2021 code:

5.1.3.1.8 Locations containing positive pressure gases other than oxygen and medical air shall have their door(s) labeled as follows: ...

Proposed 2024 code change to:

5.1.3.1.8 Locations containing positive pressure gases other than oxygen and medical air shall have their entrance(s) labeled as follows: ...

Changing the NFPA 99 code would avoid this conflict with the NFPA 80 code.

Per NFPA 80, 4.1.4, no more than 5% of a fire-door’s surface may be covered by a sign.

Per NFPA 99, 5.1.3.1.8, locations containing medical gas manifolds, shall have a label on the door.  The label has lots of words and has to be readable from 5' away per 11.3.10.1 so it's likely that it obscure more than 5% of the door's surface.

*  There are other NFPA 99 codes (e.g. 5.1.3.1.9, chapter 15, etc.) that need the same word change from "door" to "entrance."

This is a great suggestion.  We have run into the 5% issue several times and changing the wording from "Door" to "Entrance" would definitely seem to solve this problem.

I am fine with the proposed change, but when I look at the 5% calculation for the sign on the door it appears that most signs that I see to meet the NFPA 99 signage requirement are well within the 5% limit.

Most signs that i have seen are 16" x 5" in size, and on a standard door that size is well below the 5% limit.