Hi, I am performing a simulation in Design builder, with a set value of infiltrations and a mechanical ventilation for the IAQ requirement. I would like to configure that the contribution of mechanical ventilation is complementary to infiltrations. In other words, for example, if I have 0.5ach infiltration and I require 0.65ach for IAQ, I want that the mechanical ventilation provides 0.15ach. I don't know if this is possible to configure, the results I am having is the sum of the infiltration rate plus the ventilation rate. (example: 0.5 + 0.65 ach) Thanks in advance!
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