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Old 04-05-2016, 07:33 PM   #1
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2ea. bathroom venting


Nah not going to beat the ventilation dog again, but here is a twist ?

Remodeled both baths in my condo. Both vented to the outside
separately with metal duct above in attic. I disassembled ducts,
installed insulation sleeves to all tubes. (condensation issue)
Now picture a big "Y",. . top is from baths which now meet at a wye, combining into one duct, travel 15ft. as one then go to the
outside thru exhaust flapper.
installed additional baffles at inlets to wye, to reduce possible siphon,
and vacuum. (overkill that's me)
Anyway, I have now connected two baths to a trunk line.
LEGAL? ?? Code says ??
I've seen motels feed to a common trunk line of the same size.
I snitched the one, now extra duct to handle a kit hood vent!

I'm in Michigan . . . . . . and its snowing !
whats the verdict?
THANKS
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Old 04-05-2016, 08:02 PM   #2
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Re: 2ea. bathroom venting


if you have one fan pulling the main line its good, if you have fans in each bathroom pushing into a combined vent no good, as you can force the air from one bathroom into the other..
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Old 04-05-2016, 08:31 PM   #3
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Re: 2ea. bathroom venting


Quote:
Originally Posted by woodchopper65 View Post
if you have one fan pulling the main line its good, if you have fans in each bathroom pushing into a combined vent no good, as you can force the air from one bathroom into the other..
Okay . . . both baths have power lite/vents which come with built in
baffles to prevent back flow. and the feed duct from each to wye
also has a baffle. thus my overkill.
A baffle is standard on all bath power vents from box stores.
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Old 04-05-2016, 08:41 PM   #4
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Re: 2ea. bathroom venting


Should have two different lines, two different roof or outside wall vents.
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