Differences between Zone Sizing Data and Terminal Unit Data in HAP

[tj00343]

What's the difference between zone sizing data and terminal unit sizing data in HAP and is it possible that the maximum cooling sensible load for the zone be greater than the Sensible coil load of the terminal unit as indicated in the system design report attached .Note that it is a single space for one zone and the terminal unit only feeds this zone .
Thanks

 

[anorlunda]

Ping @russ_watters

 

[russ_watters]

We use Trace in my office, but the difference should be that the terminal unit should be receiving pre-treated primary air, so its heating/cooling requirements will be different from the room's (zone's) heating/cooling requirements. E.G, it will generally have a lower coil entering temperature than the room temperature.