Questions on installing PVC for gas hot water tank vent.

cruzmislFebruary 12, 2012

Hi All,

I'm planning on buying an AO Smith Vertex hot water tank to replace my rental. Since we built the house, the local code has changed and I need to run a CPVC vent instead of the abs that is currently there.

My basement is finished so I need to run the pipe and build a bulkhead around the pipe after. I have a few questions though.

1. Should the pipe be level or should it drain away from the house to allow for any condensation to drain away

2. Is there a minimum distance it needs to be mounted from any walls? I want the bulkhead to be as small as possible.

3. How far apart do the pipe supports need to be?

and lastly whats the best way to seal the brick where the pipe exits? I was thinking of using a low expansion foam then a rubberized caulk on the outside.

Any other ideas greatly appreciated.


Thank you for reporting this comment. Undo

I suppose this "vent" is for the flue gases? How do you know that the existing vent is ABS? Often installation manuals/instructions are online at the manufacturers website. In the title, you post PVC. In the message, you post CPVC. They are not interchangeable for physical size nor for most uses. How do you know which AO Smith specifies?

    Bookmark   February 29, 2012 at 4:36PM
Sign Up to comment
More Discussions
Toilet swirls, but won't flush!!
Very frustrated. The toilet seems to be ok, it gets...
De-winterize, re-winterize...costs?
My 24 yr old son is buying a 1950 home on a short sale...
Water pressue and other plumbing issues (MULTIPLE ISSUES - LONG)
I have a couple plumbing issues in my house. Some background... Approximately...
Can we bypass old hot water heater?
Any reason we can't bypass and then remove this old...
Trying to verify gas pipe size
I am installing a new natural gas range and oven, and...
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™