Hey @Erikbeeren ,
It seems, for some reason, the OpenStudio standards gem is not adding all of the rooms associated with a given HVAC system to the DOAS air loop. If this is true, then it may be a bug on the OpenStudio standards side of things that is out of our hands to fix.
At the least, I should be able to make sure that the names and the properties of the HVAC system make it to your air loops but you may not have all of your zones on the air loop until we figure out what is going wrong with the OpenStudio standards gem.