| Overview
Advanced AHU Controls with VAV Advanced Hybrid AHU is a system-level profile in the 75F system. The profile includes all the advanced control sequences in AHU as configurable options.
The focus shift has been towards larger, more advanced air handling units, as 75F started addressing the mid-market (buildings 50-250k sq.ft.). To address these larger AHUs, various techniques were introduced depending on what exists on the controller.
On built-up AHUs, we used an integrated panel to control the unit. The built-up AHU is one in which the equipment was often assembled in the field and does not have a factory-mounted unit controller, hence it required custom programming to operate correctly.
Advanced AHU Controls with VAV Advanced Hybrid AHU with configurable advanced control sequences can cut the amount of time required to commission such AHUs to a large extent. The already available IO ports in the CCU is an added advantage. With the CCU itself, we can perform the advanced AHU functions without adding additional hardware, but the profile also is provisioned to add up to 2 connect modules for any extra IO that might be needed for the AHU for control or monitoring purposes.
| How it Works
Similar to other system profiles, the VAV Advanced Hybrid AHU v2 is also influenced by the zone loads, where based on the zone load the system equipment would provide heating or cooling for more information refer to VAV Advanced Hybrid AHU. It also is capable of controlling these advanced devices based on the Supply Air Temperature (SAT), and Duct Static Pressure (DSP).
Supported With Upto:
- 5 Stages of Load-Based Cooling
- 5 Stages of Load-Based Heating
- 5 Stages of Load-Based Fan
- 5 Stages of Supply Air Temperature (SAT)-Based Cooling
- 5 Stages of Supply Air Temperature (SAT)-Based Heating
- 5 Stages of Duct Static Pressure (DSP)-Based Fan
- Humidifier, Dehumidifier, Fan and Occupied enable
- AHU Fresh Air Fan Run Command
| Wiring
For more information on wiring the Connect Module, refer to the following.
Connect Module Overview & Installation
Modbus/BACnet Wiring and General Guidelines
| Setting Connect Module to Advanced AHU mode
The connect module can operate in 3 modes based on the profile and the usage it is being used.
By default, out of the box, the connect module is meant to act in the split mode. To set the connect module for controlling a piece of system or terminal equipment where the connect module is paired as an additional module under Advanced AHU v2 profiles in the CCU. Setting the connect module for the same can be done from the communication screen in the UI, as shown below.
| Configuration
The configuration screen for the VAV Advanced Hybrid AHU v2 is accessed from the System Configuration option, as below.
The configuration screen for the VAV Advanced Hybrid AHU v2 displays, as below.
| Configuration Parameters CM/CCU
| Sensor Bus Address Setting Configuration, based on sensors Used | |||
| Parameter | Purpose | Default Value | Values in the Drop-Down List |
| Address 0 |
When a sensor is used for Temperature, Humidity, Occupancy, CO2 & Pressure sensing |
Not Connected |
For Temperature:
For Humidity:
For Occupancy:
For CO2:
For Pressure:
|
| Address 1 | When a sensor is used for Temperature, Humidity, Occupancy, and CO2 sensing | Not Connected | |
| Address 2 | When a sensor is used for Temperature, Humidity, Occupancy, and CO2 sensing | Not Connected | |
| Address 3 | When a sensor is used for Temperature, Humidity, Occupancy, and CO2 sensing | Not Connected | |
| Analog Input Configuration, based on the Parameter/sensor | |||
| Parameter | Purpose | Default Value | Values in the Drop-Down List |
| Analog Input 1 | When a type of sensing is enabled at the Analog Input port of the CM | Duct Static Pressure 2_2 |
|
| Analog Input 2 | When a type of sensing is enabled at the Analog Input port of the CM |
Return Air CO2
|
|
| Thermistor Input Configuration, based on the Parameter/sensor used | |||
| Parameter | Purpose | Default Value | Values in the Drop-Down List |
| Thermistor 1 | When a type of sensing is enabled at the Analog Input port of the CM | Supply Air Temperature 1 |
|
| Thermistor 2 | When a type of sensing is enabled at the Analog Input port of the CM | Emergency Shut Off NO | |
| Relay Based Outputs | |||
| Parameter | Purpose | Default Value | Values in the Drop-Down List |
| Relay 1 |
To enable staged conditioning control |
SAT Cooling Stage 1 |
|
| Relay 2 |
To enable staged conditioning control |
SAT Cooling Stage 2 | |
| Relay 3 | To enable staged conditioning control | Fan Pressure Stage 1 | |
| Relay 4 | To enable staged conditioning control | SAT Heating Stage 1 | |
| Relay 5 | To enable staged conditioning control | SAT Heating Stage 2 | |
| Relay 6 | To enable staged conditioning control | Fan Pressure Stage 2 | |
| Relay 7 | To enable staged conditioning control | Humidifier Enable | |
| Relay 8 | To enable staged conditioning control | Dehumidifier Enable | |
| Analog Based Outputs | |||
| Parameter | Purpose | Default Value | Values in the Drop-Down List |
| Analog Out 1 |
To enable modulating conditioning control |
Pressure Based Fan Control |
|
| Analog Out 2 | To enable modulating conditioning control | Sat Based Cooling Control | |
| Analog Out 3 | To enable modulating conditioning control | Sat Based Heating Control | |
| Analog Out 4 | To enable modulating conditioning control | CO2 Based Damper Control | |
For analog-based output configuration, additional parameters need to be configured, as below.
