I have not seen this before.
Its not pretty but it may not be a problem unless mfg. requires larger tubing than used. The installer just didn’t have a reducing fitting on his truck. 
Did your pipe welding experience over-ride the standards of practice?..
Was there any refrigerant left in the line?..
That is pretty much the way I wrote it up. The unit was serving a small casita, and seemd to be functioning as intended.
Dale, so you liked the solder joint too.
Capillary action, not crimpilary action.:roll:
Well actually Dale, Yes.
Have you used silfoss or silver solder? Both are very strong and capable of what’s shown in the picture. Do have a different opinion?
I’ll bet the primary residence was a “Charmer” in Maryvale…
Yes I have silver soldered, and if the line does not leak it makes do difference what it looks like unless of course someone might be entered in a contest, which I doubt.
Why do you ask?
Perhaps I misunderstood your RAZZ emoticon as questioning if I knew anything about “welding”. BTW what SOP where you reffering to?
Actually I was directing the post to my com padre BK since he was a pipe welder and pipe inspector in a past life.
I inspect to my standards of practice, which exceed any on the market.
Sorry for the confusion. That’s why I quote who I am responding to in most cases. :oops:
I didn’t know Brian had welding experience.
Never was much of a welder Dale, that is why I got into the Inspection end of the business.
Just for Info., smaller line sizes are necessary in some cases to reduce the refrigerant capacity of the unit. IAW equipment installation manuals, the refrigerant charge should be kept to a minimum to prevent adverse design performance. There are line size charts available from the MFG for the different applications.
Thank you David.
The unit in question was serving a small mother-in-law suite and seemed to be cooling the space quite nicely.
I pretty much left it with “check the manufacturers guidelines”.