2 powervent waterheaters, one 3" pvc vent pipe?

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disappointed

New member
I have a finished basement, and need to add a 2nd waterheater for a new bathroom shower that acts as a carwash, flowing 24gpm! Is there any way I can tie into the existing 3"pvc vent pipe for this 2nd waterheater? Adding a 2nd vent would require tearing into the ceiling, which would suck! Theoretically, you could add a couple of 3" PVC motorized ball valves, but it would be much easier to try to keep things simple.
 
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RyanT99

New member
Hi im sure that with two power vents you too be at 5 inch for the Vent/ flue pipe if your sharing a common vent , where they join and you have too use BAROMETRIC
DAMPERS so as any powered vent wont be forced back into the non running heater and into the room this has a lot more information http://www.bockwaterheaters.com/technical/engineering_PDFS/4-Venting_08_06.pdf. Hope this helps You may have too also include an upgrade into the size of your fresh air supply
 
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