For Pressure based Fan Control:
For SAT based Cooling & Heating Control:
For CO2 based Damper Control:
For Load based Cooling, Heating, & Fan Control:
| Adding a Connect Module
A connect module can be added to the profile when required.
- Click the Add Connect Module to add a connect module to the profile to provision additional control & monitoring ports to the profile.
The Connect module configuration screen displays, as below.
| Configuration Parameters Connect Module
| Sensor Bus Address Setting Configuration, based on sensors Used | |||
| Parameter | Purpose | Default Value | Values in the Drop-Down List |
| Address 0 |
When a sensor is used for Temperature, Humidity, Occupancy, CO2 & Pressure sensing |
Not Connected |
For Temperature:
For Humidity:
For Occupancy:
For CO2:
For Pressure:
|
| Address 1 | When a sensor is used for Temperature, Humidity, Occupancy, and CO2 sensing | Not Connected | |
| Address 2 | When a sensor is used for Temperature, Humidity, Occupancy, and CO2 sensing | Not Connected | |
| Address 3 | When a sensor is used for Temperature, Humidity, Occupancy, and CO2 sensing | Not Connected | |
| Relay Based Outputs | |||
| Parameter | Purpose | Default Value | Values in the Drop-Down List |
| Relay 1 |
To enable staged conditioning control |
Load Cooling Stage 3 |
|
| Relay 2 |
To enable staged conditioning control |
Load Heating Stage 3 | |
| Relay 3 | To enable staged conditioning control | Load Fan Stage 3 | |
| Relay 4 | To enable staged conditioning control | Load Cooling Stage 4 | |
| Relay 5 | To enable staged conditioning control | Load Heating Stage 4 | |
| Relay 6 | To enable staged conditioning control | Load Fan Stage 4 | |
| Relay 7 | To enable staged conditioning control | Load Cooling Stage 5 | |
| Relay 8 | To enable staged conditioning control | Load Heating Stage 5 | |
| Analog Based Outputs | |||
| Parameter | Purpose | Default Value | Values in the Drop-Down List |
| Analog Out 1 |
To enable modulating conditioning control |
Load Based Cooling Control |
|
| Analog Out 2 | To enable modulating conditioning control | Load Based Fan Control | |
| Analog Out 3 | To enable modulating conditioning control | Load Based Heating Control | |
| Analog Out 4 | To enable modulating conditioning control | Composite Signal | |
For analog-based output configuration under the connect module, additional parameters need to be configured, as below.
For Load based Cooling, Heating, & Fan Control:
For Composite Signal Control:
For CO2 based Damper Control:
Universal Input Configuration Parameters
|
Thermistor/ Digital Based Universal Inputs |
|||
|
Parameter |
Purpose |
Default Value |
Values in the drop-down list |
|
Universal-in1 |
To enable Digital/Analog/Thermistor based input sensing |
Supply Air Temperature |
|
|
Universal-in2 |
To enable Digital/Analog/Thermistor based input sensing |
Mixed Air Temperature |
|
|
Universal-in3 |
To enable Digital/Analog/Thermistor based input sensing |
Outside Air Temperature |
|
|
Universal-in4 |
To enable Digital/Analog/Thermistor based input sensing |
Duct Static Pressure (0-2") |
|
|
Universal-in5 |
To enable Digital/Analog/Thermistor based input sensing |
Current TX (0-50Amps) |
|
|
Universal-in6 |
To enable Digital/Analog/Thermistor based input sensing |
Condensate Overflow (N/O) |
|
|
Universal-in7 |
To enable Digital/Analog/Thermistor based input sensing |
Filter Status (N/O) |
|
|
Universal-in8 |
To enable Digital/Analog/Thermistor based input sensing |
Generic 1-100KOhm |
|
Configure the required parameters under the CM & Connect Module Configurations
- Click SET to confirm the profile configurations.
