Battery Bank Venting [RE-wrenches]

[Richard Bogan]

Hello wrenches,

We have a battery back-up / interconnected system utilizing PVX-2580L
Sealed AGM SunXtender batteries. The battery bank will be located inside
a utility room which is part of a large 2000 sqft underground garage.
The room has mechanical venting out into the garage. The garage has
8-10' ceilings and a large double garage door that goes up to ground
level.  It also has a couple of doors to finish portions of the basement
(wine cellar, maid quarters, Rec. room) and 2 stairways up to the first
floor living area. 

Standard practice for us is to have venting but in this case the
basement walls are ~16" solid concrete walls with no available openings
for a fan to push air outside. We contacted the battery manufacture and
they gave us a reality scenario where the chances of enough hydrogen to
accumulate in this large of area to reach an explosive level is
impossible BUT, they are not fire experts and we should consult with our
local fire department for guidance. 

If we have to we will core a hole into the foundation install a fart fan
and ducting but, I wanted to get your thoughts before that fun job.

Thank you!

Richard J. Bogan 
NABCEP Certified Solar PV Installer (r) 
Solar Operations Manager | Empire Solar Solutions, LP


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