Re: [EnergyPlus_Support] Excessive iterations

["Michael J. Witte" <mjwitte@xxxxxxxx>]

After some investigation and consulting other development team 
members, we have determined that supply plenums will not work with 
furnace or unitary systems, because the controls assume the supply 
temperature will not change after leaving the unitary system node.  
To use a supply plenum with DX cooling, use DXSystem:AirLoop which 
uses setpoint managers to control the supply temperature.

Mike


On 4 Aug 2003, at 16:02, kirbyschapman wrote:

> I had a great working simulation. I then added a supply plenum, only
> to receive the dreaded "excessive HVAC iterations" warning. The supply
> plenum feeds three zones, and I was very careful to follow the supply
> plenum example. The three zones pretty much follow the setpoint
> schedule, so it seems that they are indeed receiving the conditioned
> air through the plenum.
> 
> Suggestions?
> 
> thanks
> 
> Kirby
> 
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