Possible Error:
If the sensors are not selected in a sequential order the following warning message displays.
If the same sensor type is configured for two different sensor addresses/ Analog inputs or thermistor inputs. The following error message displays.
If analog outs for the staged controls (relay-based SAT cooling/heating /Static Pressure) are not enabled the following error message displays.
The profile configurations are confirmed and saved successfully message displays.
The configured VAV Advanced Hybrid AHU v2 profile can be visualized on the CCU system screen, as below.
| Algorithm & Operation
Zone Load Based Controls:
The table below talks about the algorithm and operation of the VAV Advanced Hybrid AHU v2 profile, when the load-based controls are configured for in the profile.
| Control | Control Type | Operation |
| Cooling Load Control | Relay Based | The cooling control stages are enabled and ramped up as the systemCoolingLoopOutput changes from 0% to 100% depending on the load conditions. |
| Cooling Load Control | Analog Based |
The cooling control signal modulates between analogOutXAtMinCooling and analogOutXAtMaxCooling as the systemCoolingLoopOutput changes from 0% to 100% depending on the load conditions. |
| Heating Load Control | Relay Based | The Heating control stages are enabled and ramped up as the systemHeatingLoopOutput changes from 0% to 100% depending on the load conditions. |
| Heating Load Control | Analog Based |
The Heating control signal modulates between analogOutXAtMinHeating and analogOutXAtMaxheating as the systemHeatingLoopOutput changes from 0% to 100% depending on the load conditions. |
| Load Fan Control | Relay Based | The Fan control stages are enabled and ramped up as the system Cooling/Heating Loop Output changes from 0% to 100% depending on the load conditions. |
| Load Fan Control | Analog Based |
The Fan control signal modulates between analogOutXAtMinFan and analogOutXAtMaxFan as the system Cooling/Heating Loop Output changes from 0% to 100% depending on the load conditions. |
Supply Air Temperature (SAT) Based Controls:
The table below describes the algorithm and operation of the VAV Advanced Hybrid AHU v2 profile when the Supply Air Temperature controls are configured for in the profile.
| Control | Control Type | Operation |
| SAT Cooling Control | Relay Based |
|
| SAT Cooling Control | Analog Based |
|
| SAT Heating Control | Relay Based |
|
| SAT Heating Control | Analog Based |
|
Duct Static Pressure (DSP) Based Controls:
The table below describes the algorithm and operation of the VAV Advanced Hybrid AHU v2 profile when the duct static-based fan controls are configured for in it.
Cooling Side:
| Control | Control Type | Operation |
| Pressure Fan Control | Relay Based |
|
| Pressure Fan Control | Analog Based |
|
Heating Side:
| Control | Control Type | Operation |
| Pressure Fan Control | Relay Based |
|
| Pressure Fan Control | Analog Based |
|
Composite Controls:
| Control | Control Type | Operation | ||||||
| Composite Control | Relay Based |
Example:
|
Fan Enable:
Whenever heating or cooling conditioning is in action the Fan enabled relay is turned on.
During unoccupied hours relay will turn on only if there is a call for cooling/heating - this includes economizing action)
Occupied Enable:
This relay will be on whenever the building is scheduled for occupancy or systemStaticPressureLoopOutput > 0.
During unoccupied hours relay will turn on only if there is a call for cooling/heating - this includes economizing action)
Humidifier:
The humidifier is turned on whenever the humidity level for the system drops below the targetMinInsideHumidty set on the systems page.
The humidifier will be turned off after being turned on when the humidity goes humidityHysteresis above the targetMinInsideHumidty.
Humidity control will not be maintained during UNOCCUPIED or VACATION modes. Even during pre-conditioning, emergency conditioning, and auto-forced occupied, the humidifier is not operational.
| Post Configuration
The zone paired with the VAV Advanced Hybrid AHU is displayed in the CCU as below:
You can see widgets configured in the heatmap pages in the portals as below:
| Equip Graphics
Equipment graphics is available for all the system profiles. It provides a graphical representation of system-level equipment and enables monitoring of key point parameters associated with terminal profiles.
