Plus per our code, we do not require a hood if the oven is electric.
George, municipalities are not required to adopt the National Building Code, nor required to follow it. In my city, I do not need a hood for my deck pizza oven. It is vented via direct flue through the roof. We do have an exhaust fan and make up air to remove the heat, smoke/odors and provide cooling in the summer, but there is no hood.
Chicago, for example, has not adopted any model code… they use a proprietary code.
Even municipalities that have adopted a model code may not be using the most current one because they have to review it and adopt it into law, which takes time. They may also make many changes and adaptations to it. They may adopt the national code, but omit the part about needing a hood over a device that heats to 220 degrees.
This isn’t a case where Federal trumps state, which trumps local, etc. The National Building Code is not a federal law, so it’s up to Integraologist’s local jurisdiction. If they tell him he doesn’t need a hood, he doesn’t need a hood.
ADA, on the other hand, IS a federal law and local jurisdictions may not make laws that are less restrictive.
If you are removing heat you are most probably removing air. The code calls for all air removed from a building be replaces at not more than 10 degrees below 70 degrees.
Again, not necessarily. The national code may call for that, buy my make-up air is not tempered, and was approved by my city’s building department. Do I wish it was tempered? Yes, but it wasn’t required.