VAV BOX SCENARIOS

VAV BOX(Variable Air Volume)

Click on a term to get its definition

Damper

Reheater

Inlet

Outlet

Actuator

Controller

Lets Go!

VAV BOX(Variable Air Volume)

Click on a term to get its definition

Damper

Reheater

Inlet

Outlet

Actuator

Controller

Continue

Hear what a normal box sounds like

VAV Box

Reheater pipe

Inlet

Outlet

Continue

Back

Continue

Click each number to get more information about this control graphic!

Carbon dioxide sensor gives the CO2 reading for the room

This is the measured room temperature

Temperature reading needs to be between these two setpoints

Back

This graph shows the different temperature values in the last 24 hours. Zone Temp: the actual temperature in the room CoSp: temperature setpoint above which space will be cooled HeSp: temperature setpoint below which space will be heated SA Temp: shows how the system is adjusting the delivered air temperature to meet those setpoints

Before we move on, lets look into this portion of the graph, click inside the circle to learn more

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This graph shows the different temperature values in the last 24 hours. Zone Temp: the actual temperature in the room CoSp: temperature setpoint above which space will be cooled HeSp: temperature setpoint below which space will be heated SA Temp: shows how the system is adjusting the delivered air temperature to meet those setpoints

For help with that question, click inside this circle

This graph shows the different temperature values in the last 24 hours. Zone Temp: the actual temperature in the room CoSp: temperature setpoint above which space will be cooled HeSp: temperature setpoint below which space will be heated SA Temp: shows how the system is adjusting the delivered air temperature to meet those setpoints

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Hover over each number value to get its definition

Continue

Hover over each number value to get its definition

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Tools!

Hover over each to learn what they do!

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VAV BOX(Variable Air Volume)

Click on a term to get its definition

Damper

Reheater

Inlet

Outlet

Actuator

Controller

Continue

VAV BOX(Variable Air Volume)

Click on a term to get its definition

Damper

Reheater

Inlet

Outlet

Actuator

Controller

Continue

Back

Back

Back

Back

Continue

Back

Control System Page

INFO

Room 1

Room 2

Room 3

Room 4

Room 5

Room 6

Room 7

Room 8

Room 1: Employees are complaining that the room they are in feels a little chilly

Click on each button to try and diagnose the system!

95.3

490 490 100

Inspect physical VAV Box

Change setpoints: force cooling mode

Switch zone to unoccupied

Change setpoints: force heating mode

Increase airflow setpoint

Continue

Hear what the box sounds like

Click on a part of the box to take a measurement

INFO

Back

Back

Continue

Back

Control System Page

INFO

Room 1

Room 2

Room 3

Room 4

Room 5

Room 6

Room 7

Room 8

Room 4: Employees are complaining that the room they are in feels a little warm.

Click on each button to try and diagnose the system!

396 490 100

Inspect physical VAV Box

Change setpoints: force cooling mode

Switch zone to unoccupied

Change setpoints: force heating mode

Increase airflow setpoint

Continue

Hear what the box sounds like

Click on a part of the box to take a measurement

INFO

Back

Back

Continue

Back

Control System Page

INFO

Room 1

Room 2

Room 3

Room 4

Room 5

Room 6

Room 7

Room 8

Room 5: An employee is complaining about the air coming from the vents being too hot.

Click on each button to try and diagnose the system!

490 490 100

Inspect physical VAV Box

Change setpoints: force cooling mode

Switch zone to unoccupied

Change setpoints: force heating mode

Increase airflow setpoint

Continue

Hear what the box sounds like

Click on a part of the box to take a measurement

INFO

Back

Back

Continue

Back

Control System Page

INFO

Room 1

Room 2

Room 3

Room 4

Room 5

Room 6

Room 7

Room 8

Room 6: The weekly report in the zones reported this zone as suspect because its outside its desired setpoint for more hours than the other zones.

Click on each button to try and diagnose the system!

490 490 100

Inspect physical VAV Box

Change setpoints: force cooling mode

Switch zone to unoccupied

Change setpoints: force heating mode

Increase airflow setpoint

Continue

Hear what the box sounds like

Click on a part of the box to take a measurement

INFO

Back

Back

Continue

Back

Control System Page

INFO

Room 1

Room 2

Room 3

Room 4

Room 5

Room 6

Room 7

Room 8

Room 8: After looking at energy usage in the past month, you notice that this room has a unusually high energy usage rate

HINT

Click on each button to try and diagnose the system!

490 490 100

Inspect physical VAV Box

Change setpoints: force cooling mode

Switch zone to unoccupied

Change setpoints: force heating mode

Increase airflow setpoint

Continue

Hear what the box sounds like

Click on a part of the box to take a measurement

INFO

Back

Back

Continue

Back

Control System Page

INFO

Room 1

Room 2

Room 3

Room 4

ALL ROOMS SUCCESSFULLY DIAGNOSED!

