when a routine triggers an event. You adjust these values during configuration to match your equipment and site conditions. Common parameters across most routines include: | Parameter | Description | | ---------------------------- | --------------------------------------------------------------------- | | `Alarm On Delay` | Time a condition must persist before the routine generates an event | | `Start Delay` | Wait time after equipment starts before the routine begins monitoring | | `Return to Normal Delay` | Time a condition must clear before the routine closes the event | | Tolerance / threshold values | Deadbands and delta values that define acceptable operating ranges | ## Airside faults Airside routines monitor fan coil units, VAVs, and air handling units for cooling, heating, air quality, and fan or pressure faults. Parameters in each routine are color-coded by category: * Timing Delays that control when the routine generates or closes events * Threshold Equipment-specific thresholds, positions, and delta values * Deadband Setpoint deadbands, tolerances, and arbitrary setpoints ### Air quality Generates an event when CO2 concentration exceeds acceptable levels while the zone is occupied. | Property | Value | | ------------ | ----------- | | **Priority** | Alert | | **Domain** | Air Quality | | Parameter | Default | Description | | ---------------------------------------------------------------------------------------------------------------------- | ------- | ----------------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | CO2 Max Arbitrary Threshold | 800 ppm | Threshold for CO2 breach notifications when no setpoint is configured | | Relative Setpoint Deadband | 10% | Tolerated difference from the setpoint as a percentage for CO2 | | Setpoint Deadband | 50 ppm | Tolerated difference from the setpoint for CO2 (use as a minimum value) | ### Cooling operation failure Generates an event when the unit is commanded to maximum cooling for too long. | Property | Value | | ------------ | ------------------------- | | **Priority** | Alert | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | ------- | ----------------------------------------------------------------- | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Cooling Valve Min Position | 5% | Minimum position to indicate near-full capacity operation | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | | Alarm Delay | 60 min | Delay after alarm conditions are met before generating the event | Generates an event when zone temperature is high and cooling is not active. | Property | Value | | ------------ | ------------------------- | | **Priority** | Alert | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | ----------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Cooling Valve Min Position | 5% | Minimum position to indicate near-full capacity operation | Generates an event when zone temperature is high and cooling is not active. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | ----------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Cooling Valve Min Position | 5% | Minimum position to indicate near-full capacity operation | Generates an event when zone temperature is high and cooling is not active. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | (ZT SPT, ZT) - Delta | 1 delta F | Delta beyond which the operation should be off | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | Generates an event when the damper fails to open when cooling is required. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | ----------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Relative Flow Tolerance | 10% | Tolerated flow deviation from setpoint as a percentage | | Nominal Flow Tolerance | 20 cfm | Tolerated flow deviation from setpoint (use a low number) | | Damper Min Position | 95% | Minimum damper position to indicate a starved box | Generates an event when discharge temperature is too high while in cooling mode and occupied. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | ----------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | | Fan Power Min Threshold | 1 W or kW | Minimum threshold (watts/kilowatts) for a fan on status | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | Generates an event when the damper fails to reach flow setpoint while in cooling mode. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | ----------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Relative Flow Tolerance | 10% | Tolerated flow deviation from setpoint as a percentage | | Nominal Flow Tolerance | 20 cfm | Tolerated flow deviation from setpoint (use a low number) | | Damper Min Position | 95% | Minimum damper position to indicate a starved box | Generates an event when a heating source is detected while in cooling mode. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | (ZT SPT, ZT) - Delta | 1 delta F | Delta beyond which the operation should be off | | Heating Valve Min Position | 10% | Minimum actuator position in heating mode | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | Generates an event when the unit is actively cooling but zone temperature does not drop sufficiently. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | (DAT VAV, ZT) - Delta | 5 delta F | Delta between DAT VAV and zone temperature for sufficient cooling | | (DAT VAV, DAT AHU) - Delta | 3 delta F | Delta between DAT VAV and DAT AHU for sufficient cooling | | Cooling Valve Min Position | 90% | Minimum actuator position to check for insufficiency | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | Generates an event when the unit is actively cooling but discharge temperature does not drop sufficiently. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | (DAT VAV, ZT) - Delta | 5 delta F | Delta between DAT VAV and zone temperature for sufficient cooling | | (DAT VAV, DAT AHU) - Delta | 3 delta F | Delta between DAT VAV and DAT AHU for sufficient cooling | | Cooling Valve Min Position | 90% | Minimum actuator position to check for insufficiency | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | Generates an event when zone temperature is outside the acceptable range while in cooling mode and occupied. | Property | Value | | ------------ | ------------------------- | | **Priority** | Alert | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | ----------- | ---------------------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Arbitrary Heating Setpoint | 66 F | Arbitrary setpoint below which notifications trigger when no setpoint exists | | Arbitrary Cooling Setpoint | 75 F | Arbitrary setpoint above which notifications trigger when no setpoint exists | ### Heating operation failure Generates an event when the damper fails to open when heating is required. