Load Calculation Optional

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xformer

Senior Member
Location
Dallas, Tx
Occupation
Master Electrician
Hello,
When calculating the load using the Optional Method, what allows the omitting of a smaller Air Handler in the calculation? Or do all the air handlers for a muti zone system have to be accounted for?
 
You can only omit it if it is non-coincident - meaning it can't run when the other unit is running. I don't think multi-zone systems work like that.

I always include all the units.
 
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