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Specific multi split question

bluedog225

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Joined
Jan 31, 2012
Messages
3,378
Location
Texas
Good morning,

I’m planning the line-set routes for a 3 evaporator mini-split. I’m a little unclear on whether I’ll need to have three separate 3” holes in the wall to have each line set enter the wall near the evaporator. Or if I can bring all the lines inside through one hole and run them up (and down) between the studs.

If the latter, is it a standard 3” hole or something larger?

I figure someone has run into this issue and would appreciate a better understanding.

Thanks
 
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PoorUB

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Mar 29, 2021
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Fargo, ND
Personally, I would run three different holes. Less confusing when sorting out the line sets.
 

SALIV8

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Dec 11, 2008
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2,114
Location
chicago and s/w michigan
You can do it either way. Obviously with one hole it will need to be larger than 3” to accommodate all of the line sets, drains, and electrical connections.
 

Yankeefarmer

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Jul 25, 2011
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Location
Connecticut
If you use separate holes, you can easily buy line set penetration sleeves, hoods, and covers. If you use a single large hole, you'll probably have to come up with something on your own.
 
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bluedog225

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Jan 31, 2012
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Location
Texas
It sounds like the lines fill up a 3” hole. And a larger opening would be required. Along with special covers, etc. to make it all work and look good.

I was afraid of that. The top hole is about 30’ up. Not looking forward to this.

Thanks all!
 

fitter30

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Jun 23, 2019
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Location
Peace Valley,mo
It sounds like the lines fill up a 3” hole. And a larger opening would be required. Along with special covers, etc. to make it all work and look good.

I was afraid of that. The top hole is about 30’ up. Not looking forward to this.

Thanks all!
have u looked at the specs on line length and height?
 
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bluedog225

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Jan 31, 2012
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3,378
Location
Texas
Not yet. I didn’t realize there was a height limit. But it makes sense. I’ll check it out. Thanks!
Ps-the highest unit will be about 20 feet above the compressor unit.
 
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