ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#89964 - 10/25/04 07:34 AM CO Detectors
John Steinke Offline
Registered: 04/03/01
Posts: 518
Loc: Reno,Nv., USA
Two questions:
1) What is the standard that covers installation of CO detectors in homes?
2) What is the best location? (I have seen the combo fire/co detectors on the market, but I am not convinced that CO and smoke are distributed in the same manner).
2017 / 2014 NEC & Related Books and Study Guides
#89965 - 10/25/04 12:19 PM Re: CO Detectors
Ryan_J Offline
Registered: 08/19/03
Posts: 1374
Loc: West Jordan, Utah, USA
Question 1: NFPA 720.

Question 2: Carbon monoxide has the same vapor density as air (1.0), meaning that it neither sinks nor rises. In my opinion, it is a crap shoot as far as location goes. Here in Utah they are required in new dwelling units, and I typically see the combonation type (c/o plus smoke) installed, so they are always at the ceiling.
Ryan Jackson,
Salt Lake City
#89966 - 10/25/04 04:03 PM Re: CO Detectors
sparkync Offline
Registered: 10/17/02
Posts: 812
Loc: NC
I bought two to go in my home. After reading the instructions on where not to locate them, I had to return them where I bought them, because it said not to put in within certain area near an air return, or near an entrance, near any gas appliance, etc. The way my house is laid out, there was no place for them Maybe another brand might work? Steve
#89967 - 10/25/04 06:04 PM Re: CO Detectors
John Steinke Offline
Registered: 04/03/01
Posts: 518
Loc: Reno,Nv., USA
Thanks, Ryan. I am inclined to place one at sleeping-to-thermostat level, near the beds. After all, aren't we primarily concerned with the risk while we're sleeping?

An earlier experience, with a first-generation model, had nuisance tripping from the "bloom" of gas released when the wall-mounted heater kicked on. I believe that the unit was located too close to the heater, and the tendency of the "bloom" to rise before dispersing contributed to the problem. (The heater has a direct outside air source, as well as a direct vent).

Member Spotlight
Member Since: 12/24/00
Posts: 4259
New in the Gallery:
SE cable question

2017 NEC and Related
2017 NEC
Now Available!

Shout Box

Who's Online
0 registered (), 64 Guests and 8 Spiders online.
Key: Admin, Global Mod, Mod
New in the Gallery:
SE cable question
Top Posters (30 Days)
Admin 49
HotLine1 43
gfretwell 18
Ruben Rocha 12
Trumpy 9
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals