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Mijotter 03-23-2013 02:31 PM

Question moving vents
 
Changing some things in my HVAC ductwork and have a few questions(this is all in the basement btw:

1. What's the best way to seal off a supply just use thermopan?

2. I'm also moving a return. What is the best way to cut out a new vent hole in the return trunk?

Mijotter 03-23-2013 08:22 PM

anyone?

joecaption 03-23-2013 08:29 PM

Quote:

Originally Posted by Mijotter (Post 1143902)
Changing some things in my HVAC ductwork and have a few questions(this is all in the basement btw:

1. What's the best way to seal off a supply just use thermopan?

2. I'm also moving a return. What is the best way to cut out a new vent hole in the return trunk?

Are you trying to close of a round steel trunk line, flex line, is the line gone and there a sq. or rectanguler line your trying to close off.

What type line are you trying to tap into? Material, shape?

Mijotter 03-23-2013 11:54 PM

yeah it's a 6 inch sheet metal round supply run i'm closing off. goes right in the the trunk.

The return I'm moving will be to the sheet metal rectangular trunk return.

beenthere 03-24-2013 03:32 AM

Use a 6" cap. Thermopan is not intended or approved for use on the supply.

Mijotter 03-24-2013 12:51 PM

ok those caps. Are they at a local Home Depot?

beenthere 03-24-2013 01:12 PM

Should be.

Mijotter 03-27-2013 01:01 AM

I want to close it off at the trunk so that there is no supply line whatsoever. Is this where the 6" cap goes or should I just get a piece of sheet metal and seal over the hole at the trunk? Thanks.

beenthere 03-27-2013 04:28 AM

Generally when I seal off a supply branch. I remove the pipe from the take off on the trunk, and use the cap to seal off the take off.

If you ant to remove the take off. You can use sheet metal panning to cover the take off hole. But its more work to do it that way.

Mijotter 03-28-2013 03:37 AM

2 Attachment(s)
So I closed off a supply and moved the return with great success. A question; When the furnace kicks on I can feel a slight touch of cool air at the return vent. Is this normal and just the air getting sucked up in to the vent? I went upstairs and felt the same in the return there too. Thanks for all the help and advice.

beenthere 03-28-2013 04:21 AM

Common with many systems.

ben's plumbing 03-28-2013 06:32 AM

good job ..its just a cap don't over think it ...ben sr


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