Piping and Instrumentation Diagram (Question)

[redux]

Hey everyone,

I am an energy modeling engineer, and I would like to ask a question regarding a project I am working on.

In the attached instrumentation diagram (and I also found this on AHU specification tables), what does it mean to have "air flow1/air flow2" (see figure). I deduce it is the "min airflow value/max airflow value", but I would like to be sure about this. Concerning colors, orange is return air, green is outdoor/fresh air supply, blue is primary air and pink is exhaust air.

Thank you all in advance for your time.

 

[anorlunda]

Welcome to PF.

That's a good guestion, but I am unable to zoom that image big enough to read what you are saying. Can you add a post with a close-up of the part of the image showing the label in question?

 

[redux]

Thank you, and thank you again for the fast repply.

 

[anorlunda]

Thank you. min/max would be my guess also. Wait a while for others to weigh in also.
Label conventions sometimes seem irrational unless you know the underlying thoughts.

 

[russ_watters]

In the attached instrumentation diagram (and I also found this on AHU specification tables), what does it mean to have "air flow1/air flow2" (see figure). I deduce it is the "min airflow value/max airflow value", but I would like to be sure about this.

That's what it looks like, yes; it's probably reduced outdoor air and exhaust when the washer is off.

 

[redux]

Thank you all for the help.