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[EnergyPlus_Support] Problem with outside air nodes



Hello,

I am using room a/c packaged units with outside air mixers, fans, DX 
heat and cool coils and electric heaters.

If I use a common outside air node (NOUTSIDE) for all the room a/c 
units and the outside air mixers, I get lots of Warning and Severe 
messages (see below).  If I use a different outside air node for each 
room unit (eg NOUTSIDE1, NOUTSIDE2 etc), then I get no errors.  

Why cant I use a common outside air node?

Any help would be useful

Tony Baxter


Warning messages ----------------------------------------

** Warning ** Node used as an inlet more than once: NOUTSIDE
   **   ~~~   **   Used by     : PACKAGEDTERMINAL:HEATPUMP:AIRTOAIR, 
name=W:1
   **   ~~~   **   as inlet for: UNDEFINED, name=WM:1
   **   ~~~   **   and  by     : PACKAGEDTERMINAL:HEATPUMP:AIRTOAIR, 
name=W:10
   **   ~~~   **   as inlet for: UNDEFINED, name=WM:10


 ** Severe  ** Error in Node="NOUTSIDE", The same node appears as a 
non-parent Inlet node more than once.
   **   ~~~   ** Reference Object=OUTSIDE AIR MIXER, Name=WM:1
   **   ~~~   ** Reference Object=OUTSIDE AIR MIXER, Name=WM:10







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