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | ----------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Relative Flow Tolerance | 10% | Tolerated flow deviation from setpoint as a percentage | | Nominal Flow Tolerance | 20 cfm | Tolerated flow deviation from setpoint (use a low number) | | Damper Min Position | 95% | Minimum damper position to indicate a starved box | Generates an event when the damper fails to reach flow setpoint while in heating mode. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | ----------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Relative Flow Tolerance | 10% | Tolerated flow deviation from setpoint as a percentage | | Nominal Flow Tolerance | 20 cfm | Tolerated flow deviation from setpoint (use a low number) | | Damper Min Position | 95% | Minimum damper position to indicate a starved box | Generates an event when the unit is outputting maximum heating for too long. | Property | Value | | ------------ | ------------------------- | | **Priority** | Alert | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | ------- | ----------------------------------------------------------------- | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | | Alarm Delay | 60 min | Delay after alarm conditions are met before generating the event | Generates an event when zone temperature is too low and heating is not active. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | ----------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Heating Valve Min Position | 10% | Minimum actuator position in heating mode | Generates an event when discharge temperature is too low and heating is not active. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | ----------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Heating Valve Min Position | 10% | Minimum actuator position in heating mode | Generates an event when the unit is actively heating but zone temperature does not rise sufficiently. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | (DAT VAV, ZT) - Delta | 5 delta F | Delta between DAT VAV and zone temperature for sufficient heating | | Heating Valve Min Position | 90% | Minimum position to indicate near-full capacity operation | | (DAT VAV, DAT AHU) - Delta | 3 delta F | Delta between DAT VAV and DAT AHU for sufficient heating | Generates an event when the unit is actively heating but discharge temperature does not rise sufficiently. | Property | Value | | ------------ | ------------------------- | | **Priority** | Warning | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | (DAT VAV, ZT) - Delta | 5 delta F | Delta between DAT VAV and zone temperature for sufficient heating | | Heating Valve Min Position | 90% | Minimum position to indicate near-full capacity operation | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | Generates an event when zone temperature is outside the acceptable range while in heating mode and occupied. | Property | Value | | ------------ | ------------------------- | | **Priority** | Alert | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | ----------- | ---------------------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Heating Setpoint Deadband | 1.5 delta F | Tolerated difference from the heating setpoint | | Cooling Setpoint Deadband | 1.5 delta F | Tolerated difference from the cooling setpoint | | Single Setpoint Deadband | 3 delta F | Tolerated difference from a single setpoint | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Arbitrary Heating Setpoint | 66 F | Arbitrary setpoint below which notifications trigger when no setpoint exists | | Arbitrary Cooling Setpoint | 75 F | Arbitrary setpoint above which notifications trigger when no setpoint exists | ### AHU fan and pressure issues Generates an event when the damper is at its maximum position for too long. | Property | Value | | ------------ | ------------------------ | | **Priority** | Warning | | **Domain** | AHU Fan / Pressure Issue | | Parameter | Default | Description | | ----------------------------------------------------------------------------------------------------------------- | ------- | ----------------------------------------------------------------- | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Damper Min Position | 95% | Minimum damper position to indicate a starved box | | Alarm Delay | 60 min | Delay after alarm conditions are met before generating the event | Generates an event when discharge airflow is less than setpoint and the damper exceeds its minimum position. | Property | Value | | ------------ | ------------------------ | | **Priority** | Alert | | **Domain** | AHU Fan / Pressure Issue | | Parameter | Default | Description | | ------------------------------------------------------------------------------------------------------------------ | ------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Relative Flow Tolerance | 10% | Tolerated flow deviation from setpoint as a percentage | | Nominal Flow Tolerance | 20 cfm | Tolerated flow deviation from setpoint (use a low number) | | Damper Min Position | 95% | Minimum damper position to indicate a starved box | Generates an event when the discharge fan is not operating as commanded (feedback does not match command). | Property | Value | | ------------ | ------------------------ | | **Priority** | Warning | | **Domain** | AHU Fan / Pressure Issue | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | ------- | ---------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | | Fan Max Threshold | 2% | Maximum threshold (%) for a fan off status | | Fan Current Max Threshold | 0.1 Amp | Maximum threshold (Amps) for a fan off status | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | Generates an event when the fan runs at its upper limit and does not meet the discharge pressure setpoint. | Property | Value | | ------------ | ------------------------ | | **Priority** | Warning | | **Domain** | AHU Fan / Pressure Issue | | Parameter | Default | Description | | ---------------------------------------------------------------------------------------------------------------------- | ------- | ----------------------------------------------------------------- | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Relative Pressure Tolerance | 20% | Tolerated pressure deviation from setpoint as a percentage | | Nominal Pressure Tolerance | 0.1 psi | Tolerated pressure deviation from setpoint (use a low number) | | Fan Min Position | 95% | Minimum fan position (%) when experiencing pressure issues | Generates an event when the fan runs at its lower limit and does not meet the discharge pressure setpoint. | Property | Value | | ------------ | ------------------------ | | **Priority** | Warning | | **Domain** | AHU Fan / Pressure Issue | | Parameter | Default | Description | | ---------------------------------------------------------------------------------------------------------------------- | ------- | ----------------------------------------------------------------- | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Nominal Pressure Tolerance | 0.1 psi | Tolerated pressure deviation from