All, I am attempting to add energy recovery (heat pipe) to my system, which
is VAV reheat, one system per site. The file locks up. Before I attempted
to add this, the building was compiling just fine, but I had attempted to
run the baseline and it had given me an error that the cooling coil leaving
temperature needed to be 6 F higher than entering water temp. I had tried
lowering the entering chw temp, but it still wasn't converging. So I was
attempting to add energy recovery (which the system will have, though I was
trying not to add it in the baseline to simulate App G baseline). The
system is high percent outdoor air (0.81). Does anyone have any ideas as to
what might be causing the file to lock when trying to add the ER? Thanks.

Maria

Maria T. Ramos, PE, CxA, LEED B+DC