The highlighted list of points is predefined for visualization alongside the graphic for the respective profile.
| Control System Object List
| Object Name | Type | Input/Output Type/ Default Value |
| Current Temp | Input (Terminal Side) | Average Current Temperature of Zones |
| Humidity | Input (Terminal Side) | Average Humidity of Zones |
| Zone Base Priority | User Intent (Terminal Side) | NA |
| coolingSATMinimum (SATspMin) | Tuner | 55 F |
| coolingSATMaximum (SATspMin) | Tuner | 65 F |
| coolingPreconditioningRate | Tuner | 15 mins |
| heatingPreconditioningRate | Tuner | 15 mins |
| zonePriorityMultiplier | Tuner | 1.30 |
| zonePrioritySpread | Tuner | 2 |
| Cooling Desired Temperature | User Intent (Terminal side) | NA |
| Heating Desired Temperature | User Intent (Terminal side) | NA |
| Conditioning Mode | User Intent | NA |
| Operation Mode | Calculated Input | NA |
| Fan Mode | User Intent | NA |
| Occupancy Mode |
Input |
Schedule / Terminal OWI Sensors |
| SAT Cooling Stage 1 | Output | Control Mote Relay |
| SAT Cooling Stage 2 | Output | Control Mote Relay |
| SAT Cooling Stage 3 | Output | Control Mote Relay |
| SAT Cooling Stage 4 | Output | Control Mote Relay |
| SAT Cooling Stage 5 | Output | Control Mote Relay |
| SAT Heating Stage 1 | Output | Control Mote Relay |
| SAT Heating Stage 2 | Output | Control Mote Relay |
| SAT Heating Stage 3 | Output | Control Mote Relay |
| SAT Heating Stage 4 | Output | Control Mote Relay |
| SAT Heating Stage 5 | Output | Control Mote Relay |
| Fan Pressure Stage 1 | Output | Control Mote Relay |
| Fan Pressure Stage 2 | Output | Control Mote Relay |
| Fan Pressure Stage 3 | Output | Control Mote Relay |
| Fan Pressure Stage 4 | Output | Control Mote Relay |
| Fan Pressure Stage 5 | Output | Control Mote Relay |
| Humidifier Enable | Output | Control Mote Relay |
| Dehumidifier Enable | Output | Control Mote Relay |
| Occupied Enable | Output | Control Mote Relay |
| Fan Enabled | Output | Control Mote Relay |
| AHU Fresh Air Run Command | Output | Control Mote Relay |
| Pressure Based Modulating Fan Control | Output | Control Mote AnalogOut |
| SAT Based Modulating Cooling Control | Output | Control Mote AnalogOut |
| SAT-Based Modulating Heating Control | Output | Control Mote AnalogOut |
| Load Based Modulating Cooling Control | Output | Control Mote AnalogOut |
| Load Based Modulating Heating Control | Output | Control Mote AnalogOut |
| Load Based Modulating Fan Control | Output | Control Mote AnalogOut |
| CO2-Based Modulating Damper Control | Output | Control Mote AnalogOut |
| Composite Signal | Output | Control Mote AnalogOut |
|
Return Air Temperature |
Input | Control Mote Sensor Bus |
|
Mixed Air Temperature |
Input | Control Mote Sensor Bus |
|
Supply Air Temperature 1 |
Input | Control Mote Sensor Bus |
|
Supply Air Temperature 2 |
Input | Control Mote Sensor Bus |
|
Supply Air Temperature 3 |
Input | Control Mote Sensor Bus |
|
Occupany Sensing |
Input | Control Mote Sensor Bus |
|
Return Air CO2 |
Input | Control Mote Sensor Bus |
|
Mixed Air CO2 |
Input | Control Mote Sensor Bus |
|
Duct Static Pressure Sensing |
Input | Control Mote Sensor Bus |
|
Additional Sensing Capabilities |
Input | Control Mote Analog In1 |
|
Additional Sensing Capabilities |
Input | Control Mote Analog In2 |
|
Additional Sensing Capabilities |
Input | Control Mote Thermistor In1 |
|
Additional Sensing Capabilities |
Input | Control Mote Thermistor In2 |
Note: For a comprehensive list of tuners and their details refer to Tuners Complete List
| Sequence of Operation
The sequence of operation is completely driven based on Occupancy mode, and Zone Loads (Cooling/Heating).
