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[EnergyPlus_Support] Errors in some zones and not others

I have uploaded a file named 18_manager_changes that when run in Version
1.2.3.031 gives me three errors.

1) Calculated design heating load for zone = OUTPATIENT 2 is zero. Check
zone sizing and zone thermostat inputs.

    The specification for OUTPATIENT 2 is no different to the other zones
with respect to zone sizing and zone thermostat inputs. Hopefully, this
isn't due to the use of multiple air loops.

2) Maximum iterations exceeded for three different air loops: Zone 7, Zone 8
and Zone 23, all quite large zones and mostly internal to the building. Why
is this?

3) Temperatures out of comfort range, despite everything being autosized.
Mostly it is a result of overheating due to this building having high
internal gains. However, the number of hours temperatures are out of range
is high in some cases. Can this be reduced?

Thanks in advance,

Sam Roose




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