[EnergyPlus_Support] Errors of autosizing the fan coil unit and the air-to-air heat pump at one time

["energypluser" <energypluser@xxxxxxxxxxxx>]

Dear all

I set up a fan coil unit to serve one room accompied by a direct air object which is served by 
an air-to-air heat pump. 
Since I lack of the performance data of both units, I chose to autosize these two object at one 
time. I set the fan coil has the highest priority for air conditioning, and the direct air is an 
assistant.
The node-branch connection passed the test.
However, the design load for heating coil became 0, and the leaving humidity of the cooling 
coil is bigger than the entering humidity.
For the heat pump, the air volume flow rate per watt of rated total heating capacity is out of 
range.
How, can I fix them?
should I set up the parameters for the fan coil unit, and then autosize the heat pump alone?
And I wonder whether the configuration of the zone equipment list can set the priorities of 
the equipments?
Thank you in advacne

mac.cz 






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