[RE-wrenches] Battery Off Gassing and CO Detectors

bob ellison reellison at gmail.com
Fri Feb 3 03:47:03 PST 2012


I would think that locating a CO detector on the ceiling of the room with
the battery bank would be enough to do it. You just would not know if it was
the battery bank or CO from another source. Your (or their) nose can do that
part of the job!

 

Bob Ellison 

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Rich Nicol
Sent: Thursday, February 02, 2012 9:40 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] Battery Off Gassing and CO Detectors

 

Wrenches

I understand that battery gassing of Hydrogen Sulfide can set off CO
detectors.  A new customer who I am about to replace a large battery bank
for had his furnace tech on site today to check for proper operation of the
furnace since his CO detector was going off, the tech found the high levels
of CO were coming from the battery bank. I recognize its not actually CO but
rather it's hydrogen sulfide since his generator had recently been running
to charge the batteries and I assume that the detector couldn't
differentiate the Hydrogen Sulfide from the carbon monoxide. Does anyone
have any insight into the mechanism that CO detectors use to detect the gas
and secondly could they be used reliably to detect battery gassing that
isn't being evacuated from the battery enclosure such as when a power vent
fails? Maybe a CO detector could be located near enough to the vent hole in
the Zephyr fan to detect high levels of Hydrogen Sulfide that aren't being
pushed out when the fan fails to operate and open its damper? Power vent
failure is a fear that a number of customers have expressed, maybe this
could be  a method of alerting the homeowner that there is an issue.

Thanks

Rich

 

 

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