a percentage of these ideas are really old ideas,
the ideas are still here in case something can be done with it ...
econ AAGZ idea to save lives subject HVAC
if you go into a store and buy HVAC supplies, ducting, flu, vents, etc.
their may be dangers you are not aware of
( I do not know how accurate this information is,
but it will give you questions you can ask an expert ... ??? )
http://www.checkthishouse.com/2418/gas-appliance-chimney-placement-and-termination.html
you may not find any subject books or warnings
here are some ideas for you
I am a beginner at HVAC ducts and vents so
for correct answers you need to contact
exhaust vents city county state law 010512
http://www.archive.org/stream/gov.wa.plumbing/wa_plumbing_djvu.txt
http://www.iccsafe.org/cs/PMG/Pages/default.aspx
https://fortress.wa.gov/ga/apps/sbcc/File.ashx?cid=224
http://www.iccsafe.org/Store/Pages/Product.aspx?id=3100X09
http://apps.leg.wa.gov/wac/default.aspx?cite=51
http://apps.leg.wa.gov/wac/default.aspx?cite=51-51
http://apps.leg.wa.gov/wac/default.aspx?cite=51-51-1507
http://www.csia.org/HomeownerResources/ChimneySafetyInfo/tabid/112/Default.aspx
a percentage of these ideas are really old ideas,
the ideas are still here in case something can be done with it ...