Make-up air, NFPA, and common sense
Make-up air, NFPA, and common sense
(OP)
I am a novice to NFPA code, but I can't find much that specifically applies to make-up air systems. Common sense would tell me that make-up air systems should not be running during a fire. Let's say that a fire exists in a building such that a hole is created between the buidling and the outside. This would create a negative pressure situation and the make-up air unit is going to try and correct this situation by increasing the air flow, essentially fanning the flames. Yet, through all my Googling and searching, I can't find anything saying that make-up air systems should be interlocked to a building's fire safety system. Can anybody spread some light on this subject?





RE: Make-up air, NFPA, and common sense
Duct smoke detection is required by a number of codes. Depending on where you're at you can find the requirements in the International Mechanical Code, International Fire Code, NFPA 72, NFPA 101, and NFPA 90A or 90B.
RE: Make-up air, NFPA, and common sense
Either there is smoke control or not. If is not, then a good solution is that the fire alarm system order to shut down ALL fans and hvac equipment.
RE: Make-up air, NFPA, and common sense
RE: Make-up air, NFPA, and common sense
RE: Make-up air, NFPA, and common sense