VAV - Damper Min / Max

This workflow will test a VAV box for its airflow when the damper is at its min and max position.

First, we display the initial conditions of the equipment.
Then we perform precondition checks to ensure the equipment is ready to be tested.
Next we will close the damper.
Finally we will open the damper comparing to max occ cooling flow.

Outcome 🎯

This test will check a VAV boxes ability to produce adequate min and max airflow.

Recommended Schedule 📅

Device	Point Requirements 📌
VAV	Discharge Airflow
	Damper Command
	Min Occ Cooling Flow
	Max Occ Cooling Flow
AHU	Discharge Air Pressure
Preconditions
1.	AHU Pressure > Min Pressure Threshold

*Variations

There is a variant of this workflow that will work without the AHU requirement.
There is a variant that will work with “floating damper control” I.e. a boolean damper closed command
and boolean damper open command, but in this case we cannot control to a specific close/open percent (i.e. close to 5%, open to 95%).

Workflow Overview

	Test Step	Workflow
1	Pre-condition Check	AHU Pressure > Min Pressure Threshold
2	Close Damper	Control: Command Damper Closed Success: Airflow less then % of Max Occ Cooling Flow
3	Open Damper	Control: Command Damper Open Success: Airflow greater than % of Max Occ Cooling Flow

	Test Step	Result Description
1	AHU Min Pressure	If AHU Pressure is less than this number, the test automatically archives
2	Damper Close Command	What % closed do you want to command the damper?
3	Close Damper Airflow Threshold	What % of the Max Occ Cooling Flow do you want to set as the airflow threshold when the damper is commanded closed?
4	Damper Open Command	What % open do you want to command the damper?
5	Open Damper Airflow Threshold	What % of the Max Occ Cooling Flow do you want to set as the airflow threshold when the damper is commanded open?
6	Max Sequence Duration	What is the maximum length of time in seconds that a sequence should take to execute?
7	Min Sequence Duration	What is the minimum length of time in seconds that a sequence should take to execute?
8	Stabilization Time	How long in seconds should the program wait when one sequence finishes, before moving onto the next?

If you need assistance with interpreting your results, reach out to the support team at [email protected].

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