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@dbollen The references indicated for this question were more for general HVAC knowledge and how the various components relate to a mechanical flow diagram and other drawings types; but you’re right, I don’t see specific mechanical flow diagrams in any of the NCARB-recommended references.
I did a quick search and found this resource, which does a great job explaining the purpose of a mechanical flow diagram and what it entails, as well as providing an example of one: ** Mechanical Flow Diagram - an overview | ScienceDirect Topics .**
For this type of question, using a process of elimination is a great strategy if you didn’t know exactly what a mechanical flow diagram was right away. If you could easily eliminate fan coil mounting heights and diffuser locations based on your general knowledge/experience of construction documents, you’d be left with your four correct answer choices.
Hope this helps!
Kiara Galicinao, AIA, NCARB
Product Coordinator Black Spectacles
The correct answer choice actually states: “Central air systems are typically less expensive and require less space for piping and equipment.”
Since air systems use ductwork rather than extensive hydronic piping networks, pumps, and related equipment, they are often simpler and less expensive to install.
Hope this helps!
Kiara Galicinao, AIA, NCARB
Product Coordinator Black Spectacles
HVAC, Electrical, and Plumbing [Exercise B]
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