Let us understand the Sequence of operations based on the occupancy modes, and how the other factors contribute to the sequence of operations during different types of occupancy modes.
| Occupancy Modes
The occupancy mode (Occupied or Unoccupied) shall be determined through a user-adjustable, graphical, seven-day schedule with a holiday schedule.
Based on the above aspects factoring into the occupancy the following can be the possible applicable occupancy modes:
- Pre- Conditioning
- Occupied
- Unoccupied
| Sequence of Operation During Pre-Conditioning
Pre-conditioning is a state just before the building enters the scheduled occupancy. It starts at more like the unoccupied state, the desired temperatures drift to unoccupied setbacks.
The preconditioning uses an algorithm to start the conditioning before the building is scheduled for occupancy, from the heating side or cooling side, to bring the building to an optimum level ( within the occupied heating & cooling desired temperatures) exactly at the time of occupancy start.
A coolingPreconditioningRate and heatingPreconditiningRate tuners defaulted to 15 minutes, are used alongside the occupied heating/cooling desired temperature breach to determine when the pre-conditioning should start.
Example Calculation:
When,
-
- The heating & cooling desired temperatures (Average of zones needing conditioning) are 70F and 74F for the building.
- The operating mode is determined based on the weighted average calculation as shown in section | Sequence of Operation During Occupied
Let us assume:
-
-
- The operating mode determined is cooling.
- The current temperature (Average of zones needing cooling conditioning) is 76F
- 8:00 AM is the time the building is scheduled to be occupied.
-
Then the preconditioning start time is calculated as follows:
Cooling Desired Temperature Breach= 76-74=2F
Preconditioning duration= coolingPreconditioningRate (mins) * Cooling Desired Temperature Breach
= 15*2
= 30 mins
The preconditioning starts 30 minutes before the building is scheduled to be occupied, which is = 7:30 AM.
The zones operate the damper positions optimally to receive the required conditioning to satisfy their load requirements to maintain a temperature within the deadband.
For more information on the damper operations, refer to VAV Terminal Profile- Damper Position Calculation & Operation.
| Sequence of Operation During Occupied
During the scheduled Occupied times, the AHU/RTU is influenced by two aspects of the system.
- The Operating Mode
- The Conditioning Mode
Conditioning Modes
The Operating mode is a user intent parameter that the user can specify. There are four types of operating modes.
- Off
- Auto
- Cooling
- Heating
Operating Modes
The Conditioning mode is a derived parameter. There are three types of conditioning modes.
- Cooling
- Heating
- Off
Based on the influence of the aspects mentioned above, the device supplies the cooling/ heating load requirements, and the zones operate the damper positions optimally to receive the required conditioning to satisfy their load requirements and maintain a temperature within the deadband.
For more information on the damper operations, refer to VAV Terminal Profile- Damper Position Calculation & Operation.
Weighted Average Load MA (Heating /Cooling)
weightedAverageHeatingOnlyLoadMA/ weightedAverageCoolingOnlyLoadMA, is a result of the following steps.
| Step | Formula/Calculation |
| Heating Load/Cooling Load |
When the zone's current temperatures fall below the HeatingDesiredTemperatures they contribute to the zone heating load
|
| Dynamic Priority (Heating/Cooling) |
Note: The exponent (zoneHeatingLoad/zonePrioritySpread) or (zoneCoolingLoad/zonePrioritySpread) will be limited to the max value of 10. This will prevent a zone with large temperature drift (probably because of faulty sensors) from driving system operation. |
| Weighted Average (Heating/Cooling) |
|
| Weighted Average Post ML (Machine Learning) (Heating/Cooling |
|
|
Weighted Average MA (Moving Average) (Heating/Cooling) |
|
Operating Mode Determination
Conditioning mode is determined using the following table:
| If | Then | ||||||||||||||||
| weightedAverageCoolingOnlyLoadMA is zero and weightedAverageHeatingOnlyLoadMA is positive. |
Heating Load Control
Fan Load Control:
SAT Heating Control:
Pressure Fan Control:
|
||||||||||||||||
|
weightedAverageHeatingOnlyLoadMA is zero. weightedAverageCoolingOnlyLoadMA is positive. |
Cooling Load Control
Fan Load Control:
SAT Cooling Control:
Pressure Fan Control:
|
||||||||||||||||
|
weightedAverageHeatingOnlyLoadMA is zero. weightedAverageCoolingOnlyLoadMA is zero.
|
The system is within the deadband, there is neither a cooling load nor a heating load, hence there is no conditioning that occurs at the AHU end, except for a minimum mechanical or free ventilation. |
Composite Controls:
The table below describes how the composite signal in the sequence would work:
| Control | Control Type | Operation | ||||||
| Composite Control | Relay Based |
Example:
|
| Sequence of Operation During UnOccupied
- The range of Heating Desired Temperature and Cooling Desired Temperature of the zones drifts further away to unoccupied setback.
