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Using HAMT model in EnergyPlus resulting in the model not using the HVAC System

Hello All,

I'm exploring using the HAMT model in EnergyPlus and am finding that when I use it the model does not seem to use its HVAC system as there's no associated HVAC energy. I don't see anything in the documentation related to this and am wondering if anyone has encountered a similar issue. I've put the IDF on OneDrive if anyone would like to look at it: https://mines0-my.sharepoint.com/:u:/g/personal/gflechas_mines_edu/ER8_okneXeBKmOhWmkx5AqAB4KkAP-KIova0W_YLfCXnvA?e=DrR3Il.

Of note is that I'm trying to use SurfaceProperty:HeatTransferAlgorithm:MultipleSurface so that I'm only using the HAMT model for the surfaces that I'm interested in and only need to define HAMT material properties for those constructions. Also when I run the model just using the CTF heat balance algorithm it does use the HVAC system.

Has anyone encountered a similar issue?

Thank you for your time, Gabriel