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Originally Posted by qwerty hvac

Just joking.

Goof.

My first few weeks I was in the shop when a senior tech came up with a sign that was taped to a coil or something. It said "use frist." He asked another tech what frist was and I stopped what I was doing and listened in thinking I might learn something about a lineset flush, filter drier or something...

Turns out he was just making fun of the fact that someone misspelled "first."

Guess I'm still not altogether immune to pipe strectcher jokes...

Originally Posted by hurtinhvac

???

That's extra, for when someone steels the condenser. It's good for about 5 or 6 replacements.

Just joking.


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Originally Posted by qwerty hvac

Expansion loop.

Why?

Originally Posted by hurtinhvac

???

Expansion loop.



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???

I remember cutting out many of those fittings and hard-piping directly to the unit. Those fittings seemed to always leak. That's why I distrust mechanical fittings to this day. Although I believe mechanical fitting have improved.

[QUOTE=hurtinhvac;15078761]So was there a flared/compression type fitting that held the charge until you tightened the joint?

Nope... a brass diaphragm held the charge in until the connection was made. Once the fittings were tightened up, four triangle shaped blades in the male fitting would pierce the diaphragm. O rings made the seal like a SharkBite fitting. Precharged line sets are still used today. Saw one last week on a new remote ice machine.

It was always my understanding that the o-ring on an Aero-quip fitting was only for when the fittings were being joined. ONce they bottomed out you had a metal - metal seal. The only leaks I ever had with them was when the o-ring would get into that sealling surface. There are several still out there that have no o-ring and still aren't leaking.

Coleman mobile home condensers used the aero quip fitting quite often. Not sure if they still use them. The drown side to using them is they didn't have service valves to pump system down if you needed to. Also leaks may occur as the rubber o-rings didn't seal all the time.

If this did have the precharged lineset, couldn't the installer have just moved the condenser over a little more? Probably have to lay down another pad, but wouldn't have the extra 4' of lineset

Originally Posted by dandyme

oh, you yungins got a lot to see, wait until you cross a lennox that used the liquid line as the metering device and there is an extra 20' of liquid line


at least they followed mfg instruction an d sloped the lines and didn't stand them vertical

yea they could have made it look a tad better (not by much though)

Changed out 2 condensers using that system last summer. I believe it was a 3/8" liquid line bushed down to 5/16 for the last 15 feet going into flat coils.
Homeowner didn't want to change the linesets or Evaps so we just dropped in some 13 seer dry charge units.
Worked pretty well actually.

Hard to tell without a closup of the fittings, but it looks like an old Coleman condenser with precharged lines.

My personal favorite were the precharged lines that came with bending springs factory installed on about 1.5' of each end of the suction lines.

oh, you yungins got a lot to see, wait until you cross a lennox that used the liquid line as the metering device and there is an extra 20' of liquid line


at least they followed mfg instruction an d sloped the lines and didn't stand them vertical

yea they could have made it look a tad better (not by much though)

Originally Posted by KnewYork

You would have been screwed if you cut it. The line sets weren't copper. If you cut them they were ruined. If I remember correctly we could get 25, 35 and 50' sets.

We used all sorts of precharged line sets, they were all copper, Aeroquip fittings on the ends. We cut them to length, soldered them back together, vacuum pumped them and thighetened them up. Never had a problem.

The only problem with them was the Aeroquip fittings didn't like to seal if you took them apart and tried to put them back together. For some reason it seamed liike half the time they would leak the second time around.

Originally Posted by KnewYork

You would have been screwed if you cut it. The line sets weren't copper. If you cut them they were ruined. If I remember correctly we could get 25, 35 and 50' sets.

Are you talking about those flexible liquid lines they used to make?
I ran into that once in a concealed application. Not to happy.

So was there a flared/compression type fitting that held the charge until you tightened the joint? I can't believe those things lasted too long...maybe meant for builder installs?

Originally Posted by KnewYork

You would have been screwed if you cut it. The line sets weren't copper. If you cut them they were ruined. If I remember correctly we could get 25, 35 and 50' sets.

Certainly wouldn't have been the first thin I screwed up doing this type of work. Obviously I've never used them and never will.

Originally Posted by ryan1088

I would still take the extra time to cut it and make it look nice. I'm OCD about things like that.

They could have at least tried to use a bender on it.

You would have been screwed if you cut it. The line sets weren't copper. If you cut them they were ruined. If I remember correctly we could get 25, 35 and 50' sets.

Originally Posted by ammoniadog

I'm coming to the defense of that install. I believe that is a pre-charged line-set. You aren't supposed to cut those. Therefore, any extra line-set that you have needs to be left coiled up in a big mess. That's the way they wanted it back then.

I would still take the extra time to cut it and make it look nice. I'm OCD about things like that.

They could have at least tried to use a bender on it.