- Section 22.214.171.124 of the 2018 NFPA 99 prohibits medical gases from being installed in category 3 dental offices.
- Chapter 15 does not require the relief to be piped to the outside in category 2 but does not allow the to relief in the manifold room either.
- Chapter 5 required relief valves in category 2 system to comply with category 1 which requires the relief valves to be piped to the outside with the exception of "air" system that contain less than 3,000 cu. ft. at STP.
The problem I have is most of the headers I have seen in dental offices cannot be piped to the outside.l offices cannot be piped to the outside.