NFPA 72 Requirements for Duct Smoke Detectors

[@diona.906]

another thing worth mentioning is AHJ. Sometimes depending on your local regs you may have to follow IMC code and not NFPA.

[@Frank-tv6xo]

Can you mount a duct detector inside the air unit at the beginning of the supply?

[@bartwisdom6612]

I see a bunch of guys just cutting the sample tubes to fit and not paying attention to the holes in the tubes. I didn't catch you mentioning anything about the number of holes in the sample tube. Is there somewhere in NFPA 72 that address this?

[@mikedickinson9730]

Great video. Just out of curiosity, what is the code on requirement for holes in the sample tube for a 22 inch duct?

[@jamesfactstechnologies5200]

How many duct detectors can be installed in a loop.?

[@PyrotexSystems]

That entirely depends on the manufacturer of the parts. There is not a code limiting that.

[@Kerry_kit_slayer]

very helpful thank you

[@PyrotexSystems]

You're welcome!