From The Field: Fire Alarm System Upgrade
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- Опубліковано 6 лют 2025
- Here is a quick video of a full system upgrade that we completed over the winter in a large hotel/conference center. We ripped out an old Notifier system 5000 with an AMG and a fire fighters telephone system and replaced it with a Farenhyt IFP-300ECS that is capable of doing even more! You’ll see at the end of the video there were a few System Sensor HRL horns that were chirping. Upon demoing the old system, we rang the building to make sure everything worked before we did anything so we knew in case parts of the new system didn’t work (thankfully the installation was as smooth as butter) I had multiple short circuit troubles and the horns were the cause because they were on the speaker circuits and not regular NAC’s. So this goes to show that you can’t put regular horns on speaker circuits. Enjoy!
I'm training for this kind of job now, I've always been fascinated with fire systems!
Nice video David! Really love the new Notifier messages.
They are messages that you get from Farenhyt
Ah.. Interesting.
@@Dredpath1 So the newer Farenhyt messages are the same the Notifier DVC messages?
@@SomeDudeWithAnExitSign I believe so. You have options to edit the messages.
Video idea: Maybe a day in the life of upgrading the fire alarm system?
This new voice message reminds me of a Simplex!
The horn at the end - did you replace it with a speaker or did you re-wire it to use a conventional NAC?
@@g-Elevators675 speaker
what were the original devices? never understood if notifier system 5000s were conventional or addressable. great video!
A mixture of devices. Old System sensor speakers
@@Dredpath1 I meant initiating devices.
What speaker/strobes were used on the new system? I recognized Wheelock E70 speaker strobes on the old system but never saw those speaker styles before I figured the end that was a horn only SpectrAlert.
SPSRL Speaker Strobes
What!!! Why did the replaced that system 5000!?!
Because the system had issues. They did a full renovation of the building.
@@Dredpath1 oh ok
What alarms did they used to have?
Old System Sensor speakers and BNG-1’s
@@Dredpath1 do you have a picture?
@@Dredpath1 does does the BNG-1 sound like
@@jonathanstarling1082 the BNG-1 is a pull station
Did you keep the old panel? Voice system 5000s are cool af
Kept parts of it
😇🤣😊
What do you mean? Don’t put horns on speaker circuits.
Horns and speakers are two different things. You can’t play a message through a horn. They have different components.
@@Dredpath1 why can’t horns play messages, but speakers can
@@jacobisworld9516 do you know the difference between a horn and a speaker?
@@jacobisworld9516 Horns can't play a message because their sound is generated when 12 or 24 Volts DC that comes from a NAC circuit or any other source that generates that current goes into the horn wiring or the device's main wiring and goes into the horn circuit board, the circuit board then sends out electrical currents which is the device's sound that it makes of it's programmed waveform, carrier frequency, amplitude modulation, and frequency modulation of modulation of amplitude and frequency that then goes into it's piezoelectric speaker buzzer and as the electrical currents flows through the buzzer (flows from the positive end to the negative end), it goes through a ceramic material with Piezo-electric properties. This means that when it's electrical currents of it's generated sound is passed through the material, it vibrates, producing it's sound that it makes and the way it vibrates is based on its waveform, frequency, amplitude, and polarity as when there's positive polarity in the current, the piezo pushes out and when there's a negative polarity in the current the piezo pulls in to create sound waves which is by vibrating the air.
The way how speakers play messages and work is when audio signals are transferred as electrical currents through wires that come from the amplifier's speaker circuit and go into the speaker's wiring of what Voltage the signal is (fire alarm voice evac systems use 25 or 70.7 Volts RMS) and then it makes the speaker vibrate based on it's waveform, frequency, amplitude, and polarity as when there's positive polarity in the current, the speaker pushes out and when there's a negative polarity in the current the speaker pulls in to create sound waves which is by vibrating the air. The speaker also has a transformer which is a mini amplifier that can change how loud it is in the case of fire alarm speakers they use wattage tap levels as they transform the main signal to what volume level the speaker should be.
Now what you're saying on why horns can't play messages but speakers can, horns can play messages but it's only when you take the speaker wiring from the amplifier's speaker circuit and wire it directly to the piezoelectric speaker buzzer to bypass the horns's circuit board, otherwise if it's wired into the horns's wiring terminals or the device's wiring terminals then it will make it's sound but it will play in weird and random chirping rhythms or not play at all that will cause short circuit troubles on the panel or voice panel.