Studor Mystery: Sewer Gas Smell - Plumbing - DIY Home Improvement | DIYChatroom


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 02-19-2010, 07:04 PM   #1
Newbie
 
Join Date: Feb 2010
Posts: 2
Rewards Points: 10
Default

Studor Mystery: Sewer Gas Smell


This is nuts. Many of us have gone crazy, so we're reaching out to the world for help:

*New construction project; 2 story single family SIP house with flat roof (requiring many studors----but have 2 vents to atmosphere); everything fine for one year.

*Strong sewer gas smell in master bathroom starts from studor vent area. One Toto Drake toilet and shower drain are on this vent.

*Figured maybe otherwise reliable Studor AAV failed, so replaced...only to have same smell. Well, maybe llghtning strikes twice.....replaced again only to have same smell. Three studors can't be defective.

*Figure we should smoke/peppermint test, but decided to cap/plug the vent before ordering....and smell stops instantly! Have done MULTIPLE times over course of weeks and different weather/pressure conditions.

STUDOR ON = smell
CAPPED = no smell

*Figure it's "system" problem, but Mystery: for the studor to open, would need negative pressure. For the smell to come out, would need postive pressure. ????? ........and everything worked fine for a year

*Only variable is that the ejector pit in basement is on a Studor. It shouldn't work, but it does.....and it passed inspection (although in talking to Studor, it probably shouldn't of) But again, ejector seems to work, and there was no smell for a year. ?

We just can't blast this vent to atmosphere b/c there is a roof deck above it. And we can't keep capped b/c it siphons....and smell starts coming out of p-trap in shower.

What is happening!?!?!?! :-0 Thx! :-)

Advertisement

StudorCrazy is offline   Reply With Quote
Old 02-19-2010, 08:41 PM   #2
Registered User
 
Termite's Avatar
 
Join Date: Apr 2008
Posts: 6,520
Rewards Points: 2,000
Default

Studor Mystery: Sewer Gas Smell


Studor does in fact have a detail that their designers issued that permits venting of an ejector with an AAV. It has very specific dimensional requirements for the plumbing layout, but it can be done. First time I saw someone do it I disapproved it. They didn't have too many options so I did some online research and found it. After some reconfiguration they got it working.

See page 16 of this .pdf: http://www.studor.com/DesignCriteria.pdf

Other than having a lot of penetrations, why was the house's plumbing not conventionally vented? Seems like a shortcut. I do think all roads lead back to the ejector if the vent isn't properly configured, assuming the remainder of the AAV's are properly installed on a properly configured DWV system.

Advertisement

Termite is offline   Reply With Quote
Old 02-20-2010, 12:05 AM   #3
Doing it myself
 
Alan's Avatar
 
Join Date: Apr 2006
Location: Crescent City, CA
Posts: 3,762
Rewards Points: 2,024
Send a message via AIM to Alan Send a message via MSN to Alan
Default

Studor Mystery: Sewer Gas Smell


Run it exposed on the outside of the house?
__________________
Journeyman Plumber
Alan is offline   Reply With Quote
Old 02-20-2010, 12:49 PM   #4
Newbie
 
Join Date: Feb 2010
Posts: 2
Rewards Points: 10
Default

Studor Mystery: Sewer Gas Smell


Thanks for the good thoughts.

We can't go thru the roof real well because there is a roof deck/patio directly above it. (Worst case we're thinking we put stack inside tall flagpole so that smell doesn't ruin experience on the deck.)

The ejector pit is not done right...so I tend to agree that all paths lead back to that. Thanks for the link to the spec. I'm just wondering why it took a year to cause a problem. ....and why the ejector pit works fine.

Thanks!
StudorCrazy is offline   Reply With Quote
Reply

Tags
aav , sewer gas smell , smell , studor , venting


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sewer smell in sump pit (house is on a septic system) NateDogg1955 Plumbing 2 12-18-2009 06:01 PM
sewer smell in the bathroom bathroom plumbe Plumbing 3 10-13-2009 12:58 PM
Sump pump smell - not sewer Thunderknight Plumbing 3 11-23-2008 09:37 PM
Sewer Smell in Bathroom dc11 Plumbing 3 11-07-2008 05:20 PM
Sewer gas smell in basement from sump pump mirage212 Plumbing 15 10-23-2008 07:09 PM




Top of Page | View New Posts