Defective CO/GAS Detector Help

wa8yxm wrote:

Old-Biscuit wrote:
I've never understand the idea behind dual detectors CO/LP.
CO is lighter than air and accumulates up high in a room
LP is heavier than air and accumulates down low in a room

Now maybe a dual CO Detector/Smoke Alarm

That one I can answer (Dual CO/Explosive gas detectors)

The problem is your thinking, Though in the RV service since the primary explosive gas is PROPANE which as you pointed out is heavier than air, we thus call them PROPANE detectors. But the fact is the proper name is Explosive Gas Detector.. Propane is but one of the gasses that can ruin your day explosively.. NATURAL GAS, for example, is lighter than air, and also makes one loud BOOM when properly nixed with air and sparked at.

Other gasses, with varying density (By the way Propane is not "Heavier than air" it is more dense, one pound of propane is the same weight as one pound of ... every other substance on earth).

Alcohol vapors, Gasoline vapors, Methane, Butane, dang near any-ane, and more... The detectors detect all of them.

I'm fully aware of 'explosive' gases having made a living operating/testing/modifying commercial boilers.


But this was about a dual CO/LP detector in an RV installed by an RV mfg.
CO Detector should be mounted at least 5' feet above the floor. On the ceiling is even better
LP (explosive gas) should be mounted low

A dual CO/LP Detector doesn't detect both adequately regardless of where mounted.
Up high it will be too late for LP and down low too late for CO concentrations.