15 - How Duct Detectors Work - Introduction to Fire Alarms

[@MrSuper_416-jx1rs]

11 years since posted and still helps students like me. Thanks

[@jicnfpa122]

The best ever video series I found for fire alarm...amazing and outstanding job..Thanks Joe !

[@kleattomassetti6394]

Really helped me. Most videos on these are more HVAC related, and not so much fire panel related. Thank you.

[@aleem7579]

Very simple way to explain. Thank you so much.❤

[@TemiAbiel]

As always learning alot from your videos.

[@virtualtreadmillwalknature1488]

amazing explanation. Helping people.. Keep it up..

[@Kenneth_H_Olsen]

I am a student myself these days. and your instructions give a fast catching up with the formal books for the Exam ! I learn alot , thanks. Fire alarm is a big thing in the electric business .

[@GabeReyes-s6l]

I’m doing an addressable one soon, so I just need the SLC to the FRM like you said but what about the dry contacts that connect to the duct terminal side?

[@maheshpradhan9401]

I really liked the explanation. Thanks Joe ...keep good work

[@jnagel161092]

thank you very much for all of these videos

[@wildtrain]

well done as usual Joe

[@xabel3]

Thanks for the video!

[@engosamadawood]

man you are amazing

[@eduardoadog887]

Hey so what if I have a relay module for the damper ?

[@Sam-pg7nj]

These videos are awesome

[@mebrn5337]

i know he's no longer around to answer. but maybe others know.. if I wanted to change the duct detector, what wires would I short together so as to keep the FACP happy and not go into alarm? can I just disconnect the power and the zone wire?

[@JoeKlochan]

I'm still around

[@saidajanane2146]

i cant thank u enough wow thank u so much

[@aronjohn84]

And also a relay with a mmf

[@Vitamin-Q]

Joe when testing differential pressure between the sampling tubes with a digital manometer... Do you take an average reading or a peak reading? I've seen some fluctuations from pass to fail.

[@aronjohn84]

Wish youd hook up the switch to it now

[@maxiepattie85]

good stuff, thank you

[@robertcortez6815]

Can the duct detector be installed on the supply or does it have to be on the return?

[@JoeKlochan]

+Robert Cortez The international building code requires them to be on the one side and the international mechanical code requires them to be on the other. I don't remember which is which. Some towns adopt IBC, some adopt IMC. I've seen them both ways, and I've also seen many buildings that have detectors on both the supply and the return.

[@tonybignell4621]

What causes the Aux Alarm relay to change state?

[@JoeKlochan]

That changes state when the detector activates, same as the regular alarm relay. It just allows for another circuit to be controlled by the detector in addition to the alarm panel.

[@wichitaLKQ]

Been there thanks you mr jeo

[@maf1986mf]

Why is my duct detector keep getting full of water??

[@JoeKlochan]

Probably condensation