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-   -   90 degree bend for 2.5 ton residential liquid and suction (http://www.diychatroom.com/f17/90-degree-bend-2-5-ton-residential-liquid-suction-145878/)

slash5bmw 06-03-2012 10:22 PM

90 degree bend for 2.5 ton residential liquid and suction
 
I need to run the liquid/suction lines up a 15 feet brick wall and then do a 90 turn into the attic. I'm going to take a brick out of the side of the house for the line and the pvc drain lines.

Is it possible to bend both the liquid and suction line to make the turn or should I braze on joints? I believe the lines are 3/8 and 5/8.

I'd like the lines to be as close to the house as possible.

Any ideas?

Thx.

Slash.

carmon 06-03-2012 10:33 PM

sure you can bend them..... many different tubing benders available....:thumbsup:

Doc Holliday 06-03-2012 10:37 PM

Best to cut a hole in the eve of the home or remove a soffit vent and run new lines up from the condenser and into the attic. Then you can simply couple to the old existing line where you can reach it easier (for brazing) or simply run an entire new lineset all the way to the evaporator without any coupling. You can then put a lineset cover over the outside section.

You won't have to worry about 90's this way, but you will have to pay for the lineset, maybe $200 total.

Before.
http://i87.photobucket.com/albums/k1...508_130924.jpg

After, without a lineset cover.
http://i87.photobucket.com/albums/k1...508_151838.jpg

Doc Holliday 06-03-2012 10:44 PM

And don't forget to bring the linset ABOVE the evaporator in the attic and drop it down and into the evaporator, to reduce the risk of an oil trap in the refrigerant, like so...
http://i87.photobucket.com/albums/k1...430_130621.jpg

http://i87.photobucket.com/albums/k1...412_092546.jpg

slash5bmw 06-04-2012 08:49 AM

3 Attachment(s)
Thanks for the photos and reply. There are no existing line so new lines need to be installed.
The roof line side of the house the condenser is located it the opposite of what is shown in your photos.

I read that you want your lines sloped toward the compressor so gravity helps move the oil back to the compressor.

http://hvac-talk.com/vbb/archive/index.php/t-52584.html

Read the post by frozensolid

"05-22-2004, 02:32 PM
Your lines should always be sloped toward the compressor. Unless they are heat reclaim or condenser lines these should be level. It takes energy to move oil. If gravity is your energy source, this is a good thing, gravity is free."

Please check out the photos. (how did you get the photos to show up in the post?)

Thanks again for your replies.

Slash

slash5bmw 06-04-2012 12:39 PM

Do you think this would work for the liquid line?
http://www.harborfreight.com/large-t...der-97602.html

I'd need to get a bigger one for the suction.

Thx

Slash

Doc Holliday 06-04-2012 12:59 PM

Cut 'n' paste.

Doc Holliday 06-04-2012 12:59 PM

Damn, it didn't copy that big. Sorry.

Doc Holliday 06-04-2012 01:02 PM

In 12 years in this trade I've never once used a pipe bender. You don't need it, the copper will bend on it's own. Granted you have to be extremely careful so as to not kink it but I don't see anywhere on a new lineset that you're going to need a 90, not if you're going up through the eve of the home and into the attic.

Doc Holliday 06-04-2012 01:03 PM

That's a lot of lift to the attic. Still run the lineset from the outside and punch through the brick. The lineset cover has a top piece that will weatherproof the line. Then, so you don't need to 90, run it upward into the attic at about a 45 degree or slightly more of bend, lineset cover the entire thing, and be done with it.

Doc Holliday 06-04-2012 01:09 PM


http://imageshack.us/images/grey_flag.png

slash5bmw 06-04-2012 01:28 PM

1 Attachment(s)
Doc,

Here is a picture of my neighbors house. It's built exactly like mine. I plan on going into the brick. The line doesn't need to be an exact 90 but I doubt a 45 bend would work unless I took out more than 1 brick. I like the line cover but I'm not sure it will work since some of the bricks are bumped out between the 1st and 2nd floor.

Also, did you read what frozensolid posted about sloping the lines to the compressor?
Read the post by frozensolid

"05-22-2004, 02:32 PM
Your lines should always be sloped toward the compressor. Unless they are heat reclaim or condenser lines these should be level. It takes energy to move oil. If gravity is your energy source, this is a good thing, gravity is free."


Does it make sense to slope the lines to the compressor? The air handler is about 3 feet off the floor of the attic so lines would be shorter if they were sloped to the compressor.

Thanks

Slash

Doc Holliday 06-04-2012 01:56 PM

Inverted loOp, meaning come above the evaporator and down. The rest will take care of itself.

http://www.alpinehomeair.com/related..._Rev_41509.pdf

Doc Holliday 06-04-2012 01:57 PM

And your neighbors home's line set is simply bent into the attic, no 90's.

Doc Holliday 06-04-2012 02:07 PM

Quote:

Originally Posted by Doc Holliday (Post 936136)
And your neighbors home's line set is simply bent into the attic, no 90's.


You can tell because where it penetrates the wall the lineset is bowed out ever so slightly. If it were 90'd it would be completely flush against the wall, and have that "90" bend look to it, sharp, like the pvc drain 90 next to it.

Again, it is simply hand bent.


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