Room 5

Room 6

Room 7

Room 8

Select the proper tool to use here

expected value: 390 cfm measured value: 393 cfm

Select the proper tool to use here

expected value: 60.0 F measured value: 60.4 F

Now that you've been introduced to VAV boxes, Let's start with the diagnosing scenarios!

• These exercises are self paced, so no need to feel stressed
• The red rooms indicate rooms with issues, while the green indicate rooms that are working properly.
• Diagnose and solve all the red room scenarios in numerical order, starting with Room 1
• Once you have completed all the scenarios, you can come back and retry previous ones

Select the proper tool to use here

expected value: 60.0 F measured value: 56.3 F

Select the proper tool to use here

expected value: 60.0 F measured value: 60.4 F

Notice how around 9 PM, the systems heating and cooling setpoints change and stay at this different value until around 6 AM?

Learn why!

This behavior is due to scheduling through a setback strategy. A setback is a control method in which technicians adjust system setpoints during unoccupied periods to facilitate running less. In this case, the cooling and heating setpoints are shifted farther apart during these hours, reducing the likelihood that either heating or cooling operation is required.

Back

Select the proper tool to use here

expected value: 60.0 F measured value: 60.4 F

Select the proper tool to use here

expected value: 140.1 F measured value: 140.1 F

Select the proper tool to use here

expected value: 140.1 F measured value: 140.1 F

Now that you've been introduced to VAV boxes, Let's start with the diagnosing scenarios!

• These exercises are self paced, so no need to feel stressed
• The red rooms indicate rooms with issues, while the green indicate rooms that are working properly.
• Diagnose and solve all the red room scenarios in numerical order, starting with Room 1
• Once you have completed all the scenarios, you can come back and retry previous ones

Now that you've been introduced to VAV boxes, Let's start with the diagnosing scenarios!

• These exercises are self paced, so no need to feel stressed
• The red rooms indicate rooms with issues, while the green indicate rooms that are working properly.
• Diagnose and solve all the red room scenarios in numerical order, starting with Room 1
• Once you have completed all the scenarios, you can come back and retry previous ones

Select the proper tool to use here

expected value: 300 cfm measured value: 300 cfm

Select the proper tool to use here

expected value: 100.2 F measured value: 100.2 F

Select the proper tool to use here

expected value: 60.0 F measured value: 60.2 F

Select the proper tool to use here

expected value: 390 cfm measured value: 393 cfm

Select the proper tool to use here

expected value: 390 cfm measured value: 393 cfm

Now that you've been introduced to VAV boxes, Let's start with the diagnosing scenarios!

• These exercises are self paced, so no need to feel stressed
• The red rooms indicate rooms with issues, while the green indicate rooms that are working properly.
• Diagnose and solve all the red room scenarios in numerical order, starting with Room 1
• Once you have completed all the scenarios, you can come back and retry previous ones

Select the proper tool to use here

expected value: 140.1 F measured value: 140.1 F

Select the proper tool to use here

expected value: 60.0 F measured value: 60.4 F

Select the proper tool to use here

expected value: 60.0 F measured value: 61.0 F

Now that you've been introduced to VAV boxes, Let's start with the diagnosing scenarios!

• These exercises are self paced, so no need to feel stressed
• The red rooms indicate rooms with issues, while the green indicate rooms that are working properly.
• Diagnose and solve all the red room scenarios in numerical order, starting with Room 1
• Once you have completed all the scenarios, you can come back and retry previous ones

Select the proper tool to use here

expected value: 60.0 F measured value: 60.4 F

Now that you've been introduced to VAV boxes, Let's start with the diagnosing scenarios!

• These exercises are self paced, so no need to feel stressed
• The red rooms indicate rooms with issues, while the green indicate rooms that are working properly.
• Diagnose and solve all the red room scenarios in numerical order, starting with Room 1
• Once you have completed all the scenarios, you can come back and retry previous ones

Notice how around 9 PM, the systems heating and cooling setpoints change and stay at this different value until around 6 AM?

Learn why!

This behavior is due to scheduling through a setback strategy. A setback is a control method in which technicians adjust system setpoints during unoccupied periods to facilitate running less. In this case, the cooling and heating setpoints are shifted farther apart during these hours, reducing the likelihood that either heating or cooling operation is required.

Continue

Select the proper tool to use here

expected value: 390 cfm measured value: 393 cfm

Select the proper tool to use here

expected value: 140.1 F measured value: 140.1 F

Select the proper tool to use here

expected value: 140.1 F measured value: 140.1 F

Select the proper tool to use here

expected value: 60.0 F measured value: 60.2 F