On Fri, 9 Dec 2005 17:06:04 -0600, (m Ransley)
wrote:

It is a power vent I believe so combining 2 would force air back into
your furnace or inside, not good. I vent horizontal with my bosch
Aquastar 120 into a 12" stainless hood that pretty much directs geat
away, as I have flamable Cedar, But I still removed the cedar around the
vent any you could and use sheet metal. Outside air, what about freezing
the unit and ruining it, read the manual. You are aware you need a Big
gas line to feed it, is it 180000 btu, be sure you have the right size.

Hmmmm. I guess Ive been doing it wrong all these years then? I also
guess that GAMA venting tables are all wrong too? Might I suggest you
follow this link:
http://icpindexing.mqgroup.com/docum...vent%20tab.pdf
It is on page 4 of the .pdf but is numbered page 1.
Look for "Fan + Nat" A little reading is in order
Bubba