Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
For the ZONE AIR CO2 CONCENTRATION output variable you are using, the key name should be the name of the zone object that you want the CO2 concentration of. You've set this to CARBON DIOXIDE, which doesn't seem to be an option and causes EnergyPlus to write out this Unique Key Name not found. error message. This means that your CO2_CONC sensor will only be set to the CO2 concentration in one zone. If you want to get CO2 in multiple zones, you'll need to create a unique sensor for each zone.