- The device supplies for the cooling/Heating load requirements of the zones, and the zones operate the damper positions optimally to receive the required conditioning to satisfy their load requirements to maintain the room temperature within the newly set autoaway setback temperature range, for more information on the damper operations refer to VAV Terminal Profile- Damper Position Calculation & Operation.
- If weightedAverageHeatingOnlyLoadMA/ weightedAverageCoolingOnlyLoadMA, is a positive value. The system operates in the determined conditioning mode to supply the zone cooling/heating load requirements, as shown in the | Sequence of Operation During Occupied
- If weightedAverageHeatingOnlyLoadMA & weightedAverageCoolingOnlyLoadMA, is zero. The system is within the deadband, there is neither a cooling load nor a heating load, hence there is no conditioning that occurs at the AHU end, except for a minimum mechanical or free ventilation.
| Sequence of Operation During Emergency Conditioning
When zone limits are violated, and the recorded temperature is within the zone limit plus leeway the conditioning will happen in the direction of zone load, as shown in the cooling conditioning, or Heating conditioning mode.
| Sequence of Operation During Zone Temp Dead
And, When the zone temperature breaches the zone limits, beyond the leeway limits all the following loops are disabled:
-
- CoolingLoopOutput
- HeatingLoopOutput
- FanLoopOutput
- SATCoolingLoopOutput
- SAHeatingLoopOutput
- StaticPressure LoopOutput
| Humidifier Control
The humidifier is turned ON whenever the humidity level for the system drops below the targetMinInsideHumidty set. The humidifier will be turned OFF after being turned on when the humidity levels go humidityHysteresis above the targetMinInsideHumidty. Humidity control will not be maintained during UNOCCUPIED or VACATION modes.
| DeHumidifier Control
If the dehumidifier is selected, it turns ON whenever the humidity level for the system goes above the targetMaxInsideHumidty set. The dehumidifier will be turned OFF after being turned on when the humidity drops humidityHysteresis below the targetMaxInsideHumidty. Dehumidifier control will not be maintained during UNOCCUPIED or VACATION modes.
Note: The humidity level for the system is either the average level reported by all the zones serviced by the RTU/AHU.
| Operation Mode Summary
|
Modes & Operation |
Pre-Conditioning | Occupied | Unoccupied |
| Auto |
CoolingLoopOutput HeatingLoopOutput FanLoopOutput SATCoolingLoopOutput SATHeatingLoopOutput StaticPressure LoopOutput |
CoolingLoopOutput HeatingLoopOutput FanLoopOutput SATCoolingLoopOutput SATHeatingLoopOutput StaticPressure LoopOutput
|
CoolingLoopOutput HeatingLoopOutput FanLoopOutput SATCoolingLoopOutput SATHeatingLoopOutput StaticPressure LoopOutput |
| Heat Only |
HeatingLoopOutput FanLoopOutput SATHeatingLoopOutput StaticPressure LoopOutput |
HeatingLoopOutput FanLoopOutput SATHeatingLoopOutput StaticPressure LoopOutput
|
HeatingLoopOutput FanLoopOutput SATHeatingLoopOutput StaticPressure LoopOutput |
| Cool Only |
CoolingLoopOutput FanLoopOutput SATCoolingLoopOutput StaticPressure LoopOutput |
CoolingLoopOutput FanLoopOutput SATCoolingLoopOutput StaticPressure LoopOutput
|
CoolingLoopOutput FanLoopOutput SATCoolingLoopOutput StaticPressure LoopOutput |
| Off |
All Loops Deactivated |
||
| Feature Availability Versions
| Feature | Hardware/Firmware | Version |
|
The VAV Advanced Hybrid AHU V2 system support |
CM | 3.53 and above. |
|
The VAV Advanced Hybrid AHU V2 system support |
Connect Module | 1.4 and above |
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