setpoint (use a low number) | | Relative Pressure Tolerance | 20% | Tolerated pressure deviation from setpoint as a percentage | | Fan Min Position | 95% | Minimum fan position (%) when experiencing pressure issues | Generates an event when the unit is not operating as commanded (feedback does not match command). | Property | Value | | ------------ | ------------------------ | | **Priority** | Warning | | **Domain** | AHU Fan / Pressure Issue | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | ------- | ---------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | | Fan Max Threshold | 2% | Maximum threshold (%) for a fan off status | | Fan Current Max Threshold | 0.1 Amp | Maximum threshold (Amps) for a fan off status | Generates an event when discharge airflow is less than setpoint and the damper is at or below minimum position. | Property | Value | | ------------ | ------------------------ | | **Priority** | Alert | | **Domain** | AHU Fan / Pressure Issue | | Parameter | Default | Description | | ------------------------------------------------------------------------------------------------------------------ | ------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Relative Flow Tolerance | 10% | Tolerated flow deviation from setpoint as a percentage | | Nominal Flow Tolerance | 20 cfm | Tolerated flow deviation from setpoint (use a low number) | | Damper Min Position | 95% | Minimum damper position to indicate a starved box | Generates an event when the return fan is not operating as commanded (feedback does not match command). | Property | Value | | ------------ | ------------------------ | | **Priority** | Warning | | **Domain** | AHU Fan / Pressure Issue | | Parameter | Default | Description | | -------------------------------------------------------------------------------------------------------------------- | ------- | ---------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Fan Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a fan on status | | Fan Max Threshold | 2% | Maximum threshold (%) for a fan off status | | Fan Current Max Threshold | 0.1 Amp | Maximum threshold (Amps) for a fan off status | | Fan Min Threshold | 5% | Minimum threshold (%) for a fan on status | ## Chilled water system faults Chilled water routines monitor pumps, differential pressure, and supply temperatures across chilled water and condenser water loops. Generates an event when chilled water pumps cannot meet the differential pressure setpoint. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | ---------------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Diff Press - Delta | 2 delta F | Tolerated delta from the setpoint | | Relative Water Diff Press - Delta | 20% | Tolerated relative (%) delta from the setpoint | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | Generates an event when the chilled water system fails to cool water to its required temperature. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Temp - Delta | 2 delta F | Tolerated delta from the setpoint | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | Generates an event when cooling water pumps cannot meet the loop differential pressure setpoint. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | ---------------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Diff Press - Delta | 2 delta F | Tolerated delta from the setpoint | | Relative Water Diff Press - Delta | 20% | Tolerated relative (%) delta from the setpoint | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | Generates an event when the system fails to cool the water loop to its required temperature. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | ---------------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Diff Press - Delta | 2 delta F | Tolerated delta from the setpoint | | Relative Water Diff Press - Delta | 20% | Tolerated relative (%) delta from the setpoint | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | Generates an event when condenser water pumps cannot meet the differential pressure setpoint. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | ---------------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Diff Press - Delta | 2 delta F | Tolerated delta from the setpoint | | Relative Water Diff Press - Delta | 20% | Tolerated relative (%) delta from the setpoint | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | Generates an event when the system fails to sufficiently cool the condenser water. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Cooling Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Temp - Delta | 2 delta F | Tolerated delta from the setpoint | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | ## Hot water system faults Hot water routines monitor pumps, differential pressure, and supply temperatures across hot water loops. Generates an event when hot water pumps cannot meet the differential pressure setpoint. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | ---------------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Diff Press - Delta | 2 delta F | Tolerated delta from the setpoint | | Relative Water Diff Press - Delta | 20% | Tolerated relative (%) delta from the setpoint | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | Generates an event when hot water loop pumps cannot meet the differential pressure setpoint. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | ---------------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Diff Press - Delta | 2 delta F | Tolerated delta from the setpoint | | Relative Water Diff Press - Delta | 20% | Tolerated relative (%) delta from the setpoint | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | Generates an event when the system fails to heat loop water to its required temperature. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Temp - Delta | 2 delta F | Tolerated delta from the setpoint | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | Generates an event when the hot water system fails to heat water to its required temperature. | Property | Value | | ------------ | ------------------------- | | **Priority** | Critical | | **Domain** | Heating Operation Failure | | Parameter | Default | Description | | --------------------------------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------- | | Start Delay | 30 min | Delay after equipment starts before checking for alarm conditions | | Alarm On Delay | 15 min | Delay after alarm conditions are met before generating the event | | Return to Normal Delay | 5 min | Delay after alarm conditions clear before closing the event | | Water Temp - Delta | 2 delta F | Tolerated delta from the setpoint | | Pump Min Threshold | 5% | Minimum threshold (%) for a pump on status | | Pump Current Min Threshold | 1 Amp | Minimum threshold (Amps) for a pump on status | ## Next steps Configure routines, set thresholds, and assign priorities for your site. Create, test, import, and export FDD routines.