Search found 157 matches

by Lambda
Sun Sep 22, 2019 9:36 pm
Forum: Fire Alarm Help
Topic: Becoming a Fire Alarm Technician
Replies: 1
Views: 117

Re: Becoming a Fire Alarm Technician

The immediate problem I see, is you are still in school. Unless you are taking night classes, it's going to be hard to find a company that will accommodate a daytime school schedule. Most are not going to want to hire someone to only work a couple of hours a day. But let's say that's not an issue. I...
by Lambda
Thu Oct 26, 2017 5:27 am
Forum: Fire Alarm Help
Topic: Monitor Panel in AC enclosure
Replies: 2
Views: 750

Re: Monitor Panel in AC enclosure

The only thing I can find in Chapter 10 is 10.14.1 and 10.14.2.4 which says that the panel must be installed in an environment within listed specifications. It says nothing about "monitoring" for temperature or humidity extremes. The way I read it, you only have to make sure the space is conditioned...
by Lambda
Tue Oct 24, 2017 7:12 am
Forum: Fire Alarm General Discussion
Topic: Pull stations with the key inserted in buildings.
Replies: 41
Views: 6765

Re: Pull stations with the key inserted in buildings.

As for the alarm not going off sooner, I don't think the smoke caught the detector until the VERY last moment and even then if there were sprinklers they would have went off at the same time. According to the investigation, the fire alarm activated in 41 seconds after the start of the fire. I'm not...
by Lambda
Tue Oct 24, 2017 6:59 am
Forum: Fire Alarm General Discussion
Topic: Pull stations with the key inserted in buildings.
Replies: 41
Views: 6765

Re: Pull stations with the key inserted in buildings.

I know, but what I mean is that the state might have toughened all of its fire safety laws, and not just those that played a part in The Station disaster, in a knee-jerk reaction. I doubt they would put a "fire alarm tampering provision" in the code because of the Station fire. If anything, because...
by Lambda
Mon Oct 23, 2017 6:47 pm
Forum: Fire Alarm General Discussion
Topic: Pull stations with the key inserted in buildings.
Replies: 41
Views: 6765

Re: Pull stations with the key inserted in buildings.

Maybe all these strict laws in Rhode Island were implemented as a reaction to The Station nightclub fire? The fatalities at The Station were a result of improper sound insulation material installed on the stage, overcrowding, and lack of a fire sprinkler system. The fire alarm system operated as de...
by Lambda
Mon Oct 23, 2017 6:34 pm
Forum: Fire Alarm General Discussion
Topic: Pull stations with the key inserted in buildings.
Replies: 41
Views: 6765

Re: Pull stations with the key inserted in buildings.

Not surprising if you live in Rhode Island. Not sure on the specifics of the laws there but they are tough on who's granted access to fire alarm equipment. I sent a defective control panel back to its' manufacturer through a distributor in the Cranston area, and when I brought it into the building,...
by Lambda
Sat Oct 14, 2017 6:52 pm
Forum: Fire Alarm General Discussion
Topic: 150% rated capacity NFPA
Replies: 3
Views: 855

In our jurisdiction, if 150% wasn't required when installed, wouldn't be required today. But wouldn't hurt to try a tune up on the almost 50 year old girl! But then again, she's almost 50 years old. I think they got their money's worth out of it.
by Lambda
Fri Oct 13, 2017 9:43 pm
Forum: Fire Alarm General Discussion
Topic: 150% rated capacity NFPA
Replies: 3
Views: 855

Re: 150% rated capacity NFPA

I would make sure you are running your hoses as straight as possible. Any kink or bend in the hose will mess with the pitot readings. Sometimes, there are going to be severe bends that are unavoidable, but you would be surprised how much a better reading you get when you take the kink out of the hos...
by Lambda
Sat Oct 07, 2017 11:00 am
Forum: Fire Alarm General Discussion
Topic: A question about Atlanta's Marriott Marquis fire alarms
Replies: 11
Views: 2041

"NFPA 72 permits the emergency voice/alarm communications system to provide other uses, such as for public address (PA) or mass notification purposes. When the system also serves a public address function, it might seem as if some features required for the PA system would violate NFPA 72 requirement...
by Lambda
Fri Oct 06, 2017 5:52 pm
Forum: Fire Alarm General Discussion
Topic: A question about Atlanta's Marriott Marquis fire alarms
Replies: 11
Views: 2041

Re: A question about Atlanta's Marriott Marquis fire alarms

I honestly can't see why they would use the code-3 tone on a speaker rather than just use a chime/strobe as that seems like it would be a bit too complicated and its easier to go with the chime/strobe. They want the ability to page. But don't need or require a voice evac message, or might want to i...
by Lambda
Fri Oct 06, 2017 5:40 pm
Forum: Fire Alarm Help
Topic: Residential Smoke Alarm Questions
Replies: 4
Views: 1030

Re: Re:

[quote="[Isaaaakkk]What kind of module is this?[/quote] Google is your friend - search "120V smoke alarm relay". You need to buy the same brand as your smoke alarms. You probably could use another brand, but not recommended by the manufacturer. And yes, photoelectric are far superior to the big box ...
by Lambda
Fri Oct 06, 2017 5:22 pm
Forum: Fire Alarm General Discussion
Topic: A question about Atlanta's Marriott Marquis fire alarms
Replies: 11
Views: 2041

Re: A question about Atlanta's Marriott Marquis fire alarms

To me, it sounded like a chime tone. It sounded like the tone was playing in different areas with the timing just out of sync. If the T3 heard at the beginning was actually the only alarm sounding, I would think that would be inadequate for today's standards. It's possible too someone put in a chim...
by Lambda
Fri Oct 06, 2017 1:53 pm
Forum: Fire Alarm Help
Topic: Residential Smoke Alarm Questions
Replies: 4
Views: 1030

There is a relay module you can put in line with 120V smoke alarms. It's wired to the interconnect wire and gives you a dry contact. I've seen it once in a residential setup connected to an alarm panel, but given how often residential smoke alarms false, I wouldn't recommend it.
by Lambda
Fri Oct 06, 2017 1:50 pm
Forum: Fire Alarm General Discussion
Topic: A question about Atlanta's Marriott Marquis fire alarms
Replies: 11
Views: 2041

I think the higher pitch tone you are hearing is either an echo and/or distortion from the microphone from the loud noise of the fire alarm speakers. It's possible there is something in that immediate area that is connected to the fire alarm panel that was making noise, maybe an annunciator, and tha...
by Lambda
Fri Sep 15, 2017 4:00 pm
Forum: Fire Alarm Help
Topic: Fire alarm activation from 2 devices?
Replies: 4
Views: 1203

Re: Fire alarm activation from 2 devices?

Anything can be done - with AHJ approval. And your local AHJ can override anything in NFPA. So I wouldn't worry about satisfying code as long as you satisfy the AHJ. One thing to consider, he is probably not going to grant you that change just because it sounds like a good idea. You should demonstra...